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29-594 (4) 142 WOODS RD BP-2017-1450 GIS rt: COMMONWEALTH OF MASSACHUSETTS Map:Block:29-594 CITY OF NORTHAMPTON Lot:-001 PERSONS CONTRACTING WITH UNREGISTERED CONTRACTORS Permit: Building DO NOT HAVE ACCESS TO THE GUARANTY FUND (MGL c.142A) Category: SOLAR ELECTRIC SYSTEM BUILDING PERMIT Permit it BP-2017-1450 Project# JS-2017-002414 Est.Cost:$32390.00 Fee:$75.00 PERMISSION IS HEREBY GRANTED TO: Const.Class: Contractor: License: Use Group: VALLEY SOLAR LLC 110400 Lot Size(sq.ft.): 20865.24 Owner: KONCKI DAVID E&SHARRON GIFFORD Zoning: Applicant: VALLEY SOLAR LLC AT: 142 WOODS RD Applicant Address: Phone: Insurance: PO BOX 60627 (413) 584-8844 WC FLORENCEMA01062 ISSUED ON:6/20/2017 0:00:00 TO PERFORM THE FOLLOWING WORK 33 PANEL ROOF MOUNTED SOLAR SYSTEM - 10.395KW POST THIS CARD SO IT IS VISIBLE FROM THE STREET Inspector of Plumbing Inspector of Wiring D.P.W. Building Inspector Underground: Service: Meter: Footings: Rough: Rough: House# Foundation: Driveway Final: Final: Final: Rough Frame: Gas: Fire Department Fireplace/Chimney: Rough: Oil: Insulation: Final: Smoke: Final: THIS PERMIT MAY BE REVOKED BY THE CITY OF NORTHAMPTON UPON VIOLATION OF ANY OF ITS RULES AND REGULATIONS. Certificate of Occupancy Signature: FeeType: Date Paid: Amount: Building 6/20/2017 0:00:00 $75.00 212 Main Street, Phone(413)587-1240,Fax:(413)587-1272 Louis Hasbrouck—Building Commissioner File#BP-2017-1450 APPLICANT/CONTACT PERSON VALLEY SOLAR LLC ADDRESS/PHONE PO BOX 60627 FLORENCE (413)584-8844 PROPERTY LOCATION 142 WOODS RD MAP 29 PARCEL 594 001 ZONE THIS SECTION FOR OFFICIAL,USE ONLY: PERMIT APPLICATION CHECKLIST CLOSED REQUIRED DATE ZONING FORM FILLED OUT Fee Paid {I 16 Building Permit Filled out 9"4t Fee Paid �.+,� T ,eofCon n ction: 33 PANEL ROOF Mk LE'D SOLAR SYSTEM- 10.395KW New Construction Non Structural interior renovations Addition to Existin, Accessory Structure Building Plans Included: Owner/Statement or License 110400 3 sets of Plans/Plot Plan THE FOLLOWING ACTION HAS BEEN TAKEN ON THIS APPLICATION BASED ON INFQRMATION PRESENTED: iz'Approved Additional permits required(see below) PLANNING BOARD PERMIT REQUIRED UNDER:§ Intermediate Project: Site Plan AND/OR Special Permit With Site Plan Major Project: Site Plan AND/OR Special Permit With Site Plan ZONING BOARD PERMIT REQUIRED UNDER: § Finding, Special Permit Variance* Received&Recorded at Registry of Deeds Proof Enclosed Other Permits Required: ,Curb Cut from DPW Water Availability Sewer Availability Septic Approval Board of Health Well Water Potability Board of Health Permit from Conservation Commission Permit from CB Architecture Committee Permit from Elm Street Commission Permit DPW Storm Water Management :20,1 lition Uelay q Imre of Building Official Date Note: Issuance Ma Zoning permit does not relieve a applicant's burden to comply with all zoning requirements and obtain all required permits from Board of Health,Conservation Commission,Department of public works and other applicable permit granting authorities. " Variances are granted only to those applicants who meet the strict standards of MOL 40A.Contact Office of Planning&Development for more information. \ Department use only City of Northampton Status of Permit Building Department Curb Cut/Driveway Permit_ n 212 Main Street Sewer/Septic Availability (o -3 Room 100 Water/Well Availability \\ orthampton, MA 01060 Two Sets of Structural Plans pAdne 413.587-1240 Fax 413-587-1272 Plot/Site Plans Other Specify LIGATION TO CONSTRUCT,ALTER.REPAIR,RENOVATE OR DEMOLISH ryryA}ONE OR TWO FAMILY DWELLING / SECTION 1 -SITE INFORMATION (0 1 S14-(A) DC- ( .??P j r\ IOW A 1.1 Property Address. /./This section to be corn etteed by office 1t{2 )ODDS P_D . t_oT id Map ,p5/ Lot " /7 Unit ti"LC2t`_ aCE MA 01062 Zone Overlay District Elm St.District CS District SECTION 2-PROPERTY OWNERSHIP/AUTHORIZED AGENT 2.1 Owner of Recorrt: 1-7. Au tD Cc, I<urC/cT ......- / .�s . ,r„E ■ • .r, r C" • y11k2 Name(Print) s. '/ Cyrrent ailin9 Address: Telephone Svgneture 2.2 Authorized Anent 0 Vnt-LEN Sts MC_ tXC.LoturC ZEA.¢Oos+_ fD 001 6o62_21-, cc r.Ii &4o10W Name(Print) Current Mailing Address: • (-tt3 - 684 Signature Telephone SECTION 3-ESTIMATED CONSTRUCTION COSTS Item Estimated Cost(Dollars)to be Official Use Only completed by permit applicant 1. Building (a)Building Permit Fee 2. Electrical (b)Estimated Total Cost of Construction from(6) 3. Plumbing Building Permit Fee 4. Mechanical(HVAC) 5.Fire Protection n*�Q ,f� 6. Total-(1 +2+3+4+5) +32-, .S FQ - Check Number eg 0/01,, % 776 This Section For Official Use Only Building Permit Number: Date Issued: Signature: Budding Commissianemnspector of Buildings Date Section 4. ZONING ALL Information Must Be Completed. Permit Can Be Denied Due To Incomplete Information Required by Zoning iiiii � This column to be fitted in by !, Building Depanment Setbacks Front Side Mal Rear Open Space Footage ® !iiiiii� (Lot area mimes bldg&paved .arkio: A. Has a Special Permit/Variance/Finding ever been issued for/on the site? NO O DONT KNOW 0 YES 0 IF YES, date issued: IF YES: Was the permit recorded at the Registry of Deeds? NO O DONT KNOW 0 YES O IF YES: enter Book Page andtor Document N B. Does the site contain a brook, body of water or wetlands? NO lJ DONT KNOW O YES O IF YES, has a permit been or need to be obtained from the Conservation Commission? Needs to be obtained O Obtained , Date Issued: C. Do any signs exist on the property? YES O NO O IF YES, describe size, type and Location: D. Are there any proposed changes to or additions of signs intended for the property? YES U NO O IF YES, describe size, type and location: E. Will the construction activity disturb(clearing,grading,excavation,or filling)over 1 acre or is it part of a common plan that will disturb over 1 acre? YES O NO O IF YES,then a Northampton Storm Water Management Permit from the DPW is required. • SECTION 5-DESCRIPTION OF PROPOSED WORK(check all aonIIcable) New House ❑ Addition ❑ Replacement Windows Alteration(s) n Roofing ❑ Or Doors 0 Accessory Bldg. ❑ Demolition ❑ New Signs [Dl Decks [Cj Siding[0] Other K. Brief De "scr�f ion of Proposed ' 'f Work: LIDlNNte•- - 'C SerlibC -SMST6A4 32. Pc t0.3e1S k 3 DC. Alteration of existing bedroom Yes No Adding new bedroom Yes No Attached Narrative Renovating unfinished basement Yes No Plans Attached Roll -Sheet 6a.If New house and or addition to existing housing. complete the following: a. Use of building:One Family Two Family Other b. Number of rooms In each family unit Number of Bathrooms c. Is there a garage attached? d. Proposed Square footage of new construction. Dimensions e. Number of stories? f. Method of heating? Fireplaces or Woodstoves .Number of each g. Energy Conservation Compliance. „Masscheck Energy Compliance form attached? h. Type of construction Is construction within 100 ft.of wetlands? Yes No. Is construction within 100 yr. floodplain Yes_No j. Depth of basement or cellar floor below finished grade k. Will building conform to the Building and Zoning regulations? Yes No. I. Septic Tank _ City City Sewer Private well City water Supply SECTION 7a-OWNER AUTHORIZATION•TO BE COMPLETED WHEN OWNERS AGENT OR CONTRACTOR APPLIES FOR BUILDING PERMIT I, b4Jto te'. t ur c/( r .as Owner of the subject property' hereby authorize VAh-l.-E`1 391_flC._ L I C to aacctt on pmy behalf,in inall smatters relative to work authorized by this building permit application. 4t'-'Vl !. l`+'"«t` J / L) Signature of Owner Date I. (...>51Md�c es/log-(14"N ro,F. (j 4tt.E"t £LSvfl-t_ t__ ,as Owner/Authorized Agent hereby declare that the statements and information on the foregoing application are true and accurate,to the best of my knowledge and belief. Signed under the pains and penalties of perjury. 1VwYc. Q--serrezveJ Print Name r ' 1 . bwt.+ . Signature of Owner/Agent !' — Date SECTION 8-CONSTRUCTION SERVICES 8.1 Licensed Construction Supervisor: __a ,�p , Not Applicable Ci Name of License Nolder: L-r'lVr- +' +iACay—tS - 1-?.? {i0400 License Number Zia ikcs-e€ sr. ager,t,afleLo. NA 0130 04 I i i 12020 Address Expiration Date 4/4.--- 413- 624 - 9GiUUS _ Sig , + . Telephone S.Repistered Home Improvement Contractor: Not Applicable 0 1/A-LL -1 Srnjkz LAX. l812338' Co Na Registration Number 0 $ux 6062 , fi.oel=c.;t.€ AAA- 01062 IQ ( ? 1201 e Address Expiration Date Telephoneyl3,-584 -&Xi4 SECTION 19-WORKERS'COMPENSATION INSURANCE AFFIDAVIT(M.O.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 build'99 permit. Signed Affidavit Attached Yes H No 0 11. - Home Owner Exemption The current exemption for"homeowners"was extended to include Owner-occupied Dwellings of one(1) or two(2)families and to allow such homeowner to engage an individual for hire who does not possess a license,provided that the owner sets as supervisor.CMR 788. Sixth Edition Section 188.3.5.1. Definition of Homeowner:Person(s)who own a parcel of land on which he/she resides or intends to reside,on which there is,oris intended to be,a one or two family dwelling,attached or detached structures accessory to such use and/or farm structures. A person who constructs more than one home in a two-year period shall not be considered a homeowner. Such"homeowner"shall submit to the Building Official,on a form acceptable to the Building Official that he/she shall be responsible for all such work performed under the bnildine perwit. As acting Construction Supervisor your presence on the job site will be required from time to time,during and upon completion of the work for which this permit is issued. Also be advised that with reference to Chapter 152(Workers'Compensation) and Chapter 153 (Liability of Employers to Employees for injuries not resulting in Death)of the Massachusetts General Laws Annotated,you may be liable for person(s) you hire to perform work for you under this permit. The undersigned"homeowner"certifies and assumes responsibility for compliance with the State Building Code,City of Northampton Ordinances,State and Local Zoning Laws and State of Massachusetts General Laws Annotated, Homeowner Signature City of Northampton • G� 4 Massachusetts ss. ' d A, ; d I ! ofDSPANTMENT OP BUILDING INSPSCTLONS t` 212 Main Strast •Municipal en Nang �c .' Northampton, em 91069 cW yyv Debris Disposal Affidavit In accordance of the provisions of MGL c 40, S54, I acknowledge that as a condition of the building permit all debris resulting from the construction activity governed by this Building Permit shall be disposed of in a properly licensed solid waste disposal facility, as defined by MGL c 111, S 150A. The debris from construction work being performed at: 1+�2 Waodi L Lair tr. (Please print house number and street name) Is to be disposed of at: Vc (P ase print n r.Cp e and I ation of facility) Or will be disposed of in a dumpster onsite rented or leased from: Ve:t,Q.Otd SGt,t4 U_C (Company Name and Address) r Signature • Pe it Applicant or Owner Dat 1 if, for any reason, the debris will not be disposed of as indicated,the Applicant or Owner shall notify the Building Department as to the location where the debris will be disposed. The Commonwealth ofMassachusetts _ Department of Industrial Accidents 1 Congress Street,Suite 100 Boston,MA 02114-2017 wwwtnass.gov/dirt tturkers'Compensation Insurance Affidavit: Builders/Contractors/Electricians/Plumbers. TO HE FILED to ITR THE PERMITTING AUTHORITY. Applicant Information Please Print Legible Name tau.s:nets Organization Inds idual)Valley Solar LLC Address:340 Riverside Dr., PO Box 60627 City State,Zip:Florence, MA 01062 Phone a:413-584-8844 Ire you an employer"Check the appropriate hat: Type of project (required). 0 I ant a eintslomt with 6 �loe:c; h- :•crpae-limo�' 7 0 New construction {ama I1 p rpnn tp and pi, s .a.Nl ^.❑ .rm. 8. ❑ Remodeling ynce pacm :No workerCcomp insurance raquired. 9 Demolition .❑Iurn 1 work nit tell 1391 orkers amnp mammas too ersd'l" a OtaI —i'. c ts ope ty" !..Sit lU ❑Built-line addition .n.-- n ontact,JIM otherlmva!sorbets compensation n dor a-e role II.0 Electrical repair!,or additions proprietors with no cmplovcti, 12.0 Plumbing repahs or additions S E I am a general sontrami ant.I h d th b the ,inched sheet Thea sub—mucus-ors hat pl s aide —kers comp t _ 1._❑RObf repays 14,a OtherSolaf 6.❑Wearca coY.xmion and its officcn bac:rtiemciced:ha:am:Hot ex goon pap GIG!.. - 152.cit4i.and ye have no rmillovccs.!No a ork'trs'comp MNitranCj reonir:d.l Any applicant the chucks box n0.a also OH out F.section btlo'v showing thc:i o.ker "compensation p ntommron, .._. H<nteo'ncs whosubmit this a: : 'lindicating: a doing all rk aJ then hire outsidc contractor!m t_.:bmit o rev attidain indieNftp.such. tinotracrers shut ultes9 this boa mote attached an additional Atmshowing a fthe- b- . cors and stab: .hater or not the anus hie -;plescgs If he ., xiors ave e tplo ves.thus me mattae thanant-kers'comppolicy numberpm . I am an employer that is pro riding workers'compensation insurance for my employees. Below is the policy and fob she information. Insurance Company Name:Berkley Insurance Policy or Self-ins. Lie._..MAARP301229 Expiration Da[c.:211118 Job Site Address'1k2 (nT6tOS tL wT -lfe City State/Zip: ii)GyR.'oN-LF. A _01062.- Attach a copy of the xorkers' compensation policy declaration page(shoyving the policy number and expiration date). Failure to secure coverage as required under MGL c. 152,e25A is a criminal violation punishable by a tine up to S1.100,00 and or one-year Imprisonment.as'cell as civil penalties in the form of a STOP WORK ORDER and a fine of up to$250.00 a day against the'[Wilton A copy of this statement may be forwarded to the Office of Hy estigution.s of the DIA for insurance coverage 'erification. I do hereby certify nigh,the pains and prenaltiesof ethoxy that the information provided above is true and correct gPature S' : i ! 7177� . . Dn>�: J�/ ' 1//17 phone 413-584.8844 Official use on/y. Do not write in this area,to be completed by city-or town official CM or Town: Permit/License# Issuing Authority(circle one): I.Board of Health 2.Building Department 3.CityoTown Clerk 4. Electrical Inspector S.Plumbing Inspector 6.Other Contact Person: Phone Th 0 D..,,v,,N:.NCULI �l fl /01/ %%00 tITNMrT11/4.,IX L Try, OESCRroTON PARTNuttOE« NOTES .m DESCRFPnaNORCONOLCTOR TYPE SONO Nw.OE4 G1, CONDUIT CONOtn7 PV DC a AC MOOVLE - GAUGE CONDUCTORS TYPE SIZE pGACMVERTER VA CRO = - .. ..,. uSP.R[]or Pv w]er(R MrO uSGCado N A NA 1`Box 1 GEC cc EGG CI x ALA THATAPPLY NA NA W ARRAY t EATERIOR CABLE L+STE0 Er INV MFG MFG Oahe N A N A AC CO/A9 PANE, _ 1 ta.N.ffiu%nM4.$❑ wRWX20 _ ..- ( OEN tEETER .. _. OECD EAC St £Alt TAA'APP4.1 -- SAAE SAME AC DISCONNECT -n. NO DC GEC IF 690 35 SYSTEM SERVICE PANEL ._ t in\tiN3O axnwH.. aRw/#$ - u!I to6v6Vv!METER GEC EGO X %ALA MAT APPLv _ SAY!E SME nnn vn:� n•m+ SEE GD DE APPENDIX O EOR O Q o + • • •• - in'FOR!!AigN ON MODULE AND O • ARRAY c«ODNowG 1 - a MI /14 ERAER•ER$ I •a 1 0 � NCit nacorz _ l:J .....aa. • © _ $l I.- r.'�'•1 euILaNG 'S' S • a • •• +. A GROUNDING MICRO.INVERTE«G ELECTRODE A 9 - IN BRANCH ,• CACVi' Q a a! A • •• One-Line Standard Electoral Diagram © nmNONVERHERS' A Valley Solar LLC for Micro-Inverter PV Systems ow BRANCH POB 60627 Site Name CERCrnT fLi� Ha ce rna 01062 System AC a•' '� •A... j�;\ 4t35048844 System AC Size A- ...- .. Reardon •_•' o 417 2SCl/2' /V1K-/ /' / CryofNorfir, -n Building Dena: � SITE PLAN plan Review �/ 212 Main Stree i Northampton, MA 01060 Utility Customer: David E Koncki 142 Woods Rd, Lot 18 Florence, MA 01062 iIN "e Roof Mount: Iron Ridge XR100 "' s - Panels:33 LG 315W a +,. Layout 1: 2x10 Portrait Layout 2: 2x6 Portrait+1 top w, .R,. Micro-Inverters:33 Enphase ! �P 106+ r -t °s V_2. External wall of building: lei 00 5.AC Disconnect switch CI0Utilitymeter .110010 Le13. Internal wall of building: ..of Main electrical Revenue Grade Metering r �.,y TOTAL System Output: I •—es 10.395 kW DC 9.57 kW AC A L�7 enc y iaL'' 340 Riverside Drive, Northampton, MA 01062 www.valleysolarsoiar 413.584.8844 PLOT LINES Utility Customer: 1}1 David E Koncki °pF� 142 Woods Rd, Lot 18 ti�1� Florence, MA 01062 PV Solar Array Location 1510 WOODS RD 132.00 ft 127 rERLOOK DR 90. . 0ft 1 103 • 7 ft WOO IA it 13. 3 ft 104.43'S • 11 55. 6 ft scale = 1..1 .128 ct 132 376 411m 803.728.65m far l att31s T000gnacn c r a s asjsemao 340 Riverside Drive, Northampton, MA 01062 www.valleysolar.solar 413.584.8844 IRONRIDGE Roof Mount System a y4 p. rs ti IronRidge builds the strongest roof mounting system in solar. Every component has been tested to the limit and proven in extreme environments. Our rigorous approach has led to unique structural features, such as curved rails and reinforced flashings, and is also why our products are fully certified, code compliant and backed by a 20-year warranty. Strength Tested PE Certified All components evaluated for superior Pre-stamped engineering letters structural performance. available in most states. Class A Fire Rating Design Software Certified to maintain the fire resistance Online tool generates a complete bill of rating of the existing roof. materials in minutes. Integrated Grounding 20 Year Warranty UL 2703 system eliminates separate Twice the protection offered by module grounding components. competitors. • XR10 Rail XR100 Rail XR1000 Rail Internal Splices lb A low-profile mounting rail The ultimate residential A heavyweight mounting All rails use internal splices for regions with light snow. solar mounting rail. rail for commercial projects. for seamless connections. • 6'spanning capability • 8'spanning capability • 12'spanning capability • Self-tapping screws • Moderate load capability • Heavy load capability • Extreme load capability • Varying versions for rails • Clear anodized finish • Clear&black anod. finish • Clear anodized finish • Grounding Straps offered FlashFoot Slotted L-Feet Standoffs Tilt Legs ar?_ I___ i_ - Anchor, flash, and mount Drop-in design for rapid rail Raise flush or tilted Tilt assembly to desired with all-in-one attachments. attachment. systems to various heights. angle, up to 45 degrees. • Ships with all hardware • High-friction serrated face • Works with vent flashing • Attaches directly to rail • IBC& IRC compliant • Heavy-duty profile shape • Ships pre-assembled • Ships with all hardware • Certified with XR Rails • Clear& black anod. finish • Lengths from 3"to 9" • Fixed and adjustable End Clamps Grounding Mid Clamps T-Bolt Grounding Lugs Accessories AL .. - .r_ is I __A-- _AA-- ittbil- Slide in clamps and secure Attach and ground modules Ground system using the Provide a finished and modules at ends of rails. in the middle of the rail. rail's top slot. organized look for rails. • Mill finish& black anod. • Parallel bonding T-bolt • Easy top-slot mounting • Snap-in Wire Clips • Sizes from 1.22"to 2.3" • Reusable up to 10 times • Eliminates pre-drilling • Perfected End Caps • Optional Under Clamps • Mill& black stainless • Swivels in any direction • UV-protected polymer Design rough EABCee Certified Trainingc IIIIGo from rough layout to fully Earn free continuing education credits, engineered system. For free. while learning more about our systems. LG Innovation for a Better Life . - * i _ 1 4t 1 r - 1- r 1 1 4 r LG r`"Je{ -'N 2 14315NiG441 60 cell ° CE EiL? , ; Ti Enhanced Performance Warranty '; ; •t High Power Output pI, III fill I 11 III I IT Aesthetic Roof I,IIII Q Outstanding Durability 4.I1III IIilI I I i a; Better Performance on a Sunny Day Double-Sided Cell Structure . III I inh LG N0ON2 cram Mechanical Properties Electrical Properties(STC*) Ceuveedn_ _ MP= a¢am '•rmm! - '.1P C rro(Imve) o,nension. Open C r Volt (Vnq [NNE.. , e H rundn Elf aceN. Operstine r mpe r_.e(°C o ...:ad - O Maxin r een V! zRge RJ A:a,iwd .i Q MIr;m S use RstL {A) Connect rTLe -' • lune .v.'ou. -VII Cable, - - Glass Pram. Electricai Properties(NOCT*) Certifications and Warranty err:erav,,.. er Oyerr ge(voc) Sb.,' ntUsc W dole Fre Podr Ore Rateg I Frrra?EAC/.. Dimensions(min/in) Prodn..w„:--, O . r Temperature Characteristics -_ NOCE Pmp,r- a ..._. Characteristic Curves J — I • I LG pyo er —. o ...)VECTOR E Ca I it EERS VSE Project Number: U2338-0005-171 lune 12,2017 Valley Solar,LLC. ATTENTION:Patrick Rondeau P.O.Box 60627 Florence,MA 01062 REFERENCE: David Koncld Residence: 142 Woods Road,Florence,MA 01062 Solar Array Installation To Whom It May Concern: We have reviewed the documents provided by Valley Solar,LLC. relating to the installation of the solar array at the above- referenced site. Based upon our review, it is our conclusion that the installation of the solar array on this existing roof will not adversely affect this structure. It is our understanding that the structural components of the existing roof framing arc in good condition and free of damage. The design of the solar panel racking (mounts, rails, etc.) is by the manufacturer or contractor_Please note a representative of Vector Structural Engineering has not physically observed the roof framing. Design Parameters Code: Massachusetts State Residential Code(780 CMR Chapter 51,8th Edition(2009 IBC)) Occupancy Category: tI Design wind speed:90 mph (3-sec gust)per ASCE 7-05 Wind exposure category: B Ground snow load: 40 psf Existing Roof Structure Roof structure:2x4 manufactured trusses t 24"O.C. Roofing material:asphalt shingles Roof pitch: 5:12 Connection to Roof Mounting connection:(1)5:16" lag screw wl min.2.5" embedment at max.4R"O.C. Conclusions Our conclusion regarding the adequacy of the existing roof is based on the fact that the additional weight of the solar array is 3 psf or less. In the area of the solar array, other live loads will not be present or will be greatly reduced. Regarding snow loads,because the panels are slippery and unobstructed,effective snow loads will be reduced in the area of the solar array. The gravity loads in the area of the solar array are decreased; thus, the stresses of the structural elements are decreased. Therefore, the requirements of Section 3403.3 of the Massachusetts State Building Code(780 CMR Chapter 16, 8th Edition (2009 IBC))are met and the structure is permitted to remain unaltered. 65r.W.GdIena Park EEL,Ste. 1011 C'oper, L 134020/7(801)99E1775/F(801)990-1776/www.vectorse.com VSE Project Number: U2338-0005-171 %V E C T O R David Koncki Residence 6/12/2017 E n G I n EER The solar array will be flush-mounted (no more than 6" above the roof surface) and parallel to the roof surface. Thus, we conclude that any additional wind loading on the structure related to the addition of the proposed solar array is negligible. The attached calculations verify the capacity of the connections of the solar array to the existing roof against wind(uplift), the governing load case, The connections to the existing roof shall be spaced at 48" maximum. Regarding seismic loads,we conclude that any additional forces will be small. With an assumed roof dead load of 12 psf, solar array dead load of 3 psf, and affected roof area of 33% (maximum), the additional dead load (and consequential seismic load) will be 9.7% This calculation conservatively neglects wall weight. Because lateral loads are increasing by less than 10%,the installation of the solar panels meets the requirements in Section 3403.4 of the Massachusetts State Building Code(780 CMR Chapter 16.8th Edition(2009 IBCA and the structure is permitted to remain unaltered. Limitations Installation of the solar panels must be performed in accordance with manufacturer recommendations. All work performed must be in accordance with accepted industry-wide methods and applicable safety standards. The contractor shall notify Vector Structural Engineering, LLC should any damage, deterioration or discrepancies between the as-built condition of the structure and the condition described in this letter be found. Particular attention must be paid to the maximum allowable spacing of connections and the location of solar panels relative to roof edges. Connections to existing roof framing must be staggered so as not to overload any existing structural member, except at array ends. The use of solar panel support span tables provided by others is allowed only where the building type. site conditions, site-specific design parameters, and solar panel configuration match the description of the span tables. Electrical engineering is the responsibility of others. Waterproofing around the roof penetrations is the responsibility of others. Vector Structural Engineering assumes no responsibility for improper installation of the solar array. VECTOR STRUCTURAL ENGINEERING, LLC ROGER T. \ AL1yO 1 SIYf4' t No.:ayj(p 06/12'2017 Roger Alworth,P.E. MA License:47740-Expires: 06/30/2018 Principal Enclosures RTA/ads 651 W.Galena Park Blvd,Ste. 101/Draper, Ur 81020/ I (807)990-1775/F I80i1 990 1776/www.vectorse.com 71 �/ ECTOR JOB Np.: WIND PRESSURE SUBJECT: WIND PRESSURE En roi n E E R E PROJECT: David Koncki Residence Components and Cladding Wind Calculations Label: Solar Panel Array Note: Calculations per ASCE 7-05 SITE-SPECIFIC WIND PARAMETERS: Basic Wind Speed [mph]: 90 Notes: Exposure Category: B Occupancy Category: II Importance Factor, I: 1,0 ADDITIONAL INPUT&CALCULATIONS: Height of Roof, h [ft]: 25 (Approximate) Comp/Cladding Location: Gable/Hip Roofs 7 <B<2T Hip? No Enclosure Classification: Enclosed Buildings Zone 1 GCp: 0.9 Figure 6-11C (enter largest abs. value) Zone 2 GCp: 1,7 (enter largest abs. value) Zone 3 GCp: 2.6 (enter largest abs. value) a: 7 Table 6-2 zp [ft]: 1200 Table 6-2 Kd: 0.70 Table 6-3 Krt: 1 Equation 6-3 Kd: 0.85 Table 6-4 Velocity Pressure, qd [psf]: 12.3 Equation 6-15 GCp,: 0 Figure 6-5 (largest abs. value) OUTPUT: p=qn (c�'v)—(CCnr� Equation 6-4 Zone 1 Pressure, p[psf]: 11.1 psf(1.0 W, Interior Zones*) Zone 2 Pressure, p [psf]: 21.0 psf(1.0 W, End Zones*) Zone 3 Pressure, p [psf]: 32.1 psf(1.0 W, Corner Zones' within a) (a= 3 ft) 5-171 ,�/ ECTOR JOB NT: CONNECTION SUBJECT: CONNECTION E n G I n E E R _� PROJECT: David Koncki Residence Lag Screw Connection Capacity: Demand: Lag Screw Size [in]: 5/16 Cd: 1.6 NOS Table 2.3.2 Pressure Max Max. Trib. Max. Uplift (1.0 Wind) Spacing Area Force Embedment [in]: 2.5 (psf) (ft) (ft') (lbs) Grade: OF(G =0.5) Zone Capacity [lbs/in]: 266 NDS Table 12.2A 1 11.1 4.0 11.0 122 Number of Screws: 1 2 21.0 4.0 11.0 231 Prying Coefficient: 1.4 3 32.1 3.0 8.3 265 Total Capacity [Ibs): 760 Demand< Capacity: CONNECTION OKAY %,,,,, EnG (1EERS ECT® R JOB NO.: U2338-0005-171 SUBJECT: GRAVITY LOADS PROJECT: David Koncki Residence CALCULATE ESTIMATED GRAVITY LOADS Increase due to Original ROOF DEAD LOAD (D) pitch loading Roof Pitch/12 I 5.0 Asphalt Shingles 2.2 1.08 2.0 psf 1/2" Plywood 1.1 1.08 1.0 psf Framing 3.0 psf Insulation 0.5 psf 1/2" Gypsum Clg. 2.0 psf M, E & Misc 1.5 psf DL 10 psf PV Array DL 3 psf ROOF LIVE LOAD (Lr) Existing Design Roof Live Load [psf] 20 ASCE 7-05,Table 4-1 Roof Live Load With PV Array [psf] 0 w/ Solar Panel SNOW LOAD (S): Existing Array Roof Slope [x:12]: 5.0 5.0 Roof Slope [O]: 23 23 Snow Ground Load, p9 [psf]: 40 40 ASCE 7-05, Section 7.2 Terrain Category: B B ASCE 7-05, Table 7-2 Exposure of Roof: Fully Exposed Fully Exposed ASCE 7-05, Table 7-2 Exposure Factor, Ce: 0.9 0.9 ASCE 7-05,Table 7-2 Thermal Factor, Ci: 1.2 1.2 ASCE 7-05, Table 7-3 Risk Category: II II ASCE 7-05, Table 1-1 Importance Factor, I,: 1.0 1.0 ASCE 7-05, Table 7-4 Flat Roof Snow Load, pf[psfl: 30 30 ASCE 7-05, Equation 7-1 Minimum Roof Snow Load, pm [psf]: 0 0 ASCE 7-05, Section 7.3.4 Unobstructed Slippery Surface? No Yes ASCE 7-05, Section 7.4 Slope Factor Figure: Figure 7-2c Figure 7-2c ASCE 7-05, Section 7.4 Roof Slope Factor, Ce: 1.00 0.86 ASCE 7-05, Figure 7-2 Sloped Roof Snow Load, p, [psf]: 30 26 ASCE 7-05, Equation 7-2 Design Snow Load, S [psf]: 30 26 * ECTOR JOB NO.: U2338-0005-171 SUBJECT: LOAD COMPARISON I S I 11 EER S PROJECT: David Koncki Residence Summary of Loads Existing With PV Array D[psi] 10 13 Lr[last] 20 0 S [pfsfj 30 26 Maximum Gravity Loads: Existing With PV Array D+ L,[psf) 30 13 ASCE 7-05,Section 2.4.1 D+S [psf) 40 39 ASCE 7-05,Section 2.4.1 Maximum Gravity Load [psf]: 40 39 Ratio Proposed Loading to Current Loading: 97% OK The gravity loads in the area of the solar array are decreased;thus,the stresses of the structural elements are decreased.Therefore,the requirements of Section 3403.3 of the Massachusetts State Building Code(780 CMR Chapter 16,8th Edition(2009 IBC)) are met and the structure is permitted to remain unaltered.