24 BARNES CIR - BPA-14-1650 SOLAR PANELS r.
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The Commonwealth of Massachusetts
Board of Building Regulations and Standards CITY OF
Massachusetts State Building Code,780 CMR SALEM
Revised.Mar 2011
Building Pennil Application To Construct, Repair, Renovate Or Demolish a
One-or Two-Family Dwelling
This Section For Off ial Use Only
Building Permit Number: D e Applied:
ltas,
Building Official(Print Name) Signature VDate
SECTION l:SITE INFORMATION
1.1 ro,perty�ddrgss �� n n^^ 1.2 Assessors Map&Parcel Numbers
L la Is this an accepted street?yesl XX Into Map Number Parcel Number
1.3 Zoning Information: 1.4 Property Dimensions:
Zoning District Proposed Use Lot Area(sq @) Frontage(fl)
1.5 Building Setbacks(R)
Front Yard Side Yards (tear Yard -
Required Provided Required Provided Required Provii
1.6 Water Supply:(M.G.L c.40,§54) 1.7 Flood Zone Information: 1.8 Sewage Disposal System:
Zone: Outside Flood Zone? €.,1.
Public❑ Private❑ — Check ifyes❑ Municipal❑ On site disposal systetaft ❑ .fK1
SECTION 2: PROPERTY OWNERSHIP' rrn
2.1 Owner of Record: Kevin Doherty
Name(Pri City,State,ZIP N Barnes Circle 978-745-9298 Roirochelle@hotmail.c•'�om ,C),,.
No.and Street Telephone Email Address
SECTION 3:DESCRIPTION OF PROPOSED WORK(check all that apply)
New Construction tK Existing Building❑ Owner-Occupied ❑ Repairs(s) ❑ Alteration(s) ❑ 1 Addition ❑
Demolition ❑ Accessory Bldg.❑ Number of Units_ Other ❑ Specify:
Brief Description of Proposed Work:
o}pV }0.1G Sol0.r
G(-
SECTION 4:ESTIMATED CONSTRUCTION COSTS
Item Estimated Costs: Official Use Only -
(Labor and Materials)
I.Building S I. Building Permit Fee:$ Indicate how fee is determined:
2.Electrical g a d ❑Standar d City/Town Application Fee
❑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: $2 ,� 0 Paid in Full 0 Outstanding Balance Due:
SECTION 5: CONSTRUCTION SERVICES
5.1 Construction Supervisor License(CSL) 0�5 25 4
�me-s Slnerrv -a-r) License Number Exp anon ate
Name of CSL Holder
List CSI.Type(see below) U
No.and Street Type Description
CS , U B
"l Dici (Buildings u to 35,000 cu.ft.
R Restricted 1&2 FamilyDwellingit/Tow �
M Mason
RC Roofin Coverin
WS Window and Siding
,�/,,�� I Solid Fuel Burning Appliances
11/InlW01l1r yIUL'
•p�U�(xl' Insulation
Tele hone Email address r`'1 D Demolition
5.2 Registered Home Improvement Contractor(HIC)
���[ y �p t—lO�s4$ �5 1�4
---`r—Turin,\�ar `�eye-1 L�"C' HIC Registration Number Ekpirat on Date
HLI Cgnri�Nai�bH)IIC. Rggislranl Name
W 'r'v�CLSo ILu'c�J v iv tvLkSo r
No.and Stt Email address (wvt
�DVOree Ur $t}IOOL} -l$13053o1¢S
City/Town,State,ZIP Telephone
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.........� No...........0
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 IVIt SID IQV'
to act on my behalf,in all matters relative to work authorized by this building permit application.
10/8/14
Print Owner's Name(Electronic SignatureY Date
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' pl lion is true and accurate to the best of my knowledge and understanding.
Print Owt -s )r rized 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
www.mass.gov/oca Information on the Construction Supervisor License can be found at www.mass.gov/dR
2. 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''
4931 North 300 West
Structural Group Provo,UT84604
Scott E. Wyssling, PE P: (801)234-7050
Head of Structural Engineering scoff.wysslingca vivintsolar.com
October 9, 2014
Mr. Dan Rock, Project Manager
Vivint Solar
24 Normac Road
Woburn MA 01801
Re: Structural Engineering Services
Ely Residence
24 Barnes Circle, Salem MA
5-4017053
5.865 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 2 x 10 dimensional
lumber at 16" on center. The attic space is unfinished and photos indicate that there was free 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 23 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.
Page 2 of 2
B. Loading Criteria
10 PSF=Dead Load roofing/framing 40 PSF=Live Load (around 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 Ibs/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, tH OF AM
Air- *O kk)
Scott E. Wy ling, avi
MA License No.
9pF, EcISTEQ'�c
FSSIONA-
24 Barnes Cir, Salem MA 01970
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MA LICENSE:MAHIC 170848 v v U U u. 24 Bames Cir
PLAN DRAWN BY Laura 4 AR 4017053 asi Motlifed:10/812014 UT,L,TYACCOUNTNUMBER: 13276-43015
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Inverter Ratings(Guide Section 4)
mvadar MakelMOdal Enphase M215,504TL-sex-PC 0 Conduit and Conductor Schedule
MODULE DETAIL Max DC Von Rating 45 Volm Top pr:elprian Wlre Gao9e xntcwdmnra Candun Type Conduit Size
Max POWer Ag 40-C 215 Wafts 1 Enionaseengeg.cri THAN-2 +2 A'A'G 4 Lad WA-Free Nr
Nominal AC VdWge 240 VOID M
Vingli Energy YL255P-29b Max AC Curren 09 Amps 1 Bare Capper Gmund cGC/GEC) 6AWG 1 NIA-0ree Air NrA-Free Air /F,
SOLAR MODULE Max OCPD Rating 20 Ampa 2 THWN-2 10AWC 6 PVC 0'"P' (D r^
Max Number of PanelarCirail if 2 THI 6AWG PVC 0'-Y I _
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NOTES FOR INVERTER CIRCUITS(Guide Spotted 8 antl 9). a THWW2 6AWG s pvc 6'-1'
—3—THWN-2.count 6AWG _, _ PVC 0't" VUDm
1.)IF UTILITY REQUIRES A VISIBLE-BREAK SWITCH,DOES THIS PV Q
Enphase M215S60-2LL-S2x-ZC SWITCH MEET THE REQUIREMENTS? Module a Ings(a to I L;tuunabe bection E Z
Model MekelMould Yingli Energy YL255P-29bas
MICRO-INVERTER AT YES NO xrvA Max Power-Poim Current(Imp) a.32 Amps //��//m dz
EACH MODULE ATTACHED 2J IF GENERATION METER REQUIRED,DOES THIS METER Max Power-Point Voltage(Ver J0.6 Volta XJ Ped vo
WITH ECO HARDWARE SOCKET MEET THE REQUIREMENTS? U
Open-Cimuit Voltage Noc) 38.7 Volts
YES NO XNA Short-Cirr.Vit Current(Ise) 8.88 AMPS ^ Q
3.I SIZE PHOTOVOLTAIC POWER SOURCE(OC)CONDUCTORS Max Series Fuse(OCPD) 15 AmpS w
BASED ON MAX CURRENT ON NEC 690,53 SIGN OR OCPD Nominal Maximum Power at STC(Pmex) 255 Walls -I
MICROINVERTER CONNECTION RATING AT DISCONNECT. Maximum System Voltage 1000(IECy600(UL) j
TO ENGAGE TRUNK CABLE L)SIZE INVERTER OUTPUT Act CONDUCTORS ACCORDING Von Temperature CoeRaient
^ TO INVERTER OCPD AMPERE RATING(Sao Guide Salomon 9).
V SJ TOTAL OF 2 INVERTER Depots,ONE FOR EACH NOTES FOR ARRAY CIRCUIT WIRING(Guide Section 6 and 8 and Appendix DI,
PV CIRCUIT.DOES TOTAL SUPPLY BREAKERS COMPLY
WITH 120%BUSPAR EXCEPTION IN 1.)Lowest expected ambient temperature based on ASHRAE minimum mean extreme
NEC 690641B)(2)(e)9 XYES NO dry bulb temperature for ASHRAE location most similar to installation location: -19-C
IY6 BARE CU GROUND -
(GROUNDINGARRAV) Signs(See Guide Section 7) 2.)Highest rontinuous ambient temperature based on ASHRAE highest month 2%dry bulb _
temperasm for ASHRAE Imation 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
United States(Palm Springs,CA is 44.1°C).For less than 9 current-carrying conductors
Solar PV System AC Point of Connection in mof-mounted sunlit conduit at least 0.5"above roof and using the outdoor design
AC Output Cum mt 1 2000000 Amps temperature of 47-C or less(all of United Shales). •
Nominal AC Voltage 1 2401 Vote a)12 AWG,90-C conductors are generally acceptable for modules with lso of 7,68 Amps <
or less when protected by a 12-Amp or smaller fuse. w
THIS PANEL FED BY MULTIPLE SOURCES b,)10 AWG,90"C conductors are generally acceptable for modules with lsc of 9.6 Amps
(UTILITY AND SOLAR) or lass when protectedb a 15-Amp or smaller fuse. is
NOTE:NEUTRAL CONDUCTOR(S)OMITTED FOR CLARITY a
ALL INVERTER OUTPUT CIRCUITS WILL HAVE A NEUTRAL CONDUCTOR Oil
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