B-17-789 - 0012 BARNES CIRCLE - Building Permit DocuSign Envelope ID.'CFFF61BD-F076-496A-8FD6-05A66EDEE858
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The Commonwealth of Massachusetts
Board of Building Regulations and Standards CITY OF
Massachusetts State Building Code,780 CMR SA6E9A
�..._,". Revised Aff 20/111
Building Permit Application To Construct, Repair, Renovate Or Demolish a -
One-or Two-Family Dwelling `
This Section For Offici se Only N r �
Building Permit Number: Date pplied: r
Building Official(Print Name) Signature Date
t
SECTION 1:SITE INFORMATION' j- s ,-
1.1 ProvertV Addres • C i 1.2 Assessors Map& Parcel Numbers
Lla 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 R) Frontage(ti)
1.5 Building Setbacks(ft)
Front Yard Side Yards Rear Yard
Required Provided Required Provided Required Provided
L6 Water Supply:(M.G.L c.40,§54) L7 Flood Zone Information: 1.8 Sewage Disposal System:
Public❑ Private❑ Zone: i Outside Flood Zone?Check ifyes❑ Municipal❑ On site disposal system ❑
SECTION 2: PROPERTY OWNERSHIP'
2.1 Owner'of Record:
Robert Teague
;i �ame,{�P t� City,State,ZIP
No.and Street "Telephone Email Address
SECTION 3: DESCRIPTION OF PROPOSED WORK2(check all that apply)
New ConstructioNl:f' Existing Building❑ Owner-Occupied ❑ Repairs(s) ❑ Alteration(s) ❑ Addition ❑
Demolition ❑ 'Accessory Bldg. ❑ Number of Units Other ❑ Specify_
Brief csVription of Proposed Wo
SECTION 4: ESTIMATED CONSTRUCTION COSTS -
Item Estimated Costs:.
(Lab(r and aterials) Official Use Only
1.Building $ I. Building Permit Fee:$ Indicate how fee is detennined:
❑Standard City/Town Application Fee
2.Electrical a 2-LPQ
❑Total Project Cost'(Item 6)x multiplier x
a.Plumbing $ 2. Other Fees: $
4. Mechanical (HVAC) $ List:
5.Mechanical (Fire $
Suppression) Total All Fees:
6.Total Project Cost: $
(�. Check No. Check Amount: Cash Amount:
�j 0 Paid in Full 0 Outstanding Balance Due:
T.
DocuSign Envelope ID:CFFF61BD-F076-496A-8FD6-05A66EDEE858
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SECTION 5: CONSTRUCTION SERVICES
5.1 Construction Supervisor License(CSL) �kjlk
' License Number Expiration I le
Na E
List CSL Type see below— P
ll
No.at trect Type Description
U Unrestricted(Buildings up to 35.000 cu.ft.)
— Ay` �� t R Restricted 1&2 FamilyDwelling
CityfI0%;w Statc.Xll' M._ Masonry
RC- Roofing Covering
WS Window and Siding
SF Solid Fuel[turning Appliances
��1d1�,w.16.(-01 1, Insulation
Telephone Email address D - Demolition
5.2 Registered home Improvement Contractor(HIC) -7/t
�� 'r1 j U _y _ I�iS1-
)L 1A �G ( li[C Registration Number hxpiration Datc
IfIC Company Nat r.l11IC R istrain Name;, ,. �/ p
No.and Street t C L �h:oe �2 mv—ln ,
1 Email address
Ci /Town,Stale,ZIP 7 ele one
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 .........C-' No...........❑
SECTION 7a:OWNER AUTHORIZATION TO BE COMPLETED WHEN
OWNER'S AGENT OR CONTRACTOR APPLIES FOR BUILDING PERMIT
1
r
1,as Owner of the subject property,hereby authorize
to act on my behalf,in all matters relative to work authorized by this building permit application.
August 17, 20171 5:02 M MDT
.Print Owner.'s:Name(Electromc Signalurc) Date - ,
SECTION 71b: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 understanding12-1
Anit �+4ier s or Aulhuried Agent' Name(Electronic 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
www,mass.gov/oca Information on the Construction Supervisor License can be found at www.mnssw/dam
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
3. "Total Project Square Footage"may be substituted for"Total Project Cost"
lli' owo l So l a r 1800 W Ashton Blvd.
��JJ �J Lehi, UT 84043
Structural Group
Jon P. Ward, SE, PE J. Matthew Walsh, SE, PE Clint C. Karren, PE
Structural Engineering Manager Senior Structural Engineering Manager Structural Engineering Manager
jon.ward@vivintsolar.com james.walsh@vivintso/ar.com clint.karren@vivintsolar.com
August 21, 2017
Re: Structural Engineering Services
Teague Residence
12 Barnes Cir, Salem, MA
S-5797900; MA-01
To Whom It May Concern:
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 representative from our office under my supervision identifying
specific site information including size and spacing of members for the existing roof structure.
2. Proposed layout of the system including connection details for the solar panels.
3. 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:
A. Description of Residence:
The existing residence is typical wood framing construction with a maximum of two layers of composite shingle
roofing. All wood material utilized for the roof system is assumed to be Spruce-Pine-Fir#2 or better with standard
construction components and consists of the following:
• Roof Section 1: Dimensional lumber - 2x6 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 members. The
interior horizontal length of the rafter used for design verification is 17.11' with an additional 1.33' eave.
Based on the span of the existing rafters for this roof section, a structural upgrade is required to
strengthen the roof system. Select from options presented in paragraph C below, and locate the
upgrade between 4.5'and 12.5'from the ridge.
• Roof Section 2: Dimensional lumber - 2x6 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 members. The
interior horizontal length of the rafter used for design verification is 17.11' with an additional 1.33' eave.
Based on the span of the existing rafters for this roof section, a structural upgrade is required to
strengthen the roof system. Select from options presented in paragraph C below, and locate the
upgrade between 4.5'and 12.5'from the ridge.
B. Loading Criteria
9.13 PSF= Dead Load (roofing/framing)
2.59 PSF= Dead Load (solar panels/mounting hardware)
11.72PSF=Total Dead Load
20 PSF= Roof Live Load
40 PSF=Ground Snow Load (based on local requirements)
Wind speed of 100 mph (based on Exposure Category B-the total area subject to wind uplift is calculated for the
Interior, Edge, and Corner Zones of the dwelling.)
I
Page 1of2 n/Jon/uni solar
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Page 2 of 2
C.Approved Structural Upgrade Options
The method of strengthening the roof shall be determined by the Licensed Construction Supervisor(CSL) under my
direction and based on actual field conditions such as access to the attic and location of load bearing walls, and
shall be chosen from the following options-
1. Knee wall or purlin constructed of either 2x4's or 2x6's with top and bottom plates attached to the rafters
and attic joists respectively, shall be built in the attic. The top plate of the support shall be as described.
above. The bottom plate shall be within 12" of a parallel load bearing wall below the attic. The maximum
permitted angle of the knee wall or purlin struts shall be 45 degrees from vertical.
2. Full length sistered rafters shall be installed from the ridge to the exterior wall same size as the existing
rafters. The sistered rafters shall have 2 rows of 10 penny nails or #8 x 2 1/2" wood screws at 18" on
center. The rows shall be staggered by 9". One splice in the new rafter may be permitted if plywood
mending plates (min 24" in length) are installed on both sides of the rafter with 3/8" carriage bolts.
Minimum of 2 bolts are required on both sides of the butt joint with construction adhesive utilized.
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 (www.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 11/2'thick and mounted 41/2" off the roof for a total height off the existing roof of 6 At no
time will the panels be mounted higher than 6"above the existing plane of the roof.
3. Maximum allowable pullout per lag screw is 205 Ibs/inch of penetration as identified in the National Design
Specifications (NDS) of timber construction specifications for Spruce-Pine-Fir. Based on our evaluation, the
pullout value, utilizing a penetration depth of 21/2", is less than the maximum allowable per connection and
therefore is adequate.
4. The maximum allowed spacing was calculated for the Wind Speed shown in paragraph B above, using the wind
load uplift procedures of ASCE 7-10 and is specified below. The following values have been verified by in-
house testing and the mounting hardware manufacturers' data, which are available upon request. Panel
support connections shall be staggered to distribute load to adjacent members.
Modules in Landscape Modules in Portrait
Roof Zone Interior Ede Corner Interior Ede Corner
Max'Vertical Spacing in 40 40 40 66 66 66
Max Horizontal Spacing in 64 64 64 48 48 48
Max Uplift Load Ibs 159 131 125 268 221 210
E. Summary
Based on the above evaluation,with the structural upgrade installed as prescribed and appropriate panel anchors
being utilized,the roof system designed on will adequately support the additional loading imposed by the solar
panels, if installed correctly. This evaluation is in conformance with the 2009 International Residential Code with
Massachusetts Amendments, current industry standards and practice, and the information supplied to us at the time
of this report.
If there are any questions regarding the above, or if more information is required, please contact me.
AAA.
OF a
Regards,
N P SG i
Jon P. Ward, SE, PE AR
MA License No. 52584 " NO. 525
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