9 WHEATLAND ST - BUILDING INSPECTION (2) >3 (4 - G
�1 -7 -:5 AVg0-3
The Commonwealth of Massachusetts
° Board of Building Regulations and Standards CITY OF
Massachusetts State Building Code,780 CMR SALEM
Revised Mar 2011
Building Permit Application To Construct,Repair, Renovate Or Demolish a
One-or Two-Family Dwelling
This Section For Official Use Only
Building Permit Nu be Date pplie
gill ding Official( nl N e) Sign ur ate
SECTION 1:SITE INFORMATION _
1 Property Address: 1.2 Assessors Map&Parcel Numbers
l.l a Is this an accepted street?yes x no Map Number Parcel Number
1.3 Zoning Information: 1.4 Property Dimensions:
Zoning District Proposed Use Lot Area(sq ft) Frontage(ft)
1.5 Building Setbacks(11)
Front Yard Side Yards Rear Yard
Required Provided Required Provided Required Provided
1.6 Water Supply:(M.QL c.40,§54) 1.7 Flood Zone Information: 1.8 Sewage Disposal System:
Public❑ Private❑ Zone: _ Outside Flood Zone?
Check if yes❑ Municipal❑ On site disposal system ❑
SECTION 2: PROPERTY OWNERSHIP'
2.1 Owner of Re rd:
�YIC�h nv 2a. A I A Salem MAk 0Q10
Name(Print) City,State,ZIP
��LDOA$(arlpl5t GjR'1u5i5 {��_ �c�l»c�S�
No.and Street Telephone marl Address
SECTION 3:DESCRIPTION OF PROPOSED WORK (check all that apply)
New Construction Existing Building❑ Owner-Occupied ❑ Repairs(s) ❑ Alteration(s) ❑ 1 Addition ❑
Demolition ❑ Accessory Bldg.❑ Number of Units_ I Other ❑ Specify:
Brief Description of Proposed Work: 5+VA p p
DbJa- v0kk-aiG Solar ySFpyyls -61- c2E Ac4
SECTION 4:ESTIMATED CONSTRUCTION COSTS
Item Estimated Costs:
(Labor and Materials Official Use Only
1.Building $ 0 )o 1. Building Permit Fee:$ Indicate how fee is determined:
2.Electrical $ 0 ❑Standard City/Town Application Fee
0' ❑Total Project Cost'(Item 6)x multiplier x
3.Plumbing $ 2. Other Fees: $
4.Mechanical (HVAC) $ List:
5.Mechanical (Fire
-Suppression) $ Total All Fees: $
Check No. Check Amount: Cash Amount:_
6.Total Project Cost: $ .� ❑Paid in Full ❑Outstanding Balance Due:
�( �VIP[UI�778r1 -- -,'0s
SECTION 5: CONSTRUCTION SERVICES
5.1Construction Supervisor License(CSL) 0 2_5 4 C8 1 2$ 9
�1
avve_s -=L�t?_I ryLa,r) License Number Exp ation ate
Name of CSL Holder
2 I �ka�Y\ S� ^� List CSL Type(see below) U
No.and Street �C" I Type Description
S`cL us I k 7A OI9 Q W U Unrestricted Buildings u to 35,000 cu.ft.)
City/1'0",Stas ZIP R Restricted 1&2 FamilyDwelling
M Masonry
RC RoofingCovering
WS Window and Siding
SF Solid Fuel Burning Appliances
�1�51�J fll.QS Y1 0 S�0Lar� VIVIV��p'Qf I Insulation
Telephone Email address COwI D Demolition
5.2 Registered Home Improvement Contractor(HIC)
\1o/IV± Solar �evelopeY lLC I-'o�ra18 t )
HIC Registration Number Expiration Date
HIC Com any Name or HIC R gistrant Name
'-Ia3Pet ?,oD V� . rnaso0-Jr vtVln-Fs0hVr
No.and Street
Pt OYO 1?I- `64100!4 1$1305301Q5 Email address tam
Ci /Town,State,ZIP Tele hone
SECTION 6:WORKERS'COMPENSATION INSURANCE AFFIDAVIT(M.G.L.c.152.§ 25C(6))
Workers Compensation Insurance affidavit must be completed and submitted with this application. Failure to provide
this affidavit will result in the denial of the Issuance of the building permit.
Signed Affidavit Attached? Yes ..........A No........... ❑ .
SECTION 7a:OWNER AUTHORIZATION TO BE COMPLETED WHEN
OWNER'S AGENT OR CONTRACTOR APPLIES FOR BUILDING PERMIT
1,as Owner of the subject property,hereby authorize VI V 1✓1t Sfl ICL.I—
to/acttt on my behalf,
in
all matters relative to work authorized by this building permit application.
t Print O er's Name
ame( rct rol1m(Rc
dig. mre) ate
SECTION 7b:OWNEW OR AUTHORIZED AGENT DECLARATION
By entering my name below,I hereby attest under the pains and penalties of perjury that all of the information
contained in th' p ' tion is true and accurate to the best of my knowledge and understanding.
V t OLr 2/2_&)4
Print O s r rind Agent's Name(Electronic Signature) Date
NOTES:
I. An Owner who obtains a building permit to do his/her own work,or an owner who hires an unregistered contractor
(not registered in the Home Improvement Contractor(HIC)Program),will not have access to the arbitration
program or guaranty fund under M.G.L.c. 142A.Other important information on the HIC Program can be found at
wLv .mass. oe v/oca Information on the Construction Supervisor License can be found at www.mass. ovg /dns
Z. When substantial work is planned,provide the information below:
Total floor area(sq.ft.) (including garage,finished basement/attics,decks or porch)
Gross living area(sq.ft.) Habitable room count
Number of fireplaces Number of bedrooms
Number of bathrooms Number of half/baths
Type of heating system Number of decks/porches
Type of cooling system Enclosed Open
3. "Total Project Square Footage"may be substituted for"Total Project Cost"
CERTIFICATE OF LIABILITY INSURANCE oA,E/2013 YYY)
111co
• THIS CERTIFICATE IS ISSUED AS A MATTER OF INFORMATION ONLY AND CONFERS NO RIGHTS UPON THE CERTIFICATE HOLDER. THIS
CERTIFICATE DOES NOT AFFIRMATIVELY OR NEGATIVELY AMEND, EXTEND OR ALTER THE COVERAGE AFFORDED BY THE POLICIES
BELOW. THIS CERTIFICATE OF INSURANCE DOES NOT CONSTITUTE A CONTRACT BETWEEN THE ISSUING INSURER(S), AUTHORIZED
REPRESENTATIVE OR PRODUCER,AND THE CERTIFICATE HOLDER.
IMPORTANT: If the certificate holder is an ADDITIONAL INSURED,the policy((es)must be endorsed. If SUBROGATION IS WAIVED,subject to
the terms and conditions of the policy,certain policies may require an endorsement. A statement on this certificate does not confer rights to the
certificate holder in lieu of such endomement(s).
PRODUCER CONTACT
MARSH USA INC. NAME:
122517TH STREET,SUITE 1300 vxONE Fax
IN rt AIC Not:
DENVER,CO 80202-5534 E11-ADDRESS:o
ABn:Denwe.cerrequest@mamh.com,Fax:212.948.4381
INSURE S AFFORDING COVERAGE MAID#
462738-STND-GAWUE-13-14 INSURER A:Evanston Insurance Company 35378
INSURED INSURER B:National Union Fire Insurance Goof PA
Vivint Solar,Inc.
4931 N 300 W INSURER C:New Hampshire Insurance Company 23841
Prow,UT 84604 INSURER D:
W SURER E
INSURER F
COVERAGES CERTIFICATE NUMBER: SEA-002368030-06 REVISION NUMBER:0
THIS IS TO CERTIFY THAT THE POLICIES OF INSURANCE LISTED BELOW HAVE BEEN ISSUED TO THE INSURED NAMED ABOVE FOR THE POLICY PERIOD
INDICATED. NOTWITHSTANDING ANY REQUIREMENT, TERM OR CONDITION OF ANY CONTRACT OR OTHER DOCUMENT WITH RESPECT TO WHICH THIS
CERTIFICATE MAY BE ISSUED OR MAY PERTAIN, THE INSURANCE AFFORDED BY THE POLICIES DESCRIBED HEREIN IS SUBJECT TO ALL THE TERMS,
EXCLUSIONS AND CONDITIONS OF SUCH POLICIES.LIMITS SHOWN MAY HAVE BEEN REDUCED BY PAID CLAIMS.
ILTR TYPE OF INSURANCE O L UBR POLICYNUMBER MMMIUDDYEFF M�"DDfYYYY LIMITS
A GENERAL LIABILITY 13PKGWED0274 11/01/2013 11/01/2014 EACH OCCURRENCE $ 1,654000
X COMMERCIAL GENERAL LIABILITY PIEM 50,000
PREMISES Ea occurrence $
CLAIMS-MADE F9 OCCUR - MED UP(Any one person) $ 5,000
PFR50NA1'.A ADV INJURY $ 1,000,000
GENERALAGGREGATE $ 2,000,000
GENL AGGREGATE LIMIT APPLIES PER: PRODUCTS-COMP/OPAGG $ 2,000,000
X POLICY PIPCTRP LOC $
B AUTOMOBILE LIABILITY 9701087 11/01/2013 11/01/2014 COMBINED SINGLE LIMIT 1
Ea weddem ,000,000
B X ANY AUTO 9701088 11/01/2013 11/01/2014 BODILY INJURY(Per person) S
ALL OS SCHEDULED BODILY INJURY(Par accident $
AUTOS AUTOS )
X HIREDAUTOS X AUTOSNON-O PROPERTY acedemDAMAGE $
8
A UMBRELLA LUM; X OCCUR 13EFXWE00088 11/0112013 11MV2014 EACH OCCURRENCE g 10,000,000
X EXCESS LUIB CLAIMS-MADE AGGREGATE $ 10,000,000
DELI RETENTION$ $
C WORKERS COMPENSATION 029342334; 029342335 11101n013 11101014 X I
N,CSTATU- OTH.
AND EMPLOYERS'LIABILITY
C ANY PROPRIETOR/PARTNEWEXECUTIVE Y/N 029342336; 029342337 11/01/2013 11/01/2014 1,000,000
FR
OFFICERIMEMBER EXCLUDED? Q N/A E.L.EACH ACCIDENT E
C (Mandatory In NH) 029342338 11101/2013 11101n014 E.L.DISEASE-EA EMPLOYE E 1,000,000
R DESC yes,tlescribe under 1,000,000
RIPTION OF OPERATIONS below E.L.DISEASE-POLICY LIMIT $
A Errors B Omissions 8 13PKGW00029 11/01/2013 11/01/2014 LIMIT 1,000,000
Contractors Pollution DEDUCTIBLE 5,000
DESCRIPTION OF OPERATIONS/LOCATIONS/VEHICLES (ANach ACORD 101,Additional RenarNa Schedule,K mom apace Is mqulmd)
he Certificate Holder and others as defined in the written agreement ale included as additional insured where required by written contract with respect to General Liability.This insurance is primary and non-
nt ibutory over any existing insurance and limited to liability arising out of the operators of the named insured and where required by written contract.Waiver of subrogation is applicable where required by written
ntract with respect to General Liability and Workers Compensation.
CERTIFICATE HOLDER CANCELLATION
City of Salem SHOULD ANY OF THE ABOVE DESCRIBED POLICIES BE CANCELLED BEFORE
93 Washington Street THE EXPIRATION DATE THEREOF, NOTICE WILL BE DELIVERED IN
Salem,MA 01970 ACCORDANCE WITH THE POLICY PROVISIONS.
AUTHORIZED REPRESENTATIVE
of Mamh USA Inc.
Kathleen M.Parsloe .{�x,((�.ic 1lt. fia,46—
01988-2010 ACORD CORPORATION. All rights reserved.
ACORD 25(2010/05) The ACORD name and logo are registered marks of ACORD
t' ? C 021 C.ot¢ton, l��
s.9P .SdttPCSPd9ll
BosPotMA ���14-2®1 7
44rww.mass.govIdia
NVorkers' Compensation Insurance Affidavit: Builders/Contractors[Electriciaus/Plumbers
Applicant Ianformation Please Print Legibly
Name (Business/Organization/Individual): Vivint Sour Developer, LLC
Address:4931 North 300 West
City/State/Zip:Provo, UT 84604 Phone#:801-704-9389
Are you an employer? Check the appropriate box: Type of project(required):
1.0 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.❑ 1 am a sole proprietor or partner- listed on the attached sheet. 7. ❑ Remodeling
ship and have no employees These sub-contractors have 8. ❑ 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 10.0 Electrical repairs or additions
3.❑ i am a homeowner doing all work officers have exercised heir 11.❑ Plumbing repairs or additions
No workers'
myself. kers' cam right of exemption per MGL
y [ P l2.❑ Roof repairs
insurance required.] t c. 152, §1(4), and we have no
employees. [No workers' l3.❑ Other
comp. insurance required.]
*Any applicant that checks box#lk must also fih out the section below showing their workers'compensation policy information.
r 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.
d am an employer that is providing workers'compensation insurance for my employees. Below is the policy and job site
information.
Insurance Company Name:New Hampshire Insurance Comany
Policy# or Self-ins. Lic. #:029342228 Expiration Dat(e::1'1-01-14
Job Site Address: q wll(wj l m�-/' �� City/State/Zip:�,(lQM IMPA pw—
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 a 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.
P do hereby cet under tlta paiM and penalties of perjury that the information provided above is true and correct.
�/ 3 �
Sign ature: %/ % Date
Phone #: 801-70 9889
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 5. Plumbing Inspector
6. Other
Contact Person: Phone#:
U&e cv c.�I%Gajjac (IjW4
Office of Consumer Affairs d Business Regulation
10 Park Plaza - Suite 5170
Boston, Massachusetts 02116
Home Improvement Contractor Registration
Registration: 170848
Type: Supplement Card
VIVINT SOLAR DEVELOPER LLC. Expiration: 1/5/2016
JAMES SHERMAN
4931 NORTH 300 WEST
PROVO, UT 84604
Update Address and return card.Mark reason for change.
son 1 G 20ra-0511t Address Renewal Employment Lost Card
Vlze U�Nn�mza�xuie�Ld�a�V�U[d1¢L�dGId
t
rice of Consumer Affairs&Business Regulation
License or registration valid for individul use only
ME IMPROVEMENT CONTRACTOR before the expiration date. If found return to:
Office of Consumer Affairs and Business Regulation
egistration: 170848 Type: 10 Park Plaza-Suite 5170
1/5/2016 Supplement Gerd Boston,MA 02116
VIVINT SOLAR DEVELOPER LLC.
JAMES SHERMAN r
4931 NORTH 300 WEST � _—
PROVO, UT 84604 Undersecretary Not valid without signature
}�f Massachusetts -Department of Public Safety
W Board of Building Regulations and Standards
C)nstrurtion Supci"i isor
License: CS-045254 --A
c
JAMES R WERMAN 1
81 MAIN ST
SAUGUS MA 01406
r
Expiration
Commissioner 08/28/2014
2781 Fries Mill Road,Williamstown,NJ 08094
Tel: 856.770.4473; rdcipolla@verizon.net
Vivint Solar February 26, 2014
24 Normac Road
Woburn MA, 01801
Attn: Mr. Paul Greene, Operations Manager
Re: Structural Assessment Report for Roof Mounted Photovoltaic (Solar)Panel
Installations—Valenzuela Residence,9 Wheatland Street, Salem,MA
AR# 3578827
Dear Paul:
We are providing you with this structural assessment report of Vivint Solar's photovoltaic (solar)
roof installations to be completed at the above referenced dwelling. The assessment criteria are
based upon Vivint's recent dwelling site visit including roof framing photographs and field
notes. We have also reviewed Vivint's PV Solar Permit Submittal, calculations, installation
layouts and notes, PV 1.0 "Site Plan", PV 2.0 "Roof Plan", and PV 3.0, "Mounting Details". All
were supplied for information on the proposed solar panels installation on the dwelling's roof
framing members for our assessment summary.
The dwelling is timber framed of older construction age with an"A" framed main roof, 4'- 3"+/-
high, built from nominal 2" x 4" full cut dimensional lumber joists at 21" +/- o/c, typical. There
is a low sloped attached rear roof assumed to be similarly framed and receiving solar panels. The
maximum roof joist span length is 15' — 9" +/- with no reductions for collar ties supports. Two
layers of roof shingles are assumed. Materials are assumed as minimum Hem-Fir #2 grade,
conservatively (low allowable stresses), with standard construction components (better grade
lumber may have been used). No collar ties are installed on the joists, below the 2" x 8" ridge
beam in the main "A" roofs'/attic's full length, in panel installations areas, for roof reinforcing.
There are 2" x 4" ridge beam supports at 30" to 62" o/c, the full length of roof posted down to
framing below. The main attic and roof framing were mostly accessible by access panels at the
site inspection and evaluation, so a complete assessment and confirmation of framing spacing,
sizes and condition was able to be performed for this roof. The rear roof received a partial
assessment due to lack of confirmed framing.
No architectural drawings were available at the time of this report preparation. Refer to plans
and documents prepared by Vivint for dwelling dimensions, locations and sizes of solar panel
units. The roof framing members were reviewed and checked for their capacity of new loadings.
A. CAPACITY OF EXISTING ROOF TO SUPPORT PROPOSED SOLAR PANELS:
1. Our assessment included using the proposed solar panels dead load that were given to
us in the ZEP calculation sheets and the live and dead loads described below. Our
review of the roof information shows that there are no visible undulations or
unevenness, indicating that the roof framing members are not visibly overstressed
or weakened by past heavy snow loads.
Mr. Paul Greene February 26, 2014 Page 2
2. Given the dwelling's roof construction and condition, the existing roof joists' load
carrying capacity will be able to carry the added dead and redistributed live loads from
the new solar panels if installed correctly. The dwelling's roof members will also
redistribute the snow live loads, and additional solar panels dead load to the adjacent
framing members. These additional loads should not produce stresses beyond the
allowable stress range for roof framing members assumed as Hem-Fir#2 materials.
Considering the low roof slopes, array sizes; full/limited access to confirm roof joists'
size, spacing, condition; posts and no collar ties, the panel supports shall be set/
attached to second joist for lateral installations over joists. No panel supports acin
shall be greater than two(2)roof joist spaces, or 44" +/- o/c to be shown in the PV
2.0 Roof Layout plan(s). Note—Layout Array Drawings#I and#2 submitted for
review, show this maximum panel support spacing, and need no spacing revisions.
The panel supports shall be installed in staggered patterns to ensure the proper load
distribution,and with no more than three supports placed on any single roof joist
except at ends of layouts. These layouts can be used for permit submittals and
installations, with the staggering of supports being done in the field.
All panels shall be installed as shown on the layout plans, with 44"+/- o/c maximum
support spacing, or two ioist spaces and staggered, to be shown in the final PV 2.0
Roof Layout plan(s), as stated above. Framing member sizes, spacing and condition
must be properly verified by Vivint's installers, prior to any installations. Send any
differing information to this engineer for review and approval, prior to continuing
with any installations.
3. This assessment meets current Massachusetts Building Code, 81'Edition—Residential
—Amendments to International Residential Code, (IRC), 2009 Edition, for one and
two family dwellings.
B. SOLAR PANEL ATTACHMENT TO ROOF STRUCTURE:
I. The solar panels shall be mounted in accordance with the latest"ZEP Company's
Code Compliant Installation Manual" found on the ZEP website and not included
herein. No additional reinforcing requirements are required for these installations.
However, if during solar panel installations, the roof framing members feel unstable,
or show interior or exterior evidence of minor or excessive movement,then this
engineer should be notified as soon as possible prior to proceeding with installations.
2. Vivint should notify the homeowners that long term build-up of accumulated snow in
the event of extreme snowfall conditions, may produce some roof deflections.
These deflections will be temporary in nature and will not affect the roof's structural
integrity. The solar panels do not need to be cleared of such accumulated snow.
C. WIND UPLIFT LOAD: F
1. Refer to attached ZEP calculation sheet for ASCEISEI 7-10 Minimum Design Loads
Mr. Paul Greene February 26, 2014 Page 3
For Buildings and Other Structures, for wind speed at this location of 100 miles per
hour* for Exposure Category `B", and 8 &23 degree roof slopes on dwelling's roof
areas. Ground snow load is 40 p.s.f.* for Exposure `B",Zone 1 (per ASCEISEI 7- 10)
of the roof's interior portion, and effective wind speed of 100 mph*, uplift is shown.
2. Total area subject to wind uplift is calculated for the Interior,Edge and Corner Zones.
A maximum and user selected support(foot) spacing is shown for each location zone.
D. PANEL ANCHORAGES:
1. Maximum allowable pullout per lag screw=235 #/inch from National Design
Standards(NDS)timber construction specifications for Hem-Fir -North lumber
(assumed). Using 4 lag screws, the pullout value is less than 235 #/inch of screw
thread and OK. Considering the variable factors for the existing roof framing
members, and installation tolerances, use a 2 ''/z"threaded depth with a minimum
5/16" lag screw per attachment points in roof joists ("rafters") components for panel
anchor mounts. This should give a sufficient factor of safety.
E. LIVE,DEAD AND SNOW LOADS:
1. Live load=40 p.s.f. ground snow load; 10 p.s.f. attic storage(trusses only)
Dead Load= 10 p.s.f-roofing/framing; 5 p.s.f. - panels, mounting hardware
Total Live Load=40 p.s.f.; Total Dead Load= 15 p.s.f.
2. These values are within acceptable limits of recognized industry standards for similar
structures. The roof members will be able to sustain the solar panel attachments without
damage, if installed in a workmanship like manner according to the above criteria.
We have based our structural capacity determination on applicable building codes, professional
engineering inspection and design experience, opinions and judgments. This report covers this
dwelling's assessment for only the areas for solar panel installations that were made according to
generally recognized structural analysis standards and procedures. The normal structural
engineering industry standard of care utilized for this type of work was used during this report
preparation. The assessments and recommendations in this report were reviewed to ensure a
proper level of quality and uniformity. This report adheres to accepted State and National
practices for current building code standards and can be used for construction purposes.
If you have any questions or require further information,please do not hesitate to contact
Respe ly sub e
Russell �. Cipolla, gist e o F Kjl/llY/1
Structural Engineer, Owner t cy
Mass. License No. EN-47478-5 RUSSELLD.
CIPOLLA
STRUCTURAL
* or as specified locally per the State Board of Bldg. Regs. and Stds., whichever go No.47478
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Vivint Solar - PV Solar Rooftop System Permit Submittal
1. Project Information
Project Name: Kristen Valenzuela
Project Address: 9 Wheatland St,Salem MA
A.System Description:
The array consists of a 4.75 kW DC roof-mounted Photovoltaic power system operating in parallel with the utility grid.There arc(19)
250-watt modules and (19)215-watt micro-inverters,mounted on the back of each PV module.The array includes(2)PV circuit(s).The
array is mounted to the roof using the engineered racking solution from Zep 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 OF (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 type: 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: Zep Solar
b.Product Name: ZS Comp
c.Total Weight of PV Modules and mounting hardware: 817 Ibs
d.Total number of attachment points: 33
e.Weight per attachment point: 24.75 Ibs/square foot
f.Maximum spacing between attachment points: *See attached Zep engineering talcs
g.Total surface area of PV array: 334.59 square feet
h.Array pounds per square foot: 2.44 Ibs/square foot
i.Distributed weight of PV array on roof sections:
-Roof section 1: (13)modules,(21)attachments 26.61 pounds per square foot
-Roof section 2: (6)modules,(12)attachments 21.5 pounds per square foot
vivW. solar
3. Electrical Components:
A. Module (UL 1703 Listed) Qty
Trina TSM 250-PA05.18 19 modules
Module Specs
Pmax-nominal maximum power at STC - 250 watts
Vmp-rated voltage at maximum power - 30.3 volts
Voe-rated open-circuit voltage - 37.6 volts
Imp-rated current at maximum power - 8.27 amps
Ise-rate short circuit current - 8.85 amps
B. Inverter (UL 1741 listed) Qty
Enphase M215-60-2LL-S22 19 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
1. Input Data (DC in)
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 2
PV circuit 1 - 10 modules/inverters (15) amp breaker
PV circuit 2 - 9 modules/inverters (15)amp breaker
vivint. solar
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 cC (101.12°F)
Conduit is installed 1"above the roof surface Add 22°C to ambient 2011 NEC Table 310.15(B)(3)(c)
Adjusted maximum ambient temperature 60.4°C (140.72°F)
b.PV Circuit current adjustment for new ambient temperature
Derate factor for 60.4°C (140.7VF) 71% 2011 NBC Table 310.15(8)(2)(a)
Adjusted PV circuit continuous current 15.8 amps
c.PV Circuit current adjustment for conduit fill
Number of current-carrying conductors 6 conductors
Conduit fill derate factor 80% 2011 NEC Table 310.15(B)(3)(a)
Final Adjusted PV circuit continuous current 19.8 amps
Total derated ampacity,for PV circuit 19.8 amps
Conductors (tag2 on 1-line)must be rated for a minimum of 19.8 amps
THWN-2(90°C) #14AWG conductor is rated for 25 amps (Use#14AWG or larger) 2011 NEC Table 310.15(B)(16)
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 2.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#14AWG copper)x(Total wire run)
Total system voltage drop: #
vivant. solar
2/2512014 3578827 roof 1-Zepulator
ZepSolar
Engineering Calculations
3578827 roof 1
Name: Street Address:9 Wheatland St.
Email: Suite/PO#:
Phone: City,Slate,Zip:Salem,Massachusetts 01970
Country:United States
System Details
Module Manufacturer Trina Solar Mounting System Zap Solar
PV Module TSW250-PA05.18 Manufacturer
Quantity of PV Modules 13 Mounting System Type ZS Comp
Array Size (kW) 3.250 Roof type Composition Shingle
Attachment Type Comp Mount,Type C
Module-level Enphase Energy-M215-Z
electronics
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2/25I2014 3578827 roof 1-Zepulator
Engineering Calculations
Design Variables
Description (Symbol) Value Unit
Module Orientation Portrait
Module Weight 44.8 Ibs
Average Roof Height(h) 30.0 ft
Least Horizontal Dimension(Ihd) 25.0 ft
Edge and Corner Dimension"a" 3.0 ft
Roof Slope(0) 23.0 deg
Rafter(f russ spacing 21.0 in
Rafter/Truss dimension Min.nominal framing member depth of 4"
Basic Wind Speed(V) 110 mph
E)posure Category B
Ground Snow Load(P9) 40 psf
Risk Category I
Topographic Factor(Kit) 1.0
Thermal Factor for Snow Load(Ct) 1.2
E)posure Factor for Snow Load(Ce) 0.9
Effective wind Area 10 ft2
Snow Load Calculations (Using calculation procedure of ASCE 7-10 Chapter 7)
Description(Symbol) Interior Edge Corner Unit
Flat Roof Snow Load(Pt) 24.2 24.2 24.2 psf
Slope Factor(Cs) 0.9 0.9 0.9
Roof Snow Load 20.7 20.7 20.7 psf
Wind Pressure Calculations (Using simplified procedure of ASCE 7-10 Chapter 27)
Description(Symbol) Interior Edge Corner Unit
Net Design Wind Pressure uplift(P,et30_up) -19.9 -34.7 -51.3 psf
Net Design Wind Pressure downforce(Pnet3o down) 12.5 12.5 12.5 psf
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Adjustment Factor for Height and Exposure Category(A) 1.0 1.0 1.0
Design Wind Pressure uplift(Wup) -19.9 -34.7 -51.3 psf
Design Wind Pressure downforce(W&wn) 16.0 16.0 16.0 psf
ASD Load Combinations (Using calculation procedure of ASCE 7-10 Section 2.4)
Description (Symbol) Interior Edge Corner Unit
Dead Load(D) 2.5 2.5 2.5 psf
Snow Load(S) 19.0 19.0 19.0 psf
Load Combination 1 (D+0.75"(0.6"Wdowu)+0.75'S) 22.7 22.7 22.7 psf
Load Combination 2(D+0.6Vdown) 11.9 11.9 11.9 psf
Load Combination 3(D+S) 19.9 19.9 19.9 psf
Uplift Design Load(0.6'D+0.6'Wup) -10.5 -19.4 -29.4 psf
Maximum Absolute Design Load(Pabs) 22.7 22.7 22.7 psf
Spacing Calculations
Description(Symbol) Interior Edge Corner Unit
Max allowable spacing between attachments 72.0 72.0 49.0 in
User selected spacing between attachments given a rafter/truss spacing of 21.0 in 42.0 63.0 42.0 in
Max cantilever from attachments to perimeter of PV array 24.0 24.0 16.0 in
Distributed Weight and Weight per Attachment Point Calculations (In conformance with Solar ABC's
Expedited Permit Process for PV System (EPP))
Description(Symbol) Value Unit
Weight of Modules 582.4 Ibs
Weight of Mounting System 51.13 Ibs
Total System Weight 633.53 Ibs
Total Array Area 228.97 ftZ
Distributed Weight 2.77 psf
Total Number of Attachments 21
Weight per Attachment Point 30.17 psf
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2/2512014 3578827 root 1-Zepulator
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2/2512014 3578827 roof 2-Zepulator
ZepSolar
Engineering Calculations
3578827 roof 2
Name: Street Address:9 Wheatland St.
Email: Suite/PO#:
Phone: City,Slate,Zip:Salem,Massachusetts 01970
Country:United States
System Details
Module Manufacturer Trina Solar Mounting System Zep Solar
PV Module TSM-250-PA05.18 Manufacturer
Quantity of PV Modules 6 Mounting System Type ZS Comp
Array Size (kW) 1.500 Roof type Composition Shingle
Attachment Type Comp Mount,Type C
Module-level Enphase Energy-M21 5-Z
electronics
http:/Av .zepulator.conitprcjmts/46652JsummarVengineering-print 1/4
2/25t2014 3578827 roof 2-Zepulator
Engineering Calculations
Design Variables
Description (Symbol) Value Unit
Module Orientation Landscape
Module Weight 44.8 Ibs
Average Roof Height(h) 30.0 ft
Least Horizontal Dimension(Ihd) 25.0 ft
Edge and Corner Dimension"a" 3.0 ft
Roof Slope(0) 8.0 deg
Rafter/Truss spacing 21.0 in
Rafter/Truss dimension Min.nominal framing member depth of 4"
Basic Wind Speed(V) 110 mph
Exposure Category B
Ground Snow Load(Pg) 40 psf
Risk Category I
Topographic Factor(Kit) 1.0
Thermal Factor for Snow Load(Ct) 1.2
Exposure Factor for Snow Load(Ce) 0.9
Effective wind Area 10 ft2
Snow Load Calculations (Using calculation procedure of ASCE 7-10 Chapter 7)
Description(Symbol) Interior Edge Corner Unit
Flat Roof Snow Load(Pf) 24.2 24.2 24.2 psf
Slope Factor(C.) 1.0 1.0 1.0
Roof Snow Load 24.2 24.2 24.2 psf
Wind Pressure Calculations (Using simplified procedure of ASCE 7-10 Chapter 27)
Description (Symbol) Interior Edge Corner Unit
Net Design Wind Pressure uplift(Pnet30_up) -19.9 -34.7 -51.3 psf
Net Design Wind Pressure dovmforce(Pnet30 down) 12.5 12.5 12.5 psf
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2I25/2014 3578827 roof 2-Zepulator
Adjustment Factor for Height and Exposure Category(A) 1.0 1.0 1.0
Design Wind Pressure uplift(WuP) -19.9 -34.7 -51.3 psf
Design Wind Pressure downforce(Wdown) 16.0 16.0 16.0 psf
ASD Load Combinations (Using calculation procedure of ASCE 7-10 Section 2.4)
Description (Symbol) Interior Edge Corner Unit
Dead Load(D) 2.5 2.5 2.5 psf
Snow Load(S) 24.0 24.0 24.0 psf
Load Combination 1 (D+0.75'(0.8'Wdown)+0.75"S) 27.5 27.5 27.5 psf
Load Combination 2(D+0.6'Wdown) 12.1 12.1 12.1 psf
Load Combination 3(D+S) 26.2 26.2 26.2 psf
Uplift Design Load(0.6'D+0.6'WPp) -10.4 -19.3 -29.3 psf
Maximum Absolute Design Load(Pab) 27.5 27.5 27.5 psf
Spacing Calculations
Description(Symbol) Interior Edge Corner Unit
Max allowable spacing between attachments 72.0 72.0 72.0 in
User selected spacing between attachments given a rafter/truss spacing of 21.0 in 42.0 63.0 63.0 in
Max cantilever from attachments to perimeter of PV array 24.0 24.0 24.0 in
Distributed Weight and Weight per Attachment Point Calculations (In conformance with Solar ABC's
Expedited Permit Process for PV System (EPP))
Description(Symbol) Value Unit
Weight of Modules 268.8 Ibs
Weight of Mounting System 25.75 Ibs
Total System Weight 294.55 Ibs
Total Array Area 105.68 ft2
Distributed Weight 2.79 psf
Total Number of Attachments 12
Weight per Attachment Point 24.55 psf
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EACH MODULE,ATTACHED SOCKET MEET THE REQUIREMENTS?
Open-Cinuit Voltage(Voc) 37.2 Volts
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RATING AT DISCONNECT. Maximum System Voltage 1000(IEC)1600(111 j
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MICROINVERTER CONNECTION , Signs(See Guide Section 7) 2.)Highest continuous ambient temperature based on ASHRAE highest month 2%dry bulb l
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