Specifications PROJECT MANUAL •
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TIGARD HIGH SCHOOL
ADDITION / REMODEL
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BUILDING DIVISION
Tigard - Tualatin School District
- 6960 Sandburg Road
Tigard, Oregon 97223
February 23, 2004
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D U L L O L S O N W E E K E S
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SET NO.
OFFICE COPY
• SECTION 02010
SITEWORK GENERAL REQUIREMENTS
PART 1. GENERAL
1.1 GENERAL REQUIREMENTS
A. Drawings and general provisions of the Contract, including General and other Conditions and
Division 1 — General Requirements sections, apply to the work specified in this section.
1.2 WORK INCLUDED
A. It is the intent of these specifications and,the accompanying drawings to describe complete and -.
functional site construction and utility systems. Furnish and install all material and equipment in
accordance with these documents. Include all incidental items and work not specifically shown
or specified but required by good practice in a complete system.
B. The drawings are diagrammatic and are based on existing information. They should be
followed as closely as possible, yet are not intended to show every item in its exact location or
all the details of the equipment. Where required by job -site conditions, relocate and provide
fittings, etc., as required. Any deviations from the drawings must be approved by the owner's
representative.
1.3 RELATED WORK
A. The special conditions of this specification apply to the work specified in Sitework Division 2
that encompasses Sections 02010 through 02930.
B. Refer to Division 1 for the General Requirements of the contract.
1.4 REFERENCES
A. American Concrete Institute (ACI)
B. American Society of Mechanical Engineers (ASME)
C. American Public Works Associate (APWA)
D. American Associate of State Highway and Transportation Officials (AASHTO)
E. American Society for Testing and Materials (ASTM)
F. American Concrete Pipe Associate (ACPA)
G. Occupational Safety and Health Act (OSHA)
H. Oregon Department of Transportation (ODOT) .
I. California Department of Transportation (CALTRANS)
J. National Sanitation Foundation (NSF)
K. Washington Department of Transportation (WDOT)
L. Uni -Bell Plastic Pipe Associate (UNI)
M. Uniform Plumbing Code (UPC)
02054 TIGARD HIGH SCHOOL ADDITION / REMODEL — PHASE 1
FEB 04 TIGARD - TUALATIN SCHOOL DISTRICT 23J 02010 -1
Printed 02/04/04
SECTION 02010
SITEWORK GENERAL REQUIREMENTS
N. Uniform Building Code (UBC)
O. Uniform Fire Code (UFC)
P. American Water Works Association (AWWA)
1.5 DEFINITIONS
A. Not used in this section.
1.6 SUBMITTALS
A. The submittals shall be properly bound with sections clearly identified. Submittals for each
section need to be complete. Partial submittals for a section shall be returned unreviewed.
B. The submittals shall contain performance data and technical specifications on all materials and
equipment to be used on the project.
C. Shop drawings shall be included with the submittals where specifically requested in the
specifications, where necessary to determine clearance, where the contractor proposes alternate
equipment or material arrangements, and when requested by the owner.
D. All shop drawings must be reviewed and approved by the general contractor prior to being
submitted to the engineer. Any shop drawings submitted without contractor's approval stamp
shall be rejected.
E. Review of submittals or shop drawings by the owner and engineer does not relieve the
contractor from the requirements of the contract documents unless specific approval has been
requested for a given deviation.
F. By submitting, the contractor /supplier certifies that the materials or equipment proposed is
satisfactory for the application intended.
G. Fabrication of materials and installation of equipment is not authorized prior to approval of shop
drawings and vendor data.
H. Alternate items installed without the owner's approval shall be replaced with the specified
materials at the contractor's expense. The contractor assumes full responsibility that alternate
items or procedures will meet the job requirements and is responsible for cost of redesign and of
modifications to this and other parties' work caused by alternate items furnished under work of
this section.
•
1.7 QUALITY ASSURANCE •
A. For work on this project, comply with the applicable and/or specifically referred standards and
codes published herein. Where any of the codes and standards are at variance with the drawings
and specifications, the more stringent requirements shall take precedence.
B. Contractor shall be skilled in his trade and is solely responsible for compliance with health and
safety regulations, performing work in a safe and competent manner, and in installation
procedures required for the work outlined in these documents.
C. Maintain the highest standards of workmanship throughout the project. Utilize workers only in
their areas of skill, expertise, qualifications and experience. Under no circumstances provide
02054 TIGARD HIGH SCHOOL ADDITION / REMODEL — PHASE 1
FEB 04 TIGARD - TUALATIN SCHOOL DISTRICT 23J 02010 -2
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SECTION 02010
SITEWORK GENERAL REQUIREMENTS
any on the job training without direct supervision and thorough review of the quality of the work
step by step.
D. Inspect all material and equipment upon arrival at the site and return or refinish any which is not
in new condition. All refinishing is subject to owner's approval.
E. All equipment, valves, and instruments shall be installed in such a way that all components
requiring operation or maintenance are readily accessible.
F. Soils engineer or an independent testing laboratory will be retained by the owner to observe
performance of work in connection with excavating, trenching, filling,.backfilling, and grading.
G. Readjust all work performed that does not meet technical or design requirements, but make no
deviations from the contract documents without specific and written approval from the owner.
1.8 DELIVERY, STORAGE AND HANDLING
A. The equipment and materials specified herein shall be delivered f.o.b. factory with freight
allowed to the jobsite and include full -value insurance coverage while in transit.
B. Contractor shall inspect the equipment and materials for damage upon delivery and shall
immediately report damage to owner and replace or repair such damage to the satisfaction of
owner.
C. Handle materials as recommended by the manufacturer, with approved equipment in a manner
that will prevent damage.
D. Store materials in a secure area designated by owner off the ground and in an orderly manner
that will prevent damage.
E. Store materials subject to temperature or humidity damage in a controlled environment as
recommended by the manufacturer and approved by owner.
F. Dangerous and highly combustible materials shall be packaged, shipped, and stored in
compliance with Federal, OSHA, State, and local safety and fire codes as approved.
1.9 SCHEDULING AND SEQUENCING
A. Not used in this section.
PART 2 . PRODUCTS
2.1 Not used in this section.
PART 3 EXECUTION
3.1 COORDINATION
A. Contractor shall be responsible for continual coordination of the work with other trades so as to
avoid conflicts in installation. Cooperate with other trades to assure that construction proceeds
in an orderly and timely manner.
B. The contractor shall be familiar with the site configuration and constraints. Methods of
construction issues such as clearances from existing trees, existing utilities, and site features are
the responsibility of the contractor.
02054 TIGARD HIGH SCHOOL ADDITION / REMODEL — PHASE 1
FEB 04 TIGARD - TUALATIN SCHOOL DISTRICT 23J 02010 -3
Proud 02/04/04
- SECTION 02010
SITEWORK GENERAL REQUIREMENTS
3.2 MATERIALS AND WORKMANSHIP
A. Furnish all materials and equipment in new condition, free from defects and of size, materials,
make, type and quality specified. Installation shall be in a neat and workmanlike manner.
B. When two or more items of the same kind, type or class are required, use items of a single
manufacturer.
C. Workmanship shall be first class throughout and performed only by competent and experienced
workmen in a manner satisfactory to the project coordinator and/or engineer. Constant
supervision of the work, either by the contractor or his competent representative, shall be
maintained. Work insulated or concealed before being inspected and approved shall be opened
and uncovered upon request at the contractor's expense.
•
3.3 DEMOLITION •
A. General: The installation of work under this contract includes removal of certain existing site
paving, structures, utilities and vegetation. The extent of this work has been noted on the
drawings; however, it is probable that relatively minor additional removal or relocation of
various site features may be necessary in order to install new work as shown. The contractor
shall allow for and reflect in his bid the cost of this work, based on examination of present
conditions.
3.4 PROTECTION
A. Protect all work, material and equipment from loss or damage until the project is accepted by
the owner.
B. As the work progresses, keep all equipment covered and cap all piping that may temporarily be
left unconnected.
C. Notify all other trades of any required precautions necessary to protect the work and personnel.
3.5 INSPECTION
A. Contractor shall inspect his work to ensure the installation and workmanship are in accordance
with acceptable industry standards and applicable codes for the work being done and with these
specifications.
B. All materials, equipment, and workmanship shall be subject to inspection at any time by owner.
Correct any work, materials, or equipment not in accordance with these contract documents or
found to be deficient or defective.
3.6 CLEANING
A. Maintain premises and public properties free from accumulations of waste, debris and rubbish
during construction.
3.7 START -UP •
A. Contractor shall be responsible for proper operation of all systems, minor subsystems, and
services provided under this section. He shall coordinate start-up procedures, calibration and
system check -out with all subcontractors involved. Any system operational problems shall be
diagnosed; all correctional procedures shall be initiated with the various subcontractors as
02054 TIGARD HIGH SCHOOL ADDITION / REMODEL — PHASE 1
FEB 04 TIGARD - TUALATIN SCHOOL DISTRICT 23J 02010 -4
Printed 02/04/04
SECTION 02010
SITEWORK GENERAL REQUIREMENTS
required to bring the system into compliance with the design, and the problem then shall be
rechecked to verify that the system operates normally. Any knowledge of remaining difficulties
shall be brought to the attention of the owner.
3.8 CUTTING AND PATCHING
A. Cut work as required for installation and patch to match original conditions as directed and
approved by owner. Prior to cutting any existing work, locate all concealed utilities to eliminate
any possible service interruption or damage.
3.9 CONNECTION TO EXISTING SERVICES
A. Arrange time of connection with owner's representative. Hold duration of service outage as
short as possible. All existing utilities and tie -in points should be considered active utilities
unless otherwise indicated.
B. In general, site utilities shall terminate 5' from the building line. It is the contractor.'s
responsibility, however, to connect to existing stubs from buildings where indicated and to
coordinate the utility connections.
END OF SECTION
•
02054 TIGARD HIGH SCHOOL ADDITION / REMODEL — PHASE 1
FEB 04 TIGARD - TUALATIN SCHOOL DISTRICT 23J 02010 -5
Printed 02/04/04
SECTION 02060
BUILDING DEMOLITION
PART I GENERAL
1.01 GENERAL REQUIREMENTS
A. Drawings and general provisions oft he C ontract, in eluding Ge neral and other Conditions and
Division 1 - General Requirements sections, apply to the work specified in this Section.
1.02 WORK INCLUDED
A. Demolition of designated portions of structures including the removal of portions of slabs and
foundations
B. Interior Demolition for remodeling of existing structures to remain.
C. Backfilling, to subgrade, where foundations and utilities are removed.
D. Disconnect, cap, and remove and identify utilities.
E. Removal of materials from site.
•
1.03 RELATED WORK
A. 'Section 01010 - Summary of Work: - Precautions Concerning Asbestos.
B. Section 01500 — Construction Facilities and Temporary Controls: Barricades and landscape
protection.
C. Section 01500 — Construction Facilities and Temporary Controls: Dust control.
D. Section 01500 — Construction Facilities and Temporary Controls: Cleaning during construction.
E. Section 01700 - Contract Closeout: Project record documents.
1.04 SUBMITTALS
A. Submit demolition and removal procedures and schedule under provisions of Section 01300.
B. Permits and notices authorizing demolition.
C. Permit for transport and disposal of debris.
D. Submit record documents under provisions of Section 01300 and 01700.
1.05 EXISTING CONDITIONS
A. Conduct demolition to minimize interference with adjacent structures and school activities.
B. Provide, protect, and maintain temporary barriers and security devices.
C. Arrange and pay for disconnecting, removing, and capping utility services within areas of
demolition. Disconnect and stub off.
D. Conduct operations with minimum interference to public or private thoroughfares. Maintain
protected egress and access at all times.
02054 TIGARD HIGH SCHOOL ADDITION / REMODEL - PHASE I
FEB 04 TIGARD — TUALATIN SCHOOL DISTRICT 23J 02060 -1
Printed 2/5/04
SECTION 02060
BUILDING DEMOLITION
E. Do not close or obstruct roadways or sidewalks without permits.
F. Maintain mechanical and electrical services to Owner occupied areas.
G. Provide, erect and maintain protected pedestrian egress at all times.
1.06 PRE- DEMOLITION MEETING
A. Contractor to schedule meeting minimum of seven (7) days prior to start of demolition.
B. Attendance: Contractor, demolition superintendent, Architect and District representative.
PART 2 PRODUCTS
Not Used.
PART 3 EXECUTION
3.01 PREPARATION
A. Prevent movement or settlement of adjacent structures. Provide bracing and shoring as needed.
B. Erect and maintain waterproof closures for exterior openings.
C. Protect existing structures which are not to be demolished.
D. Disconnect, remove, and cap designated utility lines within demolition areas.
E. Erect and maintain temporary partitions to prevent spread of dust, fumes and smoke, to other parts
of the existing building.
F. Carefully remove items which are to be stored and then reinstalled. Transport to location
designated by Contractor for storage.
G. Protect existing items which are not indicated to be altered.
H. Mark location of disconnected utilities. Identify utility, indicate capping locations and distance
from finish floor on Project Record Documents.
I. The Owner will within seven days notice from Contractor transfer any undesignated and
freestanding furnishings and equipment out of the Work area.
3.02. EXECUTION
A. Noise Control: Maintain a reasonable degree of quietness throughout progress of the Work so as
to not disturb classes in session in adjoining rooms or buildings or annoy residents of the
neighborhood. Rotary machines and tools must operate below OSHA noise and fume standards.
Concrete sawing and jack hammering shall be performed after regular school hours up to 9:00 p.m.
B. Demolish indicated structures and appurtenances in an orderly and careful mariner.
02054 TIGARD HIGH SCHOOL ADDITION / REMODEL - PHASE I
FEB 04 TIGARD — TUALATIN SCHOOL DISTRICT 23J 02060 -2
Printed 2/5/04
SECTION 02060
BUILDING DEMOLITION
C. Stage demolition as necessary to meet Owners access /egress and mechanical/electrical
requirements.
D. Cease operations and notify Architect immediately if adjacent structures appear to be endangered.
Do not resume operations until corrective measures have been taken.
E. The Contractor shall employ a demolition foreman knowledgeable in identification of asbestos
containing materials and shall instruct workmen at the Site to be on the look -out for materials that
may contain asbestos fibers and to not disturb or attempt to remove such materials.
F. The Contractor shall carefully demolish walls, ceilings, etc., which contain concealed space to.
allow visual inspection for any material which maybe suspect of containing asbestos fibers prior to
total scheduled demolition.
G. Should the Contractor discover any materials which he suspects of containing asbestos fibers, the
Contractor shall stop working immediately and shall not carry on any activities in that area that
could disturb such materials. The School District will evaluate the circumstances and instruct the
Contractor on how and when to proceed with the Work.
H. The Contractor shall take every precaution to prevent the spread of asbestos fibers throughout the
Work under this Contract. The Contractor shall not break up and/or attempt to remove or actually
remove from the Work area any material suspected of containing asbestos fibers (i.e., pipe
insulation, spray,ed on fireproofing).
I. Asbestos fibers carried around the Work area or into the existing structure due to the Contractor's
carelessness or failure to follow the procedures herein shall, at the Contractor's expense, be cleaned
up in accordance with E.P.A. requirements.
•
J. Items requiring demolition and removal include, but are not limited to, the following:
1. Portions of exterior walls.
2. Interior walls, complete and partial.
3. Roofing materials.
4. Metal flashing and accessories.
5. Doors and Frames.
6. Window framework and glazing.
7. Casework.
8. Flooring Finishes (Tile and other materials containing asbestos to be removed by
District.)
9. Mechanical equipment.
10. Plumbing fixtures.
11. Electrical equipment.
K. Salvaged Items:
1. Remove materials to be re- installed or retained in manner to prevent damage. Store and
protect under provisions of Section 01600.
2. Coordinate with Owner.
3. Items to be salvaged:
a) Corridor Lockers.
b) Other as identified by Owner.
L. Remove materials to be re- installed or retained in manner to prevent damage. Store and protect
under provisions of Section 01600.
02054 TIGARD HIGH SCHOOL ADDITION / REMODEL - PHASE I
FEB 04 TIGARD — TUALATIN SCHOOL DISTRICT 23J 02060 -3
Printed 2/5/04
SECTION 02060
•
BUILDING DEMOLITION
M. Demolition Drawings are diagrammatic and are intended to assist the Contractor in establishing the
general scope of work. Include all demolition work required to complete the project whether or
not specifically shown on demolition Drawings.
N. Except where noted otherwise, immediately remove demolished material from site.
O. Remove and promptly dispose of contaminated, vermin infested, or dangerous materials
encountered.
P. Do not burn or bury materials on site.
Q. Remove foundation walls and footings completely.
R. Remove designated concrete slabs on grade.
S. Keep work sprinkled to minimize dust. Provide hoses and water main or hydrant connections for
this purpose as approved by governing authority.
T. Backfill areas excavated as a result of demolition as required to subgrade. Use backfill material
specified in Section 02223.
U. Rough grade and compact areas affected by demolition to subgrade maintain site grades and .
contours.
V. Remove demolished materials from site as work progresses. Leave site in clean condition.
END OF SECTION
02054 TIGARD HIGH SCHOOL ADDITION / REMODEL - PHASE I
FEB 04 TIGARD — TUALATIN SCHOOL DISTRICT 23J 02060 -4
Printed 2/5/04
•
SECTION 02200
SITE DEMOLITION
PART 1 GENERAL
1.1 GENERAL REQUIREMENTS
A. Drawings and general provisions of the Contract, including General and other Conditions and
other Division 1 — General Requirements sections, apply to the work specified in this Section.
1.2 WORK INCLUDED
A. . All demolition work shall be done as shown on the drawings and as necessary to fully complete
all work. Contractor shall furnish all labor and material necessary to cut, alter, remove, or
temporarily remove and replace existing construction where indicated, specific herein, or as
necessary for completion of the project.
1.3 RELATED SECTIONS
A. Not used in this section.
1.4 REFERENCES
A. American National Standards Institute (ANSI), ANSI A 10.6: (1990) Demolition Operations
1.5 DEFINITIONS -
A. Not used in this section.
1.6 SUBMITTALS
A. Submit proposed salvage, demolition and removal procedures for approval before work is
started. Demolition plan shall include procedures for careful removal and disposition of
materials specified to be salvaged, coordination with other work in progress, a disconnection
schedule of utility services, a detailed description of methods and equipment to be used for each
operation and of the sequence of operations.
1.7 QUALITY ASSURANCE
A. The work includes demolition or removal of all construction indicated or specified. Do not
begin demolition until authorization is received from the Owner's representative. Remove
rubbish and debris daily, unless otherwise directed; do not allow accumulations inside or outside
the building. Store materials that cannot be removed daily in areas specified by the Owner's
representative.
B. Use adequate numbers of skilled workmen who are thoroughly trained and experienced in the .
necessary crafts and who are completely familiar with the specified requirements and methods
needed for proper performance of the work of this section.
1.8 DELIVERY, STORAGE AND HANDLING
A. Comply with federal, state and local hauling and disposal regulations. Safety requirements shall
conform to ANSI A10.6.
1.9 SCHEDULING AND SEQUENCING
A. Not used in this section.
02054 TIGARD HIGH SCHOOL ADDITION / REMODEL — PHASE 1
FEB 04 TIGARD - TUALATIN SCHOOL DISTRICT 23J 02200 -1
Printed 02/04/04
SECTION 02200
SITE DEMOLITION
1.10 DUST AND DEBRIS CONTROL -
A. Prevent the spread of dust and debris to occupied portions of the building and avoid the creation
of a nuisance or hazard in the surrounding area. Do not use water if it results in hazardous or
objectionable conditions such as, but not limited to, ice, flooding, or pollution.
B. Vacuum and dust the work area daily. Sweep pavements as often as necessary to control the
spread of debris that may result in foreign object damage potential to aircraft.
1.11 PROTECTION
A. Traffic Control Signs: Where pedestrian and driver safety is endangered in the area of removal
work, use traffic barricades with flashing lights.
B. Existing Work: Protect existing work that is to remain in place, be reused, or remain the
property of the Owner. Repair items that are to remain which are to be salvaged and which are
damaged during performance of the work to their original condition, or replace with new. Do
not overload structural elements or pavements to remain. Provide new supports and
reinforcement for existing construction weakened by demolition or removal work. Repairs,
reinforcement, or structural replacement must have Owner approval.
C. Weather Protection: Protect electrical and mechanical services and utilities. Where removal of
existing utilities and pavement is specified or indicated, provide approved barricades, temporary
covering of exposed areas, and temporary services or connections for electrical and mechanical
utilities.
D. Protect electrical and mechanical services and utilities. Where removal of existing utilities and
pavement is specified or indicated, provide approved barricades, temporary covering of exposed
areas, and temporary services or connections for electrical and mechanical utilities.
1.12 BURNING
A. Burning will not be permitted.
1.13 RELOCATIONS
•
A. Perform the removal and reinstallation of relocated items as indicated with workmen skilled in
the trades 'involved. Repair items to be relocated that are damaged or replace damaged items
with new undamaged items as approved by the contracting officer.
1.14 SITE ACCESS
A. Do not obstruct vehicle traffic on adjacent streets, drive lanes, fire lanes, parking areas,
easements, and loading areas, without written permission from Owner and public authorities
having jurisdiction. .
B. Do not obstruct foot traffic and power driven ground maintenance equipment traffic on park
drive lanes, walks, playing fields, playgrounds, and building exit passageways without written
permission from Owner and public authorities having jurisdiction.
C. Do not obstruct the Owner's and public use of adjacent facilities without prior written
permission from Owner.
02054 TIGARD HIGH SCHOOL ADDITION / REMODEL — PHASE 1
FEB 04 TIGARD- TUALATIN SCHOOL DISTRICT 23J 02200 -2
Printed 02/04/04
SECTION 02200 -
SITE DEMOLITION
•
PART 2 PRODUCTS -
2.1 Not used in this section.
PART 3 EXECUTION
3.1 EXISTING SITE FACILITIES TO BE REMOVED
A. Utilities and Related Equipment: Remove existing utilities as indicated and terminate in a
manner conforming to the nationally recognized code covering the specific utility. Remove
meters and related equipment and deliver to Owner. If utility lines are encountered that are not
shown on drawings, contact the Owner for further instructions.
B. Paving and Slabs: Remove ground, scarified, sawcut, concrete and asphaltic concrete paving
and slabs including aggregate base as indicated to permit installation of new work. Provide neat
sawcuts at limits of pavement removal as indicated.
3.2 ENVIRONMENTAL REQUIREMENTS
A. Do not perform coring and sawing of concrete and masonry from 5:00 p.m. to 8:00 a.m. . on
weekdays in densely populated neighborhoods without permission from Owner's representative.
B. Schedule other noisy construction activities with Owner's representative.
C. During dry weather, sprinkle exposed soil materials and demolition debris with water to limit
dust in the air.
D. Do not cause soil erosion, flooding, or contaminated runoff with sprinkling activities.
E. Do not begin site demolition until known hazardous materials have been removed from the
construction area.
3.3 FILLING
A. Fill holes, open basements, and other hazardous openings in accordance with Section 02315,
"Earthwork."
3.4 DISPOSITION OF MATERIAL
A. Title to Materials: Except where indicated, all materials and equipment once removed, and not
reused, shall become the property of the contractor and shall be removed from the project site.
The Owner will not be responsible for the condition or loss of, or damage to, such property after
contract award. Materials and equipment shall not be viewed by prospective purchasers or sold
on the site.
B. Reuse of Materials and Equipment: Remove and store materials and equipment listed and
indicated to be reused or relocated to prevent damage, and reinstall as the work progresses.
C. Salvaged Materials and Equipment: Remove materials and equipment that are indicated and
specified to be removed by the contractor and that are to remain the property of the Owner, and
deliver to a storage site, as directed within 10 miles of the work site.
3.5 CLEANUP
A. Debris and Rubbish
02054 TIGARD HIGH SCHOOL ADDITION / REMODEL — PHASE 1
FEB 04 TIGARD - TUALATIN SCHOOL DISTRICT 23J 02200 -3
Primed 02/04/04
SECTION 02200
SITE DEMOLITION
- 1. Remove and transport debris and rubbish in a manner that will prevent spillage on
pavements, streets or adjacent areas. Limit to 3/8 cubic yard capacity buggies or other
conveyances used on roofs and within the building to transport removed debris to chute
locations. Clean up spillage from pavements, streets and adjacent areas. Conform to
other applicable requirements under Section 02350.
END OF SECTION
02054 TIGARD HIGH SCHOOL ADDITION / REMODEL — PHASE 1
FEB 04 TIGARD - TUALATIN SCHOOL DISTRICT 23J 02200 -4
Milted 02/04/04
SECTION 02315
EARTHWORK
PART 1 GENERAL
1.1 GENERAL REQUIREMENTS
• A. Drawings and general provisions of the Contract, including General and other Conditions and
Division 1 — General Requirements sections, apply to the work specified in this section.
1.2 WORK INCLUDED
A. Excavation and fill to attain indicated grades.
B. Excavation for roadway, grading, and sidewalks.
C. Rough and finish grading.
D. Surface dressing and base course for pavements and sidewalks.
1.3 RELATED WORK
A. Section 02316 - Trenching, Backfilling and Compaction
B. Section 02350 - Geotextile Fabrics
C. Section 02370 - Slope Protection and Erosion Control
1.4 REFERENCES
A. American Society for Testing and Materials (ASTM)
1. ASTM D698 Moisture Density Relation of Soils
2. ASTM D1556 Density of Soil in Place by Sand Cone Method
3. ASTM 1557 Moisture Density Relations of Soil and Soil Aggregate
4. ASTM D2922 Moisture Density Relation of Soil & Soil Aggregate by Nuclear
Methods
5. ASTM D3017 Moisture Content of Soil in Place by Nuclear Methods
B. Oregon Department of Transportation / Oregon Chapter American Public Works Association
1. Oregon Standard Specifications for Construction (OSSC)
1.5 DEFINITIONS
A. Not used in this section.
1.6 SUBMITTALS
A. Soil compaction test results.
•
02054 TIGARD HIGH SCHOOL ADDITION / REMODEL — PHASE 1
FEB 04 TIGARD - TUALATIN SCHOOL DISTRICT 23J 02315 -1
Printed 02/1 0/04
SECTION 02315
EARTHWORK
B. Certified Laboratory Test Reports: Test reports including grain size distribution, optimum
moisture content and plasticizing index shall be submitted for the following:
1. Structural fill material
2. General backfill beside structures.
3. Aggregate base course and leveling course material.
4. Drainage aggregate material.
C. Manufacturer's Certificates of Compliance: Synthetic fiber filter cloth.
D. Contractor Furnished Shoring and Sheeting Plan: Describe materials or shoring system to be
used. Indicate whether or not any components will remain after filling or backfilling. Provide
plans, sketches, or details, along with calculations by a registered professional engineer.
Indicate sequence and method of installation and removal.
E. Dewatering System: Describe methods to be employed in removing water from exposed
surfaces and diverting water from other areas or structures. Describe the basic components of
the dewatering system proposed and its planned method of operation. During the operation of
the plan, submit the dewatering performance records weekly.
1.7 QUALITY ASSURANCE
A. Approval Required: All fill material subject to approval of the owner /soils engineer.
B. Backfilling Prior to Approval:
1. Do not allow or cause any of the work performed or installed to be covered up or
enclosed by work of this section prior to all required inspections, test and approvals.
2. Should any of the work be enclosed or covered up prior to approval, uncover work at no
additional cost to owner.
3. After work has been completely tested, inspected and approved, make all repairs and
replacements necessary to restore the work to the condition in which it was found at the
time of uncovering; all at no additional cost to the owner.
C. Unfavorable Weather: Do not place, spread, or roll fill material during unfavorable weather
conditions. Do not resume operations until moisture content and soil density are satisfactory to
the owner.
1.8 DELIVERY, STORAGE AND HANDLING
A. Deliver and store materials in a manner to prevent contamination or segregation.
B. Store synthetic fiber filter cloth to prevent exposure to direct sunlight in accordance with the
manufacturer's recommendations.
1.9 SCHEDULING AND SEQUENCING
A. Not used in this section.
02054 TIGARD HIGH SCHOOL ADDITION / REMODEL — PHASE 1
•
FEB 04 TIGARD - TUALATIN SCHOOL DISTRICT 23J 02315 -2
Printed 02/10/04
SECTION 02315
• EARTHWORK
1.10 'PROTECTION -
A. Shoring and Sheeting: Provide shoring and sheeting where indicated. Prevent undermining of
pavements and slabs. Slope banks where space permits.
B. Dewatering: Include the disposal of surface water which may accumulate in open excavations,
unfinished fills, or other low areas. Remove water by trenching where approved, pumping, or
other methods to prevent softening of exposed surfaces. Surface dewatering plan shall include
the rerouting of any storm water run -off or natural drainage if necessary.
C. Utilities: Movement of construction machinery and equipment over pipe and utilities during
construction shall be at the contractor's risk. Perform all work adjacent to privately owned
utilities as indicated in accordance with procedures outlined by utility company. For work
immediately adjacent to or for excavations exposing a utility or other buried obstruction, use
hand or light equipment excavation. Support uncovered lines or other existing work as affected
by the contract excavation.
D. Protection and Restoration of Surfaces: Protect newly graded areas from traffic, erosion, and
settlements. Repair and re- establish damaged or eroded slopes, elevations, or grades and restore
surface construction prior to acceptance. Protect existing streams, ditches, and storm drain
inlets from water -borne solid by means of straw bale dikes and/or filter fabric dams as indicated.
PART 2 PRODUCTS
2.1 STRUCTURAL FILL MATERIAL
A. On -Site Material: Excavated onsite native material shall not be used as structural fill material
under structures or pavements.
B. Imported Material: Selected natural fill material from off -site borrow shall consist of the
following or a blend thereof well graded free draining or crushed rock up to 1 -1/2" in maximum
size with not more than. 5% of fines passing through a #200 sieve.
C. Pit Run Material: Pit run material 3" minus with less than 5% passing a #4 sieve.
2.2 GENERAL BACKFILL BESIDE STRUCTURES
A. On -Site Material: Clean, on site native material, is suitable for use as General Backfill Beside
Structures if it can be placed in accordance with these specifications. Excavated onsite native
material shall not be used as Structural Fill Material under structures or pavements. Stock piled
onside excavated native material used as general backfill shall be free of all organic material
and shall be within 3% of optimum moisture content.
B. Imported Material: Imported fill material for General Backfill Beside Structures from off -site
borrow shall consist of the following or a blend thereof well graded free draining or crushed
rock up to 1 -1/2" in maximum size with not more than 5% of fines passing through a #200
sieve.
2.3 ASPIIALTIC CONCRETE PAVING AGGREGATE BASE COURSE MATERIAL
A. Base Course Material: 1 -1/2" minus well graded crushed rock with less than 5% of fines passing
through a #200 sieve.
B. Leveling Course Material: 3/4" minus well graded crushed rock with less than 5% of fines
passing through a #200 sieve.
02054 TIGARD HIGH SCHOOL ADDITION / REMODEL — PHASE 1
FEB 04 TIGARD- TUALATIN SCHOOL DISTRICT 23J 02315 -3
Printed otii 0/04
SECTION 02315
EARTHWORK
2.4 GEOTEXTILE FILTER FABRIC
A. See Section 02350, "Geotextile Fabrics."
PART 3 EXECUTION
3.1 QUANTITIES
A. The construction documents make no representation or warrantees .of soil quantities. Contractor
is responsible for determining all quantities of materials necessary to complete the project.
B. All necessary imported soil materials as shown in the design documents shall be supplied by the
Contractor. Excess onsite excavated material stockpiled and not used elsewhere on the project
shall be removed from the site at the end of the project at the Contractor's expense.
3.2 SITE STRIPPING AND FILL
A. Site Stripping: All topsoil and organic bearing material, including fill, shall be stripped and
wasted off site. If organic soils are found after the stripping operation, localized areas
containing these materials shall be over - excavated and backfilled with engineered structural fill.
B. Grubbing: Grub out all stumps and roots larger than 1 -1/2 inches in diameter. Remove all scrap
metal and foreign materials.
C. Disposal: Remove all existing paving, concrete, and structures as required for demolition.
Cleared and demolished materials to be removed from the site.
3.3 AVOIDANCE AND CORRECTION OF DETRIMENTAL OPERATIONS
A. Perform all operations involved in excavating, hauling, and placing of earthwork materials so no
damage or detriment to the completed or partially completed work results. At all times provide
sufficient drainage of completed or partially completed earthwork to prevent damage or loss due
to rainfall, surface water or any other cause.
3.4 ROUNDING OF CUTBANKS
A. As part of the earthwork, blend the tops of cutbanks with the adjacent ground by rounding as
called for by the plans.
3.5 TEMPORARY EXCAVATION AND SHORING
A. In general, cuts of less than four feet in depth may be made as steep as the soil can stand,
without shoring. Open cuts greater than four feet in depth shall be either shored or graded to a
safe slope. Temporary excavation slope should not be steeper than 1.5:1 (Horizontal:Vertical).
B. The selection and construction of any shoring system should be the responsibility of the
contractor. The installation of any shoring system shall be conducted such that the safety of
workmen, equipment, existing utilities and structures are ensured. All shoring systems shall be
in compliance with the current local, state and federal codes and practices.
3.6 DRAINAGE AND DEWATERING
A. Plan for and provide the structures, equipment, and construction for the collection and disposal
of surface and subsurface water encountered in the course of construction.
02054 TIGARD HIGH SCHOOL ADDITION / REMODEL — PHASE 1
FEB 04 .TIGARD- TUALATIN SCHOOL DISTRICT 23J 02315 -4
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•
SECTION 02315
EARTHWORK
B. If groundwater is present in excavations, the bottom shall be over - excavated an additional 12 -18
inches and replaced with compacted base course material.
C. Dispose of surface water which may accumulate in open excavations, unfinished fills, or other
low areas. Remove water by trenching where approved, pumping, or other methods to prevent
softening of exposed surfaces.
D. Groundwater flowing toward or into excavations shall be controlled to prevent sloughing or
excavation slopes and walls, boils, uplift and heave in the excavation and to eliminate
interference with orderly progress of construction. French drains, sumps, ditches or trenches
will not be permitted within 3' of the foundation of any structure.
E. Operate the dewatering system until construction work below existing water levels is complete.
3.7 EXCAVATION
A. Excavate for slabs, and other improvements to sizes and levels shown or required. Allow for
form clearance and for proper compaction of required backfilling material.
B. All footings bases to bear on firm, natural, undisturbed soil free of organic material or on
engineered fill.
C. All soft, wet soil, or soil of unusual condition shall be excavated to firm, natural, undisturbed
soil, and backfilled with specified fill materials.
D. Contractor's Inadvertent Over - Excavation: Backfill and compact all over - excavated areas as
specified for fill below at no additional cost to the owner.
E. Excess Fill Materials: All excavated materials not required for backfilling or other portions of
the work shall be removed from the site.
F. Pile Supported Foundations: Excavate to elevation of bottom of pile cap. Backfill and compact
over excavations and changes in grade due to pile driving operations in accordance with the
requirements.
G. Rock: Remove rock to the elevations required by approved methods in such a manner that will
leave the foundation rock in an unshattered and solid condition. Roughen level surfaces and cut
slope surfaces into benches for bond with concrete. Protect shale from conditions causing
decomposition along joints or cleavage planes and other types of erosion. Removal of rock
beyond the lines and grades indicated unless previously authorized will not be grounds for claim
of additional payment.
3.8 FILLING AND BACKFILLING
A. Subgrade Preparation: Step, bench, or break up sloped surfaces steeper than one vertical to 4
horizontal so that the fill material will bond with or be securely keyed to the existing material.
Scarify existing surface to a minimum depth of 12" if subgrade density is less than the degree of
compaction specified and recompact. When the subgrade is part fill and part excavation or
natural ground, scarify the excavated or natural ground portion to a depth of 12" and recompact
as specified for the adjacent of overlying fill. Compact with equipment well suited to the soil
being compacted. Moisten or aerate material as necessary to provide the moisture content that
will readily facilitate obtaining the specified compaction with the equipment used.
02054 TIGARD HIGH SCHOOL ADDITION / REMODEL — PHASE I
FEB 04 TIGARD- TUALATIN SCHOOL DISTRICT 23J 02315 -5
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SECTION 02315
EARTHWORK
B. General Backfill Beside Structures: Place required backfill material adjacent to structures and
compact in a manner that prevents wedging action or eccentric loading upon or against the
structures. Step or serrate slopes bounding or within areas to be backfilled to prevent sliding of
the fill. Moisten or aerate material as necessary to provide the moisture content that will readily
facilitate obtaining the specified compaction with the equipment used. Do not place material on
surfaces that are muddy, frozen, or contain frost. Do not use equipment for backfilling
operations or for the formation of embankments against structures that will overload the
structure. Backfilling against concrete will be done only after the concrete has attained its 28-
day compressive strength.
C. Structural Fill: Place structural fill under structures in loose lifts of 8 ". Do not place material on
surfaces that are muddy, frozen, or contain frost. Compact with equipment well suited to the
soil being compacted. Moisten or aerate material as necessary to provide the moisture content
that will readily facilitate obtaining the specified compaction with the equipment used.
Compact each lift as specified herein before placing the overlaying lift. Compaction shall be
accomplished continuously over the entire area. Sufficient passes shall be made to ensure that
specified density is obtained.
3.9 WET WEATHER EARTHWORK
A. If earthwork takes place in wet weather or wet conditions, where control of soil moisture content
is not possible, the following recommendations are to be as follows:
1. Earthwork shall be accomplished in small sections and carried through to completion to
minimize exposure to wet weather. If there is to be traffic over the exposed subgrade,
the subgrade shall be protected with a compacted layer of 1 -1/4" minus crushed rock, at
least 8" thick.
2. The ground surface in the construction areas shall be sloped and sealed with a smooth
drum roller to promote the rapid runoff of precipitation and to prevent ponding of water.
No soil shall be left uncompacted. Soils which become too wet for compaction shall be
removed and replaced with clean granular material.
3. Work areas, soil stockpiles, or slopes shall be covered with plastic, and sloping, ditching
sumps, dewatering and other measures should be employed as necessary to permit proper
completion of the work. Bales of straw and geotextile sediment fences shall be used to
control soil erosion.
3.10 COMPACTION STANDARDS
A. Native, in -situ soils underlying retaining wall foundations, building foundations, floor slabs
and/or pavements or structural fill shall be proof - rolled to a uniform dry density of 95% of the
Modified Proctor maximum dry density (ASTM D1557).
B. All Structural Fill Material beneath footings, slabs, walls, and structures shall be spread in
uniform lifts not to exceed eight inches in thickness and compacted to 95% of its maximum
Modified Proctor (ASTM D1557) dry density. The water content at the time of compaction
shall be within 3 percent of optimum.
C. Structural Fill Material supporting pavement structures shall be placed in layers not exceeding 8
inches in compacted thickness. Each layer of structural fill shall be compacted to a uniform dry
density of 95 percent of the Modified Proctor maximum dry density (ASTM D1557). It shall be
tested for compaction as construction progresses. Water content at the time of compaction shall
be within 3 percent of optimum.
02054 TIGARD HIGH SCHOOL ADDITION / REMODEL — PHASE 1
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SECTION 02315
EARTHWORK
D. General Backfill beside structures shall be placed in layers not to exceed 8" in thickness -and
compacted to 92 percent of its maximum modified proctor (ASTM D 1557) dry density. Water
content at the time of connection shall be within 3 percent of optimum.
E. Base course and leveling course materials for paving areas shall be compacted to 95 percent of
the Modified Proctor dry density (ASTM D1557).
3.11 GRADING
A. Rough Grading:
1. Bring all finish grades to approximate levels indicated on drawings. Where grades are
not otherwise indicated, finish grades are to be same as adjacent sidewalks, curbs or the
obvious grade of adjacent structure.
2. Grade to uniform levels or slopes between points where grades are given. Round off
surfaces; avoid abrupt changes in levels.
3. Rough grade to allow for depth of concrete slabs, walks, and their gravel bases.
4. Grade for the paved drive area as indicated and specified herein and provide for drainage
as shown, allowing for thickness of surfacing material.
B. Finish Grading: At completion of job and after back filling by other crafts has been completed,
refill and compact areas which have settled or eroded to bring to fmal grades.
C. Grading Tolerances:
1. Rough Grade: Building and paving areas; 0.1 feet.
2. Finish Grade: Granular cushion under concrete slabs and paving, .01 foot.
D. Treatment After Completion of Grading: After grading is completed and subsequent to testing
and inspection, prohibit further excavating, filling or grading except with the approval of owner.
3.12 SUBGRADE FILTER FABRIC
A. Place synthetic fiber filter fabric as indicated in Section 02350, "Geotextile Fabrics."
3.13 DISPOSITION OF SURPLUS MATERIAL
A. Surplus or other soil material not required or suitable for filling backfilling, or embankment
shall be removed from owner's property.
3.14 TESTING
A. Test fill materials for moisture density relations in accordance with ASTM D -1557.
B. Perform density tests in randomly selected locations and in accordance with ASTM D1556 or
ASTM D2922 and ASTM D3017 as follows:
1. One test per 10,000 square feet in each layer of lift.
2. One test per 500 cubic yard placed.
END OF SECTION
02054 TIGARD HIGH SCHOOL ADDITION / REMODEL — PHASE 1
FEB 04 TIGARD-TUALATIN SCHOOL DISTRICT 23J 02315 -7
hinted 02/10/04
SECTION 02316
TRENCHING, BACKFILLING AND COMPACTION
PART 1 GENERAL
1.1 GENERAL REQUIREMENTS
A. Drawings and general provisions of the Contract, including General and. other Conditions and
Division 1— General Requirements sections, apply to the work specified in this section.
1.2 WORK INCLUDED
A. Work in this section includes, but is not necessarily limited to trenching and trench backfill
necessary for complete installation of all underground items not covered by other sections of
these specifications.
1.3 RELATED WORK
A. Section 02315 — Earthwork
B. Section 02350 - Geotextile Fabrics
C. Section 02530 — Sanitary Sewer
D. Section 02630 - Storm Drainage System
E. Division 15 — Mechanical
F. Division 16 - Electrical
1.4 REFERENCES
A. American Society of Testing and Materials (ASTM)
1. ASTM D 1556 Density of Soil in Place by Sand Cone Method
2. ASTM D1557 Moisture Density Relations of Soil & Soil Aggregate
B. Oregon Department of Transportation/Oregon Chapter American Public Works
1. Oregon Standard Specification for Construction (OSSC).
1.5 DEFINITIONS
A. Not used in this section.
1.6 SUBMITTALS
A. Soil compaction test results.
B. Certified Laboratory Test Reports: Test reports including grain size distribution, optimum
moisture content and plasticizing index shall be submitted for the following:
1. Trench foundation material.
2. Pipe bedding material.
02054 TIGARD HIGH SCHOOL ADDITION / REMODEL — PHASE 1
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SECTION 02316
TRENCHING, BACKFILLING AND COMPACTION
3. Pipe zone material.
4. Trench backfill material.
5. Drainage aggregate material.
C. Manufacturer's Certificates of Compliance: Synthetic fiber filter cloth.
D. Contractor Furnished Shoring and Sheeting Plan: Describe materials or shoring system to be
used. Indicate whether or not any components will remain after filling or backfilling. Provide
plans, sketches, or details, along with calculations by a registered professional engineer.
Indicate sequence and method of installation and removal.
E. Dewatering System: Describe methods to be employed in removing water from exposed
surfaces and diverting water from other areas or structures. Describe the basic components of
the dewatering system proposed and its planned method of operation. During the operation of
the plan, submit the dewatering performance records weekly.
1.7 QUALITY ASSURANCE
A. Owner will employ and pay for independent testing laboratory to conduct compaction tests on
all backfilling operations.
B. Prior to any excavation, utility locates shall be done per OAR 952 -001.
1.8 DELIVERY, STORAGE AND HANDLING
A. Not used in this section.
1.9 SCHEDULING AND SEQUENCING
A. Not used in this section.
PART 2 PRODUCTS
2.1 TRENCH FOUNDATION MATERIAL
A. On -Site Material: Native material may be used as trench foundation if it is firm, clean, and
undisturbed.
B. Imported Material: Selected natural fill material from off -site borrow shall consist of the
following or a blend thereof well graded free draining or crushed rock up to 1 -1/2" in maximum
size with not more than 5% of fmes passing through a #200 sieve.
2.2 PIPE BEDDING MATERIAL
A. Imported Material: 3/4" minus well graded crushed rock with less than 5% of fines passing
through a #200 sieve.
. 2.3 PIPE ZONE MATERIAL
A. Imported Material: 3/4" minus well graded crushed rock with less than 5% of fmes passing
through a #200 sieve.
02054 TIGARD HIGH SCHOOL ADDITION / REMODEL — PHASE 1
FEB 04 • TIGARD- TUALATIN SCHOOL DISTRICT 23J 02316 -2
Printed 02/04/04
SECTION 02316
TRENCHING, BACKFILLING AND COMPACTION
2.4 TRENCH BACKFILL MATERIAL
A. On -Site Material (Not Under Structures or Paving): Clean, on site native material, is suitable
for use as Trench Backfill Material in areas not under structures or paving if it can be placed in
accordance with these specifications. Excavated onsite native material shall not be used as
Trench Backfill Material under structures or pavements. Stock piled onsite excavated native
material used as general backfill shall be free of all organic material and shall be within 3% of
optimum moisture content.
B. Imported Material (Under Structures or Paving): Selected natural fill material from off -site
borrow shall consist of the following or a blend thereof well graded free draining or crushed
rock up to 1 -1/2" in maximum size with not more than 5% of fines passing through a #200
sieve.
PART 3 EXECUTION
3.1 GENERAL
A. All compaction with vibratory machinery must be completed on an owner nonproduction
weekend and coordinated with the owner.
3.2 TRENCH EXCAVATION
A. Trench excavation and backfill in accordance with any and all specifications of any controlling
regulatory agency under which the work is being performed.
B. Excavate the trench to lines and grades shown or established with proper allowance for pipe
thickness. The subgrade upon which the bedding is to be placed shall be firm, undisturbed and
true to grade. If the trench is over - excavated, restore to grade with materials specified for pipe
bedding at no expense to owner. Place material over the full width of the trench and compact in
layers not exceeding 6 inches deep to establish grade with allowance for the pipe bedding.
C. Dispose of all excess material (not required elsewhere on the project) offsite at contractor's
expense.
•
D. Provide all materials, labor and equipment necessary to adequately shore trenches to protect the
work, existing property, utilities, pavement, etc., and provide safe working conditions in the
trench. Method of shoring in accordance with the contractor's design. Damages resulting from
improper cribbing or shoring will be the sole responsibility of the contractor.
E. Locate excavated material in such a manner that it does not create a hazard to pedestrian or
vehicular traffic, nor interfere with the function of existing drainage facilities.
F. Remove and dispose of existing and damaged sewer pipe and structures.
G. Plan and layout trenches to avoid root structures of trees indicated to remain.
3.3 DRAINAGE AND DEWATERING
A. Plan for and provide the structures, equipment, and construction for the collection and disposal
of surface and subsurface water encountered in the course of construction.
B. If groundwater is present in excavations, the bottom shall be over - excavated an additional 12 -18
inches and replaced with compacted base course material.
02054 TIGARD HIGH SCHOOL ADDITION / REMODEL — PHASE 1
FEB 04 TIGARD- TUALATIN SCHOOL. DISTRICT 23J 02316 -3
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SECTION 02316
TRENCHING, BACKFILLING AND COMPACTION
C. Surface water shall be directed away from excavation and construction sites so as to prevent
erosion and undermining of foundations. Diversion ditches, dikes and grading shall be provided
and maintained as necessary during construction. Excavated slopes and backfill surfaces shall be
protected to prevent erosion and sloughing. Excavation shall be performed so that the site and
the area immediately surrounding the site and affecting operations at the site shall be continually
and effectively chained.
D. Dewatering: Groundwater flowing toward or into excavations shall be controlled to prevent
sloughing of excavation slopes and walls, boils, uplift and heave in the excavation and to
eliminate interference with orderly progress of construction. French drains, sumps, ditches or
trenches will not be permitted within 3 feet of the foundation of any structure.
3.4 PAVED AREAS
A. Sawcut paved areas for utility trenching. Allow for new paving overlap beyond trench sidewall
as indicated. Do not disturb adjacent paving more than necessary.
3.5 PROTECTION
A. Underground Utilities: Location of any existing utilities indicated is approximate. The
contractor shall physically verify the location and elevation of the existing utilities indicated
prior to starting construction. The contractor shall contact the contracting officer for assistance
in locating existing utilities.
B. Structures and Surfaces: Protect newly backfilled areas and adjacent structures, slopes, or
grades from traffic, erosion settlement, or any other damage. Repair and reestablish damaged or
eroded grades and slopes and restore surface construction prior to acceptance. Protect existing
streams, ditches, and storm drain inlets from water -borne soil by means of erosion control
measures as indicated on the contract drawings.
C. Channels and Ditches: 'Construct (rip -rap) rock protection in areas indicated to the lines and
thicknesses indicated to dissipate stream energy and prevent channel erosion. Place rip -rap on a
layer of filter fabric.
3.6 TRENCH FOUNDATION
A. Trench foundation is defined as the bottom of the trench in which the pipe bedding is to lay and
is responsible for support of the pipe.
B. When in the judgment of the owner, the existing material in the bottom of the trench is
unsuitable for supporting the pipe, excavate below the pipe as directed. Place backfill in trench
to subgrade or pipe bedding with trench foundation material over full width of the trench and
compact layers not exceeding 6 inches deep to the required grade.
3.7 PIPE BEDDING
A. Pipe bedding is defined as the furnishing and placing of specified materials on the trench
foundation so as to uniformly support the barrel of the pipe.
B. Pipe bedding consists of leveling the bottom of the trench or the top of the foundation material
and placing bedding material to the horizontal centerline of the pipe. Place specified bedding
material in at least two lifts. Place first lift to provide the minimum 6 inch depth of bedding
material shown on the plan before the pipe is installed. Spread bedding smoothly to proper
grade so the pipe is uniformly supported along the barrel and excavate bell holes at each joint to
permit proper assembly and inspection of the entire joint. Provide firm unyielding support along
02054 TIGARD HIGH SCHOOL ADDITION / REMODEL — PHASE 1
FEB 04 TIGARD- TUALATIN SCHOOL DISTRICT 23J 02316 -4
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SECTION 02316
TRENCHING, BACKFILLING AND COMPACTION
the entire pipe length.
C. Place subsequent lifts of not more than 6 inches in thickness up to the horizontal centerline of
the pipe. Bring lifts up together on both sides of the pipe and carefully work under the pipe by
slicing with a shovel or other approved procedure. Pay particular attention to the area from the
flow line to the horizontal centerline of the pipe or top of bedding to insure that firm support is
obtained to prevent any lateral movement of the pipe during the final backfilling of the pipe
zone. Place pipe bedding full width of trench.
3.8 PIPE ZONE
A. Pipe zone is defined, as the full width of the trench from the top of the bedding to 6 inches above
the top outside surface of the barrel of the pipe.
B. Place specified pipe zone material carefully around the pipe in 6 inch layers and thoroughly
hand tamp with approved sticks supplemented by walking in and slashing with a shovel.
Prevent pipe from moving either horizontally or vertically during placement and compaction of
the pipe zone material. Mechanical compactors are prohibited for placement of fill in the pipe
zone. Compact pipe zone to 90% of maximum density per ASTM D1557.
3.9 TRENCH BACKFILL
A. Trench backfill is defined as furnishing, placing and compacting of material in the trench
between the top of the pipe' zone material and the bottom of the pavement base rock ground
surface or surface material as directed.
B. Owner's representative will sample excavated material to determine suitability of native material
for use as trench backfill. Should native material not be acceptable, imported trench backfill
material will be used as previously specified under materials.
C. Backfill trench above the pipe zone to within 8 inches of the final surface grade shown on the
plans in lifts not to exceed 8 inches of loose depth. In unpaved areas, compact each lift to
minimum 92% of maximum density as determined by ASTM D1557 with mechanical vibrators
or impact tampers. Compact trench areas at paving and inside building areas to 95% of
maximum density as determined by ASTM D1557.
3.10 MANHOLES, VAULTS, AND OTHER APPURTENANCES
A. Provide at least 12" clear from outer surfaces to the embankment or shoring. Remove unstable
soil that is incapable of supporting the structure to an overdepth of 12" and refill with pipe
bedding material to the proper elevation. Compact to 90 percent of ASTM D 1557 maximum
density.
3.11 BURIED WARNING IDENTIFICATION TAPE
A. Install tape in accordance with manufacturer's recommendations except as modified herein.
Bury tape 12" below finished grade; under pavements and slabs, bury tape 6" below top of
subgrade.
3.12 TEMPORARY TRENCH PLATING
A. When temporary steel plates are installed over a street cut, they shall be capable of carrying at
least an MS -18 loading. Place steel plates with a minimum of 12 inches bearing on all sides of a
cut. Anchor steel plates to minimize shifting. Shim the edges of all steel plates with cold mix
asphalt.
02054 TIGARD HIGH SCHOOL ADDITION / REMODEL — PHASE 1
FEB 04 TIGARD - TUALATIN SCHOOL DISTRICT 23J 02316 -5
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•
SECTION 02316
TRENCHING, BACKFILLING AND COMPACTION
3.13 TOPSOIL AREAS
A. Where trenches cross lawns, garden areas, pastures, cultivated fields or other areas on which
topsoil exists, remove the topsoil to a minimum 12 inch depth and place the material in a
stockpile. Do not mix the topsoil with other excavated material. After the trench has been
backfilled, replace the topsoil. In lieu of stockpiling the topsoil, approved imported topsoil may
be substituted.
B. Maintain the fmished grade of the topsoil level with the area adjacent to the trench until final
acceptance. Repair damage to adjacent topsoil caused by the contractor's operations. Remove
all rock, gravel, clay and other foreign materials from the surface. Regrade and add topsoil as
required.
3.14 PAVED AREAS
A. Use saws to cut Portland cement concrete pavement, curbs and sidewalks, regardless of
thickness. In bituminous pavement, when no pavement overlay will occur, saw -cut the
pavement along each edge the area to be removed. Saw cutting is not required in roadways
that will receive a pavement overlay.
•
B. Upon completion of backfill and just prior to pavement re- surfacing, saw the surfacing on both
sides of the trench a minimum of 6 inches wider than each top of the trench. In areas of any
undermined or damaged surfacing, re -saw to a width outside these areas. When saw - cutting,
follow lines parallel to the pipe centerline.
C. Where the width changes in areas of asphalt pavement re- surfacing, cut the transition between
the different widths at 45 degrees. When the pipe line changes direction, or there is a
connecting pipe line that requires the saw cut alignment to change at an angle greater than 60
degrees, make a minimum 24 inch transition saw cut. If there is damaged or undermined
surfacing. Make the transition saw cut angle half the angle change in the direction of the pipe
line or connecting line.
•
D. A second saw cut for concrete sidewalks, driveways and pavements will not be required unless
needed to reach firm subgrade.
3.15 FINISH OPERATIONS
A. Place final proper surface as required. Subsequent settlement of the trench during warranty
period will be considered result of improper compaction and shall be promptly corrected.
•
B. Pavement Repair: Repair pavement, curbs, and gutters as indicated. Do not repair pavement
until trench or pit has been backfilled and compacted as specified herein. Provide a temporary
road surface of gravel over backfilled portion until permanent pavement is repaired. Remove
and dispose of temporary road surface material when permanent pavement is placed. As a
minimum, maintain one -way traffic on roads and streets crossed by trenches. Fully open roads
and streets to traffic within 3 days.
3.16 FIELD QUALITY CONTROL
A. Test bedding and backfill materials for conformance to specified requirements. Test bedding and backfill
- for moisture- density relations in accordance with ASTM D 1557 as specified herein. Perform at least one
of each of the required tests for each material provided. Perform sufficiently in advance of construction so
as not to delay work. Provide additional tests as specified above for each change of source. Perform
density and moisture tests in randomly selected locations and in accordance with ASTM D 1556 as
follows:
02054 TIGARD HIGH SCHOOL ADDITION / REMODEL — PHASE 1
FEB 04 TIGARD - TUALATIN SCHOOL DISTRICT 23J 02316 -6
Printed 02/04/04
SECTION 02316
TRENCHING, BACKFILLING AND COMPACTION
1. Bedding and backfill in trenches: One test per 100 feet in each lift.
2. Appurtenance Structures: One test per 10 square yards or fraction thereof in each lift.
END OF SECTION
•
02054 TIGARD HIGH SCHOOL ADDITION / REMODEL — PHASE 1
FEB 04 TIGARD- TUALATIN SCHOOL DISTRICT 23J 02316 -7
Printed 02/04/04
SECTION 02350
GEOTEXTILE FABRIC
PART 1 GENERAL
1.1 GENERAL REQUIREMENTS
A. Drawings and general provisions of the Contract, including General and other Conditions and
Division 1 — General Requirements sections, apply to the work specified in this section.
1.2 WORK INCLUDED
A. Geotextile fabrics for silt fencing, riprap protection, subdrainage, and subgrade separation.
1.3 RELATED WORK
A. Section 02315 — Earthwork
B. Section 02316 — Trenching, Backfilling and Compaction
C. Section 02370 — Slope Protection and Erosion Control
• D. Section 02620 — Foundation Drainage
1.4 REFERENCES
A. ASTM D 4354 — Standard Practice for Sampling of Geosynthetics for Testing
B. ASTM D 4355 — Deterioration of Geotextiles from Exposure to UL Light and Water
C. ASTM D 4491 — Standard Test Methods for Water Permeability of Geotextiles
D. ASTM D 4632 — Standard Test Method for Grab Breaking Load and Elongation of Geotextiles
E. ASTM D 4751 — Standard Test Method for Determining Apparent Opening Size of a
Geotextile
F. ASTM D 4833 — Standard Test Method for Puncture Resistance of Geotextiles
1.5 DEFINITIONS
A. Not used in this section.
1.6 SUBMITTALS
A. Manufacturer's Data: Submit manufacturer's standard drawings or catalog cuts of each type of
geotextile fabric specified for the project.
B. Quality Assurance Certificates: Submit a certification that each type of geotextile fabric meets
the various ASTM specifications.
C. Sample: Submit a sample of each geotextile fabric.
1.7 QUALITY ASSURANCE
A. Manufacturer shall sample all geotextiles according to ASTM D 4354.
02054 TIGARD HIGH SCHOOL ADDITION / REMODEL — PHASE 1
FEB 04 TIGARD - TUALATIN SCHOOL DISTRICT 23J 02350 -1
Printed 02/04/04
SECTION 02350
GEOTEXTILE FABRIC
B. All geotextiles shall be free of defects, cuts or tears and be resistant to ambient temperatures and
environmental conditions.
1.8 DELIVERY, STORAGE AND HANDLING
A. Protect geotextile at all times from UV rays or contamination by runoff or construction
activities. Traffic or construction equipment will not be permitted directly on the geotextile.
1.9 SCHEDULING AND SEQUENCING
A. Not used in this section.
PART 2 PRODUCTS
2.1 GEOTEXTILE FABRIC
•
A. Woven or nonwoven geofextiles shall be composed of long chain, synthetic polymeric filaments
or yarns formed into a stable network that retains its relative structure during the handling and
placement.
B. At least 95% by weight of the long chain polymers shall be a polyolefm or polyester.
C. Geotextiles shall have the selvege furished so the outer fibers are prevented from pulling away
from the fabric.
D. Fabrics shall meet or exceed the properties specified in the following table. If the fabric
manufacturer's submittal lists typical or typical average values instead of minimum average
values, the required values in the table below will be increased 25 %.
•
Geotextile Test Drainage Riprap Sediment Subgrade
Property Method Geotextile Geotextile Fence Geotextile
Fabric Type - -- Nonwoven Woven Woven Woven
Minimum Grab ASTM D 90 lb 180 lb
Tensile Strength 4632
Apparent Opening ASTM I) No. 70 No. 70 No. 30 No. 30
Size 4751
Minimum ASTM D 0.5 0.5 0.05 0.01
Permittivity (s -1) 4491
Minimum UV ASTM D - -- 70% 70% —
Retained Strength 4355
Minimum Puncture ASTM D 35 lb 80 lb -- 80 lb
Strength 4833
Minimum Grab ASTM D 15% 15% - -- --
Elongation 4632
PART 3 EXECUTION
3.1 GENERAL
A. Prepare the surface receiving the geotextile fabric to a smooth condition free of obstruction,
depressions, and debris unless otherwise directed. Do not drag fabric on ground or mishandle in
any way.
02054 TIGARD HIGH SCHOOL ADDITION / REMODEL – PHASE 1
FEB 04 TIGARD- TUALATIN SCHOOL DISTRICT 23J 02350 -2
Pruned 02/04/04
SECTION 02350
GEOTEXTILE FABRIC
B. Loosely place the fabric without wrinkles so that placement of the overlaying material will not
tear the fabric.
C. During installation, cover the geotextile with the specified cover material as soon as possible.
Do not leave in uncovered condition for more than 5 days.
3.2 OVERLAPS
A. Minimum overlap requirements for geotextiles.
Application Minimum Overlap
Drainage 12 inches
Riprap 24 inches
Subgrade 24 inches
3.3 DRAINAGE GEOTEXTILE
A. When used in trenches for drains, place the geotextile in the trench as shown on plans to loosely
conform to the shape of the trench with no wrinkles or folds.
3.4 RIPRAP GEOTEXTILE
A. Place geotextile under riprap according to details shown. Maximum drop height of riprap
material onto the fabric shall be 24 ". After placing riprap, backfill all voids in the riprap face so
that the geotextile is completely covered and not visible.
3.5 SUBGRADE GEOTEXTILE
A. Prepare subgrade according to Section 02315, "Earthwork ". Correct geotextile failures, as
evidenced by soil pumping or roadbed distortions, by removing any covering material in the
affected area and placing a geotextile patch on the exposed geotextile. Cover the patch with the
specified material and compact before proceeding.
END OF SECTION
02054 TIGARD HIGH SCHOOL ADDITION / REMODEL — PHASE 1
FEB 04 TIGARD - TUALATIN SCHOOL DISTRICT 23J 02350 -3
Printed 02/04/04
SECTION 02370
SLOPE PROTCTION AND EROSION CONTROL
PART 1 GENERAL
1.1 GENERAL REQUIREMENTS
A. Drawings and general provisions of the Contract, including General and other Conditions and
Division 1 — General Requirements sections, apply to the work specified in this section.
1.2 WORK INCLUDED
A. Erosion and sediment control measures taken during construction.
1.3 RELATED WORK
A. Section 02315 — Earthwork
B. Section 02316 — Trenching, Backfilling and Compaction
C. Section 02350 — Geotextiles
•
1.4 REFERENCES
A. Not used in this section.
1.5 DEFINITIONS
A. Not used in this section.
1.6 SUBMITTALS
A. Contractor Developed Erosion and Sediment Control (ESCP): Develop a complete ESCP that .
incorporates the design ESCP and all modifications into it.
1. Erosion and sediment control features, other than those shown on the plans, may be
required depending on the contractor's methods of operation and schedule.
2. Plan shall address treatment and/or prevention of erosion during construction. As a
basis, the contractor may begin with the ESCP presented the project drawings.
3. For each phase of the scheduled work, indicate on the ESCP how the proposed erosion
and sediment control devices will divert and store flows, limit runoff from exposed areas,
filter sediment, and stabilize exposed soils during construction.
B. Implementation Schedule: Submit a complete earthwork implementation schedule which
includes the following information if applicable:
1. Installing perimeter controls
2. Construction phasing
3. General site clearing and grubbing
4. Utility trenching
5. Earthwork for buildings
02054 TIGARD HIGH SCHOOL ADDITION / REMODEL — PHASE 1
FEB 04 TIGARD - TUALATIN SCHOOL DISTRICT 23J 02370 -1
Printed 02/04/04
SECTION 02370
SLOPE PROTCTION AND EROSION CONTROL
6. Earthwork for roads and paving
7.. Temporary stabilization of exposed soil surfaces
8. Work required in wetlands
9. Maintaining and monitoring temporary controls
10. Storage and disposal of waste soil materials
11. Haul road and borrow pit controls
12. Additional controls for wet season work
13. Completion of seeding prior to fall/winter months
C. Manufacturer's Data: Submit manufacturer's standard drawings or catalog cuts of the following
items:
1. Sediment control fencing
2. Erosion control blankets
1.7 QUALITY ASSURANCE
A. Codes and Regulations: All work shall conform to the applicable and local state codes, laws
and regulations including OSHA and Public Works Engineering Standards of local public
authorities with jurisdiction.
B. In particular, all erosion control and surface water design measures shall conform to City of
Tigard requirements.
1.8 DELIVERY, STORAGE AND HANDLING
A. Not used in this section.
1.9 SCHEDULING AND SEQUENCING
A. Not used in this section.
PART 2 PRODUCTS
2.1 . SEDIMENT CONTROL FENCING
A. Provide sediment fence geotextile per Section 02350, "Geotextile Fabrics."
2.2 BIOBAGS
A. Bio- filter bags fill material shall be clean 100% recycled wood product waste. Size of bag shall
be generally 18" x 6" x 30" plastic mesh bags with'' Y2" openings and weigh approximately 45
pounds.
02054 TIGARD HIGH SCHOOL ADDITION / REMODEL — PHASE 1
FEB 04 TIGARD - TUALATIN SCHOOL DISTRICT 23J 02370 -2
Printed 02/04/04
SECTION 02370
SLOPE PROTCTION AND EROSION CONTROL
2.3 STORM DRAIN INLET PROTECTION
A. All gravels shall be washed clean prior to installation on the site. Gravel size shall be no larger
than 1 -1/2" rock and shall be larger than any mesh openings.
B. Wire mesh shall be no greater than ' h" opening size.
C. Wrapped grates shall have fabric ends secured under the grate in such a manner as to not allow
the grate to lift and flows to pass by.
2.4 TEMPORARY GRASS COVER
A. Temporary grass cover must be established by October 1 or other erosion controls measures
such as additional mulch or erosion control blankets will be required until adequate grass
coverage is achieved. Seeding and protective mulch cover shall occur by September 1.
B. Temporary grass cover shall be a dwarf grass mix "Pro -Time Companion" or approved equal.
General mix shall be as follows:
1. Dwarf Perennial Ryegrass80% by seed count
2. Creeping Red Fescue 20% by seed count
3. Application Rate 100 minimum per acre
2.5 MULCH
A. Mulch shall be straw, or hay, air dried, and free from seeds and course material. Minimum
application shall be 2 tons per acre and general depth shall be 3-4 inches.
PART 3 EXECUTION
3.1 PERIMETER CONTROLS
A. Flag all construction site clearing limits. Do not disturb areas outside the flagging limits.
Maintain the flagging during the construction project.
B. Perimeter controls include interceptor ditches, berms in fill areas, and sediment fences. Install
all appropriate perimeter controls before beginning major site grubbing or grading operations.
3.2 WET SEASON WORK
A. Wet season work is defined as work between October 1 and May 30. Before working during the
wet season, meet with local inspector and Owner's representative to review and update the
ESCP and to develop a schedule to ensure that appropriate controls are implemented and
maintained during the wet season work.
B. During wet season work, stabilize soil stockpiles at the end of each workday by diverting flows,
placing covers, or installing sediment barriers around the stockpiles. Limit excavation and bare
ground activities to only that which is required for immediate operations.
C. If soil erosion and sediment resulting from construction activities is not effectively controlled,
the amount of disturbed area shall be limited to that which can be effectively controlled.
02054 TIGARD HIGH SCHOOL ADDITION / REMODEL — PHASE 1
FEB 04 TIGARD - TUALATIN SCHOOL DISTRICT 23J 02370 -3
Printed 02/04/04
SECTION 02370 -
SLOPE PROTCTION AND EROSION CONTROL
D. Incorporate erosion and sediment control measures at the earliest practicable time and according
to the approved implementation schedule and these specifications.
3.3 STABILIZATION
A. Temporary Stabilization: Stabilize exposed soil surfaces not at finish grade at all times and soil
surfaces at finish grades when working outside the permanent seeding dates. Temporary
stabilization includes temporary seeding, mulching, and erosion control matting. Schedule
temporary stabilization on a14-day basis or more frequently if needed.
B. Permanent Stabilization: Permanently stabilize exposed soil surfaces at finished grade.
Permanent stabilization methods include riprap protection, seeding, and mulching. Permanent
stabilization includes stabilization of temporary features such as detours, stockpiles, and staged
earthwork. Immediately perform permanent stabilization at each completed excavation and
embankment area except for areas that are scheduled to be redisturbed.
C. If seed of any kind is applied and has not achieved 70% density of the surrounding existing
grass areas prior to the end of the permanent seeding dates, then apply additional stabilization
measures other than seeding.
3.4 SLOPE PROTECTION AND EROSION CONTROL
A. Site preparation should include the removal of all grasses, brush, and sod. Vehicle and foot
traffic should be minimized on bearing surfaces or above prepared subgrade areas to reduce the
amount of disturbed material that would need to be excavated prior to pouring foundation
concrete or the placement of structural fill.
B. Temporary cut slopes included at 1- 1 /2H:1V or steeper be covered with Visqueen sheeting and
have maintained cutoff or diversion ditches shall be at the top of the slopes to prevent surface
water flowing over the excavation face.
C. Maximum vertical cut section shall be 4 feet for slopes in unweathered glacial till. For cuts
greater than 4 feet high, that portion above the 4 foot vertical section shall be sloped back at not
steeper than 1 H: 1 V. Permanent cut slopes shall be provided with cut -off or diversion ditches at
the top to prevent unrestricted flow of water over the cut bank.
3.5 BIOBAGS
A. At no time shall more than a six inch depth of sediment be allowed to accumulate behind bio-
filter bags or fiber rolls. Sediment should be removed or regarded onto the slope, or new lines
of barriers installed uphill o sediment laden barriers.
B. Once the upslope area in stabilized, bio- filter bags shall be removed or reused onsite. Fiber
rolls may be left onsite as a semi - permanent, biodegradable landscape feature. Bio -filter bags
fill material shall be incorporated as mulch after completion of site work and must be approved
by Unified Sewerage Agency. Removal will necessitate a post construction site visit. The bags
shall be disposed of at a local recycling or solid waste disposal facility.
3.6 MONITORING
A. Receiving Stream: Observe and record turbidity within 25 feet upstream and downstream of
locations where surface waters from the construction site enter the stream. If turbidity is
increased greater than 10% over existing background levels in the stream, further erosion and
sediment control measures will be necessary.
02054 TIGARD HIGH SCHOOL ADDITION / REMODEL — PHASE 1
FEB 04 TIGARD - TUALATIN SCHOOL DISTRICT 23J 02370 -4
Printed 02/04/04
SECTION 02370
SLOPE PROTCTION AND EROSION CONTROL
B. - Sediment Removal: Remove sediment and upgrade or repair as needed within 2 days after the
surrounding area has dried sufficiently to prevent further damage from equipment needed for
repair operations. If rainfall continues over a 24 -hour period or other circumstances preclude
equipment operation in the area, hand carry and install additional sediment control measures as
needed to catch sediment until trapped sediment can be removed.
C. Catch Basins: Maintain catch basin inserts and other forms of inlet protection by removing
trapped sediment when storage capacity has been reduced by 50 %.
D. Sediment Controls: Remove sediment from sediment fences, barriers, check dams, and
sediment traps once it has reached one third of the exposed height of the device or storage
depth. Replace aggregate and rock filter material with new aggregate material when sediment
reduces the filtering capacity of the device by one -half.
E. Biofilter Bags: Replace biofilter bags with clean washed bags when removing sediment from
them. Wash bags in an approved sediment control area.
F. Paved Areas: Keep all paved areas clean for the duration of the project. Use cleaning methods
that do not transport sediment -laden water to receiving streams.
G. Construction Engineers: Add and remove aggregate or other specified material as needed to
maintain the proper function of the construction entrances.
3.7 FINISHING AND CLEAN -UP
A. Within 30 days of notification of acceptance of permanent stabilization, remove temporary
erosion and sediment control devices and materials from the area. Remove accumulated
sediment control devices and materials from the area. Remove accumulated sediment before
removing the devices and materials.
B. Immediately shape and permanently stabilize areas affected by the removal process. All
temporary erosion and sediment control features that are not incorporated into the permanent
work remain the property of the contractor.
C. Do not remove temporary erosion and sediment control devices before permanent stabilization
is accepted.
END OF SECTION
02054 TIGARD HIGH SCHOOL ADDITION / REMODEL — PHASE 1
FEB 04 TIGARD - TUALATIN SCHOOL DISTRICT 23J 02370 -5
Printed 02/04/04
SECTION 02530
SANITARY SEWER SYSTEM
PART 1 GENERAL
1.1 GENERAL REQUIREMENTS
A. Drawings and general provisions of the Contract, including General and other Conditions and
Division 1 — General Requirements sections, apply to the work specified in this section.
1.2 WORK INCLUDED
A. System shall include sanitary drainage lines and branches, manholes, cleanouts, and
connections to 'existing systems. Provide and relocate drainage lines and structures as noted:
1. Sanitary drainage piping.
2. Precast concrete manholes.
3. Clean-out vents.
4. Connections to vents.
5. Connections to existing system.
1.3 RELATED WORK
A. Section 02315 - Earthwork
B. Section 02316 - Trenching, Backfilling, and Compaction
1.4 REFERENCES
A. The publications listed below form a part of this specification to the extent referenced. The
publications are referred to in the text by the basic designation only. Latest editions.
B. American Society for Testing and Materials (ASTM) Publications
1. ASTM C 923 Resilient Connectors Between Reinforced Concrete Manhole
Structures, Pipes and Laterals
2. ASTM D 3034 Type PSM Poly (Vinyl Chloride) (PVC) Sewer Pipe and Fittings
3. ASTM D 3212 Joints for Drain and Sewer Plastic Pipes Using Flexible Elastomeric
Seals
4. ASTM F 402 Safe Handling of Solvent Cements and Primers Used for Joining
Thermoplastic Pipe and Fittings
5. ASTM F 477 Elastomeric Seals (Gaskets) for Joining Plastic Pipe
C. Uni -Bell Plastic Pipe Association (UNI) Publication
1. Installation of Polyvinyl Chloride (PVC) Sewer Pipe
1.5 DEFINITIONS
A. Not used in this section. -
02054 TIGARD HIGH SCHOOL ADDITION / REMODEL — PHASE 1
FEB 04 TIGARD - TUALATIN SCHOOL DISTRICT 23J 02530 -1
Printed 02/04/04
SECTION 02530
SANITARY SEWER SYSTEM
1.6 SUBMITTALS
A. Manufacturer's Data: Submit manufacturer's standard drawings or catalog cuts of the
following items:
1. Fittings
2. Joints and couplings
3. Precast structures and manholes
4. Pipe
B. Manufacturer's Certificates of Conformance: Submit manufacturer's certificates of
conformance or compliance for each of the following materials which are specified to conform
to publications referenced under paragraph, "Materials," in this section:
1. Pipe and fittings, including factory- applied linings
2. Pipe joint materials
3. Cast -iron or welded steel frames, covers, and gratings
4. All tests performed by each applicable referenced publication shall have been
performed, whether specified in that publication to be mandatory or otherwise. For
tests which are not specified in the referenced publications to be performed at definite
intervals during manufacture, the tests shall have been performed within three years of
the date of submittal of certificates on the same type, class, grade, and size of material
as is being provided for the project.
C. Field/Installation Testing: Submit test results for each of the following installation tests:
1. Hydrostatic testing of gravity lines.
2. Hydrostatic testing of manholes.
3. Pressure testing of pressure lines.
4. Deflection testing for flexible pipe.
5. Television inspection results of pipes.
1.7 QUALITY ASSURANCE
A. Codes and Regulations
1. All work and materials shall conform to City of Tigard requirements.
2. Whenever indicated materials, workmanship, arrangements or construction is of higher
quality or capacity than that required by the above codes, the drawings and/or
specifications shall govern.
3. Should there be any direct conflict between the state or local codes, laws or regulations
and the drawings and/or specifications, the state or local codes, laws, regulations shall
govern.
02054 TIGARD HIGH SCHOOL ADDITION / REMODEL — PHASE 1
FEB 04 TIGARD - TUALATIN SCHOOL DISTRICT 23J 02530 -2
Printed 02/04/04
SECTION 02530 -
SANITARY SEWER SYSTEM
B. Permits and Inspections -
1. Unless otherwise distinctly hereinafter specified, this contractor shall apply and pay for
all necessary permits, fees and inspections required by any Public Authority having
jurisdiction.
C. Drawings
1. The working drawings are generally diagrammatic. They do not show every offset,
bend or elbow required for installation in the space provided. They do not show every
dimension, component piece, section, joint or fitting required to complete the project.
All locations for work shall be checked and coordinated with existing conditions in the
field before beginning construction under this section or any other section. Contractor
is responsible for providing a complete operating system.
2. Existing underground utilities lying within the limits of excavation under this section
shall be verified as to condition, size and location by uncovering, providing such is
permitted by local public authorities with jurisdiction, before beginning construction
under this section or any other section.
1.8 DELIVERY, STORAGE AND HANDLING
A. Piping: Inspect materials delivered to site for damage: store with minimum of handling.
Store materials on site in enclosures or under protective coverings. Do not store materials
directly on the ground. Keep inside of pipes and fittings free of dirt and debris.
B. Precast Concrete: Handle precast sections with care to avoid chipping and breakage. Store as
directed. Protect precast concrete from contact with the soil and exposure to weather; keep dry
until used. Use of precast concrete containing frost will not be permitted.
C. Metal Items (Except Concrete Reinforcement): Check upon arrival; identify and segregate as
to types, functions, and sizes. Store in a manner affording easy accessibility and not causing
excessive rusting or coating with grease or other objectionable materials.
D. Handling: Handle pipe, fittings, and other accessories in such a manner as to ensure delivery
to the trench in sound undamaged condition. Take special care not to injure coating on pipe
and fittings; if damaged, make satisfactory repairs. Carry pipe to trench; do not drag it. When
rubber gaskets and plastic piping are not to be installed immediately, do not leave them
exposed to sunlight, but store under cover out of direct sunlight.
1.9 SCHEDULING AND SEQUENCING
A. Not used in this section.
PART 2 PRODUCTS
2.1 GENERAL
A. Materials for underground utilities to bid as specified below. If upon field identification,
existing utilities are of different material than specified below, notify Owner.
2.2 GRAVITY SANITARY SEWER PIPING
A. PVC Pipe: Use PVC pipe conforming to ASTM D3034, SDR 35, (4" to 15 ") or ASTM F679,
PS 46, (18" to 27 ").
02054 TIGARD HIGH SCHOOL ADDITION / REMODEL — PHASE 1
FEB 04 TIGARD- TUALATIN SCHOOL DISTRICT 23J 02530 -3
Printed 02/04/04
SECTION 02530
SANITARY SEWER SYSTEM
2.3 JOINTING MATERIALS
A. PVC Pipe: Use rubber gaskets for PVC pipe conforming to ASTM F477.
2.4 DRAINAGE STRUCTURES
A. Precast Concrete Manhole Sections: Precast concrete manhole risers, base sections, and tops
shall conform to ASTM C478. Gaskets for joints between sections shall conform to ASTM
C443. Resilient connectors for making joints between manhole and pipes entering manhole
shall conform to ASTM C 923.
2.5 METAL ITEMS
A. Standard Frames, Covings, and Gratings: Frames, covers, and gratings shall be of cast iron per
ASTM A 48. Frames, covers, and gratings shall be rated for ASSHTO H -20 traffic loading
shall be sized to fit a nominal 24" manhole opening, and shall have an "S" or "SEWER"
marking on top. Manhole covers shall be vented and watertight bolted down type with 4 -1/2
inch diameter x 1 -1/2 inch long bronze pentagonal head bolts. Provide a full circle rubber
gasket for installation between manhole frame and cover.
B. Manhole Steps: Shall conform to ASTM C478 and shall be of zinc coated or polypropylene
coated steel. Aluminum steps or rungs will not be permitted. Steps are not required in
manholes less than four feet deep.
PART 3 EXECUTION
3.1 TRENCHING
A. General: Perform all necessary excavation and backfill required for the installation of work.
Any piping or other work damaged by the Contractor's operations shall be repaired at
Contractor's expense.
B. Water: Keep all excavations free of standing water. Excavations damaged or softened by
water or frost shall be re- excavated and filled back to original level with material by the
Contractor at his own expense.
C. Trench Excavation: Excavate site trenches to the necessary depth and width, removing rocks,
unstable soil (muck, peat, etc.), roots and stumps. Cost of additional excavation to facilitate
utility crossovers, additional offsets, extra bedding connections to existing utilities,
connections to plumbing fixtures, etc., shall be borne by the Contractor. Excavation material
is unclassified. Width of trench shall be adequate for proper installation of piping or conduit.
D. Increase depth as required to avoid other utilities. Encase piping in areas where depth of cover
over pipe is less than vendor's recommended minimum depth or as required to conform to
governmental requirements for crossings.
E. Obtain owner's approval prior to installing such piping and encasement.
3.2 GENERAL
A. Install all piping and appurtenances in accordance with vendor's recommendation.
B. Normally begin pipe laying at the downstream of the pipeline. The lower segment of the pipe
should be in contact with the shaped bedding throughout its full length. Bell or groove ends of
rigid pipe and outside circumferential laps of flexible pipe should be placed facing upstream.
02054 TIGARD HIGH SCHOOL ADDITION / REMODEL — PHASE 1
FEB 04 TIGARD - TUALATIN SCHOOL DISTRICT 23J 02530 -4
Printed 02/04/04 •
SECTION 02530
SANITARY SEWER SYSTEM
C. All field joints made in joining of sections of pipe to form culverts and sewers, and to connect
to structures in special sections to be closely fitted, tight, providing a smooth and uniform
interior surface.
D. Inspect all pipe prior to placement in the trench and if necessary clean any material tending to
plug pipe.
E. Provide proper tools, labor, and equipment for efficient execution of the work. All pipe and
fittings to be carefully lowered into the trench to avoid contamination.
F. The work covered by this section shall terminate at a point approximately five feet from the
building unless otherwise indicated on the drawings.
G. Connections to Existing Lines: Make connections to existing lines in an approved manner.
Conduct work so that there is minimum interruption of service on existing line.
3.3 SPECIAL REQUIREMENTS
A. PVC Plastic Piping: Install pipe and fittings in accordance with the general requirements for
installation of pipelines and with the requirements of UNI -B -5 for laying and joining pipe and
fittings. Make joints with the gaskets previously specified joints with this piping; assemble
these joints in accordance with the requirements of UNI -B -5 for assemble of joints. Make
joints to other pipe materials in accordance with the recommendations of the plastic pipe
manufacturer.
B. Clean -Outs: Construct clean outs of cast -iron soil pipe and fittings.
3.4 MANHOLES
A. Forming of Gravity Manhole Base and Invert: Form the invert to a half circle before initial set
of the concrete with a smooth transition from inlet to outlet. Apply final grout coat to the
manhole base with a sack finish. Apply Portland Cement grout to the joint between the sewer
pipe and the manhole wall inside and out to insure a watertight seal.
B. Place the first manhole riser section before the concrete base has taken its initial set. Bed the
ring into the concrete. Apply Portland Cement grout inside and out to insure a watertight seal.
C. Place the manhole riser and cone sections together using full bed of Portland Joint compound
or rubber gasket to insure a watertight joint.
D. When using rubber gasket material, prime both ends of manhole cone and risers. Apply
primer to clean and dry concrete. Install rubber gasket in accordance with manufacturer's
recommendations.
E. Use flat slab top for manholes 5 feet or less in height, and eccentric cone section for manholes
over 5 feet in height. Height, measured from centerline invert to rim elevation, will be used to
determine manhole top configuration.
3.5 TRACER WIRE
A. Install tracer wire in all trenches for sanitary sewers. Place the tracer wire directly over the
pipe centerline and on top of the pipe zone material. Splice a branch tracer wire at each
manhole and extend a single wire up the outside of the manhole. Drill a 10 mm (3/8 inch)
diameter hole through the manhole wall within 0.5 m (18 inches) of the finish grade of the
manhole rim. Extend the wire through the hole with a 1 m (3 foot) minimum length of coiled
wire inside the manhole. Seal the opening in the manhole wall with silicone sealant. Place a
branch tracer wire over each pipe connected to the main sewer.
02054 TIGARD HIGH SCHOOL ADDITION / REMODEL — PHASE 1
FEB 04 TIGARD - TUALATIN SCHOOL DISTRICT 23J 02530 -5
Printed 02/04/04
•
SECTION 02530
SANITARY SEWER SYSTEM
B. Make tracer wire splices using a high- pressure compression type soderless connector to
securely join the wires both mechanically and electrically. Insulate splices to be moisture and
waterproof. Splices wrapped with tape will not be accepted as waterproof. Have all splice kits
approved prior to installation.
C. Test all tracer wire with locating equipment prior to acceptance.
3.6 HYDROSTATIC TESTING (GRAVITY LINES)
A. Notify Owner, local Plumbing Inspector, and Public Works Inspector two days before tests.
B. Pipe and joints shall sustain losses not exceeding 0.04 gallons per hour per inch diameter per
100 feet when field tested by exfiltration methods, except 0.3 gallons per hour may be used in
arid climate zones if approved by the engineer.
C. The hydrostatic head for test purposes shall exceed the maximum estimated ground water level
in the section being tested by at least 72 inches and in no case shall be less than 72 inches
above the inside top of the highest section of pipe in the test section, including service
connections. The engineer shall make the final decisions regarding test height for the water in
the pipe section being tested. The length of pipe tested by exfiltration shall be limited so that
the pressure on the invert of the lower end of the section shall not exceed 28 feet of water
column.
D. The pipe test section may be filled 24 hours prior to time of exfiltration testing, if desired, to
permit normal absorption into the pipe walls to take place.
E. All service connection footage shall be taken into account in computing allowable leakage.
3.7 HYDROSTATIC TESTING (MANHOLES)
A. The contractor shall be responsible for process control testing of sanitary manholes and may
conduct such tests as necessary during the construction process. The tests required in this
subsection are for the information of the engineer. The results of the tests will not indemnify
the contractor of responsibility for defects in the construction.
B. All sanitary sewer manholes shall be tested for acceptance by hydrostatic testing after
completion of backfilling, compaction and surface restoration, including paving. If the
manhole fails the test, necessary repairs shall be made by an approved method, and the
manhole retested. The manhole shall be repaired and retested until a satisfactory test is
obtained.
C. The hydrostatic test shall consist of plugging all inlets and outlets and filling the manhole with
water. Each manhole shall be filled to the rim at the start of the test. Leakage in each manhole
shall not exceed 0.2 gallons per hour per foot of head above the invert. Leakage shall be
determined by refilling to the rim using a calibrated known - volume container. Manholes may
be filled 24 hours prior to the time of testing to permit normal absorption into the manhole
walls.
3.8 REPAIRS
A. The contractor shall locate and repair any sections failing to pass the required tests and
inspections and shall then repeat the specified tests and inspections on those sections at no
expense to the owner.
02054 TIGARD HIGH SCHOOL ADDITION / REMODEL — PHASE 1
FEB 04 TIGARD - TUALATIN SCHOOL DISTRICT 23J 02530 -6
Pruned 02/04/04
SECTION 02530
SANITARY SEWER SYSTEM
B. Following a successful hydrostatic or air test, visible infiltration of groundwater in any section
shall be considered evidence that the original test was in error or that failure of the section has
occurred. The contractor shall correct such failures, and retest the repaired sections, at no
expense to the owner.
END OF SECTION
02054 TIGARD HIGH SCHOOL ADDITION / REMODEL — PHASE 1
FEB 04 TIGARD - TUALATIN SCHOOL DISTRICT 23J 02530 -7
Printed 02/04/04
SECTION 02630 -
STORM DRAINAGE SYSTEM
PART 1 GENERAL
1.1 GENERAL REQUIREMENTS
A. Drawings and general provisions of the Contract, including General and other Conditions and ..
Division 1 — General Requirements sections, apply to the work specified in this section.
1.2 WORK INCLUDED
A. System shall include storm drainage lines and branches, catch basins, trench drains, and
connection to existing downspouts and drainage lines. Provide and relocate drainage lines and
structures as noted:
1. Storm drainage piping.
2. Precast concrete manholes.
3. Standard catch basins.
4. Culverts.
5. Clean -outs.
•
6. Connections to existing system
1.3 RELATED WORK
A. Section 02315 — Earthwork
B. Section 02316 - Trenching, Backfilling, and Compaction
1.4 REFERENCES
A. The publications listed below form a part of this specification to the extent referenced. The
publications are referred to in the text by the basic designation only.
B. American Society for Testing and Materials (ASTM) Publications
1. ASTM C 478 Precast Reinforced Concrete Manhole Sections
2. ASTM C 923 Standard Specification for Resilient Connectors Between Reinforced
Concrete Manhole Structures
3. ASTM D 3034 Type PSM Poly (Vinyl Chloride) (PVC) Sewer Pipe and Fittings
4. ASTM D 3212 Joints for Drain and Sewer Plastic Pipes Using Flexible Elastomeric
Seals
5. ASTM F 477 Elastomeric Seals (Gaskets) for Joining Plastic Pipe
C. Uni -Bell Plastic Pipe Association (UNI) Publication
1. Installation of Polyvinyl Chloride (PVC) Sewer Pipe
02054 TIGARD HIGH SCHOOL ADDITION / REMODEL — PHASE 1
FEB 04 TIGARD- TUALATIN SCHOOL DISTRICT 23J 02630 -1
Printed 02/10/04
SECTION 02630
STORM DRAINAGE SYSTEM
1.5 DEFINITIONS
A. Not used in this section.
1.6 SUBMITTALS
A. Manufacturer's Data: Submit manufacturer's standard drawings or catalog cuts of the following
items:
1. Fittings
2. Joints and couplings
3. Precast drainage structures and manholes
4. Pipe
5. Catch basins
B. Manufacturer's Certificates of Conformance: Submit manufacturer's certificates of conformance
or compliance for each of the following materials which are specified to conform to publications
referenced under paragraph, "Materials," in this section:
1. Pipe and fittings, including factory- applied linings
2. Pipe joint materials
3. Cast -iron or welded steel frames, covers, and gratings
4. Manholes and pipe penetration seals
C. All tests performed by each applicable referenced publication shall have been performed,
whether specified in that publication to be mandatory or otherwise. For tests which are not
specified in the referenced publications to be performed at definite intervals during
manufacture, the tests shall have been performed within three years of the date of submittal of
certificates on the same type, class, grade, and size of material as is being provided for the
project. -
D. Field/Installation Testing: Submit test results for each of the following installation tests:
1. Hydrostatic testing of gravity lines.
2. Deflection testing for flexible pipe.
E. Maintenance Training: Stormwater Management, Inc., shall provide a training session to
Templeton Elementary School maintenance staff regarding proper procedures for care and
maintenance of storm filter catch basins.
1.7 QUALITY ASSURANCE
A. Codes and Regulations
1. All work and materials shall conform to City of Tigard requirements.
02054 TIGARD HIGH SCHOOL ADDITION / REMODEL — PHASE 1
FEB 04 TIGARD- TUALATIN SCHOOL DISTRICT 23J 02630 -2
Printed 02n0 /04
SECTION 02630
STORM DRAINAGE SYSTEM
2. Whenever indicated materials, workmanship, arrangements or construction is of higher
quality or capacity than that required by the above codes, the drawings and/or
specifications shall govern.
3. Should there be any direct conflict between the state or local codes, laws or regulations
and the drawings and/or specifications, the state or local codes, laws or regulations shall
govern.
B. Permits and Inspections
1. Unless otherwise distinctly hereinafter specified, this contractor shall apply and pay for
all necessary permits, fees and inspections required by any public authority having
jurisdiction.
C. Drawings
1. The working drawings are generally diagrammatic. They do not show every offset, bend
or elbow required for installation in the space provided. They do not show every
dimension, component piece, section, joint or fitting required to complete the project.
All locations for work shall be checked and coordinated with existing conditions in the
field before beginning construction under this section or any other section. Contractor is
responsible for providing a complete operating system.
2. Existing underground utilities lying within the limits of excavation under this section
shall be verified as to condition, size and location by uncovering, providing such is
permitted by local public authorities with jurisdiction, before beginning construction
under this section or any other section.
1.8 DELIVERY, STORAGE AND HANDLING
A. Piping: Inspect materials delivered to site for damage: store with minimum of handling. Store
materials on site in enclosures or under protective coverings. Do not store materials directly on
the ground. Keep inside of pipes and fittings free of dirt and debris.
B. Precast Concrete: Handle precast sections with care to avoid chipping and breakage; store as
directed. Protect precast concrete from contact with the soil and exposure to weather; keep dry
until used. Use of precast concrete containing frost will not be permitted.
C. Metal Items (Except Concrete Reinforcement):. Check upon arrival; identify and segregate as to
types, functions, and sizes. Store in a manner affording easy accessibility and not causing
excessive rusting or coating with grease or other objectionable materials.
D. Handling: Handle pipe, fittings, and other accessories in such a manner as to ensure delivery to
the trench in sound undamaged condition. Take special care not to injure coating on pipe and
fittings; if damaged, make satisfactory repairs. Carry pipe to trench; do not drag it. When
rubber gaskets and plastic piping are not to be installed immediately, do not leave them exposed
to sunlight, but store under cover out of direct sunlight.
1.9 SCHEDULING AND SEQUENCING
A. Not used in this section.
02054 TIGARD HIGH SCHOOL ADDITION / REMODEL — PHASE 1
FEB 04 TIGARD - TUALATIN SCHOOL DISTRICT 23J 02630 -3
Primed 02/10/04
SECTION 02630
STORM DRAINAGE SYSTEM
PART 2 PRODUCTS
2.1 GENERAL
A. Materials for underground utilities to bid as specified below. If upon field identification,
existing utilities are of different material than specified below, notify owner.
2.2 PIPING
A. PVC Pipe: Use PVC pipe conforming to ASTM D3034, SDR 35, (4" to 15 ") or ASTM F679,
PS 46, (18" to 27 ").
2.3 JOINTING MATERIALS
A. Use only lubricants for jointing materials approved by the manufacturer.
B. PVC Pipe: Use rubber gaskets for PVC pipe conforming to ASTM F477.
2.4 DRAINAGE STRUCTURES
A. Precast Concrete Manhole Sections: Precast concrete manhole risers, base sections, and tops
shall conform to ASTM C478. Gaskets for joints between sections shall conform to ASTM
C443. Resilient connectors for making joints between manhole and pipes entering manhole
shall conform to ASTM C923.
2.5 METAL ITEMS
A. Standard Frames, Covings, and Gratings: Frames, covers, and gratings shall be of cast iron per
ASTM A 48. Frames, covers, and gratings shall be rated for AASHTO H -20 traffic loading.
B. Manhole Steps: Shall conform to ASTM C478 and shall be of zinc coated or polypropylene
coated steel. Aluminum steps or rungs will not be permitted. Steps are not required in
manholes, curb inlets, or catch basins less than four feet deep.
C. Metal Catch Basins: Shall be 10 gauge steel catch basins specified for AASHTO H -20 highway
loading. Interior coated with asphalt coating. Manufactured by Lynch Company or approved
equal.
PART 3 EXECUTION
3.1 TRENCHING
A. General: Perform all necessary,excavation and backfill required for the installation of work.
Any piping or other work damaged by the contractor's operations shall be repaired at
contractor's expense.
B. Water: Keep all excavations free of standing water. Excavations damaged or softened by water
or frost shall be re- excavated and filled back to original level with material by the contractor at •
his own expense.
C. Trench Excavation: Excavate site trenches to the necessary depth and width, removing rocks,
unstable soil (muck, peat, etc.), roots and stumps. Cost of additional excavation to facilitate
utility crossovers, additional offsets, extra bedding connections to existing utilities, connections
to plumbing fixtures, etc., shall be borne by the contractor. Excavation material is unclassified.
Width of trench shall be adequate for proper installation of piping or conduit.
02054 TIGARD HIGH SCHOOL ADDITION / REMODEL — PHASE 1
FEB 04 TIGARD - TUALATIN SCHOOL DISTRICT 23J 02630 -4
Printed 02/10/04
SECTION 02630
STORM DRAINAGE SYSTEM
D. Increase depth as required to avoid other utilities. Encase piping in areas where depth of cover
over pipe is less than vendor's recommended minimum depth or as required to conform to
governmental requirements for crossings.
E. Obtain owner's approval prior to installing such piping and encasement.
3.2 GENERAL
A. Install all piping and appurtenances in accordance with vendor's recommendation.
B. Normally begin pipe laying at the downstream of the pipe line. The lower segment of the pipe
should be in contact with the shaped bedding throughout its full length. Bell or groove ends of
rigid pipe and outside circumferential laps of flexible pipe should be placed facing upstream
C. All field joints made in joining of sections of pipe to form culverts and sewers, and to connect to
structures in special sections to be closely fitted, tight, providing a smooth and uniform interior
surface.
D. Inspect all pipe prior to placement in the trench and if necessary clean any material tending to
plug pipe.
E. Provide proper tools, labor, and equipment for efficient execution of the work. All pipe and
fittings to be carefully lowered into the trench to avoid contamination.
F. The work covered by this section shall terminate at a point approximately 5 feet from the
building unless otherwise indicated on the drawings.
G. Connections to Existing Lines: Make connections to existing lines in an approved manner.
Conduct work so that there is minimum interruption of service on existing line.
3.3 SPECIAL REQUIREMENTS
A. PVC Plastic Piping: Install pipe and fittings in accordance with the general requirements for
installation of pipelines and with the requirements of ASTM D2321 for laying and joining pipe
and fittings. Make joints with the gaskets previously specified. joints with this piping; assemble
these joints in accordance with the requirements of ASTM D2321 for assemble of joints. Make
joints to other pipe materials in accordance with the recommendations of the plastic pipe
manufacturer.
3.4 MANHOLES
A. Forming of Gravity Manhole Base and Invert. Form the invert t a half circle before initial set
of the concrete with a smooth transition from inlet to out. Apply final grout coat to the manhole
base with a sack fuush. Apply Portland Cement grout to the joint between the sewer pipe and
the manhole wall inside and out to insure a watertight seal.
B. Place the first manhole riser section before the concrete base has taken its initial set. Bed the
ring into the concrete. Apply Portland Cement grout inside and out to insure a watertight seal.
C. Place the manhole riser and cone sections together using full bed of Portland Joint compound or
rubber gasket to insure a watertight joint.
D. When using rubber gasket material, prime both ends of manhole cone and risers. Apply primer
to clean and dry concrete. Install rubber gasket in accordance with manufacturer's
recommendations.
02054 TIGARD HIGH SCHOOL ADDITION / REMODEL — PHASE 1
FEB 04 TIGARD - TUALATIN SCHOOL DISTRICT 23J 02630 -5
Primed 02/10/04 •
SECTION 02630 -
STORM DRAINAGE SYSTEM
E. Use flat slab top for manholes 5 feet or less in height, and eccentric cone section for manholes
over 5 feet in height. Height, measured from centerline invert to rim elevation, will be used.
3.5 TRACER WIRE
A. Install tracer wire in all trenches for sanitary sewers. Place the tracer wire directly over the pipe
centerline and on top of the pipe zone material. Splice a branch tracer wire at each manhole and
extend a single wire up the outside of the manhole. Drill a 10 mm (3/8 inch) diameter hole
through the manhole wall within 0.5 m (18 inches) of the finish grade of the manhole rim.
Extend the wire through the hole with a 1 m (3 foot) minimum length of coiled wire inside the
manhole. Seal the opening in the manhole wall with silicone sealant. Place a branch tracer wire
over each pipe connected to the main sewer. Make tracer wire splices using a high- pressure
compression type solderless connector to securely join the wires both mechanically and
electrically. Insulate splices to be moisture and waterproof. Splices wrapped with tape will not
be accepted as waterproof. Have all splice kits approved prior to installation. Test all tracer
wire with locating equipment prior to acceptance.
3.6 HYDROSTATIC TESTING (GRAVITY LINES)
A. Notify Owner, local Plumbing Inspector, and Public Works Inspector two days before tests.
B. Pipe and joints shall sustain losses not exceeding 0.04 gallons per hour per inch diameter per
100 feet when field tested by exfiltration methods, except 0.3 gallons per hour may be used in
arid climate zones if approved by the engineer.
C. The hydrostatic head for test purposes shall exceed the maximum estimated ground water level
in the section being tested by at least. 72 inches and in no case shall be less than 72 inches above
the inside top of the highest section of pipe in the test section, including service connections.
The engineer shall make the final decisions regarding test height for the water in the pipe section
being tested. The length of pipe tested by exfiltration shall be limited so that the pressure on the
invert of the lower end of the section shall not exceed 28 feet of water column.
D. The pipe test section may be filled 24 hours prior to time of exfiltration testing, if desired, to
permit normal absorption into the pipe walls to take place.
E. All service connection footage shall be taken into account in computing allowable leakage.
3.7 DEFLECTION TESTING FOR FLEXIBLE PIPE
A. Make a deflection test on entire length of installed plastic pipeline on completion of all work
adjacent to and over the pipeline, including tests, backfilling, placement of fill, grading, paving,
concreting, and any other superimposed loads. Deflection of pipe in the installed pipeline under
all external loads shall not exceed 4.5 percent of the normal inside diameter of pipe. Determine
whether the allowable deflection has been exceeded by use of a pull - through device, or a
deflection measuring device.
B. Measure deflections through each run of installed pipe. If deflection readings in excess of 4.5
percent of normal inside diameter of pipe are obtained, retest pipe. If retest continues to show a
deflection in excess of 4.5 percent of normal diameter of pipe, replace pipe that has excessive
deflection and completely retest in same manner and under same conditions as previously
specified.
3.8 REPAIRS
A. The contractor shall locate and repair any sections failing to pass the required tests and
02054 TIGARD HIGH SCHOOL ADDITION / REMODEL — PHASE 1
FEB 04 TIGARD - TUALATIN SCHOOL DISTRICT 23J 02630 -6
Printed 02/10/04
SECTION 02630
STORM DRAINAGE SYSTEM
- inspections and shall then repeat the specified tests and inspections on those sections at no
expense to the owner.
B. Following a successful hydrostatic or air test, visible infiltration of groundwater in any section
shall be considered evidence that the original test was in error or that failure of the section has
occurred. The contractor shall correct such failures, and retest the repaired sections, at no
expense to the owner.
END OF SECTION
020$4 TIGARD HIGH SCHOOL ADDITION / REMODEL — PHASE 1
FEB 04 TIGARD - TUALATIN SCHOOL DISTRICT 23J 02630 -7
Primed 02)10 /04