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Home My WebLink AboutBuilding Permit #229-15 - 161 WEYLAND CIRCLE 9/2/2014 TOWN OF NORTH ANDOVER /APPLICATION FOR PLAN EXAMINATION Permit N0: i( J Date Received Date Issued: it 114 I PORTANT: Applicant must complete all items on this page LOCATION t PROPERTY OWNER Gf, QG �-�9 "IPrint 100 Year Old Structure yes no MAP NO: PARCEL ZONING DISTRICT-..Historic District yes no Machine Shop Village yes no TYPE OF IMPROVEMENT PROPOSED USE Residential Non- Residential ❑ New Building -1?e@ne family ❑Addition ❑Two or more family ❑ Industrial ❑Alteration No. of units: ❑ Commercial ❑ Repair, replacement ❑Assessory Bldg ❑ Others: ❑ Demolition ❑ Other ❑ Septic ❑Well ❑ Floodplain ❑Wetlands ❑ Watershed District ❑Water/Sewer Ins DESCRIPTION OF WORK T BE PERFORMED: Identification Please Type or Print Clearly) OWNER: Name: qb_�t Phone:1(0_ Address: CONTRACTOR Name:3a`Qs alQrmoal Phone:7_61 a,;(_S5 Addres0Q, R^ �SU C\JJ CK _S�_� rrix� alcto 4 � J Supervisor's Construction License: CH 6,-7)25 �J Exp. Date: Home Improvement License:LJC7 S��' Exp. Date: < < x ARCHITECT/ENGINEER Phone: Address: Reg. No. F S L B L {NG PERM IT6$12.00 PER$1000.00 OF THE TOTAL ESTIMATED COST BASED ON$125.00 PER S.F. .00 Total Project Cost: $ 3�,9_:Q-C� FEE: $ ha Check No.: r(� ' Receipt No.: � ��— � � NOTE: Persons contracting with unregistered contractors do not have access to the guara and _ P� n Signature of Agent/Own Signature of contractor Qq Plans Submitted ❑ Plans Waived ❑ Certified Plot Plan ❑ Stamped Plans ❑ Plans Submitted ❑ Plans Waived ❑ Certified Plot Plan ❑ Stamped Plans ❑ TYPE-,OF-.SEWERAGE DISPOSAL Public Sewer ❑ Tanning/Massage/BodyArt ❑. Swimming Pools 0 Well ❑ Tobacco Sales ❑ Food Packaging/Sales ❑ Private(septic tank, etc. ❑ permanent Dumpster on Site ❑ THE FOLLOWING SECTIONS FOR OFFICE USE ONLY INTERDEPARTMENTAL SIGN OFF - U FORM DATE REJECTED DATE APPROVED PLANNING & DEVELOPMENT ❑ ❑ COMMENTS CONSERVATION Reviewed on Siqnature COMMENTS HEALTH Reviewed on Signature COMMENTS 1 1 Zoning Board of Appeals: Variance, Petition No: Zoning Decision/receipt submitted yes Planning Board Decision: Comments Conservation Decision: Comments Water & Severer Connection/Signature& Date Driveway Permit DPW Tow;! Engineer: Signature: Located 384 Osgood Street FIRE DEPARTMF_iVT -Temp Dumpster on site yes no Located at 124 Mair, Street Fire Department signature/date COMMENTS 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 ® Notified for pickup - Date Doc.Building Permit Revised 2010 Building Department The folli3. wing is a list of the required forms to be filled out for the appropriate permit to be obtained. Roofirig, 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 NOTE: All dumpster permits require sign off from Fire Department prior to issuance of Bldg Permit Addition Or Decks ❑ Building Permit Application ❑ Certified Surveyed Plot Plan ❑ Workers Comp Affidavit ❑ Photo Copy of H.I.C. And C.S.L. Licenses ❑ Copy Of Contract ❑ Floor/Crossection/Elevation Plan Of Proposed Work With Sprinkler Plan And Hydraulic Calculations (If Applicable) ❑ Mass check Energy Compliance Report (If Applicable) ❑ Engineering Affidavits for Engineered products NOTE: All dumpster permits require sign off from Fire Department prior to issuance of Bldg Permit New Construction (Single and Two Family) ❑ Building Permit Application ❑ Certified Proposed Plot Plan ❑ 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 ❑ Mass check Energy Compliance Report ❑ Engineering Affidavits for Engineered products NOTE: 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 apn•,al period is over. The applicant must then get this recorded at the Registry of Deeds. One copy and proof of recording must be subm.+.ted with the building application Doc: Doc.Building Permit Revised 2012 Location j(�f No. — Date . • TOWN OF NORTH ANDOVER m Certificate of Occupancy $ Building/Frame Permit Fee $ Foundation Permit Fee $ Other Permit Fee TOTAL Check# `? , f Building Inspector �� U �L �� `'�` s! W U� ��,i . i ` D/ Official Use Only Commoau,¢a6th o�I/(a4sac�e� ,�. �� c7 Permit No. � aLJepartm¢iaE o�Mire services Occupancy and Fee Checked BOARD OF FIRE PREVENTION REGULATIONS [Rev. 1/07] leaveblank LICATION FOR PERMIT TO PERFORM ELECTRICAL WORK All work to be performed in accordance with the Massachusetts Electrical Code(MEC),527 CMR 12.00 (PLEASE PRINT IN INK OR EiLLINFORMAT70A9 Date: 9 ''' l City or Town of: To the Inspector of Wires: By this application the undersigned gives notice of his or her mtentron to perform the electrical work described below. Location(Street&Number) \' �\�-: } ��` Owner or Tenant4YNA) 1 �� Telephone No. , • QItL(O Owner's Address �A p"S a N)\/ e Is this permit in conjunction with a building permit? Yes ❑ No ❑ (Check Appropriate Bog) Purpose of Buildingl�Q fcl�n I LI J )ff),`e. Utility Authorization No. J Existing Service';to Amps GO / `]0 2Volts Overhead ❑ Undgrd❑ No.of Meters New Service Amps / Volts Overhead❑ Undgrd❑ No.of Meters Number of Feeders and Ampacity Location and Nature of Proposed Electrical Work: ` c(* i n M0 09 Completion o the ollowin table may be waived by the Inspector of Wares. No:of Total No.of Recessed Luminaires No.of Ceil.-Susp.(Paddle)Fans Transformers KVA _ _ _ ._ _. _ _ _ Generators KVA No—.UrEmerpency Lighting 9 Battery Units Date.....!..... ..... ..... FIRE ALARMS No.of Zones No.of Detection and NoprH Initiating Devices TOWN OF NORTH ANDOVER No.of Alerting Devices ° p P E R M IT W l Rl'1 G No.of Self- ontained � ( Detectiowme Municipal ❑evices ` ° -; �� r✓ `�Local Other Connection c►+u5�� ecurnZ ity Systems:* ry No.of Devices or Equivalent J . This certifies that ...............�...�..�.... ...................................,...................... Data Wiring:. �7D L /Z �20 No.of Devices or Equivalent has permission to perform . ............. .....�...... �......... Telecommunications mu ......... . No.of Devices or E uiva ent .... ................................................................... wiring m the building of................................... . ....lJ 1 f L yt �� orth Andover,Mass. fired, or as required by the Inspector of Wires. at ....................... ... al policy.) - Fe Lic.No. .... . ............................. ��• ELECTRICAL INSPECTOR C Rule LO and upon completion. ance of electrical work may issue unless Check# rage or its substantial equivalent. The 9 7 n t" the permit issuing office. —� -certify,under the pains an penalties o perjury,t at t e information on this application is nd complete. FIRM NAME: 011-1' �C�\ 't' LIC.NO.,: 1�-I I Licensee: ZUl'lYl 1 '� Signatur LIC.NO.: A- (If applieabl ,enter " empt"in the lice number line.) Bus.Tel.No.:, Address• Alt.Tel.No.:(Qi-4-1�lq 5`1 *Per M.G.L.c. 147,.s.57-6 ,security work requires Department of Public Safety"S"License: Lic.No. OWNER'S INSURANCE WAIVER: I am aware that the Licensee does not have the liability insurance coverage normally e Ru rnvqiPnatu--below I 1— waive this re uirement. I am the check one owner owner's agent. Signature Telephone No. Town of s n ove r No. . T oh ver, Ma01 ss, coc"Ic«ew,cw 1' SAO� TED PQ 1S u BOARD OF HEALTH Food/Kitchen PERMI-T T LD Septic System THIS CERTIFIES THAT .................... 7.! . 'V BUILDING INSPECTOR has permission to erect buildings on .. .. ,I�fid, /� Foundation .......................... ...I �...... ......`/..�. ..... Rough ie to be occupied as ...........Z.Q.L.ft.Aa..........�.. 7ecit ............. ...... ..... ..........1... .. Chimney provided that the person accepting this permit shall in every conform to th rms of the application Final on file in this office, and to the provisions of the Codes and By-Laws relating to the Inspection, Alteration and Construction of Buildings in the Town of North Andover. PLUMBING INSPECTOR VIOLATION of the Zoning or Building Regulations Voids this Permit. Rough Final PERMIT EXPIRES IN 6 MONTHS ELECTRICAL INSPECTOR UNLESS CONSTRUCTIOTA Rough Service ................. ..... ...... ................................. Final BUILDING INSPECTOR GAS INSPECTOR Occupancy Permit Required to Occupy Buildin_z Rough Display in a Conspicuous Place on the Premises — Do Not Remove Final No Lathing or Dry Wall To Be Done FIRE DEPARTMENT Until Inspected and Approved by the Building Inspector. Burner Street No. Smoke Det. Vivint Solar - PV Solar Rooftop System Permit Submittal 1. Proiect Information Project Name: Greg Titus Project Address: 161 Weyland Cir,North Andover MA A.System Description: The array consists of a 7 kW DC roof-mounted Photovoltaic power system operating in parallel with the utility grid.There are(28)250- watt modules and(28)215-watt micro-inverters,mounted on the back of each PV module.The array includes(2)PV circuit(s).The array is mounted to the roof using the engineered racking solution from Ecolibrium Solar. B.Site Design Temperature: (From Lawrence MUNI weather station) Average low temperature: -24.3°C (-11.74°F) Average high temperature: 37.6°C (99.68°F) C. Minimum Design Loads: Ground Snow Load: 50 psf (State Board BR&S) Design Wind Speed: 100 mph (State Board BR&S) 2.Structural Review of PV Array Mounting System: A.System Description: 1.Roof type: Comp.Shingle 2.Method and type of weatherproofing roof penetrations: Flashing B. Mounting System Information: 1.Mounting system is an engineered product designed to mount PV modules 2.For manufactured mounting systems,following information applies: a.Mounting System Manufacturer: Ecolibrium Solar b.Product Name: Ecorail c.Total Weight of PV Modules and mounting hardware: 1204 lbs d.Total number of attachment points: SO e.Weight per attachment point: 24.08 lbs f.Maximum spacing between attachment points: * See attached engineering calfs g.Total surface area of PV array: 493.08 square feet h.Array pounds per square foot: 2.44 lbs/square foot i.Distributed weight of PV array on roof sections: -Roof section 1: (11)modules,(15)attachments 31.53 pounds -Roof section 2: (7)modules,(15)attachments 20.06 pounds per square foot -Roof section 3: (10)modules,(20)attachments 21.5 pounds per square foot t 3. Electrical Components: A. Module (UL 1703 Listed) Qty Trina TSM 250-PA05.18 28 modules Module Specs Pmax-nominal maximum power at STC - 250 watts Vmp-rated voltage at maximum power - 30.3 volts Voc-rated open-circuit voltage - 37.6 volts Imp-rated current at maximum power - 8.27 amps Isc-rate short circuit current - 8.85 amps B. Inverter (UL 1741 listed) Qty Enphase M215-60-2LL-S22 28 inverters Inverter Specs 1. Input Data (DC in) Recommended input power(DC) - 260 watts Max.input DC Voltage - 45 volts Peak power tracking voltage - 22V-36V Min./Max.start voltage - 22V/45V Max.DC short circuit current - 15 amps Max.input current - 10.5 amps 2. Output Data (AC Out) Max.output power - 215 watts Nominal output current - 0.9 amps Nominal voltage - 240 volts Max.units per PV circuit - 17 micro-inverters Max.OCPD rating - 20 amp circuit breaker C.System Configuration Number of PV circuits 2 PV circuit 1 - 17 modules/inverters (20)amp breaker PV circuit 2 - 11 modules/inverters (15)amp breaker 2011 NEC Article 705.60(B) D. Electrical Calculations 1.PV Circuit current PV circuit nominal current 15.3 amps Continuous current adjustment factor 125% 2011 NEC Article 705.60(13) PV circuit continuous current rating 19.125 amps 2.Overcurrent protection device rating PV circuit continuous current rating 19.125 amps Next standard size fuse/breaker to protect conductors 20 amp breaker Use 20 amp AC rated fuse or breaker 3.Conductor conditions of use adjustment(conductor ampacity derate) a.Temperature adder Average high temperature 37.6°C (99.68°F) Conduit is installed 1"above the roof surface Add 22°C to ambient 2011 NEC Article 705.60(13) Adjusted maximum ambient temperature 59.6°C (139.28°F) b.PV Circuit current adjustment for new ambient temperature Derate factor for 59.6°C (139.28°F) 71% 2011 NEC Article 705.60(8) Adjusted PV circuit continuous current 26.9 amps c.PV Circuit current adjustment for conduit fill Number of current-carrying conductors 6 conductors Conduit fill derate factor 80% 2011 NEC Article 705.60(6) Final Adjusted PV circuit continuous current 33.6 amps Total derated ampacity for PV circuit 33.6 amps Conductors(tag2 on 1-line)must be rated for a minimum of 33.6 amps THWN-2(90°C)#10AWG conductor is rated for 40 amps (Use#10AWG or larger) 2011 NEC Article 705.60(8) 4.Voltage drop(keep below 3%total) 2 arts: 1.Voltage drop across longest PV circuit micro-inverters(from modules to j-box) 2.Voltage drop across AC conductors(from j-box to point of interconnection) 1.Mirco-inverter voltage drop: 0.24% The largest number of micro-inverters in a row in the entire array is 9 inCircuit 2.According to manufacturer's specifications this equals a voltage drop of 0.24%. 2.AC conductor voltage drop: =I x R x D (=240 x 100 to convert to percent) _ (Nominal current of largest circuit)x(Resistance of#10AWG copper)x(Total wire run) _ (Circuit 1 nominal current is 15.3 amps)x(0.0012652)x(160D -(240 volts)x(100) 1.28% Total system voltage drop: 1.52% MEcolibriumSoiar Customer Info Name: Email: Phone: Project Info Identifier: 9173 Street Address Line 1: 161 Weyland Cir Street Address Line 2: City: North Andover State: MA Zip: 01845 Country: United States System Info Module Manufacturer: Trina Solar Module Model:TSM-250 PA05.18 Module Quantity: 28 Array Size (DC watts): 7000.0 Mounting System Manufacturer: Ecolibrium Solar Mounting System Product: EcoX Inverter Manufacturer: Enphase Energy Inverter Model: M215 Project Design Variables Module Weight:41.0 lbs Module Length: 64.95 in Module Width: 39.05 in Basic Wind Speed: 110.0 mph Ground Snow Load: 50.0 psf Seismic: 0.0 Exposure Category: B Importance Factor: II Exposure on Roof: Partially Exposed Topographic Factor: 1.0 Thermal Factor for Snow Load: 1.2 Lag Bolt Design Load-Upward: 820 Ibf Lag Bolt Design Load-Lateral: 300 Ibf EcoX Design Load- Downward:493 Ibf EcoX Design Load - Upward: 568 Ibf EcoX Design Load- Downslope: 353 Ibf EcoX Design Load-Lateral: 233 Ibf Module Design Moment—Upward: 3655 in-Ib Module Design Moment—Downward: 3655 in-Ib Effective Wind Area: 20 ft2 Min Nominal Framing Depth: 2.5 in Min Top Chord Specific Gravity: 0.42 Plane Calculations (ASCE 7-10): 2 Roof Type: Composition Shingle Average Roof Height: 35.0 ft Least Horizontal Dimension: 35.0 ft Roof Slope: 38.0 deg Truss Spacing: 16.0 in Edge and Corner Dimension: 3.5 ft Snow Load Calculations Description Interior Edge Corner Unit Flat Roof Snow Load 42.0 42.0 42.0 psf Slope Factor 0.59 0.59 0.59 Roof Snow Load 24.8 24.8 24.8 rpsf71 Wind Pressure Calculations Description Interior Edge Corner Unit Net Design Wind Pressure Uplift -20.7 -24.3 -24.3 psf Net Design Wind Pressure Downforce 19.4 19.4 19.4 psf Adjustment Factor for Height and Exposure Category 1.05 1.05 1.05 Design Wind Pressure Uplift -21.7 -25.5 -25.5 psf Design Wind Pressure Downforce 20.4 20.4 20.4 psf ASD Load Combinations Description Interior Edge Corner Unit Dead Load 2.3 2.3 2.3 psf Snow Load 24.8 24.8 24.8 psf Downslope:Load Combination 3 13.5 13.5 13.5 psf Down: Load Combination 3 17.2 17.2 17.2 psf Down: Load Combination 5 14.1 14.1 14.1 psf Down: Load Combination 6a 22.5 22.5 22.5 psf Up:Load Combination 7 -11.9 -14.2 -14.2 psf P Down Max 22.5 22.5 22.5 psf Spacing Results(Landscape) Description Interior Edge Corner Unit Max Allowable Spacing Between Attachments 69.2 69.2 69.2 in Max Spacing Between Attachments With Rafter/Truss Spacing of 16.0 in 64.0 64.0 64.0 in Max Cantilever from Attachment to Perimeter of PV Array 23.1 23.1 23.1 in Spacing Results(Portrait) Description Interior Edge Corner Unit Max Allowable Spacing Between Attachments 48.5 48.5 48.5 in Max Spacing Between Attachments With Rafter/Truss Spacing of 16.0 in 48.0 48.0 48.0 in Max Cantilever from Attachment to Perimeter of PV Array 16.2 16.2 16.2 in 'Layout Skirt o Coupling Warning: PV Modules may need to be shifted with respect to roof trusses to comply with Clam P maximum allowable overhang. -Plane Calculations (ASCE 7-10): 1 Roof Type: Composition Shingle Average Roof Height: 35.0 ft Least Horizontal Dimension: 35.0 ft Roof Slope: 40.0 deg Truss Spacing: 16.0 in Edge and Corner Dimension: 3.5 ft Snow Load Calculations Description Interior Edge Corner Unit Flat Roof Snow Load 42.0 42.0 42.0 psf Slope Factor 0.55 0.55 0.55 Roof Snow Load 23.1 23.1 23.1 psf Wind Pressure Calculations Description Interior Edge Corner Unit Net Design Wind Pressure Uplift -20.7 -24.3 -24.3 psf Net Design Wind Pressure Downforce 19.4 19.4 19.4 psf Adjustment Factor for Height and Exposure Category 1.05 1.05 1.05 Design Wind Pressure Uplift -21.7 -25.5 -25.5 psf Design Wind Pressure Downforce 20.4 20.4 20.4 psf ASD Load Combinations Description Interior Edge Corner Unit Dead Load 2.3 2.3 2.3 psf Snow Load 23.1 23.1 23.1 psf Downslope: Load Combination 3 12.9 12.9 12.9 psf Down:Load Combination 3 15.3 15.3 15.3 psf Down:Load Combination 5 14.0 14.0 14.0 psf Down: Load Combination 6a 21.1 21.1 21.1 psf Up: Load Combination 7 -12.0 -14.2 -14.2 psf Down Max 21.1 21.1 21.1 psf Spacing Results(Landscape) Description Interior Edge Corner Unit Max Allowable Spacing Between Attachments 71.5 71.5 71.5 in Max Spacing Between Attachments With Rafter/Truss Spacing of 16.0 in 64.0 64.0 64.0 in Max Cantilever from Attachment to Perimeter of PV Array 23.8 23.8 23.8 in Spacing Results(Portrait) Description Interior Edge Corner Unit Max Allowable Spacing Between Attachments 51.7 51.7 51.7 in Max Spacing Between Attachments With Rafter/Truss Spacing of 16.0 in 48.0 48.0 48.0 in Max Cantilever from Attachment to Perimeter of PV Array 17.2 17.2 17.2 in 'Layout Skirt o Coupling Warning: PV Modules may need to be shifted with respect to roof trusses to comply with 0 Clamp maximum allowable overhang. ii Plane Calculations (ASCE 7-10): 3 Roof Type: Composition Shingle Average Roof Height: 35.0 ft Least Horizontal Dimension: 35.0 ft Roof Slope:42.0 deg Truss Spacing: 16.0 in Edge and Corner Dimension: 3.5 ft Snow Load Calculations Description Interior Edge Corner Unit Flat Roof Snow Load 42.0 42.0 42.0 psf Slope Factor 0.51 0.51 0.51 Roof Snow Load 21.4 21.4 21.4 psf Wind Pressure Calculations Description Interior Edge Corner Unit Net Design Wind Pressure Uplift -20.7 -24.3 -24.3 psf Net Design Wind Pressure Downforce 19.4 19.4 19.4 psf Adjustment Factor for Height and Exposure Category 1.05 1.05 1.05 Design Wind Pressure Uplift -21.7 -25.5 -25.5 psf Design Wind Pressure Downforce 20.4 20.4 20.4 psf ASD Load Combinations Description Interior Edge Corner Unit Dead Load 2.3 2.3 2.3 psf Snow Load 21.4 21.4 21.4 psf Downslope: Load Combination 3 12.2 12.2 12.2 psf Down: Load Combination 3 13.6 13.6 13.6 psf Down: Load Combination 5 14.0 14.0 14.0 psf Down: Load Combination 6a 19.8 19.8 19.8 psf Up: Load Combination 7 -12.0 -14.3 -14.3 psf Down Max 19.8 19.8 19.8 psf Spacing Results(Landscape) Description Interior Edge Corner Unit Max Allowable Spacing Between Attachments 73.9 73.9 73.9 in Max Spacing Between Attachments With Rafter/Truss Spacing of 16.0 in 64.0 64.0 64.0 in Max Cantilever from Attachment to Perimeter of PV Array 24.6 24.6 24.6 in Spacing Results(Portrait) Description Interior Edge Corner Unit Max Allowable Spacing Between Attachments 54.5 54.5 54.5 in Max Spacing Between Attachments With Rafter/Truss Spacing of 16.0 in 48.0 48.0 48.0 in Max Cantilever from Attachment to Perimeter of PV Array 18.2 18.2 18.2 in 'Layout d! Skirt o Coupling Warning: PV Modules may need to be shifted with respect to roof trusses to comply with Clamp maximum allowable overhang. •Distributed Weight (All Planes) In Conformance with Solar ABC's Expedited Permit Process for PV System (EPP) Weight of Modules: 1148 lbs Weight of Mounting System: 100 lbs Total System Weight: 1248 lbs Total Array Area:493 ft2 Distributed Weight: 2.53 psf Number of Attachments: 50 Weight per Attachment Point: 25 lbs Bill Of Materials Part Name Quantity ESEG01 CLASA EcoX Clamp Assembly 50 ESEG01 COASA EcoX Coupling Assembly 26 ESEG01 SKKTA EcoX Landscape Skirt Kit 10 ESEG01SKKTA EcoX Portrait Skirt Kit 4 ESEG01 CPKTA EcoX Composition Attachment Kit 50 ESEG01 ELASA EcoX Electrical Assembly 3 l V V o n�0 4931 north 300West Structural Group Provo,UT 84604 P: (801)234-7050 Scott E. Wyssling, PE Head of Structural Engineering scott.wyssling@vivintsolar.com August 25,2014 Mr. Dan Rock, Project Manager Vivint Solar 24 Normac Road Woburn MA 01801 Re: Structural Engineering Services Titus Residence 161 Weyland Circle, North Andover MA AR#3218794 7.25 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 partially finished 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/SEl 7-10 Minimum Design Loads for Buildings and other Structures, wind speed of 100 mph based on Exposure Category"B" and 40, 38 and 42 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. WNOIR�o P_ 11 ` Page 2of2 B. Loading Criteria • 10 PSF= Dead Load roofing/framing 50 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. 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 la screw is 235 lbs/inch of penetration as identified in the p p 9 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 truly yours, �NOFMq c G 42 • E Y � G0 1V1 50 Scott E.Wyssl' , PE MA License N .50 9a� FGIST FSSIONAIF V �V��o 161 Weyland Cir, North Andover MA 01845 �a -vL)Qw m c a��>Z 80'OF 1"PVC CONDUIT V INTERCONNECTION POINT, a 1- FROM—JUNCTION B—OX TO — — — — — — — — —ELEC PANEL LOCKABLE DISCONNECT SWITCH, — — — Q¢0 ANSI METER LOCATION, '0 &UTILITY METER LOCATION I z° I I I JUNCTION BOX ATTACHED TO I ARRAY USING ECO HARDWARE TO KEEP JUNCTION BOX OFF ROOF I I I PV SYSTEM SIZE: I I 7.00 kW DC 0 I I 4O�r- N N I I I I J N O N Q U LU I (28)Trina Solar TSM-250 PA05.18 MODULES WITH A 1 z 00 < Enphase M215-60-2LL-S2x-ZC MICRO-INVERTER > > m w MOUNTED ON THE BACK OF EACH MODULE — z uj wwzcow w z m w z L— —— —— — — ——— — —— — — —— —— —— —————— ——— _U En U] Q a SHEET NAME: Lu Z t- J CL SHEET NUMBER: 3 PV SYSTEM SITE PLAN o SCALE: 3/32"= V-0" > o N N n O. G.1 O V� 0— Fn O Q 000 n C a U) �� O 3( w3 o�fD a-1 om NO A 11 0 ZJ �C m N cn. n O 3 to 2 z G) m O O 3 n D C �O ' .. N W m m II � X O O m T r D Z c i D i INSTALLER:VIVINT SOLAR O O K- m 3 m INSTALLER NUMBER:1.877.404.4129 �,+�n/ [��/ ��'(��nI7 Titus Residence P�/ O m� ROOF !n MA LICENSE:MAHIC 170848 1J Duo a LJ lJ U O 161 Weyland Cir V A PLAN DRAWN BY:EF AR 3218794 Last Modified:8/21/2014 UTILITY ACCOUNT NUMBER,91027-92011 CLAMP MOUNTING SEALING N PV3.0 DETAIL WASHER o LOWER .0 A= SUPPORT PV MODULES, TYP. MOUNT �a0 U OF COMP SHINGLE ROOF, FLASHING =3 Z< PARALLEL TO ROOF PLANE / 31 I- D 5/16"0 x 4 1/2" MINIMUM PV ARRAY TYP. ELEVATION STEEL AG SCR WS NOT TO SCALE TORQUE= 13±2 ft-lbs CLAMP ATTACHMENT NOT TO SCALE N CLAMP+ ATTACHMENT CANTELEVER L/4 OR LESS COUPLING L=PERMITTED CLAMP ECO SPACING SEE CODE COMPLIANT COMPATIBLE LETTER FOR MAX ALLOWABLE N MODULE CLAMP SPACING. COUPLING N PERMITTED o CLAMP+ 0 a CLAMP CLAMP 0 ATTACHMENT SPACING z m CI COUPLING PHOTOVOLTAIC MODULE > M � w Z W .. wzco W j J Z Z U F F J Q Z Z < O SHEET NAME: L=PORTRAIT U) CLAMP SPACING Z Q ECO 2 0 COMPATIBLE SHEET L=LANDSCAPE MODULE PV SYSTEM MOUNTING DETAIL NUMBER: CLAMP SPACING MODULES IN PORTRAIT/LANDSCAPE NOT TO SCALE M NOT TO SCALE a Inverter Ratings(Guide Section 4) Conduit and Conductor Schedule Inverter Make/Model Enphase M215-60-2U_-S2x-ZC Tag Description Wire Gauge #of Conductors Conduit Type Conduit Size MODULE DETAIL Max DC Volt Rating 45 voles Max Power @ 40°C 215 Watts 1 Enphase engage cable-THWN-2 12 AWG 4 Cob N/A-Free Air Nominal AC Voltage 240 Volts 1 Bare Copper Ground(EGC/GEC) 6 AWG 1 N/A-Free Air N/A-Free Air Q N Trina Solar TSM-250PA05.18 Max AC Current 0.9 Ampsp THWN-2 10AWG 6 PVC 07 U CPSOLAR MODULE Max OCPD Rating 20 Amps 1 2 THWN-2-Ground 8 AWG PVC 0'7 to 0 Max Number of Panels/Cirmil 17 O F 3 THWN-2 8AWG 3 PVC 0'-1" mrn `p NOTES FOR INVERTER CIRCUITS(Guide Section 8 and 9): 3 THWN-2-Ground 8 AWG 1 PVC 0'-1" U<ul!Y 1.)IF UTILITY REQUIRES A VISIBLE-BREAK SWITCH,DOES THIS •U)m PV Module Ratings @STC(Guide Section 5) Enphase M215-60-2LL-S2x-ZC SWITCH MEET THE REQUIREMENTS? -s,0 Z MICRO-INVERTER AT YES NO X NA Model Make/Model Trina Solar TSM-250 PA05.18 Max Power-Point Current(Imp) 8.27 Amps EACH MODULE,ATTACHED (c<.Z7 2.)IF GENERATION METER REQUIRED,DOES THIS METER Max Power-Point Voltage(Vmp) 30.3 Volts t O WITH ECO HARDWARE SOCKET MEET THE REQUIREMENTS? U)�'f O Open-Circuit Voltage(Voc) 37.6 Volts 00 YES NO X NA Short-Circuit Current(Isc) 8.85 Amps Z< 3.)SIZE PHOTOVOLTAIC POWER SOURCE(DC)CONDUCTORS Max Series Fuse(OCPD) 15 Amps BASED ON MAX CURRENT ON NEC 690.53 SIGN OR OCPD lNominal Maximum Power at STC(Pmax) 250 Watts —' MICROINVERTER CONNECTIONRATING AT DISCONNECT. Maximum System Voltage 1000(IEC)/600(UL) j TO ENGAGE TRUNK CABLE 4.)SIZE INVERTER OUTPUT(AC)CONDUCTORS ACCORDING Voc Temperature Coefficient -0.32 %/°C ^ TO INVERTER OCPD AMPERE RATING(See Guide Section 9). V 5.)TOTAL OF 2 INVERTER OCPD(s).ONE FOR EACH NOTES FOR ARRAY CIRCUIT WIRING(Guide Section 6 and 8 and Appendix D): PV CIRCUIT.DOES TOTAL SUPPLY BREAKERS COMPLY WITH 120%BUSBAR EXCEPTION IN 1.)Lowest expected ambient temperature based on ASHRAE minimum mean extreme NEC 690.64(B)(2)(a)? X YES NO dry bulb temperature for ASHRAE location most similar to installaflon location: -19°C #6 BARE CU GROUND ' _— -- --—-- -- ---- ------ (GROUNDING ARRAY) r Signs(See Guide Section 7) 2.)Highest continuous ambient temperature based on ASHRAE highest month 2%dry bulb temperature for ASHRAE location 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 roof-mounted sunlit conduit at least 0.5"above roof and using the outdoor design AC Output Current 25.200000 Amps temperature of 47°C or less(all of United States). — d Nominal AC Voltage 240 Volts a.)12 AWG,90°C conductors are generally acceptable for modules with Isc of 7.68 Amps or less when protected by a 12-Amp or smaller fuse. N THIS PANEL FED BY MULTIPLE SOURCES (UTILITY AND SOLAR) b.)10 AWG,90°C conductors are generally acceptable for modules with Isc of 9.6 Amps N or less when protected by a 15-Amp or smaller fuse. O NOTE: NEUTRAL CONDUCTOR(S)OMITTED FOR CLARITY ALL INVERTER OUTPUT CIRCUITS WILL HAVE A NEUTRAL CONDUCTOR _ y to N R PV CIRCUIT 1: 17 MODULES/PARALLEL ENVOY BOX JOno, p M 17 • • • O (D vOi IY U < 1 RWP Z � = s s s E 1.o HURRAY POINT OF DELIVERY X W. m} C COMBINER AND INTERCONNECTION 11.1 J w co \ti0 SO PANEL 125A/240V SIEMENS < < 3 —� \G G LWo04NR 60A/240V (n (nn < Of OR EQUIVALENT UNFUSED NEMA3 Z Z 2 O\<t\ <' LNF222R OR SHEET PV CIRCUIT 2: 11 MODULES/PARALLEL �}\frtnL +5 SREC/ANSI EQUIVALENT IR NAME: pA\t< t( METER \O EXISTING tt • • • Q O i \� zooC 240V/200A Z ly \ 20A LOAD-CENTER J 0 15A M 0 J' • • • `/` J' j \ 4 AA SHEET x NUMBER: --- -- ---- ---- ------ -- ----- — ------ --- ---- ------- ---- ----- ------ t \\ MILBANK OA OR VISIBLE/LOCKABLE O JUNCTION BOX 2 \ 3 3 'KNIFE'AIC 3 r 2014 Compliant WITH IRREVERSIBLE E 1.0 \ EQUIVALENT DISCONNECT NEC GROUND SPLICE E 1.0 U5934-XL-BLG E 1.0 E 1.0 LIJ �1R1Y4, Va % uiisL4111l,1 c-igiaiia aiiL5 ILDu3111�,JJ v,%,6l.1laLlull t 10 Park Plaza - Suite 5170 Boston, Massachusetts 02116 Horne Improvement Contractor Registration Registration: 170848 Type: Supplement Card VIV1NT SOLAR DEVELOPER LLC. Expiration: 1/5/2016 ,TAMES SHERMAN 4931 NORTH 300 WEST PROVO, UT 84604 Update Address and return card.Mark reason for change. SCA 1 0 20M-05/11 Address Renewal Employment Lost Card Massachusetts-Department of Public Safety Board of Building Regulations and Standards Construction SuperN icor License:CS-045254 , JAWS RS1I ER1N1%.A , 6 Fox Hollow Dri* SAUGUS MA 01406 J� ti►'4 P- Expiration .J,�..--�J/S�c-• ' " Commissioner 0$12812016 The Commonwealth of Massachusetts � Department of IndustrialAccidents } Office of Investigations 1 Congress Street,Suite 100 Boston,MA 02114-2017 www mass.g ov/dia Workers' Compensation Insurance Affidavit: Builders/Contractors/Electricians/Plumbers Applicant Information Please Print Le ibl Name (Business/Organization/Individual): Vivint Solar Developer, LLC Address: 4931 North 300 West , h3 Citv'State,'Zip:_ Provo, UT 84604 Phone#: 8.01-704-9389 Are you an employer?Check the appropriate box: Type of project(required): I.[K I am a employer with 10 4. ❑ I am a general contractor and I * have Fired the sub-contractors 6. L]New construction employees(full and/or part-time). 2.❑ I am a sole proprietor or partner- listed on the attached sheet. 7. ❑ Remodeling ship and have no employees These sub-contractors have 8. ❑ Demolition working for me in any capacity. employees and have workers' t i [No workers' comp. insurance comp. insurance. 9. ❑ Building addition i required.] 5. ❑ We are a corporation and its 10.F-1 Electrical repairs or additions 3.❑ I am a homeowner doing all workofficers have exercised their t 1 l.❑ Plumbing repairs or additions myself �o workerscomp.' right of exemption per MGL Y 12.❑ Roof repairs insurance required.] t c. 152, §I(4),and we have no 13.❑ Other_ # employees. [No workers' comp. insurance required.] *Any applicant that checks box#I must also fill out the section below showing their workers'compensation policy information. t Homeowners who submit this affidavit indicating they are doing all work and then hire outside contractors must submit a new affidavit indicating such. tContractors that check this box must attached an additional sheet showing the name of the sub-contractors and state whether or not those entities have employees. If the sub-contractors have employees,they must provide their workers'comp-policy number i I am an employer that is providing workers'compensation insurance for my employees. Below is the policy and job site i fi information. Insurance Company Name:,New Ha_mpshire Insurance Company_ _ _ Policy#or Self-ins. Lic. #: 029342228 Expiration Date: 11/01/14 r Job Site Address: City/State/Zip:_N Y Attach a copy of the workers' compensation policy declaration page(showing the policy number and expiration date). Failure to secure coverage as required under Section 25A of MGL c. 152 can lead to the imposition of criminal penalties of a fine up to$1,500.00 and/or one-year imprisonment, as well as civil penalties in the form of a STOP WORK ORDER and a fine of up to$250.00 a day against the violator. Be advised that a copy of this statement may be forwarded to the Office of Investigations of the DIA for insurance coverage verification. I do hereby certify under Pains .:enawr . .raf pe��, hnformation provided above is true and correct r Date: Phone i- 01-704-9389 Official use only. Do not write in this area,to be completed by city or town official. k City or Town: Permit/License# Issuing Authority(circle one): 1.Board of Health 2.Building Department 3.City/Town Clerk 4.Electrical Inspector 5.Plumbing Inspector 6.Other Contact Person: Phone#: ACORE1110112013P CERTIFICATE OF LIABILITY INSURANCE DATE/2013 IYYYY) 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: If the certificate holder is an ADDITIONAL INSURED,the policy(les)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 endorsement(s). PRODUCER CONTACT MARSH USA INC. NAME' 122517TH STREET,SUITE 1300 actino Ext)* ac No): DENVER,CO 80202-5534 ADDRESS: Attn:Denver.certrequest@marsh.com,Fax:212.948.4381 INSURE S AFFORDING COVERAGE NAIC# 462738-STND-GAWUE-13-14 INSURER A:Evanston Insurance Company 35378 INSURED INSURER B:National Union Fire Insurance Co of PA 931 Solar,Inc. 4NH 4931 N 300 W INSURER C: ew Hampshire Insurance Company 23841 Provo,UT 84604 INSURER D INSURER E: INSURER F: COVERAGES CERTIFICATE NUMBER: SEA-002368004-06 REVISION NUMBER:I 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 TYPE OF INSURANCE ADDL SUBR POLICY EFF POLICY EXP LTR POLICY NUMBER MMIDD MM/DD/YYYY LIMITS A GENERAL LIABILITY 13PKGWE00274 11/01/2013 11/0112014 EACH OCCURRENCE $ 1,000,000 X COMMERCIAL GENERAL LIABILITY DAMA 50 000 PREMISES Ea occurrence $ CLAIMS-MADE I-q OCCUR MED EXP(Any one person) $ 5,000 PERSONAL&ADV INJURY $ 1,000,000 GENERAL AGGREGATE $ 2,000,000 GEN'L AGGREGATE LIMIT APPLIES PER: PRODUCTS-COMP/OP AGG $ 2,000,000 X POLICY JECTPRO LOC $ B AUTOMOBILE LIABILITY 9701087 11/01/2013 11/01/2014 COMBINED SINGLE LIMIT 1,000,000 Ea accident $ B X ANY AUTO 9701088 11/0112013 1110112014 BODILY INJURY(Per person) $ ALL OWNED SCHEDULED tid BODILY INJURY Per accident) $ AUTOS AUTOS ( ) X HIRED AUTOS X NON-OWNED PROPERTY DAMAGE $ AUTOS Per accident $ A UMBRELLA LIAB X OCCUR 13EFXWE00088 11/0112013 11101/2014 EACH OCCURRENCE $ 10,000,000 X EXCESS LIAR CLAIMS-MADE AGGREGATE $ 10,000,000 DED RETENTION$ $ C WORKERS COMPENSATION 029342334; 029342335 11/0112013 1110112014X wC STATu- OTH- AND EMPLOYERS'LIABILITYI ER C ANY PROPRIETOR/PARTNER/EXECUTIVE Y/N 029342336; 029342337 1110112013 11/01!2014 1,000,000 OFFICERIMEMBER EXCLUDED? N/A E.L.EACH ACCIDENT $ C (Mandatory In NH) 029342338 11101/2013 11/01/2014 E.L.DISEASE-EA EMPLOYE $ 1,000,000 If yes,describe under 1,000,000 DESCRIPTION OF OPERATIONS below E.L.DISEASE-POLICY LIMIT $ A Errors&Omissions& 13PKGW00029 1110112013 11/01/2014 LIMIT 1,000,000 Contractors Pollution DEDUCTIBLE 5,000 DESCRIPTION OF OPERATIONS/LOCATIONS/VEHICLES (Attach ACORD 101,Additional Remarks Schedule,if more space Is required) The Certificate Holder and others as defined in the written agreement are included as additional insured where required by written contract with respect to General Liability.This insurance is primary and non- contributory over any existing insurance and limited to liability arising out of the operations of the named insured and where required by written contract.Waiver of subrogation is applicable where required by written contract with respect to General Liability and Workers Compensation. CERTIFICATE HOLDER CANCELLATION Town of Andover SHOULD ANY OF THE ABOVE DESCRIBED POLICIES BE CANCELLED BEFORE 36 Bartlett Street THE EXPIRATION DATE THEREOF, NOTICE WILL BE DELIVERED IN Andover,MA 01810 ACCORDANCE WITH THE POLICY PROVISIONS. AUTHORIZED REPRESENTATIVE of Marsh USA Inc. Kathleen M.Parsloe t- 4441 G @ 1988-2010 ACORD CORPORATION. All rights reserved. ACORD 25(2010/05) The ACORD name and logo are registered marks of ACORD