HomeMy WebLinkAboutBuilding Permit #83-16 - 531 JOHNSON STREET 7/21/2015-,-,'Envelope ID: 006B3C47-7AFO-473A-A805-01EDAA444FDF
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BUILDING PERMIT +
TOWN OF NORTH ANDOVER
APPLICATION FOR PLAN EXAMINATION
Permit NO: Date Received
Date Issued:175iTir
LOCATION,
3 \t
PROPERTY OMER X
MAP NO% PAR
I
TANT: ADOicant must comr)lete all items on this
ZONING DISTRICT: Historic Distdct yes no
Machine ShoD Villacie ves no
TYPE OF IMPROVEMENT
PROPOSED USE
Residential
Non- Residential
0 New Building
E_ One family
El Addition
f- Two or more family
0 Industrial
"iteration
No. of units:
D Commercial
ri Repair, replacement
f- Assessory Bldg
n Others:
1-1 Demolition
E Other
I
U Septic Ili Well
L Floodplain u Wetlands
u Watershed District
11 Water/Sewer
,__ � 1�. Z'z)
Identification Please Type or Print Clearly)
OWNER: Name: PhoneL2 - al�6 - fi��
Address:
CONTRACTOR Name: Phone:
VaZ�.��
Ad d re s s:
Supervisor's Construction License:Q2 k(J_
�')�_\C) Exp. Date: kmCk\00\0
Home Improvement License: I I (D() �(5kk Exp. Date: (_0 n
ARCH ITECTIENGIN EER Phone:
Address: Reg. No.
FEE SCHEDULE: BULDING PERMIT. VZOOPER S1000.00 OF THETOTAL ESTIMATED COSTBASED ON$125.00PERS.F.
Total Project Cost: $ C F E E: $) k_
Check No.: �b� Receipt No.: /9�6 iff'g
NOTE: Persons contracting with unregistered contractors do not have access io the guarantyfund
u ign d by:
Signature of Agent/OwnerNML Luffs%ignature of contractor— yaw's
a --N UQV �-10912AMAOMC5...
-,V/nv
At
Plans Submitted Plans Waived Certified Plot Plan Stamped Plans El
TYPE OF SEWERAGE DISPOSAL
Public Sewer
Taming/Massage/Body Art
Swimming Pools
well
Tobacco Sales
Food Packaging/Sales El
Private (septic tank, etc.
Permanent Dumpster on Site El
THE FOLLOWING SECTIONS FOR OFFICE USE ONLY
INTERDEPARTMENTAL SIGN OFF - U FORM
PLANNING & DEVELOPMENT
COMMENTS
Reviewed On Signature'.
CONSERVATION Reviewed on Signature
COMMENTS
HEALTH
COMMENTS.
Reviewed on Signature
Zoning Board of Appeals: Variance, Petition No: Zoning Decision/receipt submitted yes
4
Pl.anning Board Decision:
Comments
1%j
Conservation Decision: Comments
Water & Sewer Connectionisignature & Date DrivewaV Permit
DPW Town Engineer: Signature:
LOcateci M4 OSgood 6treet
,,;b(np -'s
Rp "RTIKE WTI
F Vrolbep, ft 'e!A; I Jbnai r
e.
1-r- t —Plot
COMMLNTTS,
Dimension
Number of Stories: Total square feet of floor area, based on Exterior dimensions.
Total land area, sq. ft.:
ELECTRICAL: Movement of Meter location, mast or service drop requires approval of
Electrical Inspector Yes No
DANGER ZONE LITERATURE: Yes -No
MGL Chapter 166 Section 21A —F and G min.$100-$1000 fine
NOTES and DATA — (For department use
Ll Notified for pickup Call Ema
Date
Doe.Building Pennit Revised 2014
Time Contact Name
Building Department
The following is a list of the required forms to be filled out for the appropriate permit to be obtained.
Roofing, Siding, Interior Rehabilitation Permits
Building Permit Application
Workers Comp Affidavit
Photo Copy Of H.I.C. And/Or C.S.L. Licenses
Copy of Contract
Floor Plan Or Proposed Interior Work
Engineering Affidavits for Engineered products
10TE: All dumpster permits require sign off from Fire Department prior to issuance of Bldg Permit
Addition Or Decks
4 Building Permit Application
,4. Certified Surveyed Plot Plan
4 Workers Comp Affidavit
.4 Photo Copy of H.I.C. And C.S.L. Licenses
4 Copy Of Contract
4 Floor/Cross Section/Elevation Plan Of Proposed Work With Sprinkler Plan And
Hydraulic Calculations (If Applicable)
4, Mass check Energy Compliance Report (if Applicable)
4 Engineering Affidavits for Engineered products
10TE: All dumpster permits require sign off from Fire Department prior to issuance of Bldg Permit
New Construction (Single and Two Family)
4 Building Permit Application
4� Certified Proposed Plot Plan
4 Photo of H.I.C. And C.S.L. Licenses
Workers Comp Affidavit
Two Sets of Building Plans (One To Be Returned) to Include Sprinkler Plan And
Hydraulic Calculations (If Applicable)
Copy of Contract
2012 IECC Energy code
Engineering Affidavits for Engineered products
10TE: All dumpster permits require sign off from Fire Department prior to issuance of Bldg. Permit
In all cases if a variance or special permit was required the Town Clerks office must stamp the decision from the Board of Appeals
that the appeal period is over. The applicant must then get this recorded at the Registry of Deeds. One copy and proof of recording
must be submitted with the building application
Doc: Building Permit Revised 2014
Location
No. Date 4(
t -j (��
Check # I f 6
TOWN OF NORTH ANDOVER
Certificate of Occupancy , $
Building/Frame Permit Fee
Foundation Permit Fee
Other Permit Fee $
TOTAL $
�,I!Mildihg Inspector
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July 2, 2015
Revised: November 25,2015
Mr. Wissem. Taboubi
NRG Solar
89F Washington Ave
Natick, MA 01760
RE: Derby Residence Solar Installation
531 Johnson Street
North Andover, MA 0 1845
Structural Assessment of Roof Framing
MPP Project No: 15-1264
Dear Mr. Taboubi:
Pursuant to your request, MPP Engineers has performed a limited structural evaluation of the roof
framing at the above referenced site to determine if the roof has adequate capacity to support the proposed
solar panels. Our analysis was based on the framing information and configurations provided by NRG
Solar. It is our understanding that the structural components of the existing roof framing are in good
condition. It is further understood that all existing connections between the various roof framing members
behave in the manner that a typical truss system is intended to behave prior to installation of the solar
panels.
Results
House Rear & Garage Rear Roofs — NOT adequate to support the proposed solar panels
• Provide sistering/reinforcement with new 2x4 member for all top chords on the side where solar
panels will be installed. Reinforcement shall be the full length of the top chord and be installed
flushed with the ridge and extended down towards the eve.
• Attach all reinforcements using (2) SDS 1/4" x 3" long screws @ 12" O.C. or (2) 16D common
nails @ 6" O.C. for full length of member.
• If the reinforcement for the top chord cannot be installed as a single piece, it may be installed as
two separate pieces provided there is a minimum 4 feet of lap.
Rear Dormer South Roof — adequate to support the proposed solar panels
NOTE: It has come to our attention that a few of the trusses for the House Rear Roof had been cut for the
building of a staircase opening. All trusses that have been cut shall be double sistered/reinforced by
providing new 2x6 member on BOTH sides of the top chords for both sides of the roof. Reinforcement
shall be the full length of the top chord and be installed flushed with the ridge and extended down towards
the eve. Attach all reinforcements using (2) SDS 1/4" x 3" long screws @ 12" O.C. or (2) 16D common
nails @ 6" O.C. for fall length of member.
MPP Engineers, LLC 1 34 South Main Street, Suite D I Allentown, NJ 08501
609-489-5511 (office) I www.Moengiiieers.com 1 609-489-5916 (fax)
Derby Residence Solar Installation
531 Johnson Street
North Andover, MA 0 1845
Structural Data and Code Information
Our analysis was performed in accordance with the requirements of the 780 CMR 5 1.00: Massachusetts
Residential Code which has adopted the 2009 International Residential Code with Massachusetts
amendments. Per Table R301.2 (1), the ground snow load to be used for each town is in accordance with
Table R301.2 (5). Similarly, the wind speed for each town is in accordance with Table R301.2 (4). The
roof framing was analyzed in accordance with Section R104.11 of the of the 2009 International
Residential Code which allows for alternate approved design such as using the ASCE 7 code for
determining actual snow loads on roofs (e.g. deriving flat or sloped roof snow loads from the specified
ground snow load referenced in Table R301.2 (5)). Wood members were analyzed and designed in
accordance with the NDS 2005.
The roof areas for the solar panels of this residence are framed in a gable configuration utilizing pre-
engineered metal plate connected wood trusses. All roofs have the same configuration, as per information
provided by NRG. The existing roof structure is in good condition and has one layer of asphalt shingles.
The pertinent data is listed below:
House Rear, Garage Rear, & Rear Dormer South Roofs L40 Panels Total):
Roof Truss Members:
Spacing:
Roof Slope:
Horizontal Projected
Length of Rafter
(Horizontal Projection):
Ceiling Joists:
Roof Sheathing:
Condition of Framing:
Roof Covering:
211 x 4" (#2 Spruce -Pine Fir Assumed)
24" O.C.
22 Degrees
14.60 feet maximum
Present
Plywood Sheathing
Good
Asphalt Shingles
Ground Snow Load, Pg: 50 PSF from Table R301.2 (5) of Massachusetts Residential Code
Importance Factor, 1: 1.0
Exposure Factor, Ce: 1.0 (Conservatively taken as Partially Exposed)
Thermal Factor, Ct: 1.1 with Panels (Cold Roof)
1.0 existing condition (Warm Roof)
Design Snow Loads
On sloped roof -
Wind Speed:
Exposure
Analysis Results:
General Considerations
35.00 PSF (Existing — Unobstructed Warm Roof)
30.80 PSF (New — Slippery Surface on Cold Roof)
100 MPH from Table R301.2 (4) of Massachusetts Residential Code
B
The proposed solar panels consist of solar panels which impose a total weight of approximately
2.5 to 3 pounds per square foot (PSF) on the roof surface. From a practical standpoint, the
Derby Residence Solar Installation
531 Johnson Street
North Andover, MA 0 1845
International Residential Code allows up to 2 roof coverings on a residential dwelling. Each layer
of roofing imposes a net load of about 2.5 to 3.0 PSF on the roof From this perspective, since the
existing roof has only a single layer of shingles, a second layer is allowed to be added by the code
without analysis. This 2' layer of shingles essentially weighs the same as the proposed solar
panels.
> Materials such as metal roofs or solar panels are considered slippery surfaces. Since the solar
panels are mounted slightly above the roof line, it would be conservative to consider a thermal
factor Ct of 1. 1, treating the panel surface as a cold roof rather than as a warin roof. Based on the
roof slope and considering it as a slippery surface, the snow load is reduced by 12% compared
with the snow load acting directly on the existing shingled roof surface. This reduction equates to
approximately 4.20 PSF which completely offsets the weight of the solar panels.
Gravity Loading:
House Rear & Garage Rear Roofs — NOT adequate to support the proposed solar panels
• Provide sistering/reinforcement with new 2x4 member for 0 top chords on the side where solar
panels will be installed. Reinforcement shall be the full length of the top chord and be installed
flushed with the ridge and extended down towards the eve.
• Attach all reinforcements using (2) SDS 1/4" x 3" long screws @ 12" O.C. or (2) 16D common
nails @ 6" O.C. for full length of member.
• If the reinforcement for the top chord cannot be installed as a single piece, it may be installed as
two separate pieces provided there is a minimum 4 feet of lap.
Rear Dormer South Roof — adequate to support the proposed solar panels
NOTE: It has come to our attention that a few of the trusses for the House Rear Roof had been cut for the
building of a staircase opening. All trusses that have been cut shall be double sistered/reinforced by
providing new 2x6 member on BOTH sides of the top chords for both sides of the roof. Reinforcement
shall be the full length of the top chord and be installed flushed with the ridge and extended down towards
the eve. Attach all reinforcements using (2) SDS 1/4" x 3" long screws @ 12" O.C. or (2) 16D common
nails @ 6" O.C. for full length of member.
It is our understanding that the panels will be installed using IronRidge rail with L -feet (or equal) at
approximately 48 inches on center (e.g. every two to three rafters). The leveling feet will be fastened
directly into the existing joists with 5/16" diameter lag screws with a minimum embedment of 3". In
addition, it is important that the leveling feet support locations be staggered between adjacent panels so
that no single rafter supports more load than under the existing conditions.
Wind Loadin%!:
Based on our calculations, the net wind loads imposed on the roof framing with an attachment spacing as
indicated above will be less than the current loading on the roof framing. In addition, provided that the
leveling feet are attached to the roof framing members in a typical staggered fashion, the overall wind
loading imposed on the structure and the individual framing members will not be impacted to any great
extent.
Derby Residence Solar Installation
531 Johnson Street
North Andover, MA 0 1845
If you have any questions regarding this matter, please feel free to contact my office at 609-489-5511.
We appreciate the opportunity to assist you with this evaluation.
Sincerely,
MPP Engineers, LLC
sma F ar
Ashutosh Patel, P.E.
NIA Prof Eng. Lic. No. 48235
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July 2, 2015
Revised: November 25,2015
Mr. Wissern Taboubi
NRG Solar
89F Washington Ave
Natick, MA 01760
RE: Derby Residence Solar Installation
53 1 Johnson Street
North Andover, MA 0 1845
Structural Assessment of Roof Framing
MPP Project No: 15-1264
Dear Mr. Taboubi:
Pursuant to your request, MPP Engineers has performed a limited structural evaluation of the roof
framing at the above referenced site to determine if the roof has adequate capacity to support the proposed
solar panels. Our analysis was based on the framing information and configurations provided by NRG
Solar. It is our understanding that the structural components of the existing roof framing are in good
condition. It is further understood that all existing connections between the various roof framing members
behave in the manner that a typical truss system is intended to behave prior to installation of the solar
panels.
Results
House Rear & Garage Rear Roofs — NOT adequate to support the proposed solar panels
• Provide sistering/reinforcement with new 2x4 member for all top chords on the side where solar
panels will be installed. Reinforcement shall be the fiiU length of the top chord and be installed
flushed with the ridge and extended down towards the eve.
• Attach all reinforcements using (2) SDS 1/4" x 3" long screws @ 12" O.C. or (2) 16D common
nails @ 6" O.C. for full length of member.
• If the reinforcement for the top chord cannot be installed as a single piece, it may be installed as
two separate pieces provided there is a minimum 4 feet of lap.
Rear Donner South Roof — adequate to support the proposed solar panels
NOTE: It has come to our attention that a few of the trusses for the House Rear Roof had been cut for the
building of a staircase opening. All trusses that have been cut shall be double sistered/reinforced by
providing new 2x6 member on BOTH sides of the top chords for both sides of the roof Reinforcement
shall be the full length of the top chord and be installed flushed with the ridge and extended down towards
the eve. Attach all reinforcements using (2) SDS 1/4" x 3" long screws @ 12" O.C. or (2) 16D common
nails @ 6" O.C. for full length of member.
MPP Engineers, LLC 1 34 South Main Street, Suite D I Allentown, NJ 08501
609-489-55 11 (office) I www.mppengineers.com 1 609-489-5916 (fax)
Derby Residence Solar Installation
5 3 1 Johnson Street
North Andover, MA 0 1845
Structural Data and Code Information
Our analysis was performed in accordance with the requirements of the 780 CMR 5 1.00: Massachusetts
Residential Code which has adopted the 2009 International Residential Code with Massachusetts
amendments. Per Table R301.2 (1), the ground snow load to be used for each town is in accordance with
Table R301.2 (5). Similarly, the wind speed for each town is in accordance with Table R301.2 (4). The
roof framing was analyzed in accordance with Section R104.11 of the of the 2009 International
Residential Code which allows for alternate approved design such as using the ASCE 7 code for
determining actual snow loads on roofs (e.g. deriving flat or sloped roof snow loads from the specified
ground snow load referenced in Table R301.2 (5)). Wood members were analyzed and designed in
accordance with the NDS 2005.
The roof areas for the solar panels of this residence are framed in a gable configuration utilizing pre-
engineered metal plate connected wood trusses. All roofs have the same configuration, as per information
provided by NRG. The existing roof structure is in good condition and has one layer of asphalt shingles.
The pertinent data is listed below:
House Rear, Garage Rear, & Rear Dormer South Roofs (40 Panels Total):
Roof Truss Members:
Spacing:
Roof Slope:
Horizontal Projected
Length of Rafter
(Horizontal Projection):
Ceiling Joists:
Roof Sheathing:
Condition of Framing:
Roof Covering:
Ground Snow Load, Pg:
Importance Factor, 1:
Exposure Factor, Ce:
Thermal Factor, Ct:
Design Snow Loads
On sloped roof -
Wind Speed:
Exposure
Analysis Results:
General Considerations
2" x 4" (#2 Spruce -Pine Fir Assumed)
24" O.C.
22 Degrees
14.60 feet maximum
Present
Plywood Sheathing
Good
Asphalt Shingles
50 PSF from Table R301.2 (5) of Massachusetts Residential Code
1.0
1.0 (Conservatively taken as Partially Exposed)
1.1 with Panels (Cold Roof)
1.0 existing condition (Warm Roof)
35.00 PSF (Existing — Unobstructed Warm Roof)
30.80 PSF (New — Slippery Surface on Cold Roof)
100 MPH from Table R301.2 (4) of Massachusetts Residential Code
B
The proposed solar panels consist of solar panels which impose a total weight of approximately
2.5 to 3 pounds per square foot (PSF) on the roof surface. From a practical standpoint, the
Derby Residence Solar Installation
531 Johnson Street
North Andover, MA 01845
International Residential Code allows up to 2 roof coverings on a residential dwelling. Each layer
of roofing imposes a net load of about 2.5 to 3.0 PSF on the roof. From this perspective, since the
existing roof has only a single layer of shingles, a second layer is allowed to be added by the code
without analysis. This 2 d layer of shingles essentially weighs the same as the proposed solar
panels.
Materials such as metal roofs or solar panels are considered slippery surfaces. Since the solar
panels are mounted slightly above the roof line, it would be conservative to consider a thermal
factor Ct of 1. 1, treating the panel surface as a cold roof rather than as a warm roof. Based on the
roof slope and considering it as a slippery surface, the snow load is reduced by 12% compared
with the snow load acting directly on the existing shingled roof surface. This reduction equates to
approximately 4.20 PSF which completely offsets the weight of the solar panels.
Gravity Loadin2:
House Rear & Garage Rear Roofs — NOT adequate to support the proposed solar panels
• Provide sistering/reinforcement with new 2x4 member for all top chords on the side where solar
panels will be installed. Reinforcement shall be the full length of the top chord and be installed
flushed with the ridge and extended down towards the eve.
• Attach all reinforcements using (2) SDS V4" x 3" long screws @ 12" O.C. or (2) 16D common
nails @ 6" O.C. for full length of member.
• If the reinforcement for the top chord cannot be installed as a single piece, it may be installed as
two separate pieces provided there is a minimum 4 feet of lap.
Rear Dormer South Roof — adequate to support the proposed solar panels
NOTE: It has come to our attention that a few of the trusses for the House Rear Roof had been cut for the
building of a staircase opening. All trusses that have been cut shall be double sistered/reinforced by
providing new 2x6 member on BOTH sides of the top chords for both sides of the roof. Reinforcement
shall be the full length of the top chord and be installed flushed with the ridge and extended down towards
the eve. Attach all reinforcements using (2) SDS 1/4" x 3" long screws @ 12" O.C. or (2) 16D common
nails @ 6" O.C. for full length of member.
It is our understanding that the panels will be installed using IronRidge rail with L -feet (or equal) at
approximately 48 inches on center (e.g. every two to three rafters). The leveling feet will be fastened
directly into the existing joists with 5/16" diameter lag screws with a minimum embedment of 3". In
addition, it is important that the leveling feet support locations be staggered between adjacent panels so
that no single rafter supports more load than under the existing conditions.
Wind Loadinpa:
Based on our calculations, the net wind loads imposed on the roof framing with an attachment spacing as
indicated above will be less than the current loading on the roof framing. In addition, provided that the
leveling feet are attached to the roof framing members in a typical staggered fashion, the overall wind
loading imposed on the structure and the individual framing members will not be impacted to any great
extent.
Derby Residence Solar Installation
531 Johnson Street
North Andover, MA 0 1845
If you have any questions regarding this matter, please feel free to contact my office at 609-489-5511.
We appreciate the opportunity to assist you with this evaluation.
Sincerely,
MPP Engineers, LLC
4- 7,; r�-
sma F arT
Ashutosh Patel, P.E.
NIA Prof Eng. Lic. No. 48235
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Mr. Wissem Taboubi
NRG Solar
89F Washington Ave
Natick, MA 01760
RE: Derby Residence Solar Installation
531 Johnson Street
North Andover, MA 0 1845
Structural Assessment of Roof Framing
MPP Project No: 15-1264
Dear Mr. Taboubi-
Pursuant to your request MPP Engineers has performed a limited structural evaluation of the roof
framing at the above referenced site to determine if the roof has adequate capacity to support the proposed
solar panels. Our analysis was based on the framing information and configurations provided by NRG
Solar. It is our understanding that the structural components of the existing roof fiuming are in good
condition. It is finther understood that all existing connections between the various roof framing members
behave in the manner that a typical truss system is intended to behave prior to installation of the solar
panels.
Results
House Rear & Garage Rear Roofs — NOT adequate to support the proposed solar panels
• Provide sistering/reinforcement with new 2x4 member for all top chords on the side where solar
panels will be installed. Reinforcement shall be the full length of the top chord and be installed
flushed with the ridge and extended down towards the eve.
• Attach all reinforcements using (2) SDS V4" x 3" long screws @ IT' 0. C. or (2) 16D common
nails @ 6" O.C. for full length of member.
• If the reinforcement for the top chord cannot be installed as a single piece, it may be installed as
two separate pieces provided there is a minimum 4 feet of lap.
Rear Donner South Roof — adequate to support the proposed solar panels
Structural Data and Code Information
Our analysis was performed in accordance with the requirements of the 780 CMR 5 1.00: Massachusetts
Residential Code which has adopted the 2009 International Residential Code with Massachusetts
amendments. Per Table R301.2 (1), the ground snow load to be used for each town is in accordance with
Table R301.2 (5). Similarly, the wind speed for each town is in accordance with Table R301.2 (4). The
MPP Engineers, LLC 1 34 South Main Street, Suite D I Allentown, NJ 08501
609-489-55 11 (office) I www.mppenaiiieers.com 1 609-489-5916 (fax)
Derby Residence Solar Installation
53 1 Johnson Street
North Andover, MA 0 1845
roof framing was analyzed in accordance with Section R104.11 of the of the 2009 International
Residential Code which allows for alternate approved design such as using the ASCE 7 code for
determining actual snow loads on roofs (e.g. deriving flat or sloped roof snow loads from the specified
ground snow load referenced in Table R301.2 (5)). Wood members were analyzed and designed in
accordance with the NDS 2005.
The roof areas for the solar panels of this residence are framed in a gable configuration utilizing pre-
engineered metal plate connected wood trusses. All roofs have the same configuration, as per information
provided by NRG. The existing roof structure is in good condition and has one layer of asphalt shingles.
The pertinent data is listed below:
House Rear, GgLage Rear, & Rear Dormer South Roofs (40 Panels Total):
Roof Truss Members:
Spacing:
Roof Slope:
Horizontal Projected
Length of Rafter
(Horizontal Projection):
Ceiling Joists:
Roof Sheathing:
Condition of Framing:
Roof Covering:
2" x 4" (#2 Spruce -Pine Fir Assumed)
24" O.C.
22 Degrees
14.60 feet maximum
Present
Plywood Sheathing
Good
Asphalt Shingles
Ground Snow Load, Pg: 50 PSF from Table R301.2 (5) of Massachusetts Residential Code
Importance Factor, 1: 1.0
Exposure Factor, Ce: 1.0 (Conservatively taken as Partially Exposed)
Thermal Factor, Ct: 1.1 with Panels (Cold Roof)
1.0 existing condition (Warm Roof)
Design Snow Loads
On sloped roof- 35.00 PSF (Existing — Unobstructed Warm Roof)
30.80 PSF (New — Slippery Surface on Cold Roof)
Wind Speed: 100 MPH from Table R301.2 (4) of Massachusetts Residential Code
Exposure B
Analysis Results:
General Considerations
> The proposed solar panels consist of solar panels which impose a total weight of approximately
2.5 to 3 pounds per square foot (PSF) on the roof surface. From a practical standpoint, the
International Residential Code allows up to 2 roof coverings on a residential dwelling. Each layer
of roofing imposes a net load of about 2.5 to 3.0 PSF on the roof. From this perspective, since the
existing roof has only a single layer of shingles, a second layer is allowed to be added by the code
without analysis. This 21 layer of shingles essentially weighs the same as the proposed solar
panels.
Derby Residence Solar Installation
531 Johnson Street
North Andover, MA 0 1845
Materials such as metal roofs or solar panels are considered slippery surfaces. Since the solar
panels are mounted slightly above the roof line, it would be conservative to consider a thermal
factor Ct of 1. 1, treating the panel surface as a cold roof rather than as a warm roof Based on the
roof slope and considering it as a slippery surface, the snow load is reduced by 12% compared
with the snow load acting directly on the existing shingled roof surface. This reduction equates to
approximately 4.20 PSF which completely offsets the weight of the solar panels.
Gravity Loadin2:
House Rear & Garage Rear Roofs — NOT adequate to support the proposed solar panels
• Provide sistering/reinforcement with new 2x4 member for all top chords on the side where solar
panels will be installed. Reinforcement shall be the full length of the top chord and be installed
flushed with the ridge and extended down towards the eve.
• Attach all reinforcements using (2) SDS V4" x 3" long screws @ 12" O.C. or (2) 16D common
nails @ 6" O.C. for full length of member.
• If the reinforcement for the top chord cannot be installed as a single piece, it may be installed as
two separate pieces provided there is a minimum 4 feet of lap.
Rear Dormer South Roof — adequate to support the proposed solar panels
It is our understanding that the panels will be installed using IronRidge rail with L -feet (or equal) at
approximately 48 inches on center (e.g. every two to three rafters). The leveling feet will be fastened
directly into the existing joists with 5/16" diameter lag screws with a minimum embedment of 3". In
addition, it is important that the leveling feet support locations be staggered between adjacent panels so
that no single rafter supports more load than under the existing conditions.
Wind Loadin2:
Based on our calculations, the net wind loads imposed on the roof framing with an attachment spacing as
indicated above will be less than the current loading on the roof framing. In addition, provided that the
leveling feet are attached to the roof framing members in a typical staggered fashion, the overall wind
loading imposed on the structure and the individual framing members will not be impacted to any great
extent.
Derby Residence Solar Installation
531 Johnson Street
North Andover, MA 0 1845
If you have any questions regarding this matter, please feel free to contact my office at 609-489-5511.
We appreciate the opportunity to assist you with this evaluation.
Sincerely,
MPP Engineers, LLC
4 X
or
Asma Fan
Ashutosh Patel, P.E.
MA Prof Eng. Lic. No. 48235
DocuSign Envelope ID: 7D70ECOO-DAFE-4040-8F3C-2lFl65EBDE76
Exhibit 3 - MA
State SpeciTic Rights - Massachusetts
A. Contractor License Number and Notices. Even though you are leasing the Solar System, Massachusetts' law may consider this
Lease to be a home improvement contract. Therefore, we are including the provisions and notices contained in this section,
which you acknowledge by your signature below.
1. All home improvement contractors and subcontractors shall be registered by the Director of the Massachusetts Home
Improvement Contractor Registration program, and any inquiries about a contractor or subcontractor relating to a
registration should be directed to:
Director
Home Improvement Contractor Registration
One Ashburton Place, Room 1303
Boston, MA 02108
(617) 727-8598
2. The Massachusetts contractor license number for Roof Diagnostics Solar and Electric, LI -C is
NJ13VH06478300: NY50906-H: , and its Federal Taxpayer ID Number is 45-2247975.
3. The Federal Taxpayer ID Number for NRG RSS LLC is 27-4572970
4. The name of the salesperson who solicited or negotiated this Lease.
S. It is the obligation of NRG RSS and/or its contractor or subcontractor to obtain all necessary permits for installation of
the Solar System. Homeowners who secure their own permits are ineligible for the guaranty program available to
consumers suffering losses from home installation contracts under state law.
6. We estimate that construction and installation of the Solar System will begin on or about and be substantially
complete on or about (the "Installation Date").
7. You may cancel this Lease if it has been signed by a party thereto at a place other than the address of NRG RSS,
which may be its main office or branch thereof, provided you notify NRG RSS in writing at the main office or branch
by ordinary mail posted, by telegram sent or by delivery, not later than midnight of the third business day
following the signing of this Lease. See the attached notice of cancellation form for an explanation of this right
[Exhibit 2].
S. The time period during which the Property Owner may cancel the Lease shall not commence until a copy of the
Lease has been delivered to the Property Owner. Delivery of a copy of the Lease may be via electronic means (e.g.
emailled or downloaded).
9. THE LANGUAGE IN SECTION 12 OF THE NRG RSS LEASE REQUIRING ALL DISPUTES TO BE RESOLVED THROUGH A
BINDING ARBITRATION IN ACCORDANCE WITH AAA COMMERCIAL RULES IS NOT BINDING IN MASSACHUSETTS.
NRG RSS AND THE PROPERTY OWNER HEREBY MUTUALLY AGREE IN ADVANCE THAT IN THE EVENT NRG RSS HAS A
DISPUTE CONCERNING THIS LEASE, NRG RSS MAY SUBMIT SUCH DISPUTE TO A PRIVATE ARBITRATION SERVICE
WHICH HAS BEEN APPROVED BY THE DIRECTOR OF THE EXECUTIVE OFFICE OF CONSUMER AFFAIRS AND BUSINESS
REGULATIONS AND THE PROPERTY OWNER SHALL BE REQUIRED TO SUBMIT TO SUCH ARBITRATION AS PROVIDED
IN M. G. L. c. 142A. Docuffigned by:
Property Owner: — E_— 'r vu-��
NRG RSS:
NOTICE: The signatures of the parties above apply only to the agreement of the parties to alternate dispute resolution initiated
byNRGRSS. The Property Owner may initiate alternative dispute resolution even where this section is not signed separately by
the parties.
n
Lease Number. 10-0049155994-000-0000 Exhibit 3, Page I rg
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78
AC40RV CERTIFICATE OF LIABILITY INSURANCE
DATE (MM1DDlYYYY)
1 7/15/2015
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: It the certificate holder is an ADDITIONAL INSURED, the policy(jes) 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 endorsemengs).
PRODUCER
Malcolm & Parsons Insurance Agency
713 Washington Street
P.O. Box 527
Stoughton MA 02072
NT CT
CNAO MP Darlene Mulcahy
P (781)344-3200 FF—AX (781)344-1425
fAHICONE0. EXt): I (AIC , Nol:
E-MAIL
ADDRESS:
INSURER(S) AFFORDING COVERAGE NAIC #
INSURER A Northland Insurance Company
INSURED
Certified Safe Electric, Inc.
50 Tower Avenue
Marshfield MA 02050-5131
INSURER B:Sentinel Insurance Company Ltd 39098
INSURER C.Nautilus Insurance Company
INSURERD:CNA Surety
INSURER E:
INSURER F:
COVERAGES CER71FICATE NUMBER-CL157602635 REVISION NUMBER:
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.
INSR
LTR
TYPE OF INSURANCE
120 Main Street
ACCORDANCE WITH THE POLICY PROVISIONS.
POLICY NUMBER_
POLICY EFF
IMMfDD1YYYY)
POLICY EXP
(MlWDD[YYYY)
LIMITS
X COMMERCIAL GENERAL LIABILITY
EACH OCCURRENCE $ 1,000,000
A
CLAIMS -MADE FX] OCCUR
DAMAGE TO RENTED
PREMISES (Ea occurrence) $ 100,000
MED EXP (Any one person) $ 5,000
x ISO Fo= CGO001
TBI
7/15/2015
7/15/2016
X Contractual Liab
PERSONAL & ADV INJURY $ 1,000,000
GEN7L AGGREGATE LIMIT APPLIES PER:
GENERAL AGGREGATE $ 21000,000
RO-
POLICY F] JPECT LOC
pq
PRODUCTS - COMPIOP AGG $ 2,000,000
General Aggregate $ 5,000,000
OTHER:
AUTOMOBILE
LIABILITY
C(EOM, INGLE LIMIT $ 1,000,000
BODILY INJURY (Per person) $
B
ANY AUTO
ALL OWNED SCHEDULED
AUTOS AUTOS
08UECZJ8251
3/7/2015
3/7/2016
BODILY INJURY (Per accident) $
PR
(PMER DAMAGE $
X
NON-aWNED
HIRED AUTOS AUTOS
Ix
PIP -Basic $ 8,000
X
ISO CA0001
UMBRELLA LIAB
OCCUR
EACH OCCURRENCE $ 2,000,000
AGGREGATE $ 2,000,000
C
F-xl
EXCESS LIAB
X
X
CLAIMS -MADE
[�]LDED
RETENTION
$
TBI
7/15/2015
7/15/2016
WORKERS COMPENSATION '?
AND EMPLOYERS'LIABILITY Y/N
OTH-
SPTEA"TU ER
AW PROPRIETOR/PARTNERIEXECUTIVE
E.L. EACH ACCIDENT $
OFFICER/ME BER EXCLUDED? F-1
N/A
(Mandatory IMn NH)
E.L. DISEASE - EA EMPLOYEE $
If gas, describe under
D SCRIPTION OF OPERATIONS below
E.L. DISEASE - POLICY LIMIT
1)
FIDELITY- BE DISHONESTY
64
7/1/2015
7/1/2016
$50,000
DESCRIPTION OF OPERATIONS / LOCATIONS VEHICLES (ACORD 101, Addirtlonal Remarks Schedule, may be attached if more space is required)
CERTIFICATE HOLDER CANCELLATION
certifiedsafeoffice@gntail.
SHOULD ANY OF THE ABOVE DESCRIBED POLICIES BE CANCELLED BEFORE
Town of North Andover
THE EXPIRATION DATE THEREOF, NOTICE WILL BE DEUVERED IN
120 Main Street
ACCORDANCE WITH THE POLICY PROVISIONS.
North Andover, MA 01845
AUTHORIZED REPRESENTATIVE
Ainne Parsons/DARL
ACORD 25 (2014101)
INS025(2ol4m)
@ 1988-2014 ACORD CORPORATION. All rights reserved.
The ACORD name and logo are registered marks of ACORD
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CUNIPAGINWEAUH OF MASSACHUSETTS
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Expiration: Ai2a,'20116 Privalte Corwra�,,cn
ZERI'iFIEZ) SAFE E-ECTRIC. INC
BRUCE DAVIS
50 TOWER A'��-
IMARSHFIELD MA 02CS-7
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License or registration valid for indi,.idul use only
before threxpiration date. If found return to:
Office of Conbunner Affairs and Busines-s Regulation
10 Park Plazo - Suite WO
Hoston. MA 02 .116
f
Not -,alid without -4�igtmtury