Specifications Form 4a Project Name: CASCADE COMPUTERS Page: 1
SYSTEMS - GENERAL
.Applicability Plans /Specs
Discussion of qualifying Show compliance by including a drawing sheet, detail number,
exceptions on page 4 -25 specification section and subparagraph.
1. Applicablity (SectioRECIP
Is this form required? JAN 2 3 'LOOS
El Form Required. Complete for 1f , -) ystem is being installed, or components of an
existing HVAC system are beiger6i1a.QY • uipment, controls, ductwork, and insulation.)
❑ Exception. The building or part of the building qualifies for an exception from HVAC code
requirements. Applicable code exception is Section 1317.1. Portions of the building that
qualify:
Area: Exception ❑ -1 ❑ - ❑ -3
Area: Exception ❑ -1 ❑ -2 ❑ -3
Area: Exception ❑ -1 ❑ - ❑ -3
❑ Form Not Required. This project does not contain work required to comply with code.
2. Simple or Complex Systems (Section 1317.9 or 1317.10)
El Simple System. Building contains only Simple HVAC System(s). Complete this form (4a) and
equipment efficiency worksheets as required. Form 4b is not required.
▪ ❑ Complex System. Project includes a Complex System. Complete this form (4a), form 4b and
equipment efficiency worksheets as required.
i 1
• 3. Equipment Performance (Section 1317.5)
❑ No New HVAC Equipment. The building plans do not call for new electrical HVAC equipment,
combustion heating equipment, or heat - operated cooling equipment.
o Complies. All new HVAC equipment have efficiencies not less than those required by code.
The following equipment efficiency worksheets are attached:
❑ -4a ❑ -4b ❑ -4c 1=1-4d ❑ -4e ❑ -4f ❑ -4g ❑ -4h ❑ -41 ❑ -4
4. Duct Insulation and Sealing (Sections 1317.7 & 1317.8)
❑ No Ducts. The building plans and specifications do not call for new HVAC ducts or plenums.
o Complies. The plans and specifications call for all air - handling ducts and plenums to be
insulated and sealed as required by Sections 1317.7 &1317.8.
5. Distribution Transformers (Section 1316.1)
El No Distribution Transformers. The plans /specs do not call for new distribution transformers.
❑ Complies. All new distribution transformers comply with efficiency, testing, and labeling
requirements of Section 1316.1.1.
❑ Exception. The project qualifies for an exception per Section 1316.1.1, Exceptiion:
• 0 ❑ - ❑ - ❑ - 5 ❑ - s ❑ - 7 ❑ - 8 ❑ - 9 ❑ - 10 ❑ - 1 ❑ - 12 ❑ - 1° ❑ - 14
Attach relevant documentation for appropriate exception. The plans /specs show compliance in the
e <;; following locations:
sil,MM 4'
4 -1 April 2005
Compliance with OSSC, effective 01/01/05
Form 4a Project Name: CASCADE COMPUTERS Page: 2
SYSTEMS - GENERAL
6. HVAC Controls (Section 1317.4)
. 6.1 System Thermostat /Zone Controls (Section 1317.4.1)
O Complies. All new HVAC systems include at least one temperature control device responding to
temperatures within the zones.
❑ Exception. HVAC system qualifies for an exception from zone control requirements.
The applicable code exception is Section 1317.4.2, Exception 0-1 0 -2
Portions of the building that qualify:
The plans /specs show compliance in the following locations:
6.2 Off - hour Controls - Auto Setback or Shutdown (Section 1317.4.3)
O Complies. Systems must have at least one of the following features:
O Control Setback Complies. Each system is equipped with automatic control capable of reducing
energy through control setback during periods of non -use or alternate use of spaces served.
❑ Equipment Shutdown Complies. Each system is equipped with controls capable of reducing
energy use through automatic shutdown during periods of non -use or alternate use of spaces.
HVAC systems with equipment shutdown are equipped with at least one of the following:
O Programmable controls (1317.4.3.1 (1))
❑ Occupant sensor (1317.4.3.1 (2))
❑ Interlocked to a security system (1317.4.3.1 (3))
❑ Manually activated timers with 2 -hour operation max (1317.4.3.1 (4))
❑ Exception. The building qualifies for an exception to the requirement for automatic setback or
shutdown controls. The applicable code exception is Section 1317.4.3
Exception 0-1 0-2
The plans /specs show compliance in the following locations:
6.3 Control Capabilities (Sec. 1317.4.2.1)
0 Complies. Zone thermostats are capable of being set to the temperatures described in Sec.
1317.4.2.1. Where used to control both heating and cooling, zone controls shall be capable of
providing a temperature range or deadband of at least 5 degrees F within which the supply of
heating and cooling energy to the zone is shut off or reduced to a minimum.
❑ Exception. The building qualifies for an exception to the deadband requirements.
The applicable code exception is Section 1317.4.2.1 Exception 0-1 0-2
Portions of the building that qualify:
The plans /specs show compliance in the following locations:
6.4 Optimum Start Controls (Section 1317.4.3.2)
O Complies. Separate HVAC systems have controls capable of varying start-up time of system to
just meet temperature set point at time of occupancy.
❑ Exception. HVAC systems have a design supply air capacity not exceeding 10,000 cfm.
The plans /specs show compliance in the following locations:
6.5 Heat Pump Controls (Section 1317.4.4)
3 No Heat Pump. The plans /specs do not call for a new heat pump
❑ Complies. All new heat pumps equipped with supplementary heaters are controlled to minimize
the use of supplemental heat as defined in Section 1317.4.4.
4 . = r The plans /specs show compliance in the following locations:
®r ri'
4 -2 April 2005
Compliance with OSSC, effective 01/01/05
Form 4a Project Name: CASCADE COMPUTERS Page: 3
SYSTEMS - GENERAL
• 7. Economizer Cooling (Section 1317.3)
❑ No Cooling. The building plans do not call for a new fan system with mechanical cooling.
El Complies. Each new fan system has an air economizer capable of modulating outside -air and
return -air dampers to provide up to 100 percent of the design supply air as outside air.
❑ Exception At least one new fan system qualifies for an exception. The applicable code exception
is Section 1317.3, Exception 0 ❑ - ❑ - ❑ - ❑ -
If Exception 3 is selected complete the following:
(a) Total cooling capacity of exempt units (Btu /hr)
(b) Total installed building cooling capacity (Btu /hr)
❑ Complies. Sum of exempt units rated at Tess than 54,000 Btu /hr is <240,000 Btu /hr or a/b
< 0.10 (10% of total building cooling capacity).
Unit Identifier of exempt units:
The plans /specs show compliance in the following locations:
8. Economizer Pressure Relief as Integration (Section 1317.3.1 and 1317.3.2)
❑ No Economizers Required. Project does not contain a new fan system requiring economizers.
o Overpressurization Complies. The drawings specifically identify a pressure relief mechanism for
each fan system that will relieve the extra air introduced by the economizer.
• o Integration Complies. Economizer is capable of providing partial cooling even when additional
mechanical cooling is required to meet the remainder of the cooling load.
❑ Exception. The applicable exception is Section 1317.3.2, Exception ❑ - ❑ -2
The plans /specs show compliance in the following locations:
9. Hot Gas Bypass (Section 1317.5)
o No Hot Gas Bypass
❑ Complies. See allowable amount of hot gas bypass as a percentage of total cooling capacity in
table below.
Unit ID Rated Cooling Capacity Hot Gas Bypass Capacity
� Allowable Hot Gas Bypass
Rated Cooling Capacity Max Hot Gas Bypass
,� <240,000 Btu /hr 50%
" >240,000 Btu /hr 25%
❑ Exception. Unitary packaged system with cooling capacity no greater than 90,000 Btu /h
4 -3 April 2005
Compliance with OSSC, effective 01/01/05
Form 4a Project Name: CASCADE COMPUTERS Page: 4
'SYSTEMS - GENERAL
• 10. Shutoff Dampers (1317.4.3.3)
❑ Not Required. Shutoff dampers are not requidAtbatAs04ect.
El Complies. Each outdoor air supply & exhaust 4 eropliglibliSiquipped with motorized dampers.
❑ Exception. The building qualifies for an ex :0 damper requirement. The
applicable code exception is Section 1317.4. xception ❑ -1 ❑ -2 ❑ -3 ❑ -4 ❑ -5 ❑ -6
The plans /specs show compliance in the following locations:
10.1. Shutoff Damper Controls (Section 1317.4.3.3.1)
o Complies. Outdoor air supply and exhaust systems shall be provided dampers that automatically
shut when systems or spaces served are not in use or during building warm -up, cooldown, or
setback.
❑ Complies. Stair and shaft vents are capable of being automatically closed during normal building
operation and interlocked to open as required by fire and smoke detection systems.
The plans /specs show compliance in the following locations:
10.2. Motorized Damper Leakage (1317.4.3.3.2)
El Complies. Motorized outdoor air supply and exhaust air dampers have a maximum leakage rate
of 4 cfm /ft2 at 1.0 in w.g. when tested in accordance with AMCA Standard 500 -1998.
❑ Exception. Packaged HVAC equipment may have maximum leakage rate of 20 cfm /ft at 1.0 in
w.g. when tested in accordance with AMCA Standard 500 -1998.
The plans /specs show compliance in the following locations:
11. Piping Insulation (Section 1314)
❑ No New Piping. The building plans and specifications do not call for new piping serving a
heating or cooling system or part of a circulating service water heating system.
o Complies. All new piping serving a heating or cooling system or part of a circulating service
water heating system complies with the requirements of the Code, Section 1314.1.
❑ Exception. New piping qualifies for exception: Section 1314.1, Exception ❑ -1 ❑ -2
12. Occupancy Ventilation
El Complies. Mechanical ventilation systems provide the required amount of ventilation is indicated
in plans /specifications as specified in Chapter 4 of the Oregon Mechanical Specialty Code.
❑ Complies. Natural ventilation systems provide required amount of ventilation as certified by a reg-
istered architect or engineer as specified by Section1203.4.1, Exception. Attach worksheet 4m.
The plans /specs show compliance in
the following locations:
The plans /specs show compliance
on the following pages:
4-4 April 2005
Compliance with OSSC, effective 01/01/05
(1MC.26u1 -Mg S
City of Tigard, Oregon ® 13125 SW Hall Blvd. o Tigard, OR 97223 x ..;,r
January 25, 2008 Y 'r 1.
11.**• as
NU, H
RE: MECHANICAL
Project Information AGA ')
Building Permit: MEC2008 -00035 Construction Type: 5 -B
Tenant Name: Cascade Computers Occupancy Type: B
Address: 15951 SW 72 Ave. Occupant Load: 27
Area: NA Stories: 1
The plan review was performed under the State of Oregon Mechanical Specialty Code
(OMSC) 2007 edition; and the State of Oregon Fire Code (OFC) 2007 edition. The
submitted plans are approved subject to the following.
1. Ductwork shall be supported in accordance with Sheet Metal & Air Conditioning
Contractors National Association, Inc. (SMACNA)
2. Each appliance shall be provided with a shutoff valve separate from the
appliance. The shutoff valve shall be located in the same room and within six feet
of the appliance served. Access shall be provided to the shutoff valve. C409.5
OMSC
3. Equipment and appliances regulated by this code requiring electrical connections
shall have a positive means of disconnect in accordance with the Electrical Code.
301.7 OMSC
4. Permanent equipment supported by the structure, 400 Ibs and over, shall have
their attachments designed in accordance with the Building Code. 301.16 OMSC
5. Appliances shall be accessible for inspection, service, repair or replacement
without removal of permanent construction. 306.1 OMSC
6. Manufacturer's installation instructions shall be available on the jobsite at the
time of inspection. 304.1 OMSC
7. Condensate from cooling coils or evaporators shall be collected and discharged
to an approved plumbing fixture or disposal area. 307.1 OMSC
8. Smoke detectors shall be installed in return air systems with a design
capacity greater than 2000 cfm. Upon activation, the smoke detector shall
shut down the air distribution system. Smoke detectors shall be connected
to a fire alarm system and shall activate an audible and visible alarm at a
constantly attended location. 606.2, 606.4 & 606.4.1 OMSC
Phone: 503.639.4171 o Fax: 503.684.7297 o www.tigard - or.gov o TTY Relay: 503.684.2772
9. Provide drawings for attachment of all equipment on the roof showing connection
of any curb to roof and equipment to the curb. Provide calculations and drawings
showing seismic attachment of all equipment with a weight 4001b or greater.
Approved Plans: 1 set of approved plans, bearing the City of Tigard approval stamp,
shall be maintained on the jobsite. The plans shall be available to the Building Division
inspectors throughout all phases of construction. 106.4.2 OSSC
Premises Identification: Approved numbers or addresses shall be provided for all new
buildings in such a position as to be plainly visible and legible from the street or road
fronting the property.
When submitting revised drawings or additional information, please attach a copy of the
enclosed City of Tigard, Letter of Transmittal. The letter of transmittal assists the City
of Tigard in tracking and processing the documents.
Respectfully, 1
QC . C7 — )t)
Dan Nelson,
Senior Plans Examiner
(503)718 -2436
dann @tigard - or.com
•