Report (6) f g1-20/ -60346
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City of Tigard
TIGARD
October 16, 2019
RE: Two Story Addition and Detached Garage
Project Information
Building Permit: MST2019-00396 Construction Type:VB
Address: 14425 SW McFarland Blvd Occupancy Types: R3
Area: Shadow Hills Stories: 2
The plan review was performed under the Oregon Structural Specialty Code (ORSC) 2017 edition.
The submitted plans have been reviewed and the following information is required prior to issuance
of the permit.
Per R301.2.2.2.5 Irregular buildings. Irregular portions of the structure shall be designed in
accordance with the accepted engineering practice. See grid line 2.;��-sem ,f
You can use angled wall. L aA.4,-�\ 6.4 yS%`S T
v.,------2--. Per ORSC Chapter 11 Energy Efficiency flat ceilings require R49 Insulation. How do you
plan to meet the R49 requirement in a 2X10 rafters? ORSC N1101.1(1).
/� We are using high density' batt insulation to reach the R-49 req.
v/..--- -
37. Please select additional measures Per 1101.3.1 and Table N1101.2.
See attached table
1/-----4-. How do you intend to heat the new dwelling area?
With the existing furnace
Provide guard rail info or manufacturer cut sheet if using an aftermarket product.
See attached
Provide spec sheet for GACO Dek.
See attached
OFFICE COPY
Gaco Western
SINCE 1 9 5 5
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Application Specification: LWM-UB64C
August 2014
Supersedes 04109
DIVISION 07 14 16:
GACOFLEX UB-64C MEMBRANE FOR USE
ON PLYWOOD OR CONCRETE DECKS
PART 1 -GENERAL
1.1 SUMMARY
A. GacoFlex UB-64-C Series Elastomeric Coatings provide a waterproofing membrane suitable to be overlaid with
poured in place concrete, pavers or similar topping.These products are Zero VOC and compliant worldwide. This
section includes membrane installation and protection board/drainage mat.
B. This specification is prepared in brief form so it can be used verbatim in the waterproofing section. It is necessary
only to make the selections indicated to complete it. Gaco Western's General Instructions, which are incorporated by
reference, provide specific detailed instructions for the guidance of contractors and inspectors.
1.2 RELATED SECTIONS
A. Drains, vents and penetrations: Division 07 72 00
B. Rough Carpentry: Division 06 10 53
C. Cast-In-Place Concrete: Division 03 33 00
1.3 SUBMITTALS
A. Product Data: Submit manufacturer's standard submittal package including specification, installation instructions and
general information for each waterproofing material.
B.Applicator Qualifications: Submit current"Qualified Applicator"Certificate from the specified waterproofing
manufacturer.
1.4 QUALIFICATIONS
A. Primary waterproofing materials shall be products of a single manufacturer. Secondary materials shall be
recommended by the primary manufacturer. Manufacturer shall have a minimum of 10 years experience in the
manufacture of materials of this type.
B.Applicators shall have a minimum of 5 years experience in the application of waterproofing materials of the type
specified. Applicator shall posses a current"Qualified Applicator" Certificate from the specified waterproofing
manufacturer.
C. Pre-Bid Conference: 10 working days prior to the bid opening there is to be a mandatory Pre-Bid Conference.
Anyone not attending the Pre-Bid Conference will not be allowed to bid the project. All products considered an equal
to the specified product or any changes in the scope of work installation or specifications must be presented at the
Pre-Bid Conference. If a change in the specifications is accepted, it will be considered as an alternate and will be
presented as a bid amendment issued 5 working days prior to the bid opening. No other changes to the specification
or bid documents will be accepted.
Made in the USA • gaco.com • 800.331.0196
LWM-UB-64
• Page 2
D. Pre-Installation Conference: Just prior to the commencement of the fluid application waterproofing system, meet at
the site with a representative of the coating manufacturer, the waterproofing contractor, the general contractor, the
architect and other parties affected by this section. Review methods and procedures, substrate conditions,
scheduling and safety.
1.5 DELIVERY, STORAGE AND HANDLING
A. Store all coating materials in the original unopened containers at 50°-80°F (10°-26°C)until ready for use.
B. Follow the special handling or storage requirements of the manufacturer for cold weather, hot weather, etc.
C. Safety: Refer to all applicable data, including, but not limited to MSDS Sheets, PDS Sheets, product labels, specific
instructions for specific personal protection requirements.
D. Ventilation: Provide adequate ventilation to prevent the accumulation of hazardous fumes during the application.
E. Environmental Requirements: Proceed with the work of this section only when the existing and forecasted weather
conditions will permit the application to be performed in accordance with the manufacturer's recommendations.
1.6 WARRANTY
A. The contractor shall guarantee that all work performed will be free from defects in workmanship for a period of 5
(five)years.
B. Manufacturer shall provide a 10 (Ten) year material warranty providing for coverage against premature material
decomposition, adhesive failure, cohesive failure, and that the material will perform as published.
PART 2 -PRODUCTS
2.1 MANUFACTURERS
Acceptable Manufacturers:
Gaco Western, LLC www.gaco.com
2.2 MATERIALS
A. Polyurethane Membrane Coating: GacoFlex UB-64C Series two-component Polyurethane Coating.
B. Sealer: GacoFlex U-5677 Polyurethane Concrete Sealer.
C. Primer: GacoFlex E-5320 two component Epoxy Concrete Primer.
D. Joint Reinforcing Fabric: Gaco Western 66-B and 66-S Fabric Tape.
E. Flashing: GacoFlex NF-621 Neoprene Sheet Flashing and related materials as required for flashing drains, base
angles, etc.
PART 3 -EXECUTION
3.1 EXAMINATION
A. Acceptable Plywood Grades: The plywood shall conform to U.S. Product Standard PS 1-95 and shall carry the
grade trademark of The Engineered Wood Association-APA EXT or APA AC EXT are acceptable. Underlayment
grade plywood (APA AC EXT Underlayment)with solid, plugged cross bands under the face veneer is recommended
for commercial installations.
Made in the USA • gaco.com • 800.331.0196
LWM-UB-64
Page 3
Unacceptable Grades:APA C-D EXT, APA C-C EXT, Exposure 1 markings, oriented strand board (OSB),
waferboard and Lauan or Mahogany plywood are NOT suitable substrates for liquid-applied coating systems.This is
due to poor dimensional stability, weak glue lines which allow buckling or lifting of the top ply, and excessive
splintered, leafed and raised surface grain.
Refer to Gaco Western's General Instruction GW-2-3 for complete information on the installation and fastening of
plywood.
B. Do not begin the work until the concrete substrate has cured 28 days and/or has achieved a moisture content of no
greater than 6.8%.
C. Prior to application of waterproofing perform calcium chloride test, to verify a moisture content of 6.8% or less has
been established.
D. Verify that the concrete meets the requirements of the coating manufacturer. Refer to Gaco Western's General
Instruction GW-2-1 for complete information on the installation and finishing of concrete.
E.Verify with architect, general contractor and manufacture that substrate conditions are acceptable to
receive waterproofing application.
3.2 PREPARATION
A. Clean the substrate to remove any and all surface contaminants. Refer to Gaco Western's General Instructions GW-
1-1, Surface Preparation.
B. Mask off all adjoining areas that are not to receive the fluid applied waterproofing.
C. Provide a suitable work station to mix the coating materials.
3.3 INSTALLATION
A. Technical Advice: The installation of this waterproofing membrane shall be accomplished in the presence of or
with the advice of the manufacturer's technical representative. Contact the nearest regional office for assistance.
B. Concrete Sealer: Seal the entire deck surface and all vertical or sloping surfaces of curbs, cants, parapets, etc.,
which are to receive coatings with one coat GacoFlex U-5677 Sealer at a rate of one gallon per 400 square feet
(3.78 L/9.3 m2). Allow to dry 4 hours minimum but no more than 8 hours maximum prior to applying primer coat.
Alternative Concrete Sealer. For areas vulnerable to a high vapor drive seal with GacoFlex E-5990 100%
Solids Two-Component Epoxy Sealer. Use a squeegee to uniformly apply product over coverage area at a
rate of one gallon per 150 square feet for CSP 3 190 square feet for CSP 2. Any excess product should be
back rolled over entire area to ensure even application. Do not apply product if substrate is below 50°F or
above 110°F.
Note: Wood substrates do not require sealing or priming.
C. Concrete Primer: Apply one coat of GacoFlex E-5320 Primer by roller at the rate of 1 gallon per 250 square feet
(1.89 L/9.3 m2).Allow it to dry for 12 to 24 hours.
D. Alternative Concrete Primer/Sealer. Apply one coat of GacoFlex E-5511 Primer to all surfaces to receive the fluid
applied waterproofing, except areas previously caulked, flashed or fabric reinforced. Apply at a rate of one gallon
per 150 sq.ft. (3.78 L/ 13.9 m2)and allow it to cure for at least 6 hours, but no more than 48 hours before
applying the basecoat.
E. Polyurethane Coating: Apply two coats of GacoFlex UB-64C Series Polyurethane at a rate of 1.75 gallons per 100
sq.ft. (6.06 L/9.3 m ) (30 wet film mils each coat, 21 dry mils each coat)Yielding a total dry film thickness of 42
mils to all areas to receive fluid applied waterproofing, including areas previously caulked, flashed or fabric
reinforced. Allow the base coat to cure for at least 2 hours,
Made in the USA • gaco.com • 800.331.0196
SWM-UB-64
. Page 4
F. Finish Coat Polyurethane Coating: Apply one coat of GacoFlex UB-64C Series Polyurethane Coating at a rate of
1.5 gallons per 100 sq. ft. (24 mils wet) Dry film thickness of 18 mils to all areas to receive the fluid applied
waterproofing, including areas previously caulked, flashed or fabric reinforced.
Note: Allow each coat to dry until tack free and dry enough for foot traffic without damage before applying
additional coats. Several hours to overnight will be required, depending on the drying conditions. In periods of
extreme high temperatures or in direct sunlight, use caution as dark colors absorb heat quickly and may cause
coating to blister or exhibit other film defects.
Note: If the entire job cannot be completed without interruption, the interruption should occur after the first base
coat has been applied. This will provide protection for the tape system and general areas. It is best to schedule
the installation to avoid interruptions. If they occur, cleaning is essential to assure adhesion.Application of
interlaminar sealer GacoFlex U-5677 is required after a period of 7 days.
I. Water Test: Prior to being covered with overburden, perform a water test after 48 hour. Cover all horizontal
surfaces with water to a depth of 2" and allow it to stand for a minimum of 24 hours. If leaks are detected, repair
and re-test as necessary. Obtain a sign off from the Owner or General Contractor as to watertight integrity after
the water test.
3.4 PROTECTION
A. Drainage Mat: If a drainage mat is to be used, Install on the cured membrane (post water test) a layer of
composite drainage system consisting of a three-dimensional, crush-proof drainage core and a non-woven
needle punched filter fabric.This composite is tested to meet or exceed the following properties:
PROPERTY TEST METHOD VALUE
CORE
Compressive Strength ASTM D-1621 30,000 psf.
Thickness ASTM D-1777 .25 in.
FABRIC
Flow ASTM D-4491 205 gpm/ft2
Mullen Burst ASTM D-3786 285 psi.
Puncture ASTM D-4833 80 lbs.
Apparent Opening Size CW-02215 70-100
Grab Tensile ASTM D-4632 120 lbs.
3.5 FIELD QUALITY CONTROL
A. The contractor for work under this section shall maintain a quality control program specifically to verify compliance
with this specification. A daily log shall be kept to record actions in the field.
B. Thickness: Minimum over all dry film thickness of the completed fluid applied waterproofing system will average 60
mils.
Made in the USA • gaco.com • 800.331.0196
TABLE N110L1(2) ADDITIONAL
MEASURES(SELECT ONE)
HIGH EFFICIENCY WALLS
I Exterior walls -- U-0.045/R-21 cavity insulation
+R-5 continuous
UPGRADED FEATURES
2 Exterior walls -- U-0.057/R-23 intermediate or
W Framed floors -- U-0.026/R-38,and
2_ Windows -- U-028(average UA)
UPGRADED FEATURES
Z Exterior walls -- U-0.0155/R-23 intermediate or
W 3 R-21 advanced,
Flat ceiling -- U-0.017/R-60, and
_ Framed floors -- U-0.02b /R-38
ZSUPER INSULATED WINDOWS AND ATTiC
'Q lJ OR FRAMED FLOORS
= W 4 Windows -- U-022 (Triple Pane Low-e),and
W j Flat ceilinge -- U-0.017/R-60 or
Framed floors -- U-0026/R-38
aAlR SEALING HOME AND DUCTS
Mandatory air sealing of all wall coverings at
top plate and air sealing checklist'and
W Mechanical whole-building ventilation system
with rates meeting Mi503 or ASO-RAE 622,and
Z All ducts and air handlers contained within
building envelope'or
All ducts sealed with mastic'
HIGH EFFICIENCY THERMAL ENVELOPE UA°
Proposed UA is 8% lower than the code UA
HIGH EFFICIENCY HVAC SYSTEM:`
Gas-fired furnace or boiler AFUE 94%, or
A Air source heat pump HSPF 95/15.0 SEER
cooling, or
Ground source heat pump COP 3.5 or Energy
Star rated
DUCTED HVAC SYSTEMS WITHIN CONPITIQNED
SPACE:
B All ducts and air handlers contained within
building envelope
Cannot be combined with Measure 5
DUCTLESS HEAT PUMP
C Ductless heat pump HSPF 100 in primary zone
of dwelling
H1Gl-1 EFFICIENCY WATER HEATER`
Natural gas/propane water heater with
LIEF 0135 OR
Electric heat pump water heater Tier I Northern
Climate Specification Product
For 51: I square foot = 0093 m2, I watt per square foot
10.8 W/m2.
A. Appliances located within the building thermal
envelope shall have sealed combustion air installed.
Combustion air shall be ducted directly from the
outdoors.
8. All duct joints and seams sealed with listed mastics
tape is only allowed at appliance or equipment
connections (for service and replacement).Meet sealing
criteria of Performance Tested Comfort Systems
program administered by the Bonneville Power
Administration (EPA).
C. residential water heaters less than 55 gallon storage
volume.
D.A total of 5 percent of an HVAC systemts ductwork
shall be permitted to be located outside of the
conditioned space. Ducts located outside the
conditioned space shall have Insulation installed as
required in this code.
E. The maximum vaulted ceiling surface area shall not be
greater than 50 percent of the total heated space
floor area unless vaulted area has a U-factor no
greater than U-0.026.
F. Continuous air barrier. Additional requirement for
sealing of all interior vertical wall covering to top
plate framing. Sealing with foam gasket, caulk or other
approved sealant listed for sealing wall covering
material to structural material (example: gypsum board
to wood stud framing).
G. Table NiiO4.1(i)Standard base case design, Code UA
shall be at least 6 percent less than the Proposed UA.
Buildings with fenestration less than IS percent of the
total vertical wall area may adjust the Code UA to
have /5 percent of the wall area as fenestration.
--
P.T. (OR EQUAL) 2 X 6
TOP RAIL
P.T. (OR EQUAL) 2 X 4
P.T. 2 X DECK JSTS. ti RAIL w/ FENC CLIPS
SEE PLAN FOR _ ~ ROUND METAL
SIZE SPACING ;4 PICKETS SPACED TO
(MIN 2 X 10)
PREVENT A 4" SPHERE
COMPOSITE DECKING FROM PASSING TI-IROUGI-I
P.T. (OR EQUAL) 2 X 4
I 1 I I I I I I , RAIL w/ FENG CLIPS
i
I r NNNN
SIMPSON DDT2.
Tl''P OF (2) P.T. (OR EQUAL) 4 X 4
POST 81 48" O.G. (MAX)
P.T. DECK POST IV/
CC/CS - SEE PLANS P.7. DECK SEAM
FOR SIZE 4 SPACING SEE PLANS FOR SIZE
310' " I-41G1DECK RA IL INCA
f
CONNECTION DETAIL
SCALE: 1/2" = 11-0"
+.36"
1i