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31B-311 (5) Existing Chimney to be Removed - cut header sister rafter w/ (2) 2x6 from Ext. Wall to Perlin Existing Purlin to be Reinforced per 5k -52 in this span only > .i 44 Existing Ridge Line N • • - Existing Ext. Wall - Typical Existing Rafter - Typical Existing Post - Typical ■ ■"*" Existing Purlin - Typical NORTH "Front" Roof Framing In Structural Reinforcements Dwg•# 5k -5I sc°Pe ° = RYAN S. HELLWIG, PE for .lames House PV D STRUCTURAL ENGINEER 42 Gothic Street P A ril 2q, 2OOq NNOR A 01060 Northampton, Ml4 Bored Renewable Energy Development Fox: 413 584 HLWFax (45935 • 5" TrussLOK screws ® 16" o/c - Typical ' Reinforce Existing Purlln 61\ , w/ ice" x IV LYL Ea. Side ', 1j104 , 11\ Existing Puriin Section @ Existing Puriin Reinforce Existing Puriin w/ l4" x 117t" LYL Ea. Side .• ` L� 4 b" 0 Solt w/ Washers Typical of 3 Ea. End •` `mot ,T ° r Existinngg Post ®E . End of Purlln Section @ Existing Post Structural Reinforcements D""9 5k -52 Scale Ili` = ro' RYAN S. HELLWIG, PE for James House PV Date STRUCTURAL ENGINEER 42 Gothic Street AprII 2q, 20001 NOR THAMPT O N H A 01 Northampton, MA red Renercble gy Developrrient Fax: 413 584 HLWFax 4593 Structural Analysis James House PV April 29, 2009 the PV panels, which also warm up with direct exposure to the sun, will generally hold less snow than roofing of standard asphalt shingles. Because the modules will be supported on a rail system, their weight plus the weight of the snow on them will be delivered to the roof at discrete points. The effect of these point loads on the existing roof framing members must ]Ze evaluated. In the case of the front roof, the rafters are adequate to support the PV point loads, provided that the rail spans are 24 ", so that every rafter is equally loaded. If a 48" rail span is desired, then the rails should be fastened to new blocking which would be installed between the existing rafters, or else stagger the support points between alternate rafters, so that the rafters are equally loaded. The purlin of the front roof is not able to support the proposed loads. In fact, it is not adequate for the current snow loads, without the PV. Typically this roof would be grandfathered, but that status would be lost with the PV installation. Therefore, the purlin must be reinforced. Attached please find sketches showing this reinforcement. In the case of the back roof, the proposed PV system requires a careful review of the existing versus proposed loads. The 7th Edition of the Massachusetts State Building Code (MSBC) lists a ground snow load p is 55 psf. The exposure factor C, is 1.0, the temperature factor C, is 1.0, and the importance factor I is also 1.0. Therefore, per ASCE Equation 7 -1 (American Society of Civil Engineers) the flat roof snow load p is 38.5 psf. Depending on the pitch and the roof surface smoothness, the flat roof snow load p may be further reduced to the sloped roof snow load p For a temperature factor C, of 1.0, and an unobstructed slippery surface, the roof slope factor C in ASCE Figure 7 -2 is 0.7. Thus, per ASCE Equation 7 -2, the sloped roof snow load IN is 27 psf. Since this is an existing building, it does not have to satisfy the load requirements of the Code for new construction. Chapter 34 of MSBC contains the provisions for existing buildings. Per §3408.2.1, the snow load may be reduced to 85% of that required by the Code for new construction. This final reduction brings the snow load to 23 psf, which is 5 psf less than the design load shown on the original S -3 drawing, which was 28 psf. This Code - approved reduction of 5 psf in the snow loads, due to the unobstructed slippery surface of the PV, counteracts the additional 5 psf from the self - weight of the PV. In order to maintain an even distribution of the loads to all trusses, the rail spans on this back roof should also be kept to 24 ", unless the supports are staggered on every truss. It does not seem practical to install blocking, since there is no access to the truss spade. I hope that you find this satisfactory. Please let me know if you have any questions. Respectfully Submitted, Ryan S. Hellwig Page 2 of 2 • RYAN S. HELLWIG PE • STRUCTURAL ENGINEER • April 29, 2009 Samina Ali, Solar Consultant Boreal Renewable Energy Development 43 Margaret Street Arlington, MA 02474 sali@boreal-renewable.com Re: James House Photovoltaic Panels 42 Gothic Street Northampton, MA The following is a report of my review of the above - mentioned project. On April 21, 2009, I personally inspected the accessible areas of the existing roof structure of this building. I have also reviewed design drawings, dated Dec. 1, 1986, for the construction of the addition which was built in 1987 at the rear of the building. The intent of this project is to install photovoltaic (PV) panels on the two roofs of this building. The front roof is part of the original 19 century James House building. As noted above, the back roof was built in 1987. Because of solar shading from nearby trees, only part of the front roof will be utilized for PV. Most of the south- facing side of the rear roof will have PV. The 19 century house was constructed with a timber -framed structural system. The roof is 28 feet wide, and has a slope of about 23 degrees. It has asphalt shingles, with plywood sheathing placed over the original sheathing boards. The rafters are full- dimension softwood 3" x 5'/2" spaced at 24" on center. At the peal4, the rafters are pegged to a non - structural ridge beam. The bottoms of the rafters bear on the exterior walls. In between, there is a 7" x 7" timber purlin which supports the midpoint of the rafters. The spans of this purlin vary from 7 feet over the front porch to 19 feet at the rear of the roof. This latter span is so great that there is a noticeable sag in the roof, even without any snow load. . e ro • of the addition was constructed with a metal -plate connected dimension lumber roof truss sy em. The structural enginee design drawings, dated Dec. 1, 1986, were made by Alterivan & MacNeish, Architects and Engineers, West Springfield, MA. The design notes on S -3 call for the trusses to have a sloped roof live load of 28 psf. The trusses were drawn as a Howe type, with a 32 ft. overall span, 5'/2:12 pitch, and 24" on center spacing. The truss members were specified as Southern Pine, with size and grade varying depending on the location within the truss. The notes also call for the truss manufacturer to submit design calculations to be reviewed by the design engineer. These calculations are not available, so it is not known what level of load capacity was actually provided. No access is currently available to view these trusses. Even if they could be seen, determining the actual capacity would be very difficult. The proposed array weighs approximately 5 psf, including rails and hardware. This additional weight will increase the dead load stresses in the existing roofs. However, the smooth surface of • 28 ALDRICH STREET • NORTHAMPTON, MA 01060 • • Voice = 413 - 584 -HLWG (4594) • Fax = 413 - 584 - HLWFax (4593) • Email = rshpe @crocker.com • Version 1.7 Commercial Building Permit May 15, 2000 SECTION 10- STRUCTURAL PEER REVIEW (780 CMR 110.11) Independent Structural Engineering Structural Peer Review Required Yes O No 0 ' SECTION 11 - OWNER AUTHORIZATION - TO BE COMPLETED WHEN OWNERS AGENT OR CONTRACTOR APPLIES FOR BUILDING PERMIT I, _, as Owner of the subject property hereby authorize to act on my behalf, in all matters relative to work authorized by this building permit application. Signature of Owner Date I, _. , 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. ti Print Name Signature of Owner /Agent Date SECTION 12 - CONSTRUCTION SERVICES 10.1 Licensed Construction Supervisor: Not Applicable El Name of License Holder : Po 1 ..._. __. .._.. 4l �...m.. . _ License Number k . .. c r iliPki nt V 1,01 0 A. i Expiration Date Si. a u e Telephone SE •TION -WORK - ' COMPENSATION INSURANCE AFFIDAVIT (M.G.L. c. 152, § 25C(6)) Workers Compensation Insurance affidavit must be completed and submitted with this application. Failure to provide this affidavit will result in the denial of the issuance of the building permit. Signed Affidavit Attached Yes 0 No 0 The Commonwealth of Massachusetts Department of Industrial Accidents a Office of Investigations r 600 Washington Street Boston, MA 02111 www.inass.gov /dia Workers' Compensation Insurance Affidavit: Builders/ Contractors /Electricians/Plumbers Applicant Information Please Print Legibly Name ( Business /Organization/Individual): Address: City /State /Zip: Phone #: Are you an employer? Check the appropriate box: Type of project (required): . I am a general contractor and I I. ❑ I am a employer with 4 6. ❑ New construction employees (full and/or part- time).* have hired the sub - contractors 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' 9. ❑Building addition [No workers' comp. insurance comp. insurance.$ required.] 5. ❑ We are a corporation and its 10.0 Electrical repairs or additions 3. ❑ I am a homeowner doing all work officers have exercised their 11.0 Plumbing repairs or additions myself m workers' comp. right of exemption per MGL y [No workers com p 152, §1(4), and we have no 12.E Roof repairs C. 152 insurance required.] t employees. [No workers' 13.[] Other comp. insurance required.] Any applicant that checks box 7'41 must also fill out the section below showing their workers' compensation policy information. r Homeowners who submit this affidavit indicating they are doing all work and then hire outside contractors must submit a new affidavit indicating such. Contractors 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 am an employer that is providing workers' compensation insurance for my employees. Below is the policy and job site information. Insurance Company Name: Policy # or Self -ins. Lic. #: Expiration Date: Job Site Address: City /State /Zip: 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 the pains and penalties of perjury that the information provided above is true and correct. Signature: Date: Phone #: Official use only. Do not write in this area, to be completed by city or town officiaL 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 #: Versionl.7 Commercial Building Permit May 15, 2000 8. NORTHAMPTON ZONING Existing Proposed Required by Zoning This column to be filled in by Building Department Lot Size ".,._.. _...._, ". _ Frontage . -. Setbacks Front _.. Side L:. -__ ..,.,.." R. ..__._._ L ._ .._,... R.......__..; .-- Rear .: Building Height __... Bldg. Square Footage Open Space Footage __._ " (Lot area minus bldg & paved parking) # of Parking Spaces Fill: (volume & Location) 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 0 DONT KNOW 0 YES IF YES: enter Book Page'' and /or Document #' B. Does the site contain a brook, body of water or wetlands? NO 0 DONT KNOW 0 YES 0 IF YES, has a permit been or need to be obtained from the Conservation Commission? Needs to be obtained 0 Obtained , Date Issued: C. Do any signs exist on the property? YES NO Q IF YES, describe size, type and location: D. Are there any proposed changes to or additions of signs intended for the property ? YES 0 NO 0 IF YES, describe size, type and location: E. WII 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 0 NO O IF YES, then a Northampton Storm Water Management Permit from the DPW is required. - Versionl.7 Commercial Building, Permit May 15, 2000 SECTION 9- PROFESSIONAL DESIGN AND CONSTRUCTION SERVICES - FOR BUILDINGS AND STRUCTURES SUBJECT TO CONSTRUCTION CONTROL PURSUANT TO 780 CMR 116 (CONTAINING MORE THAN 35,000 C.F. OF ENCLOSED SPACE) 9.1 Registered Architect: Not Applicable ❑ Name (Registrant): .,.. _. _ .. , . Registration Number Address Expiration Date Signature Telephone 9.2 Registered Professional Engineer(s): Name Ar %q_c,�1.14.._ .. .__ . ..._ Area of R esponsibility Address Registration Number Signature Telephone Expiration Date Name Area of Responsibility Address Registration Number Signature Telephone Expiration Date Name Area of Responsibility Address Registration Number Signature Telephone Expiration Date Name Area of Responsibility Address Registration Number Signature Telephone Expiration Date 9.3 General Contractor (1.t q'!L O,U1C' J .._..._.., __..__. Not Applicable ❑ Compa y Name Res•onsible In Charge of C. '.truction Add i ,1 .1 \ .. �... Sig _ p- Telephone ' % Version 1.7 Commercial Building Permit May 15. 2000 SECTION 4- CONSTRUCTION SERVICES FOR PROJECTS LESS THAN 35,000 CUBIC FEET OF ENCLOSED SPACE Interior Alterations D Existing Wall Signs ❑ Demolition ❑ Repairs ❑ Additions Accessory Building ❑ Exterior Alteration ❑ Existing Ground Sign ❑ New Signs ❑ Roofing Change of Use 0 Other ❑ P ' IAy i �.-- .9 )'.y (� i -44.1 Brief Description Enter a brief description here. *,��� `�� � � 1►��sfiA Of Proposed Work: , er A-1 t.,.{ 0 ?•‘")Ik t cuevkA S S'C SECTION 5 - USE GROUP AND CONSTRUCTION TYPE USE GROUP (Check as applicable) CONSTRUCTION TYPE A Assembly A -1 ❑ A -2 ❑ A -3 ❑ 1A I ❑ A -4 ❑ A -5 ❑ 1B ❑ B Business ❑ 2A ❑ E Educational ❑ 2B - I. ❑ F Factory ❑ F -1 ❑ F -2 ❑ 2C I ❑ H High Hazard ❑ 3A i ❑ I Institutional ❑ 1 -1 ❑ 1 -2 ❑ 1 -3 ❑ 3B ❑ M Mercantile ❑ 4 0 R Residential ❑ R -1 ❑ R -2 ❑ R -3 ❑ 5A ❑ S Storage ❑ S -1 ❑ S -2 ❑ 5B ❑ U Utility ❑ Specify: M Mixed Use ❑ Specify: S Special Use ❑ Specify: COMPLETE THIS SECTION IF EXISTING BUILDING UNDERGOING RENOVATIONS, ADDITIONS AND /OR CHANGE IN USE Existing Use Group: Existing Hazard Index 780 CMR 34): Proposed Hazard Index 780 CMR 34).., _ .__,_,_, _._,_ .._,.__.,. SECTION 6 BUILDING HEIGHT AND AREA BUILDING AREA EXISTING PROPOSED NEW CONSTRUCTION OFFICE USE ONLY Floor Area per Floor (sf) 1s _ 1 s r 2nd. _ . ,_..... _ ,_ __ .._ __,.,_.._ 2 nd 3 d _. .. _ ,. _ 3� . _ . 4m ... __ _ __ _._.__ .... _ _ 4 II � p Total Area (s Total Proposed New Construction (sf) „ Total Height (ft) Total Height ft 7. Water Supply (M.G.L. c. 40, § 54) 7.1 Flood Zone Information: 7.3 Sewage Disposal System: Public ❑ Private ❑ Zone Outside Flood Zone Municipal El On site disposal system Versionl.7 Commercial Building Permit May 15. 2000 Department use only • City of Northampton Status of Permit: Building Department Curb Cut/Driveway Permit - 212 Main Street Sewer /Septic Availability Vj ' Room 100 Water/Well Availability Nbrthanipton, MA 01060 Two Sets of Structural Plans phone Fax 413 - 587 -1272 Plot/Site Plans Other Specify APPLICATION TO CONSTRUCT, REPAIR, RENOVATE, CHANGE THE USE OR OCCUPANCY OF, OR DEMOLISH ANY BUILDING OTHER THAN A ONE OR TWO FAMILY DWELLING SECTION 1 - SITE INFORMATION 1.1 Property Address: This section to be completed by office 14 .0V-7 k W Map Lot Unit Zone Overlay District _ ._..- -- Elm St. District CB District SECTION 2 - PROPERTY OWNERSHIP /AUTHORIZED AGENT 2.1 Owner of Record: Name Pnn` � Current Mailing A ._ � _ . .__ ( g ddress: Signature � ' ► Telephone 2.2 Authori W ent: Name (Print) Current Mailing Address: 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 15 2. Electrical (b) Estimated Total Cost of Construction from (6) __ .... 3. Plumbing Building Permit Fee 4. Mechanical (HVAC) . __._w_.. _ ._ .. ..�_ 5. Fire Protection 6. Total = (1 + 2 + 3 + 4 + 5) _ Check Number This Section For Official Use Only Building Permit Number Date Issued Signature: Building Commissioner /Inspector of Buildings Date • File # BP- 2010 -0351 APPLICANT /CONTACT PERSON CITY OF NORTHAMPTON CENTRAL SERVICES ADDRESS /PHONE Memorial Hall NORTHAMPTON (413) 587 -1260 () PROPERTY LOCATION 42 GOTHIC ST - JAMES HOUSE MAP 31B PARCEL 311 001 ZONE CB(100)/ THIS SECTION FOR OFFICIAL USE ONLY: PERMIT APPLICATION CHECKLIST ENCLOSED REQUIRED DATE ZONING FORM FILLED OUT Fee Paid Building Permit Filled out � / _ O Fee Paid 1 (2;' Typeof Construction: INSTALL ROOF FRAMING /BRACING FOR PHOTOVOLTAIC SYS New Construction Non Structural interior renovations Addition to Existing Accessory Structure Building Plans Included: Owner/ Statement or License 054510 3 sets of Plans / Plot Plan THE F OWING ACTION HAS BEEN TAKEN ON THIS APPLICATION BASED ON IN ATION PRESENTED: 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 Demolition Delay �' Signature of Building Official Date Note: Issuance of a 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 MGL 40A. Contact Office of Planning & Development for more information. e}THIC ST - JAMES HOUSE BP GIS #: COMMONWEALTH OF MASSACHUSETTS Map:Block: 31B - 311 CITY OF NORTHAMPTON Lot: -001 PERSONS CONTRACTING WITH UNREGISTERED CONTRACTORS Permit: Building DO NOT HAVE ACCESS TO THE GUARANTY FUND (MGL c.142A) Category: BUILDING PERMIT Permit # BP- 2010 -0351 Project # JS- 2010- 000469 Est. Cost: $750.00 Fee: $0.00 PERMISSION IS HEREBY GRANTED TO: Const. Class: Contractor: License: Use Group: CITY OF NORTHAMPTON CENTRAL SERVICES 054510 Lot Size(sq. ft.): 16814.16 Owner: NORTHAMPTON CITY OF CITY PROPERTY Zoning: CB(100)/ Applicant: CITY OF NORTHAMPTON CENTRAL SERVICES AT: 42 GOTHIC ST - JAMES HOUSE Applicant Address: Phone: Insurance: Memorial Hall (413) 587 -1260 0 NORTHAM PTONMA01060 ISSUED ON :10/2/2009 0:00:00 TO PERFORM THE FOLLOWING WORK :INSTALL ROOF FRAMING /BRACING FOR PHOTOVOLTAIC SYS 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 10/2/2009 0:00:00 $0.00 212 Main Street, Phone (413) 587 -1240, Fax: (413) 587 -1272 Building Commissioner - Anthony Patillo