HomeMy WebLinkAbout1122 E Street Address:
1122 E Street
1 /22-
PREPARED 10/24/13, 9:16:35 INSPECTION TICKET PAGE. 3
CITY OF PORT ANGELES INSPECTOR: JAMES LIERLY DATE 10/24/13
------- ------------------------------------------------------------------------------------
ADDRESS - : 1122 E ST SUBDIV:
CONTRACTOR POWER TRIP ENERGY CORP PHONE (360) 643-3080
OWNER JOHN B WARDER JR PHONE
PARCEL 06-30-99-0-3-5510-0000-
APPL NUMBER: 13-00001050 RES SOLAR PROJECT
-------------------------------------------------------------------------------------------------
PERMIT: BSOL 00 BUILDING PERMIT - SOLAR
REQUESTED INSP DESCRIPTION
TYP/SQ COMPLETED RESULT RESULTS/COMMENTS
------------------------------- - -
BL99 01 10/24/13 J BLDG FINAL
October 24, 2013 8:49:55 AM pbarthol
Solar Panel Final
Nichole 360-643-3080
-------------------------------------- COMMENTS AND NOTES -------------
CITY OF PORT ANGELES
. DEPARTMENT OF COMMUNITY& ECONOMIC DEVELOPMENT-BUILDING DIVISION
0 321 EAST 5TH STREET, PORT ANGELES,WA 98362
Application Number . . . . 13-00001050 Date 9/19/13
Application pin number . . . 614950
Property Address . . . . 1122 E ST
ASSESSOR PARCEL NUMBER: 06-30-99-0-3-5510-0000- REPORT SALES TAX
Application type description RES SOLAR PROJECT on your state excise tax form
Subdivision Name . . . . . A
Property Use . . . . . to the City of Port Angeles (/ 1
Property Zoning . . . . . . . RS7 RESDNTL SINGLE FAMILY (Location Code 0502)
Application valuation . . . . 32591
Application desc
INSTALL SOLAR PLANELS ON FLAT ROOF
----------------------------------------------------------------------------
Owner Contractor
JOHN B WARDER JR POWER TRIP ENERGY CORP
1122 S E ST 2343 THOMAS ST
PORT ANGELES WA 98363 PORT TOWNSEND WA 98368
(360) 643-3080
-------------------------- --------
Permit . . . . . . BUILDING PERMIT - SOLAR S
Additional desc . . SOLAR PANEL INSTALLATION "N
Permit Fee . . . . 498.55 Plan Check Fee 50.00 {�1,
Issue Date . . . . 9/19/13 Valuation . . . . 32591 IJP
Expiration Date 3/18/14
Qty Unit Charge Per Extension
BASE FEE 417.75
8.00 10.1000 THOU BL-25,001-50K (10.10 PER K) 80.80 LA
------------------------------
Special Notes and Comments
Public Works Utility Engineering has no requirements for
this plan review.
Electrical load calculations and electrical permits are ,
required.
--------- -----------------------
other Fees . . . . . . . STATE-SURCHARGE 4.50
--—------------- -
Fee summary Charged Paid Credited Due
Permit Fee Total 498.55 498.55 .00 .00
Plan Check Total 50.00 50.00 .00 .00
Other Fee Total 4.50 4.50 .00 :00
Grand Total 553.05 553.05 .00 .00
r
Separate Permits are required for electrical work,SEPA,Shoreline,ESA,utilities,private and public improvements. This permit becomes
null and void if work or construction authorized is-.not commenced within.1810:days,if construction or work is suspended or abandoned
for a period of 180 days after the work'has commenced, or if required=inspections..have'not been..requested within 180 days from the
last inspection. I hereby certify that I have read and examined this application and know the same.to be true and correct. All provisions
of laws and ordinances governing this type of work will be complied with whether specified herein or.not. The granting of a permit does
not presume to give authority to violate or cancel the provisions of any state or local law regulating construction or the performance of
construction.
�!>- -i3
Date Print Name Signature of Contractor or Authorized Agent Signature of Owner(if owner is builder)
T:Forms/Building Division/Building Permit
BUILDING PERMIT INSPECTION RECORD
PLEASE PROVIDE A MINIMUM 24-HOUR NOTICE FOR INSPECTIONS—
Building Inspections, 417-4815 Electrical Inspections 417-4735
Public Works Utilities 417-4831 Backflow Prevention Inspections 417-4886
IT IS UNLAWFUL TO COVER,INSULATE OR CONCEAL ANY WORK BEFORE INSPECTED AND ACCEPTED.
POST PERMIT IN CONSPICUOUS LOCATION. KEEP PERMIT AND APPROVED PLANS AT JOB SITE.
Inspection Type Date Accepted By Comments
FOUNDATION:
footings
Stemwall
Foundation Drainage/Downspouts
Piers
Post Holes(Pole Bldgs.)
PLUMBING:
Under Floor/Slab
Rough-In
Water Line Meter to Bldg)
Gas Line
Back Flow/Water FINAL Date Accepted b
AIR SEAL:
Walls
Ceiling
FRAMING:
Joists/Girders/Under Floor
Shear Wall/Hold Downs
Walls/Roof/Ceiling
Drywall Interior Braced Panel Only)
T-Bar
INSULATION:
Slab
Wall/Floor/Ceiling
MECHANICAL:
Heat Pum /Furnace/FAU/Ducts
Rough-In
Gas Line
Wood Stove/Pellet/Chimney
Commercial Hood/Ducts FINAL Date Accepted b
MANUFACTURED HOMES:
Footing/Slab
Blocking&Hold Downs
Skirting
PLANNING DEPT. Separate Permit#s SEPA:
Parkin /Lighting ESA:
Landscaping SHORELINE:
FINAL INSPECTIONS REQUIRED PRIOR TO OCCUPANCY/USE
Inspection Type Date Accepted By
Electrical 417-4735
Construction-R.W. PW /Engineering 417-4831
Fire 417-4653
Planning 417-4750
Building 417-4815
T:Forms/Building Division/Building Permit
BUILDING/PLUMBING/MECHANICAL PERMIT APPLICATION - LONG FORM
(To be used for projects that require plan review) r�3
Date Received
Permit#i ® 1--- A�7�Q
�
-City of Port Angeles Please print in ink. Date Approved P I/2 f z
Attn: Building Permit Technician Approved by i
321 E. 5"'St., Port Angeles,WA 98362
360-417-4815 fax: 360417-4711 Credit card payments are accepted Mon-Fri 8-5 pm(no American Express)
Hours: Mon through Fri 8--5 pm Cash &checks are accepted Mon-Thurs 8:30-4 pm& Fri 8:30-12:30 pm
Phone:
Contact person: _rte E r9- ' �r_ ' - �6t3-331-20,(C? ------
Property owner:
::T-O kr,,, W����2T � Phone:
Property owner's mailing address:
Contractor's business name: C.�� u Phone:
or property owner's name if he/she is doing/oversee' the work)
Contractor's maiiing address:
Contractor's L&I.license number. T Expiration date: I
sem.
Project Address:
Project Type: wrlTesidential o Commercial u Industrial i Multi-family.
^
Project Business Name: . - .Zon g
(for commercial, industrial. or multi-familyProjects) ;ms:
s. F
.Farce;# 06 19035 S 1(000ne n ,Lot#�_
Complete only the portions of this permit that are relevant to your project. �Of Al^
u�,1'Gq-�
Pay the plan check fee.(based on the valuation of the project)at the time of submittal
Residential Projects submit:
(✓) ��"" Two sets of plans*(including engineering calcs, geotech reports, etc. if applicable)
Prescriptive Approach-Simple Form(confirming conformance to the Energy Code)
Commercial Projects submit:
(✓) Three sets of plans*(including engineering calcs, geotech reports, etc. if applicable)
(✓) Paperwork confirming conformance.to the Energy Code
(✓) For large projects, a pre-construction meeting with various City department ..
personnel is highly recommended..To schedule a pre-construction meeting,contact
the Planning Manager at(360)417-4750.
Additional information may need to be submitted including:
landscape plan, parking plan(including ADA spaces, ramps, etc.), utilities
(existing&proposed), curbs, sidewalks, storm water.plan, etc.
For Additions&New Structures also submit:
(✓) Site plan(8 1/2"x 11") showing all structures(existing &proposed), setbacks,&new driveways
*.If an architect or engineer drew the plans or calculations, include at least one"wet-stamped"setbf plans
and/or calculations.
T:Form s/Building Division/Building/Plumbing/Mechanical Permit Application-Long Form(Revised 2011)
Page 1 of 4
Repair 1 Solar Panels I Miscellaneous: (explain the oroiectl '
Project Valuation ''_ a c-z%Q,b�
Remodel: (explain the project including how the building space is currently being used and what the new,
remodeled use will be)
Project Valuation $
(✓} If the space will change from commercial to residential, submit:
'Checklist—Converting Commercial Space into Residential Space"
Addition: ex Iain the nroiect and.com fete&submit page 3
Maximum height of the new addition feet Project Valuation $
New Structure: (explain the project and complete&submit page 3
A L41
Maximum height of the new structure feet Project Valuation $
PLUMBING PERMIT. Will there be ANY plumbing changes(items moved,added, replaced, or altered)
Check one:
No L� -Yes (✓) If yes, complete&submit page 4"Plumbing Changes"
MECHANICAL PERMIT: Will there be ANY mechanical changes(items moved, added, replaced,or altered)
Check one:
No [/ Yes (✓} If yes,complete&submit page 4-"Mechanical Changes"
Occupancy group #of bedrooms
Will a lawn sprinkler system be installed? /vLD Occupant load _ #of full baths
Will a fire sprinkler system be installed? _,UD Construction type #of half baths
*Homeowner: If you will be doing I overseeing the work,then the project valuation will be determined by doubling the
cost of materials,to reflect the value the repair adds to your property.
Cost of materials x 2 W Project Valuation$
I have read and completed this application and know it to be true and correct 1 am authorized to apply for this permit
.and understand that it is my responsibility,to determine what permits are required, and to obtain permits prior to
wcrking on projects.
Date-(3 Signature uva_ol�
a r -
Print Name L�j-
Page 2 of 4
O•r�St,r---
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VAC
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Attachment—Page 1 of Building Permit—John Warder
Contractors Business Name: Note: This project is the installation of a roof-top solar PV array(also
addressed by the engineered plans) and this work will be conducted by Power Trip Energy.
Solar PV contractor
Business Name: Power Trip Energy, Corp
Mailing address: 83 Denny Ave, Port Townsend,WA 98368 _
Phone Number: office: 360-643-3080,cell: 360-301-9019
L&I Number: POWERTE964JN
Expiration date: 4/15/2014
J
Power 'drip Energy Corp
83 Denny Ave
Port Townsend, WA 98368
(360) 643-3080
www.powertripenergy.com
lic # POWERTE964JN
September 10,2013
Pat Bartholick
Code Compliance Officer
321 E 5th Street
P.O. Box 1150
Port Angeles, WA 98362
Dear Mr. Bartholick,
Enclosed please find a building permit and electrical permit for work to be done on John Warder's. Our company(Power
Trip Energy)will be installing a 3.4 kW solar array on the flat roof of Mr. Warder's home.
Harold Anderson's engineering report cover's this project. I've also attached engineering and specification sheets for the
solar equipment to be used.
We will be happy to pay the plan check fee by credit card as soon as you can determine what this amount will be. The
electrical permit fee will also be paid by Power Trip Energy and the credit card information is provided. The final
building permit fee will also be paid by credit card when it is ready.
If you have any additional questions please do not hesitate to call my cell phone at 360-301-9019.
Sincerely,
Jeff Randall
Solar Agent
Power Trip Energy
Attachments:
1 —Building Permit Application.
2—Electrical Permit Application
3 —Electrical Line Drawing
4—Site Plan (2)
5—Engineer's Plans(3) '
6—Cover letter to Engineer and Attachments
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Power Trop (En(ugg CoTp
83 Denny Ave
Port Townsend, WA 98368
(360) 643-3080 _
www.powrmrtripenergy.com
lic # POWERTE964JN
July 16, 2013
Harold Anderson, P.E.
Northwestern Territories, Inc.
914 Washington Street, Suite 6
Port Townsend, WA 98368
Dear Mr. Anderson,
I have prepared drawings for you of a solar array for John Warder's residence located at 1122
South E. Street in Port Angeles. Mr. Warder has contracted with Power Trip Energy to install a
3.4 kW Silicon Energy solar array on the flat roof of his home. The city of Port Angeles handles
the electrical permit and requires a building permit also be obtained prior to the installation of a
solar PV system. I have attached the city of Port Angeles FAQ sheet for residential solar
installations. This handout indicates that two sets of plans must be prepared which show:
1. The solar array can handle a minimum of 25 psf snow load and 100 mph winds; and,
2. Roof construction details be provided to show that the roof can handle the additional
weight of the solar modules.
We request your assistance in providing the necessary calculations and drawings to obtain the
city building permit. Per our previous projects of this type you estimated the cost to do this
would be about$500. Please let me know if this project will be significantly different in cost.
Issue 1: Solar Modules and Minimum 25 PSF Snow Load
This issue is pretty straightforward and is addressed by an engineering letter from WJE
Engineering from Seattle (see attached). The letter documents that the Silicon Energy solar
modules have a design load that meets 125 PSF. The city of Port Angeles accepted this stamped
letter for the Maloney Heights solar array.
Issue 2: Solar Modules and Minimum 100 MPH Wind
I have attached a stamped letter from Eric Lenz, structural engineer with Coughlin Porter
Lundeen from Seattle which documents that the Silicon Energy solar equipment will withstand
100 mph basic wind speed. The city of Port Angeles accepted this letter for the Maloney Heights
and McMahon residence solar arrays.
This system will be different from these prior installations in that it will be racked up on a flat
roof using SunModo racking equipment. I have attached a second letter from Joseph Payne,
1
P.E., S.E.,Appollo Consulting Engineering indicating that for an installation of 20-degree tilt on
a roof height of 20-ft,the wind forces are 21.3 psf of uplift and 13.4 psf of downforce,per
components and cladding design criteria in section 6.4.2.2 of ASCE 7-05. The Apollo
engineering letter also states, "[b]ased on the UL 1703 testing criteria, the Silicon Energy
Cascade Series module can resist loads up to 125 psf when properly installed with its aluminum
frame mounted foot supported at 2 locations along each side. Two SunModo Helio Standard
Rails will be connected to each module as required by the Silicon Energy installation
guidelines."
The Apollo Engineering letter concludes, "[b]ased on combined snow, wind, and dead loads,
loading is significantly lower than the allowable 125 psf on the module, and the SunModo rail is
cabable of spanning 6'0"between support points. The design is in compliance with the 2009
International Building Code."
Issue 3: Roof Construction Detail and Weight of Solar Modules
This is the issue you have addressed in the past. See the building description, array weights and
point loads, and construction details below.
Array PSP Weight and Point Loads
The Silicon Energy solar modules, framing, and hardware weigh 3.9 psf(per their specification
sheet) for a total module weight of 1060.8 pounds. The total weight of the aluminum support
rails are 0.43 psf(2 rails at 0.85 plf over a 4 ft. width), and all other associated hardware are
estimated at 0.5 psf, for an additional 130.6 pounds. With attachments the weight of the system
would be 1,229 pounds or 4.8 psf, so a dead load of 5 psf can conservatively be used. With 2
support points at 6 ft. o.c. in the east-west direction supporting modules approximately 4 ft. wide,
the point dead load for each attachment point will be 60 LB.
(Description of Warder House and hoof System
Mr. Warder's home is different from our prior projects in Port Angeles in that it has a flat roof.
The roof has 2"x 6"car decking over 6" W x 16"H x 15' to 17' long rafters (6' on center). A
torch down roof covers the whole area. There is a 9" W x 20"H x 25' long concrete beam
(reinforced with rebar)running midspan. The house has 2"x 4"walls and there is a 3" steel post
under each end of the concrete beam.
I have attached a sketch of the home including details of the roof construction and the solar array
layout. I have also attached the SunModo (Apollo Engineering) letters and specification sheets
for the racking system.
Photos of Dome
The solar array will be on a flat roof on a one story portion of the home. The home has been
added to over time and portions of the home have a daylight basement(not the part of home
where we propose the array). It is located in an urban setting on gently sloping land
(approximately 10 degrees slope).
Please see the attached sketches and photos to explain the house roof construction.
2
8 solar modules in a single row on north end. 6 modules in front row.
3 modules in middle row.
Photo 1 —North end of roof. Photo 2—View of roof looking south.
16"H x 6"W x 15'to 17'long Fir Rafters,on 6'centers..
Above 2"x 6"car decking.
9"Wx20"Hx25'
2"x 6"car decking long reinforced concrete
with torch down roof beam(wood texture),
above. running width of roof.
i
Wooden rafters attached
mi to this concrete beam.
Photo 3 -View of living room under solar roof.
3
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Photo 4—View of north side of home Photo 5 —View south interior wall of house.
showing exposed rafters. All exterior walls 6"x 6"wood posts under south end of
2"x 411. rafters.
:rs
Photo 6—North and west walls of home Photo 7- East wall of home showing power
showing exposed rafters and 6"x 6"posts service.
underneath.
4
9"W x 20"H
I - - reinforced concrete
1 beam.
7
S" Inspection port-
steel post exposed.
Jry
Photo 8—West wall of house. Inspection ports created under concrete beam. Found 3" steel
post supporting beam and set in beam and footing.
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Photos 9 & 10—Close up of top of 3"metal post (left) and bottom of post(right) embedded in
concrete.
5
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x .
Rebar
w visible
Photo 11: End of concrete 9"W x 20"H x 25' long beam exposed. Rebar visible.
Please see attachments showing overall roof plan,dimensions, solar array dimensions and
locations,and specifications for the solar modules and the SunModo attachment hardware. Let
me know if this is sufficient information for you to provide the needed information for the city of
Port Angeles building permit.
If you have any additional questions please do not hesitate to call my cell phone at 360-301-
9019.
Sincerely,
Jeff Randall
Solar Agent
Power Trip Energy
6
Attachments:
1 —Solar Array Layout and Roof Construction Details
2- SunModo Spec Sheet For Racked Up Rail System Design
3—Silicon Energy Spec Sheet
4—Silicon Energy Engineering Letter Re: 100 MPH Wind
5—Silicon Energy Engineering Letter Re: 125 PSF Design Load
6—Apollo Engineering Letter Re: 100 MPH Wind Speed and 25 PSF Snow Load
7—City of PA FAQ Sheet on Residential Solar
7
Scale = 10'
3'overhang
6"x16" rafters, 6'to 6`-6"on center Enter text
�
1 row of 8 PV modules here n 30 degree pitch over wall line wall line
sky light 19"tall x 7' long x 44" wide
2'overhang
2" x 6" car decking running
on top of and
perpendicular to rafters
3'overhang
Front row of 6 modules
— 9" x 20"concrete beam under rafters
9 7' 1 row of 3 PV modules here A- 30 degree pitch over beam
66"overhang roof framing unknown
1 row of 6 PV modules here n, 30 degree pitch over wall line
NOTES:UNLESS OTHERWISE SPECIFIED
1.DIMENSIOVSSHOWN ARE INCHES.
2.304 STAINLESS STEEL HARDWARE.ALL OTHER
0 PARTS ARE 6063 AL WITH ANODIZING. D
3
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7 K10036-001 316 RAIL SPLICE KIT 2
6 K10066-002 L FOOT KIT II
5 A20054-162 STANDOFF TILT LEO 3
4 A200SC013 STANDOFF TILT LEG KIT Al.
DETAIL C 3 SILICON ENERGY MODULE 10
2 A20015-048 ALUMINUM RAIL 48 LONG 11
DETAIL A DETAIL B 1 K10060-009 TSTANDOFF KIT 22
ITEM PART-ER DESCRIPTION QTV
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BEAUTIFUL
enerqqt-
THE SILICON ENERGY DIFFERENCE
CASCADE SERIES PV MODULE AND
MOUNTING SYSTEM, NEXT GENERATION
Silicon Energy's next generation Cascade module's
integrated design delivers simplicity, beauty, and
the flexibility to perform for all types of installations,
including sunshades, canopies, awnings, shelters,
carports and other overhead structural solutions
benefitting from light passage.
9"KINNUM 0- Jt.
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CASCADE SERIES MODULE CASCADE SERIES MOUNTING SYSTEM
Silicon Energy's Double-Glass Cascade Module is a Silicon Energy's integrated mounting system is
US-made PV module with unmatched quality, durability, engineered to optimize solar production and enable
safety, appearance, and versatility. clean and safe installations.
SILICON ENERGY ADVANTAGE: SILICON ENERGY ADVANTAGE:
• Strength - 125psf design meets the demands of the • Designed for 4' Centers, simplifying structural
highest wind and snow loads design for the US Market
• Durability - Double-Glass construction bonded with • Mounting System protects and conceals wiring
advanced laminate materials is built to last and . Modules are supported in a shingle-like pattern
backed by a 30-year warranty to optimally shed snow, dirt, debris, and increase
• Power- High efficiency crystalline solar cells air flow
• Suitable for overhead structures and integrated • Custom colors available (Architectural bronze is
designs, allowing approximately 10% light passage. standard)
ELECTRICAL CHARACTERISTICS
i ,
•0 00CERTIFICATIONS
T STC*
Rated Power(Pmax)Watts 190 195 200 205 Warranties 30-year limited power warranty
Maximum Power Voltage(Vmp) 25.3 25.5 25.6 25.6 5-year limited product warranty
Maximum Power Current(Imp) 7.5 7.7 7.8 8.0 UL 1703, (Canada and US)
Certifications Class-A Fire Rating
Open Circuit Voltage(Voc) 30.5 30.5 30.6 30.6 CEC
Short Circuit Current(Isc) 7.9 8.2 8.4 8.6 Made in Washington
Maximum System Voltage(VDC) 600 600 600 600 qualifications Made in Minnesota
Series Fuse Rating Amp(Amps-DC) 15 15 15 15 Made in USA
*Standard Test Conditions(STC)at 1000w/m2,AM 1.5 spectrum,77°F/25°C cell temperature
MECHANICAL SPECIFICATIONS , CHARACTERISTICS
Tem erature
Module Weight
55 lbs, (Module&mounting hardware weighs– 62 lbs Pmax: -0.566/°C
or 3.9 Ibs/ft2) Coefficients Voc: -0.389%/°C
Cells 49 crystalline silicon cells wired in series(7x7) Isc: 0.109%/°C
Diodes 4 bypass diodes per module Temperature _40 to 194°F(-40 to 90°C )
Frame Aluminum alloy 6063-T6 extruded Range
1/4-20 stainless steel studs with flange nuts
MOUNTING FOOT
Design Load 125 psf,front and back FEATURES
Front: 0.125 in. high transmissivity tempered float i
glass with anti-reflective(AR) coating
O /n-20MountingStuds
Construction Back:0.125 in.tempered glass ®Ground Lug
Encapsulant:Advanced encapsulant ®Conduit Fittings
Mounting Foot 0.090 in. powder coated aluminum alloy 5052 H32 3/8x 2i,Fastener Slot f
Slope of Module 1.85° (minimum mounting surface angle 5
°
) Module Frame
Connectors(Wire) Amphenol, (12AWG USE2 wire, length -- 32 inches) ®Single Pole function 4
Box
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48 ;
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❑❑❑ ❑❑� _ 1/4-20 Mounting Studs (_)
❑❑❑ 46 ❑❑❑ 4per Module
❑❑❑ ❑❑❑
44 46-1/8 1/4-20 Module 47-IR
Gmund Studs
Module Widdt �i 2 per Module ((
+) ❑❑ ❑❑❑ (+> SILICON ENERGY, LLC
s 3506 124th Street NE
(+) Marysville, WA 98271 USA
- 1/4 in Tel: 360-618-6500
Powder Coated Aluminum Module Overlap
"— Mounting Foot(Protects Wire) -..
45-3/4 Fmtencr Slots 46 SILICON ENERGY MN, LLC
(3/8x1-1/4) ,8 PO Box 376
Module Connecbrs A
Amphenol 8787 Silicon Way
lznwcsolarwm Mt. Iron, MN 55768 USA
Tel: 218-789-1710
-i 10-32 Lound Stud
51-5/8 1 H J I I I C . n
3-3/4
I
48,L 48" -� e n l. r
q y,m
H 1-7I8 in,wde Base o(Momting Foo[ H *Not to Scale,Units in Inches
www.silicon-energy.com
SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE
ATTENTION. THOROUGHLY READ INSTRUCTIONS IN USER'S MANUAL BEFORE INSTALLING Revision 01.18,2013
s E� COUGF;'{iLOMPORTERILUMB[E[EM
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y December 14,2010 CPL.Job#509-0176-03
Miriam Ginsberg
Ron Wright&Associates
2003 Western Ave.,Ste.300
Seattle,WA 98121
RE: Maloney Heights Solar Panel Permit: _
Attachment of-Solar Panels to.Structure
Dear Miriam: :
The solar panel supplier has indicated.that the solar panels will be attached to the structure with
5/16 diameter by 3"long lag bolts attached to the roof framing with.(4)attachment points for
each module.
The loading on the solar panels is based on 100-mph basic.wind'apeed with exposure C and a
seismic design category D-1.. Wind uplift controls the attachment of the panels to the structure
with the controlling uplift cladding pressure equal to 35 psf..The panel supplier.proposed
attachment to the structure is acceptable: If any Iag bolts do not land on roof framing blocking
should be placed between roof framing pieces with a Simpson A35 located.at the.ends of the
blocking piece.
Sincerely,
COUGHLIN PORTER LUNDEEN,INC.
Eric Lentz
Structural Engineer
h•
JB1 282
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„
ssIONAL��
WJEENGINEERS Wiss,Janney,Elstner Associates,Inc.
ARCHITECTS 960 South Harney Street
MATERIALS SCIENTISTS Seattle,Washington 98108
206.622.1441 tel 206.622.0701 tax
www.wje.com
Via Email
March 22,2011
Silicon Energy
3506 124th Street NE
Marysville,WA 98271
Re: Review of Design Load Testing and Rating
WJE No. 2011.0096
To whom it may concern:
At the request of Silicon .Energy, Wiss, Janney, Elstner Associates, Inc. (WJE) has reviewed the
mechanical load test results reported by Intertek, an Occupational Safety & Health Administration
(OSHA) Nationally Recognized Testing Laboratory (NRTL), for the Cascade PV Module assembly
including the module and mounting system manufactured by Silicon Energy. The Cascade PV Module
assembly is described in Cascade PV Module Manual Revision 3, and the Cascade System Installation
Guide Revision 2. The PV Module assembly is approximately 51-3/4 inches wide by 47-1/2 inches long
and consists of two layers of 1/8 inch thick tempered glass laminated together and attached to an 1/8 inch
thick aluminum frame mounting foot. Silicon Energy has asked that we review the relevant mechanical
load test results and report our findings in this letter.
We have reviewed the relevant portions of the Intertek test report titled Listing Constructional Data
Report issued June 23, 2009, and revised August 3, 2010. Load testing was conducted by Intertek in
accordance with the test standard Flat-Plate Photovoltaic Modules and Panels- UL 1703 dated March 15,
2002(UL 1703) Section 41 Mechanical Loading Test.According to the test report,the design load for the
Cascade PV Module assembly confirmed by the testing is 125 pounds per square-foot (psf). The Silicon
Energy PV Models covered by the test report include the following: SiE-150, SiE-155, SiE-160, SiE-165,
SiE-170, SiE-175, SiE-180, SiE-185, SiE-190, SiE-195, and SiE-200. It is reported that these models are
identical in every construction detail,and differ only in cell efficiency and electrical rating.
Sincerely,
WISS,JANNEY,ELSTNER ASSOCIATES,INC. WAS�"�
14.
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no Martin,P.E. t
Project Manager
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p:\2011\0096 silicon energy consulting(zm)\correspondence\letter.docx
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Headquarters&Laboratories-Northbrook,Illinois
Atlanta Austin I Boston I Chicago I Cleveland I Dallas I Denver I Detroit Honolulu Houston _
Los Angeles I Minneapolis j New Haven j New York I Princeton I San Francisco Seattle I Washington,DC
July 9, 2013
Mr. Tony Liu
President and CEO
SunModo Corp.
1905 E 5th St,Suite A
Vancouver, WA 98661
RE: Silicon Energy Modules&SunModo Rails
Power Trip Energy Installation
1122 South E. Street
Port Angeles, WA 98363
Dear Tony:
I have analyzed the SunModo Helio Standard aluminum rail for its use with the Silicon Energy Cascade
Series solar module.The following load criteria were used based on City of Port Angeles requirements:
• Roof snow load =25 psf
• Basic Wind Speed = 100 mph, Exposure Category C( >1,500 ft from shoreline)
For an installation of 20-degree tilt on a roof height of 20-ft, the wind forces are 21.3 psf of uplift and
13.4 psf of downforce, per components and cladding design criteria in section 6.4.2.2 of ASCE 7-05.
Based on the UL 1703 testing criteria,the Silicon Energy Cascade Series module can resist loads up to
125 psf when properly installed with its aluminum frame mounted foot supported at 2 locations along
each side.Two SunModo Helio Standard rails will be connected to each module as required by the
Silicon Energy installation guidelines.
Based on combined snow,wind, and dead loads, loading is significantly lower than the allowable 125 psf
on the module, and the SunModo rail is capable of spanning 6'-0" between support points.
This design is in compliance with the 2009 International Building Code.
Please let me know if you have any additional questions.
Sincerely,
c�^ S�Yx F NJ,S�. �Y WASFIt�r��'
Joseph Payne, P.E., S.E.
GA� rRUC-r
3SrO.NAL
Page 1 of 1
QUADRA ENGINEERING, SP
1630 WALNUT STREET
P.O. Box 2094
PORT TOWNSEND, WA 98368 D D
(360) 379-9117; (360) 460-7311 cell
htandersen@q.com
ENGINEERING, SP
August 28, 2013 f"Y nt P�)7T•"-,''fes E3—Constriction Plans
: ihis permit tri cd upon these plans,specifi-
Jeff Randall other data shill not prevent the building official
:crafter requiring the correc*an of errors in said
Solar Agent specifications and other data, or from preventing
Power Trip Energy Corp �u Iding operations being carried on thereunder when in
83 Denny Avenue vial?tion of all codes and ordinances 67 this jurisdiction.
crnnni gniy� 7—"m 6�p
Port Townsend, WA 98368 ��� v
Approval Date By
Dear Mr Randall: 'Its d��PL�
�7,. fc d j
This is to report on my analysis of the Warder Residence roof system at 1122 South E
Street in Port Angeles. This was done to satisfy the City requirement for a licensed
engineer's opinion on structural adequacy of this roof to support new solar panels.
As you know, the roof must hold 25 pounds per square foot snow load, the existing
dead load and an additional 5 psf for solar panels. Panel locations are shown on the
roof framing plan you provided. You also provided geometry of the existing roof
system, panel attachment details, and engineer letters of verification for panel
attachment adequacy. Our work was strictly related to roof framing adequacy.
Engineering calculations for this analysis are attached.
This house has a flat roof. Framing consists of 6x16 inch timber beams, spaced 6 feet
apart. They are supported by 2x4 stud walls at the house exterior and by a 9x20 inch
concrete beam at the house center. There is 2x6 decking between beams. In my
analysis I used 16 psf dead load, the 5 psf panel load and the required 25 psf snow
load. Engineering calculations for this analysis are attached.
My analysis indicates that the existing roof system will adequately support the
solar panels you propose to use. My only recommendation is that you change the
SunModo panel support equipment legs from 4 foot spacing to 6 foot spacing. (This is
acceptable according to Joseph Payne, PE; Apollo Consulting Engineering; in a 7-9-
13 letter to the SunModo Corporation, attached.) This revised spacing will place all
roof to support connections at the 6x16 beams and not on decking between beams.
Use two 3/8-inch diameter lag bolts at each leg with a minimum of 2-inches
penetration into the 6x16 beam.
.S�
trust that the City will be satisfied with this level of analysis. However, if you or the
City require additional information, please let me know. I am happy to provide
whatever else may be needed.
R spectfully;
Harold T Andersen, PE
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STRUCTURAL ANALYSIS
for
INSTALLATION OF SOLAR PANELS ON AN
EXISTING ROOF SYSTEM
WARDER RESIDENCE
1122 S. "E" STREET
PORT ANGELES, WASHINGTON 98362
7 pages total including this cover
(Quadra Job No 13-25)
prepared for:
POWER TRIP ENERGY
83 Denny Avenue
Port Townsend, WA 98368
(360) 643-3080
prepared by:
Quadra Engineering
PO Box 2094
Port Townsend, WA 98368
360 379-9117
htandersen@q.com
August 28, 2013
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