24 SABLE RD - BPA . I
IL\ 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 Oftic' I Use Only
Building Permit Number: Dat Applied:
Building Official(Print Name) Signature D e
SECTION 1:SITE INFORMATION
1.1 Property Address: In „ 1.2 Assessors Map& Parcel Numbers
I Y�f/
1.1 a Is this an accepted street?yes_ no Map Number Parcel Number
1.3 Zoning Information: .g 1.4 Property
p rty Dimensions.
Zoning District Proposed Use Lot Area(sq ft) Frontage(ft)
1.5 Building Setbacks(ft)
Front Yard Side Yards
Rear Yard
Required Provided Required Provided Required Proui[ied a
:n
CA m
1.6 Water Supply:(M.G.L c.4Q §54) 1.7 Flood Zone Information: 1.8 Sewage Disposal System .r
Public❑ Private❑ Zone: _ Outside Flood Zone? 70
Check if yes❑ Municipal❑ On site disposal stem Egr
SECTION 2: PROPERTY OWNERSHIP' r
2.1 Owner of Record: �� Vic
Lisa Dionne { 0Jg7 it
y
Name(Print) --<
' p (�„ At�
Qry,State, P
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No.and Street to rn
Telep one Email Address
SECTION 3: DESCRIPTION OF PROPOSED WORK2(check all that apply)
New Construct' xisting Building❑ Owner-Occupied ❑ Repairs(s) ❑ Alteration(s) ❑ Addition ❑
Demolition ❑ Accessory Bldg. ❑ Number of Units_ Other ❑ Specify:
Brief Description of Proposed Work':
SECTION 4:ESTIMATED CONSTRUCTION COSTS
Item Estimated Costs:
Labor and Materials Official Use Only
1. Building $ 0 U 1. Building Permit Fee:$ Indicate how fee is determined:
2.Electrical $ ❑ Standard City/Town Application Fee
❑Total Project Costa(Item 6)x multiplier x
3.Plumbing $
2. Other Fees: $
4.Mechanical QfVAC) $ List:
5.Mechanical (Fire
Suppression) $ Total All Fees:$
6.Total Project Cost: $ /� Check No. Check Amount: Cash Amount:
2inV 0 Paid in Full ❑Outstanding Balance Due:
SECTION 5: CONSTRUCTION SERVICES
5.1 Const unction S ervis icenssee/(CSL)
(IM, r r l�' 1 License Numb Expvation Date
Name f CSL Holder l
IU\ List CSL Type(see below)
No.an e t Type Description
U Unrestricted(Buildings up to 35,000 cu.ft.)
City/Town,State,ZIP \/1 a R Restricted 1&2 Family Dwelling
M Masonry
RC Roofing Covering
WS Window and Sidin
SF Solid Fuel Burning Appliances
(� I Insulation
Telephone Email address D Demolition
5.2 Reg qsmd H mg`—\I`mmDr�ovveement Contractor(HIC) 1
HIC Compan Name HIC Registration umber Expirati n Date
yj]Iptu@�or(I i r
No.and Street rn'l 11PU Email address
City/Town,Stat ,ZIP /�I 'fele 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 .......... 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 Vivint Solar
to act on my behalf, in all matters relative to work authorized by this building permit application.
^ , N� 4-15-2015
Print Owner's Name(Electronic Signature) Date
SECTION 7b:OWNER[ 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 this applic ' n is t to and accurate to the best of my knowledge and understanding.
Print Owner's or Authorized ent's Name(Electronic Signature) Date I
NOTES:
I. An Owner who o tains a but
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.eov/oca Information on the Construction Supervisor License can be found at www.mass.eovidns
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"
L
wougni solar g
3301 North Thanksgiving Way Suite 500
Structural Group Lehi.UT84043
P: (801)234-7050
Scott E. Wyssling, PE
Head of Structural Engineering scott.wyssling@vivintsolar.com
April 20, 2015
Mr. Dan Rock, Project Manager
Vivint Solar
24 Normac Road
Woburn MA 01801
Re: Structural Engineering Services
Dionne Residence
24 Sable Rd, Salem MA
S-4230956
Dear Mr. Rock: 5.5 kW System
Pursuant to your request, we have reviewed the following information regarding solar panel installation on
the roof of the above referenced home:
1. Site VisitfVerification 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:
• Section 1 (Main House): 2 x 6 dimensional lumber at 16" on center with 1 x 8 collar ties every
32". The attic space is unfinished and photos indicate that there was free access to visually
inspect the size and condition of the roof rafters.
• Sections 2 and 3 (Front Main): Assumed 2 x 6 dimensional lumber at 16" on center.The attic
space is finished and photos indicate that there was no 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 90 mph based on Exposure Category "B" and
22, 23 and 30 degree roof slopes on the dwelling areas. Ground snow load is 50 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.
bibont. solar
Page 2 of 2
B. Loading Criteria
• 10 PSF= Dead Load roofing/framing • 50 PSF=Live Load(ground snow load)
• 5 PSF= Dead Load solar oanels/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.
Ve trulyyours, tHOF
I �
CIVI N
Scott E.Wyssl PE 50
MA License N .50 9a FGIgTEQ�
FFSSIONN.
dibint. solar
24 Sable Rd , Salem MA 01970 a
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EcolibriumSolar
Layout
Skirt
v Coupling Note: If the total width of a continuous array exceeds 35 ft, break array to allow for thermal
O Clamp expansion and contraction. See Installation Guide for details.
Warning: PV Modules may need to be shifted with respect to roof trusses to comply with
Bonding Jumper maximum allowable overhang.
EcolibriumSolar
Layout
a �� r
Skirt
e Coupling Note: If the total width of a continuous array exceeds 35 ft, break array to allow for thermal
O Clamp expansion and contraction. See Installation Guide for details.
Warning: PV Modules may need to be shifted with respect to roof trusses to comply with
Bonding Jumper maximum allowable overhang.
EcolibriumSolar
Roof Weights
In Conformance with Solar ABC's Expedited Permit Process
Module Quantity: 7
Weight of Modules: 287 Ibs
Weight of Mounting System: 122 Ibs
Total Plane Weight: 409 Ibs
Total Plane Array Area: 123 ft2
Distributed Weight: 3.32 psf
Number of Attachments: 61
Weight per Attachment Point: 7 Ibs
EcolibriumSolar
Layout
577071
Skirt
e Coupling Note: If the total width of a continuous array exceeds 35 ft, break array to allow for thermal
O Clamp expansion and contraction. See Installation Guide for details.
Warning: PV Modules may need to be shifted with respect to roof trusses to comply with
Bonding Jumper maximum allowable overhang.
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