18 SABLE RD - BUILDING INSPECTION CK
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The Commonwealth of Massachusetts L SER ICES
Board of Building Regulations and Standards CITY OF
Massachusetts State BuildingCode 780 CMR 1�� y�
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Building Permit Application To Construct, Repair, Renovate Or Demolish a 58
One-or Two-Family Dwelling
This Section For Official Use Only
Building Permit Number: IDate App ' d:
Building Official(Print Name) Signature Date
SECTION 1:SITE INFORMATION
Ll Property Address: 1.2 Assessors Map&Parcel Numbers
L l a Is this an accepted street?yes no Map Number Parcel Number
1.3 Zoning Information: 1.4 Property Dimensions:
Zoning District Proposed Use Lot Area(sq fl) Frontage(Q)
1.5 Building Setbacks(ft)
Front Yard Side Yards Rear Yard
Required Provided Required Provided Required Provided
1.6 Water Supply:(M.G.L c.40,§54) 1.7 Flood Zone Information: 1.8 Sewage Disposal System:
Public❑ Private❑ Zone: _ Outside Flood Zone? Municipal❑ On site disposal system ❑
Check if yesO
SECTION 2: PROPERTY OWNERSHIP'
2.1 Owner'ofRecordJameS O'Brien Salem, MA. 01970
Name(Print) 18 Sable rd 978.835''2y24"J9P Lobrienl8@aol.com
No.and Street Telephone Email Address
SECTION 3:DESCRIPTION OF PROPOSED WORK'(check all that apply)
New Construction❑ Existing Building❑ Owner-Occupied ❑ Repairs(s) ❑ I Alteration(s) ❑ 1 Addition ❑
Demolition ❑ Accessory Bldg. ❑ Number of Units_ Other ❑ Specily:
Brief Description of Proposed Work':
S
SECTION 4: ESTIMATED CONSTRUCTION COSTS
Item Estimated Costs:
Labor and Materials Official Use Only
I.Building $ I. Building Permit Fee:$ Indicate how fee is determined:
2.Electrical $4 ❑Standard City/Town Application Fee
❑Total Project Cost'(Item 6)x multiplier x
3.Plumbing $ 2. Other Fees:
4.Mechanical (FiVAC) $ List:
5.Mechanical (Fire
Su ression) $ Total All Fees:$
C\ Check No._Check Amount: Cash Amount:_
6.Total Project Cost: $ 2) J v 0 Paid in Full 0 Outstanding Balance Due:
SECTION 5: CONSTRUCTION SERVICES
5.1 Construction Supervisor License(CSL) ql_ 21 to
Jwit 1 1J.S S1 2 y"(Y_�n License Number' Expiration Date
Name of CSL Holder
UF • , �V\,a-.L) 'e A List CSL Type(see below) U
No.and Street CN` Type Description
�� L �,� , r p n- n. 0\(HU� U Unrestricted(Buildings u to 35,000 cu.ft.
/lN' t I IJUI '"t R Restricted 1&2 FamilyDwelling
City/Town,State,ZIP M Mason
ry
RC Roofing Covering
WS Window and Siding
���1^\_ ��n� SF Solid Fuel Burning Appliances
7 F5)�1�5lVW✓ ( AMS(1�ym(a%\) lr?F \Cw I Insulation
Telephone Email address D Demolition
5.2Regiis'tered Home Improvement Contractor(HIC)
\r \Ih1110
"\ `� `nt C}`()`r "���H1C RegisGatinn Number Expiration Dale
HIC Comq�y1N,am�r IC Regis nt Name
No.anQ-$�''tllrePe�Jr-J``u- U,C Ssq y� 2 ,�,I I�x. . Email address
City/Town,State,ZIP t 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 f 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 y)V\Y)t S6\cky-
to act on my behalf,in allo atters relative to work authorized by this building permit application.
l " 04/18/15
Print Owner's RAme(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 application is true and accurate to the best of my knowledge and understanding.
4_,C
Print Owner's or Authorized Agent' a(Elec nic Signature) Date
NOTES:
1. 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
wtivw.mass.eovloca Information on the Construction Supervisor License can be found at www.mass. is
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"
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Structural Group Lehi, UT 84043
P: (801)234-7050
Scott E. Wyssling, PE
Head of Structural Engineering scoff.wyssfing@vivintsolar.com
May 14, 2015
Mr. Dan Rock, Project Manager
Vivint Solar
24 Normac Road
Woburn MA 01801
Re: Structural Engineering Services
Obrien Residence
18 Sable Rd, Salem MA
S-4230854
Dear Mr. Rock: 16.75 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 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 two attic section(s):
• Roof Sections 1 and 2 (Main House): Roof section is composed of 2x6 dimensional lumber at 16"
on center with 1 x6 collar ties every 32"with an interior support wall 11'-0"from the ridge.
• Roof Section 3 (Main House (back)): Roof section is composed of assumed 2x6 dimensional
lumber at 16" on center. This attic space is finished and the photos indicate that there was no
access to visually inspect the size and condition of the roof rafters.
The attic space is unfinished and the photos indicate that there was free access to visually inspect the size and
condition of the roof rafters, unless otherwise indicated above. 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
17 and 21 degree roof slopes on the dwelling areas. Ground snow load is 40 PSF for Exposure
"B", Zone 2 per(ASCE/SEl7-10).
2. Total area subject to wind uplift is calculated for the Interior, Edge and Corner Zones of the
dwelling.
vivant. solar
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 and in
accordance with the 2009 International Residential Code. 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, it installed correctly.
C. 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 or deflect non-
uniformly, our office should be notified before proceeding with the installation.
2. The solar panels are 1 1/2"thick and mounted 4 Yz"off the roof for a total height off the existing roof
of 6". At no time will the panels be mounted higher that 6"above the existing plane of the roof.
3. 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
MY, is less than the maximum 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
MY with a minimum size of 5/16" lag screw per attachment point for panel anchor mounts will be
adequate with a sufficient factor of safety.
4. 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.
5. Panel supports connections shall be staggered to distribute load to adjacent rafters.
Based on the above evaluation, with appropriate panel anchors being utilized the roof system will adequately support
the additional loading imposed by the solar panels. This evaluation is in conformance with the 2009 International
Residential Code, current industry standards and practice, and based on information supplied to us at the time of
this report.
Should you have any questions regarding the above or if you require further information do not hesitate to contact
me.
Ve truly yOUfS, 2� �G
�P. CIVt
Scott E. Wyssli PE . � �
MA License No. 505 90oF SOONA P
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