1 MCKINLEY RD - BUILDING INSPECTION (3) �g" q t� ��zs
T13 -1 �1 - 11� � ED
,,e,y The Commonwealth of Massachu��E�j1�NAL
' '� Board of Building Regulations and Standards CIi'Y OF
���� Massachusetts State Building Code, 780 Ca'yi2.,QV ' .L P ��pised Mar 20/1
. Building Permit Applica[ion To Construct, Repair, Rendvate Or Demolish a
One-or Two-Family Dwel(ing
� This Section For Offi ial Use Only
Building Permit Number: D e Applied:
� ��.7 ���G
Building Official(Prinl Name) Signature Date
� SECTION 1:SITE INFORMATION
LI Proper[y AdGgss: ��Q� � 1.2 Assessors Map&Parcel Numbers
� t"�, �
� L I a is[his an accepted s[ree[?yes no Map Number Parcef Number
1.3 Zoning Information: 1.4 Property Dimensions:
Zoning Uistrict Proposed Use Lo[Area(sq R) Fron[age(fl)
� 1.5 Building Setbacks(ft) �
� Front Yard Side Yards Rear Yard
Reyuired Provided Required Provided Reyuired Provided
1.6 Wa[er Supply:(M.G.L c.40,§54) 1J Flood Zone information: 1.S Sewage Disposal Sys[em:
Poblic❑ Private❑ Zone: _ Outside Flood Zone? Municipal O On si[c disposal system ❑
� Check ifyesO
SECTION 2: PROPERTY OWNERSHIP'
2.1 Owner ofRecor��ndyTheriault Salem, MA. 01970
Name(Print) � McKinleyRd City,Sta[e,ZIP pcterri@comcast.net
978-744-1206
No.and Slreel Telephone Email Address
SECTION 3:DESCRIPTION OF PROPOSED WORK�(check all that apply)
New ConsVuction❑ Exis[ing Building❑ Owner-Occupied ❑ Repairs(s) ❑ Alteration(s) ❑ Addition ❑
Demolition ❑ Accessory Bldg. ❑ NumberofUnits Other ❑ Specily:
Brief Description of Proposed Work': V� �
SrAOi A �LtCt—iu�'�
�kl o [�`U�oAIJ '
a • S ' s v�
SECTION 4: ESTI ATED CONSTRUCTION COSTS
Item Estimated Costs: OtTicial Use Only
{Labor and Materials)
I. Building $ �(U�(� I. Huilding Permit Fee:$ Indicate how fee is determined:
❑Standard City/Town Application Fee
2.Electrical $ 1'L'Zt{,0-00 ❑Total Project Cost'(Item 6)x multiplier x
3.Plumbing $ 2. Other Fees: $
4.Mechanical (HVAC) $ List:
5.Mechanical (Fire $
Su ression Total All Fees:$
Check No. Check Amount: Cash Amount:
6.Total Project Cost: $ �;'Z"�SO,� ❑paid in Full ❑Outstanding Balance Due:
SECTION 5: CONSTRUCTION SERVICES
_ 5.1 Construction Supervisor License(CSL) O��z�� , � �
J �m�� S��(��,� Licznse Number Expira[ion Dare
Name of CSL Holder
_ � � � \\,CA� '0 A List CSL Type(see below) U
� �� (/v�
No.and Street Type Descrip[ion
p ,� Xh ' ' ^ ,/l,. ... �\�'nU� U Unrestricted(Buildin s u [0 35 000 cu.ftJ
�{ n/w� �' �" UU� `"1 R Restricted I&2 Famil fhvellin
City/Towq S[a[e,ZI M Mason
RC Roofin Coverin
WS Windowand5idin
\,.' SF Solid Fuel Buming Appliances
�1°G��OS��Q.� M�ls(�i��iU�vjl�i�LlY� � I Insulation
Telc hune Emailaddress D Demolition
5.2 Registered Home[mprovement Contractor(HIC)
V\�) \Yl�t' �cx'� \�v�'s�-145 � �,hl1�n
HIC Registratiun Number Expiration Da[e
HIC Comq�y,1N\m�r„(�IIC,Regis n[Name
v� "J �O(�
No.an treet u U,C ��� �� �,�/�x. Email address
NY>
Ci /Town,Sta[e,ZIP Tele hone
SECT[ON 6:WORKERS'COMPENSAT[ON INSURANCE AFFIDAVIT(M.G.L.c. 152.§ 25C(6)) �
Workers Compensation Insurance affidavi[mus[be completed and submitted with this application. Failure to provide
this affidavit will resul[in the denial ofthe Issuance of[he building permit.
Signed Af£davit Attached7 Yes ..........❑ No...........❑
SECTION 7a:OWNER AUTHORIZATiON TO BE COMPLETED W HEN .
OWNER'S AGEMT OR CONTRACTOR APPLIES FOR BUILDINC PERMIT
i,as Owner of the subject property,hereby authorize ���lYl t $D�� I
ro act on my be If,in all matters relativ to work authorized by[his building permi[application. I�
�I
���UA 1 1 /6/14
Print Owner's Name(Eleclronic SignaWre) Da[e
SECTION 76:OWNER' OR AUTHORIZED AGENT DECLARATION
By entering my name bebw,I hereby attest under the pains and penalties of perjury[hat all of[he information
contained in this application is Vue and accurate[o the best of my knowledge and understanding.
�/v�� �_.�� � � �' 1 `�u
Prin[Owner's or Au[horized AgenP e(Ele nic Signa[ure) Da[e
MOTES:
I. An Owner who obtains a building permit to do his/her own work,or an owner who hires an unregistered cont�actor
(not registered in[he Home Improvement Convactor(HIC)Program),will not have access to the arbitration
program or guaranry fund under M.G.L.c. I42A.Other importan[information on the HIC Program can be found at
w�vw.mass.eov�oca Information on[he Construction Supervisor License can be fbund at www.mass.eov%d�s
2. When substantial work is planned,provide Ihe information below:
Total Floor area(sq.ftJ (including garage,finished basemendattics,decks or porch)
Gross living area(sq.ft.) Habitable room count
Number of fireplaces Number of bedrooms
Number of bathrooms Number of halflbaths
Type of heating system Number of decks/porches
Type of cooling system Enclosed Open
3. "Total Project Square Footage"may be substitu[ed for"Total Project CosP'
A�� CERTIFICATE OF LIABILITY INSURANCE °,o;�;�o";�°"""�'
THIS CERTIFICATE IS ISSUED AS A MATTER OF INFORMATION ONLY AND CONFERS NO RIGHTS UPON THE CERTIFICATE HOLDER. THIS
CERTIFICATE DOES NOT AFFIRMA7IVELY OR NEGAIIVELY AMEND, EXTEND OR ALTER THE COVERAGE AFFORDED 8Y THE POLICIES
BELOW. THIS CERTIFICATE OP INSURANCE DOES NOT CONSTIiUTE A CONTRACT BE7WEEN THE ISSUING INSURER(S), AUTHORIZED
REPRESENTATIVE OR PRODUCER,AND THE CERTIFICATE HOLDER.
� IMPORTANT: If the certificate holder is an ADDIiIONAL INSURED,the policy(ies) must be endorsed. If SUBROGATION IS WAIVED,subject to
� fhe terms antl eontlitlons of the policy,certain policies may require an endorsement A sWtement on this certiflcate does not confer righls to the
� eeRificate holder in lieu of such endorsement�s).
� PRODUCER CIXJTA
MARSH USA INC. NAME:
122517TH STREET,SUITE 1300 P��NE ac No:
DENVER,CO 80202-5534 E'MA��
Attn:Denver.ceNequesl@marsh.wm.Fax:212.948.4381 ����:
INSURE S AFFORDINGCOVERAGE NAICk
46273&STN0.GAWUE-1415 wsuaers a:Evanston Insu2nce Company 35378
INSURED Zunch American Insu2nce Company 16535
Vvin�Solar,In¢ msuaen e:
Vhnt Salar Developer LLC ixSuaEa c:Amencan Zunch Insurance Company 40142
3301 North Thanksgivi�Way INSIIRER D:
Suita 500
. LChI,UT84043 INSURERE:
INSURER F:
COVERAGES CERTIFICATE NUMBER: SEa-On2368030.08 REVISION NUMBER:O
THIS IS TO CERTIFV THAT THE POLICIES OF INSURANCE LISTED BELOW HAVE BEEN ISSUED TO THE INSURED NAMED ABOVE FOR THE POLICV PERIOD
INDICATED. NOTWITHSTANDING ANY REQUIREMENT, TERM OR CONDITION OF ANY CONTRACT OR OTHER DOCUMENT WITH RESPECT TO WHICH THIS
CERTIFICATE MAV BE ISSUED OR MAV PERTAIN, THE INSURANCE AFFORDED BV THE POLICIES DESCRIBED HEREIN IS SUBJECT TO ALL THE TERMS,
EXCLUSIONS AND CONDITIONS OF SUCH POLICIES.LIMITS SHOWN MAY HAVE BEEN REDUCED BV PAID CLAIMS.
INSR rypEOFINSURANCE ADOLSUBR pQV�.NUMBER M�CYEFF MP�pp� LIMITS
LTR
A GeNEnnLunBlurr 14PKGWE00274 11/01/2014 11/01I2O15 EqCHOCCURRENCE $ 7,000,000
x COMMERCIAL GENERAL LIABILITV PREMISES Ea ocruRence S SO,OOO
CLAIMSMADE a OCCUR MEDEXP(Mywreparson) E 5,000
X $5,000�ed.BI 8 PD PERSOnuL 8 ADV INJURY g 1,OOU,000
GENERALAGGREGATE $ Z,OOO,OOO
GEN'LFGGREGATELIMITAPPLIESPER: PRODUCTS-COMP/OPAGG S 2.000,000
POLICV X PR0. lOC E
B AIITOMO8ILELIABILIiY BAP509601500 11/01/2014 11/01/2�i5 �MBINEDSINGI.ELIMIT 1,000,�
EaactiUent S
X A�,�yA�� BOOILVIWURV(Perperson) S
ALLOWNED SCHEDULED BOOILVINJURV(PeracciCart) S
x H RT OSAUTOS X AUT S�ED Pe�ac 0 MDAMAGE S
S
A UMBRELLALIAB X �C�R 14EFXWEOOOBB 11/01/2074 11/�1/�15 EqCHOCCURRENCE E 5,000,�0�
X ����8 CLAIMSMAOE AGGREGATE S $,OOO,OOO
DED RETENTIONS S
� WORKERSCOMPENSATION WC509601300 i1101/2014 11/�i/2�15 `NCSTATU- OTH-
B ndoemv�orerss•uaeiuTr W�509601400 ��io�rzoia �irovzois �,oao.000
OFFICERIMEMBERE%CWDED ECUTIVE� N�p . E.LEACHACCIDENT S
(ManEatorylnNN) E.L.DISEASE-EAEMP�OVE E 1,��,���
If yes,OescnDe wEer 7,000,000
DESCRIPTIONOFOPERATIONSOebw E.L.OISEASE-POLICVLIMIT E
A Ertors&Omissions& i4PKGWE00274 iiN1/2014 11/01/2015 LIMIT 1,000,000
Contractors Pollu6on �DEDUCTIBLE 5,000
OESCRIPiION OF OPERATIONS I LOCATIONS I VEHICLES �Atlaeh ACORD 101,AJtlitlonal fte�re�ke Schetlule,if more epaee in iequlreE)
� The CerfiFlcate Holder and others az defined in Ne written ag2emen[a2 ir¢iuded as addi6onal insured where requiretl by writlen contracl with respect ta Generdl Liability.This insurance is D��M'aiM norF
� contri6utory over any e�isting insu2nce anA limited to liahiliry ansing out af fhe opea6ons of ihe nametl insurea and where required by wntten conVact Waver of su0rogation is applirable where requiretl by wrilten
cantract with re50���nerel Liability antl Workers Compensation.
CERTIFICATE HOLDER CANCELLATION
City of Salem SHOULD ANY OF THE ABOVE DESCRIBED POLICIES BE CANCELLED BEFORE
93 Washington Sffeet THE EXPIRATION DATE THEREOF, NOTICE WILL BE DELNERED IN
Salem,MA 01970 ACCORDANCE WITN THE POIICY PROVISIONS.
AUTIORIZED REPRESENTATIVE
M Merah USA Inc.
Ka[hleenM.Parsloe � �Yex/fie�c.�n� fQca4�
�O 7988-2010 ACORD CORPORATION. All rights reserved.
ACORD 25(2010/05) The ACORD name and logo are registered marks of ACORD
The Commonwealth of Massachusetts
Department of IndustrialAccidenis
Office of Investigations
I Congress Street,Suite 100
Boston,MA 02114-2017
Ulf, www massgov/dia
Workers'Compensation Insurance Affidavit: Builders/Contractors/Electricians/Plumbers
Applicant Information Please Print Leeibly
Name (Business/Organizationnndividuaq: Vivint Solar Developer, LLC
Address:3301 North Thanksgiving Way, Suite 500
City/State/Zip: Lehi, UT 84043 Phone#:801-377-9111 t
Are you an employer? Check the appropriate box: Type of project(required):
I.E I am a employer with 10 4. ❑ I am a general contractor and I
employees(full and/or part-time).* have hired the sub-contractors 6. ❑New construction
2.❑ I am a sole proprietor or partner- listed on the attached sheet. 7. ❑ Remodeling
ship and have no employees These sub-contractors have g, ❑ Demolition
working for me in any capacity. employees and have workers' 9. ❑ Building addition
[No workers' comp. insurance comp. insurance?
required.] 5. ❑ We are a corporation and its 10.❑ Electrical repairs or additions
3.❑ I am a homeowner doing all work officers have exercised their I I.F] Plumbing repairs or additions
myself [No workers' comp. right of exemption per MGL 12.❑ Roof repairs
insurance required.]t c. 152, §1(4),and we have no Solar Installation
employees. [No workers' 13.01 Other
comp. insurance required.]
*Any applicant that checks box 41 must also fill out the section below showing their workers'compensation policy information.
t Homeowners who submit this affidavit indicating they are doing all work and then hire outside contractors must submit a new affidavit indicating such.
:Contractors that check this box must attached an additional sheet showing the name of the sub-contractors and state whether or not those entities have
employees. If the sub-contractors have employees,they must provide their workers'comp.policy number.
I am an employer that is providing workers'compensation insurance for my employees. Below is Ilse policy and job site
information.
Insurance Company Name:Zurich American Insurance Company
Policy#or Self-ins. Liic.#:VWC,�5,0.9601`300� � 1 Expiration Date:11//1/,2,0(15n
Job Site Address: 6 I� C1 An\SIJ.� I C/l City/State/Zip: �(/��.y,
Attach a copy of the workers' compensation policy declaration page(showing the policy number and expiration date).
Failure to secure coverage as required under Section 25A of MGL c. 152 can lead to the imposition of criminal penalties of a
fine up to$1,500.00 and/or one-year imprisonment,as well as civil penalties in the form of a STOP WORK ORDER and a fine
of up to$250.00 a day against the violator. Be advised that a copy of this statement may be forwarded to the Office of
Investigations of the DIA for insurance coverage verification.
I do hereby certify under the pains and penalties ofperjury that the information provided above is true and correct
Signature /®��-�—`-� Date:
Phone#: 801-2296459
Official use only. Do not write in this area,to be completed by city or town official.
City or Town: Permit/License #
Issuing Authority(circle one):
1. Board of Health 2. Building Department 3.City/Town Clerk 4. Electrical Inspector S.Plumbing Inspector
6.Other
Contact Person: Phone#:
10 Park Plaza - Suite 5170
Boston, Massachusetts 02116
Dome Improvement Contractor Registration
Registration: 170848
Type: Supplement Card
VIVINT SOLAR DEVELOPER LLC. Expiration: 1/5/2016
JAMES SHERMAN
4931 NORTH 300 WEST
PROVO, LIT 84604
Update Address and return card.Mark reason for change.
scat 0 ZOW05/11 Address Renewal ❑ Employment ❑ Lost Card
t� Massachusetts -Department of Public Safety
Board of Building Regulations and Standards
Construction Supenisor
License: CS-045294
JAMES R sHERMAN ` - - �,•;''
6 Fox Hollow Dri* r,
SAUGUS MA 01406
Expiration
Commissioner
0812812016
1 McKinley Rd , Salem MA 01970 0
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PV INTERCONNECTION POINT, Y Z
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&UTILITY METER LOCATION =3—
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JUNCTION BOX ATTACHEDT
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M ROOF m m INSTALLER NUMBER:1 B]]404 4129 p�gp�(��a@.w 1/,x,1 1 , 1 MCKinle Rd
PV 2,0 M MA LICENSE'MAHIC 170848 V Y V Y Y • _' L Salem,MA 019]0 1, s
PLAN DRAWN BY:Jerry S AR 4033899 ast MOGifeE:101912014 UTILITY ACCOUNT NUMBER:00835-19000
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Inverter Ratings(Guide Section 4) 0 Conduit and Conductor Schedule
favorer Make/MMaI I Enphese M215E0QLLS2x-ZC Top Dn.allon Was Gauge pot Conductors Conduit Type Connu.(atilt
MODULE DETAIL Max DC Voll Rating 45 VOIM ^'
1 Enphase engage refile-THWN-2 14 AWG =Uo� NIA-Free Air WMax Parver®CO°C 215 WellsNominal AC Vdtape 24p Volts 1 Bare CopperGmuno(EGOGEL) 6AWGNIAYingli Energy YL255P-29b Max AC Curren ce Amps 2 THWN2 10AWGp SOLAR MODULE Max Oxi Rapng 20 Amps in
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NOTES FOR INVERTER CIRCUIT91Guitla Sadion 6antl 81: 6AWGho
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1.)IF UTILITY REQUIRES A SWITCH,DOES THIS PV Module Ratings @ STC(Guide Section 5) ,a D
Enphase M215-60-2LL-52x-ZC SWITCH MEET THE REQUIREMENTS? 2 -Z
MICRO-INVERTER AT YES NO XNA Madel Make/Model Yingli Energy YL255P-29b erg v2
Max PowerPoint Current 9mp) 8.32 Amps
EACH MODULE,ATTACHED 2J IF GENERATION METER REQUIRED,DOES THIS METER Max Powernoint Voltage(Vmp) 30.6 Volts ��GO
WITH ECO HARDWARE SOCKET MEET THE REQUIREMENTS? Open-Circult Voltage(Vao) 38.7 Volta U
VES NO XNA Sho16Lmuit Consul(Isa) 688 Amps •L a
3.)SIZE PHOTOVOLTAIC POWER SOURCE DC)CONDUCTORS Max Series Fuse(OCPD) 15 Amps
BASED ON MAX CURRENT ON NEC 690.53 SIGN OR OCPO Nominal Maximum Prover at STC(Pmao 255 Watts
MICROINVERTER CONNECTION _ RATING AT DISCONNECT. Maximum System Voltage 10000ECy800(uL) H j
TO ENGAGE TRUNK CABLE 4.)SIZE INVERTER OUTPUT(AC)CONDUCTORS ACCORDING Voc Temperature Computing
^ TO INVERTER OCPD AMPERE RATING(See Guide Section 9).
V 5.)TOTAL OF 1 INVERTER OCPD(af ONE FOR EACH NOTES FOR ARRAY CIRCUIT WIRING(Guide Section 6 and 8 and Appendix Dl:
W CIRCUIT.DOES TOTAL SUPPLY BREAKERS COMPLY
WITH 120%BUSBAR EXCEPTION IN t)Lowest expected ambient temperature based on ASHRAE minimum mean extreme
#6 BARE CU GROUND IM1
NEC 69TB)(2)(a)? XYES NO dry bulb temperature for ASHRAE location most similar to installation location: -19-C C`:
(GROUNDING
ARRAY) _ Signs(See Guide Section 7) 2.)Highest continuous ambient temperature based on ASHRAE highest month 2%dry bulb
temperature for ASHRAE location most similar to installation location: 39-C • /
Sign for inverter OCPD and AC Disconnect 3.)2005 ASHRAE fundamentals 2%design temperatures do not exceed 47°C in the t rx"
44
United States(Palm Springs,CA is .1°C).For less than 9 cunenlcarring conductors t1 ,
Solar PV System AC Point of Connection in hoof-rnounted sunlit conduit at least 0.5"above hoof and using the outdoor design
AC Output Current 9.000000 Ampstemperature of 47°C or less(all of United States). _
Nominal AC Voltage 240 Valls a.)12 Ali 90°C conductors are generally acceptable for modules with lsc of Tell Amps
or less when protected by a 12-Amp or smaller fuse.
THIS PANEL FED BY MULTIPLE SOURCES g m
(UTILITY AND SOLAR) hT 10 AWG,90-C conductors are generally acceptable for modules with lsc of 9.6 Amps n
or less when protectedb a 15-Amp or smeller fuse.
NOTE:NEUTRAL CONDUCTOR(S)OMITTED FOR CLARITY
ALL INVERTER OUTPUT CIRCUITS WILL HAVE A NEUTRAL CONDUCTOR •�
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NEC 2014 Compliant GROUND SPLICE E 1.0 \ E 1.0 U5934-XL-BLG E 1.0 E 1.0 W
�7 V 0 Y 13 C) f C I 3301 North Thanksgiving Way,Suite 500
Structural Group Lehi,UT 84043
P: (801)234-7050
Scott E. Wyssling, PE
Head of Structural Engineering scott.wysslingCo vivintsolar.com
October 29, 2014
Mr. Dan Rock, Project Manager
Vivint Solar
24 Normac Road
Woburn MA 01801
Re: Structural Engineering Services
Theriault Residence
1 McKinley Road, Salem MA
S-4033899
2.55 kW System
Dear Mr. Rock:
Pursuant to your request, we have reviewed the following information regarding solar panel installation on the roof
of the above referenced home:
1. Site Visit/Verification Form prepared by a Vivint Solar representative identifying specific site information
including size and spacing of rafters for the existing roof structure.
2. Design drawings of the proposed system including a site plan, roof plan and connection details for the
solar panels. This information was prepared by the Design Group and will be utilized for approval and
construction of the proposed system.
3. Photovoltaic Rooftop Solar System Permit Submittal identifying design parameters for the solar system.
4. Photographs of the interior and exterior of the roof system identifying existing structural members and
their conditions.
Based on the above information we have evaluated the structural capacity of the existing roof system to support
the additional loads imposed by the solar panels and have the following comments related to our review and
evaluation:
Description of Residence:
The existing residence is typical wood framing construction with the roof system consisting of assumed 2 x 6
dimensional lumber at 16"on center. The attic space is partially finished and photos indicate that there was limited
access to visually inspect the size and condition of the roof rafters. All wood material utilized for the roof system is
assumed to be Spruce-Pine-Fir #2 or better with standard construction components. Our review of the photos of
the exterior roof does not indicate any signs of settlement or misalignment caused by overstressed underlying
members.
Stability Evaluation:
A. Wind Uplift Loading
1. Refer to attached Ecolibrium Solar calculations sheet for ASCE/SEI 7-10 Minimum Design Loads for
Buildings and other Structures, wind speed of 100 mph based on Exposure Category "B" and 10 and 34
degree roof slopes on the dwelling areas. Ground snow load is 40 PSF for Exposure "B", Zone 2 per
(ASCE/SEI 7-10).
2. Total area subject to wind uplift is calculated for the Interior, Edge and Corner Zones of the dwelling.
vivi t. s o l o
Page 2 of 2
B. Loading Criteria
10 PSF= Dead Load roofing/framing 40 PSF= Live Load (ground snow load)
5 PSF= Dead Load solar panels/mounting hardware
Total Dead Load=15 PSF
The above values are within acceptable limits of recognized industry standards for similar structures. Analysis
performed of the existing roof structure utilizing the above loading criteria indicates that the existing rafters will
support the additional panel loading without damage, if installed correctly.
C. Roof Structure Capacity
1. The photographs provided of the attic space and roof rafters show that the framing is in good condition
with no visible signs of damage caused by prior overstressing.
D. Solar Panel Anchorage
1. The solar panels shall be mounted in accordance with the most recent "Ecolibrium Solar Installation
Manual', which can be found on the Ecolibrium Solar website (ecolibriumsolar.com). If during solar panel
installation, the roof framing members appear unstable, deteriorated, structurally compromised or deflect
non-uniformly, our office should be notified before proceeding with the installation.
2. Maximum allowable pullout per lag screw is 235 lbs/inch of penetration as identified in the National Design
Standards (NDS) of timber construction specifications for Hem-Fir (North Lumber) assumed. Based on
our evaluation, the pullout value, utilizing a penetration depth of 2 1/2', is less than what is allowable per
connection and therefore is adequate. Based on the variable factors for the existing roof framing and
installation tolerances, using a thread depth of 2 1/2" with a minimum size of 5/16" lag screw per
attachment point for panel anchor mounts should be adequate with a sufficient factor of safety.
3. Considering the roof slopes, the size, spacing, condition of roof, the panel supports shall be placed at and
attached to no greater than every fourth roof rafter as panels are installed perpendicular across rafters
and no greater than the panel length when installed parallel to the rafters (portrait). No panel supports
spacing shall be greater than four (4) rafter spaces or 64"o/c, whichever is less.
4. Panel supports connections shall be staggered to distribute load to adjacent rafters.
Based on the above evaluation, it is the opinion of this office that with appropriate panel anchors being utilized the
roof system will adequately support the additional loading imposed by the solar panels. This evaluation is based on
information supplied to us at the time of this report and current industry standards and practices.
Should you have any questions regarding the above or if you require further information do not hesitate to contact me.
ery truly yours,10
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Scott E. WY ling, o 5
MA License No.
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Vivint Solar - PV Solar Rooftop System Permit Submittal
1. Project Information
Project Name: CINDY THERIAULT
Project Address: 1 McKinley Rd,Salem MA
A.System Description:
The array consists of a 2.55 kW DC roof-mounted Photovoltaic power system operating in parallel with the utility grid.There are (10)
255-watt modules and 10 215-watt micro-inverters,mounted on the back of each PV module.The array includes (1) PV circuit(s).The
array is mounted to the roof using the engineered racking solution from Ecolibrium Solar.
B.Site Design Temperature: (From Boston Logan INT'L ARPT weather station)
Average low temperature: -21.1 °C (-5.98°F)
Average high temperature: 38.4°C (101.12°F)
C. Minimum Design Loads:
Ground Snow Load: 40 psf (State Board BR&S)
Design Wind Speed: 100 mph (State Board BR&S)
2. Structural Review of PV Array Mounting System:
A. System Description:
1. Roof tvpe: EcoX Comp. Shingle
2.Method and type of weatherproofing roof penetrations: Flashing
B. Mounting System Information:
1.Mounting system is an engineered product designed to mount PV modules
2. For manufactured mounting systems,following information applies:
a.Mounting System Manufacturer: Ecolibrium Solar
b.Product Name: Ecorall
c.Total Weight of PV Modules and mounting hardware: 421 lbs
d.Total number of attachment points: 24
e.Weight per attachment point: 17.54 lbs
f.Maximum spacing between attachment points: * See attached engineering talcs
g.Total surface area of PV array: 175.84 square feet
h.Array pounds per square foot: 2.39 lbs/square foot
i.Distributed weight of PV array on roof sections:
-Roof section 1: (4)modules,(12)attachments 14.03 pounds
-Roof section 2: (6)modules,(12)attachments 21.05 pounds per square foot
Vivim. '3-U.-3f
3. Electrical Components:
A. Module (UL 1703 Listed) Qty
Yingh Energy YL255P-29b 10 modules
Module Specs
Pmax-nominal maximum power at STC - 255 watts
Vmp-rated voltage at maximum power - 30 volts
Voc-rated open-circuit voltage - 37.7 volts
Imp-rated current at maximum power - 8.49 amps
Ise- rate short circuit current - 9.01 amps
B. Inverter (UL 1741 listed) Qty
EnP hale M215-60-2LL-S22 10 inverters
Inverter Specs
1. Input Data (DC in)
Recommended input power(DC) - 260 watts
Max.input DC Voltage - 45 volts
Peak power tracking voltage - 22V- 36V
Min./Max. start voltage - 22V/45V
Max.DC short circuit current - 15 amps
Max.input current - 10.5 amps
2. Output Data (AC Out)
Max.output power - 215 watts
Nominal output current - 0.9 amps
Nominal voltage - 240 volts
Max.units per PV circuit - 17 micro-inverters
Max.OCPD rating - 20 amp circuit breaker
C.System Configuration
Number of PV circuits 1
PV circuit 1 - 10 modules/inverters (15)amp breaker
2011 NEC Article 705.60(B)
vivint. .7C7 �(
D. Electrical Calculations
1.PV Circuit current
PV circuit nominal current 9 amps
Continuous current adjustment factor 125% 2011 NEC Article 705.60(B)
PV circuit continuous current rating 11.25 amps
2.Overcurrent protection device rating
PV circuit continuous current rating 11.25 amps
Next standard size fuse/breaker to protect conductors 15 amp breaker
Use 15 amp AC rated fuse or breaker
3.Conductor conditions of use adjustment(conductor ampacity derate)
a.Temperature adder
Average high temperature 38.4°C (101.12°F)
Conduit is installed 1"above the roof surface Add 22°C to ambient 2011 N6C Article 705.60(8)
Adjusted maximum ambient temperature 60.4°C (140.72°F)
b.PV Circuit current adjustment for new ambient temperature
Derate factor for 60.4 0C (140.72°F) 71% 2011 NEC Avicle 705.60(B)
Adjusted PV circuit continuous current 15.8 amps
c.PV Circuit current adjustment for conduit fill
Number of current-carrying conductors 3 conductors
Conduit fill derate factor 100% 2011 NEC Article 705.60(B)
Final Adjusted PV circuit continuous current 15.8 amps
Total derated ampacity for PV circuit 15.8 amps
Conductors (tag2 on 1-line)must be rated for a minimum of 15.8 amps
THWN-2 (90°C) #16AWG conductor is rated for 18 amps (Use#16AWG or target) 2011 NEC Article 705.60(6)
4.Voltage drop (keep below 3%total)
2 parts:
1.Voltage drop across longest PV circuit micro-inverters (from modules to j-box)
2.Voltage drop across AC conductors(from j-box to point of interconnection)
1.Mirco-inverter voltage drop: 0.18%
The largest number of micro-inverters in a row in the entire array is 6 inCircuit 1.According to
manufacturer's specifications this equals a voltage drop of 0.18%.
2. AC conductor voltage drop:
= I x R x D (-240 x 100 to convert to percent)
_ (Nominal current of largest circuit) x (Resistance of#16AWG copper) x (Total wire run)
_ (Circuit 1 nominal current is 9 amps) x(0.0050852) x (1 20D-(240 volts) x(100) 2.28%
Total system voltage drop: 2.46%
vivant. 5 o i H r
EcolibriumSolar
Customer Info
Name:
Email:
Phone:
Project Info
Identifier: 14243
Street Address Line 1: 1 McKinley Rd
Street Address Line 2:
City: Salem
State: MA
Zip: 01970
Country: United States
System Info
Module Manufacturer: Yingli Solar
Module Model: YL255P-29b
Module Quantity: 10
Array Size (DC watts): 2550.0
Mounting System Manufacturer: Ecolibrium Solar
Mounting System Product: EcoX
Inverter Manufacturer: Enphase Energy
Inverter Model: M215
Project Design Variables
Module Weight: 40.8 lbs
Module Length: 65.0 in
Module Width: 39.0 in
Basic Wind Speed: 110.0 mph
Ground Snow Load: 40.0 psf
Seismic: 0.0
Exposure Category: B
Importance Factor: II
Exposure on Roof: Partially Exposed
Topographic Factor: 1.0
Wind Directionality Factor: 0.85
Thermal Factor for Snow Load: 1.2
Lag Bolt Design Load - Upward: 820 Ibf
Lag Bolt Design Load - Lateral: 288 Ibf
EcoX Design Load - Downward: 493 Ibf
EcoX Design Load - Upward: 568 Ibf
EcoX Design Load - Downslope: 353 Ibf
EcoX Design Load - Lateral: 233 Ibf
Module Design Moment— Upward: 3655 in-Ib
Module Design Moment— Downward: 3655 in-Ib
Effective Wind Area: 20 ft2
Min Nominal Framing Depth: 2.5 in
Min Top Chord Specific Gravity: 0.42
EcolibriurnSolar
Plane Calculations (ASCE 7-10): roof 1
Roof Shape: Gable Edge and Corner Dimension: 3.0 ft
Roof Type: Composition Shingle Stagger Attachments: No
Average Roof Height: 30.0 ft Include Snow Guards: No
Least Horizontal Dimension: 12.0 ft
Roof Slope: 10.0 deg
Truss Spacing: 16.0 in
Snow Load Calculations
Description Interior Edge Corner Unit
Flat Roof Snow Load 33.6 33.6 33.6 psf
Slope Factor 1.0 1.0 1.0
Roof Snow Load 33.6 33.6 33.6 psf
Wind Pressure Calculations
Description Interior Edge Corner Unit
Net Design Wind Pressure Uplift -19.4 -31.9 -47.9 psf
Net Design Wind Pressure Downforce 11.4 11.4 11.4 psf
Adjustment Factor for Height and Exposure Category 1.0 1.0 1.0
Design Wind Pressure Uplift -19.4 -31.9 -47.9 1 psf
Design Wind Pressure Downforce 16.0 16.0 16.0 psf
ASD Load Combinations
Description Interior Edge Corner Unit
Dead Load 2.3 2.3 2.3 psf
Snow Load 33.6 33.6 33.6 psf
Downslope: Load Combination 3 6.1 6.1 6.1 psf
Down: Load Combination 3 34.9 34.9 34.9 psf
Down: Load Combination 5 11.9 11.9 11.9 psf
Down: Load Combination 6a 33.9 33.9 33.9 psf
Up: Load Combination 7 -10.3 -17.8 -27.4 psf
Down Max 34.9 34.9 34.9 psf
Spacing Results(Landscape)
Description Interior Edge Corner Unit
Max Allowable Spacing Between Attachments 52.2 52.2 52.2 in
Max Spacing Between Attachments With Rafter(rruss Spacing of 16.0 in 48.0 48.0 48.0 in
Max Cantilever from Attachment to Perimeter of PV Array 17.4 17.4 17.4 in
Spacing Results(Portrait)
Description Interior Edge Corner Unit
Max Allowable Spacing Between Attachments 31.3 31.3 31.3 in
Max Spacing Between Attachments With Rafterrrruss Spacing of 16.0 in 16.0 16.0 16.0 in
Max Cantilever from Attachment to Perimeter of PV Array 10.4 10.4 10.4 in
EcolibriumSolar
Layout
Skirt
e Coupling
O Clamp Warning: PV Modules may need to be shifted with respect to roof trusses to comply with
0 Bonding Jumper maximum allowable overhang.
EcolibriumSolar
Plane Calculations (ASCE 7-10): roof 2
Roof Shape: Gable Edge and Corner Dimension: 3.0 ft
Roof Type: Composition Shingle Stagger Attachments: No
Average Roof Height: 30.0 ft Include Snow Guards: No
Least Horizontal Dimension: 12.0 ft
Roof Slope: 34.0 deg
Truss Spacing: 16.0 in
Snow Load Calculations
Description Interior Edge Corner Unit
Flat Roof Snow Load 33.6 33.6 33.6 psf
Slope Factor 0.66 0.66 0.66
Roof Snow Load 22.2 22.2 22.2 psf
Wind Pressure Calculations
Description Interior Edge Corner Unit
Net Design Wind Pressure Uplift -20.7 -24.3 -24.3 psf
Net Design Wind Pressure Downforce 19.4 19.4 19.4 psf
Adjustment Factor for Height and Exposure Category 1.0 1.0 1.0
Design Wind Pressure Uplift -20.7 -24.3 -24.3 psf
Design Wind Pressure Downforce 19.4 19.4 19.4 psf
ASD Load Combinations
Description Interior Edge Corner Unit
Dead Load 2.3 2.3 2.3 psf
Snow Load 22.2 22.2 22.2 psf
Downslope: Load Combination 3 11.6 11.6 11.6 psf
Down: Load Combination 3 17.2 17.2 17.2 psf
Down: Load Combination 5 13.6 13.6 13.6 psf
Down: Load Combination 6a 22.1 22.1 22.1 psf
Up: Load Combination 7 -11.3 -13.4 -13.4 psf
Down Max 22.1 22.1 22.1 psf
Spacing Results(Landscape)
Description Interior Edge Corner Unit
Max Allowable Spacing Between Attachments 69.9 69.9 69.9 in
Max Spacing Between Attachments With Rafter/Truss Spacing of 16.0 in 64.0 64.0 64.0 in
Max Cantilever from Attachment to Perimeter of PV Array 23.3 23.3 23.3 in
Spacing Results(Portrait)
Description Interior Edge Corner Unit
Max Allowable Spacing Between Attachments 49.5 49.5 49.5 in
Max Spacing Between Attachments With RafterfTruss Spacing of 16.0 in 48.0 48.0 48.0 in
Max Cantilever from Attachment to Perimeter of PV Array 16.5 16.5 16.5 in
EcolibriumSolar
Layout
e _
Skirt
e Coupling
O Clamp Warning: PV Modules may need to be shifted with respect to roof trusses to comply with
0 Bonding Jumper maximum allowable overhang.
EcolibriumSolar
Distributed Weight (All Planes)
In Conformance with Solar ABC's Expedited Permit Process for PV System (EPP)
Weight of Modules: 408 lbs
Weight of Mounting System: 48 lbs
Total System Weight:456 lbs
Total Array Area: 176 ft2
Distributed Weight: 2.59 psf
Number of Attachments: 24
Weight per Attachment Point: 19 lbs
Bill Of Materials
Part Name Quantity
ECO-001_101 EcoX Clamp Assembly 24
ECO-001_102 EcoX Coupling Assembly 10
ECO-001_105B EcoX Landscape Skirt Kit 7
ECO-001-105A EcoX Portrait Skirt Kit 0
ECO-001_103 EcoX Composition Attachment Kit 24
ECO-001_109 EcoX Electrical Assembly 2
ECO-001_106 EcoX Bonding Jumper Assembly 4
ECO-001_104 EcoX Inverter Bracket Assembly 10
ECO-001338 EcoX Connector Bracket 10