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HomeMy WebLinkAboutCertificate of Appropriatenessfor Comm ittee use only By a vote o Conditions of Approval This Certificate is hereby APPROVED Aye Nay Abstain Date New Build Addition Alteration Residential Type of Building House Garage Barn Shed Other Project Roof Windo ws/Doors Siding/Painting Solar Other Landscape Feature Fence Wall Flag Pole Pool Other New Sign Replace Sign Repaint Sign Town of Barnstable Old King's Highway Historic District Committee 367 Main Street, Hyannis, Massachusetts 02601 Telephone (508) 862-4787, Email grayce.rogers@town.barnstable.ma.us APPLICATION FOR CERTIFICATE OF APPROPRIATENESS Application is hereby made, with six (6) complete, colored sets, for the issuance of a Certificate of Appropriateness under Section 6 of Chapter 470, Acts and Resolves of Massachusetts, 1973, for proposed work as described below and on plans, drawings, or photographs accompanying this application for: Date Date Built: Map & Parcel Property Ow ner Phone Street address Email Village Mailing address Signature Agent/Contractor Phone Agent Address Email Agent Signature If approved, the Certificate of Appropriateness expires one year from the stamped approval date or upon the expiration of a Building Permit, w hichever date shall be later. A one year ex tension may be requested, in w riting, to the Old King’s Highw ay Administrative Assistant at 367 M ain Street, Hyannis, M A 02601. This request must be received prior to the date of expiration. There is a 10 day appeal period plus a four day waiting period for all applications after w hich time your approval paperw ork w ill be availabl e for pickup and building per mit sign-off. All applications are subject to meeting any applicable building code requirements. Check all categories that apply Building Construction Commercial Sign Other _ Description of Proposed Work DENIED 6/9/2022 1955 Angela Tangney 508-744-7589 133 Main ST mapermits@visionsolar.com 133 Main St W. Barnstable, MA 02668 Vision Solar / Paata Macharashvili 856-886-8724 501 Route 168 Blackwood, NJ 08012 mapermits@visionsolar.com X X X Installation of 12 roof mount solar panels-4.32KWDC Photovoltaic System CERTIFICATE OF APPROPRIATENESS – SPEC SHEET CHIMNEY Material Color ROOF Make & style Color Roof Pitch (s) – (7/12 minimum) (specify on plans for new building & major additions) GUTTER T ype/Material Color WINDOWS, DOORS, TRIM, SHUTTERS, SKYLIGHTS Window/Door Trim material Wood Other specify Size of cornerboards Size of casings (1X4 min) Color Rakes 1st member 2nd Member Depth of overhang Windows: Make/Model Material Color Window Grills Divided Light Exterior Glued Grills Grills Between Glass Removable Interior Grills No Grills Grill Pattern Doors: Style & Make Material Color Garage doors: Style Size of opening Material Color Shutters: Type & Style Material Color Skylights: Type Make & Model Material Size Color SIDING Type Clapboard Shingle Other Material Red Cedar White Cedar Other Paint Color FOUNDATION T ype (max 12’ exposed) DECK Material Color SIGNS Size Materials Color FENCE T ype (split rail, chain link) Color Material Length RETAING WALL Description LIGHTING Type and location (free standing affixed to structure, illuminated) Brick Red Brick 12" Asphalt Shingles Black Aluminum White Vinyl WhiteN/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A CHECKLIST – CERTIFICATE OF APPROPRIATENESS Please complete the Checklist that is applicable to your project. Submit electronic complete colored set, unless otherwise noted FEES Filing Fee according to fee schedule, please make checks payable to the Town of Barnstable Legal Ad fee, will be billed, made payable to the Town of Barnstable First Class Postage Sta mps for abutter notification. Please contact Barnstable Old King’s Highway Office for correct count ALTERATIONS (new paint color, change of siding material, roofing, windows, doors, shutters, etc) Application for Certificate of Appropriateness Spec Sheet, brochures and color samples Plans of building elevatio ns/photographs, ONLY if there is a change to the location and size of the window (s) or Door (s). MINOR ADDITIONS (decks, enclosing a porch, sheds (over 120 sqft) Application for Certificate of Appropriateness, Spec Sheet, brochures and color samples Site Plan, ONLY if there are changes to the footprint (see site plan criteria below) A site plan drawn on a mortgage survey plan or GIS map may be used for minor additions, UNLESS the porch, deck, pool, or Shed etc. is close to lot lines, zoning setback lines, or other buildings, in which case a certified site plan must be submitted Photographs of all building elevation affected by any proposed alterations Plans 2 full scale plans, plus 4 copies of the plan at reduced scale to fit 8.5x11 or 11x17 paper Company brochure of manufacturers shed or to-scale sketch or affected structure or building elevations ASSESSORY STRUCTURES, NEW/ALTERED (fences, new stonewalls, changes to retaining walls, pools etc) Application for Certificate of Appropriateness Spec Sheet, brochures &/or diagram Site Plan (see site plan criteria below) Photographs of any existing structure that will be affected by the change SIGNS (complete sign supplement) Rendering of the proposed sign, showing graphics, dimensions, design and height of post, color, and materials Site Plan on GIS map or mortgage survey, or photograp hs, or to-scale sketch of building elevation showing location of Proposed sign; and any tree to be removed near a freestanding sign (see below for site plan criteria) SOLAR PANELS (complete solar panel supplement) Drawing of locations of panels on house showing roof and panel dimensions Site Plan showing location of building on property (see site plan criteria below) SITE PLAN CRITERIA Name of applicant, street location, map and parcel Name of architect, engineer, or surveyor; original stamp & signature; date of plan & revision dates North arro w, written and drawn to scale Changes to existing grades shown with one -foot contours Proposed & existing footprint of building and/or structures, and distance to lot lines Proposed driveway location Proposed limits of clearing for building (s), assessor structure (s), driveway and septic system Retaining walls or accessory structures (e.g. pool, tennis court, cabana, barn, garage, etc) NEW BUILDINGS, ADDITION, OR COMMERICAL BUILDING CHECKLIST – CERTIFICATE OF APPROPRIATENESS Submit electronic complete colored set, unless otherwise noted Application for Certificate of Appropriateness Spec Sheet, brochures or diagram Site Plan Name of applicant, street location, map and parcel Name of architect, engineer, or surveyor; original stamp & signature; date of plan & revision dates North arrow, written and drawn to scale Changes to existing grades shown with one-foot contours Proposed & existing footprint of building and/or structures, and distance to lot lines Proposed driveway location Proposed limits of clearing for building (s), assessor structure (s), driveway and septic system Retaining walls or accessory structures (e.g. pool, tennis court, cabana, barn, garage, etc) Building Elevations Plans at scale of ¼’ = 1 foot; a written drawn scale Plans at a reduced scale to fit 8.5”x11 or 11x17 paper Name of applicant, street location, map and parcel Name of Building Designer, or architect; original signature of plan preparer and stamp; plan date, and all revision dates. *All new house or commercial building plans must have an original signature and stamp, if any, by a registered Architect, member of AIBD, or a licensed Massachusetts Home Improvement Contractor, unless this requirement is waived by the Old King’s Highway Historic District Committee. A written and bar drawn scale Elevations of all (affected) sides of the building, with dimensions including height from the natural grade adjacent to the Building to the top of the ridge; location and elevation of finished grade, roof pitch (s) dormer setbacks; trim style, windo w And door styles. Changes to existing building must be clouded on drawings. Window schedule on plans Landscape Plan (drawn on a certified perimeter plan containing the following) Name of applicant, street address, assessor’s map and parcel number Name, address, and telephone number of the plan preparer, pl an date, & date of revisions The location of existing and proposed buildings and structures, and lot lines Natural features of site (i.e. rock outcroppings, streams, wetlands, etc) Existing buffer areas to remain Location and species of trees and plants Driveway, parking areas, walkways, and patios, indicating materials to be used Existing stone walls, and proposed walls including retaining walls for slope retention or septic systems For removal of stone walls, you must file a demolition application All proposed exterior lighting and signs Sketch or Photos of adjacent properties A sketch (s) to scale or photographs of nearby adjacent buildings, where present, along both sides of the street frontage, Showing the proposed new house or commercial building in scale and in relationship to the existing buildings. Please discuss with staff if you do not think this is relevant to your application. Photographs of all sides of existing buildings to remain or being added to Existing building, foot print Building 1 (sq. ft.) Building 2 (sq. ft.) Exiting building, gross floor area, including area of finished basement Building 1 (sq. ft.) Building 2 (sq. ft.) New Building or addition, foot print Building 1 (sq. ft.) Building 2 (sq. ft.) New Building or addition, gross floor area, including area of finished basement Building 1 (sq. ft.) Building 2 (sq. ft.) Plan preparer, signature and date SOLAR PANEL SUPPLEMENT STRUCTURE ONE STRUCTURE TYPE Ho me Garage Barn ELEVATION PLACEM ENT North ROOF M EASUREM ENTS South East West Length SOLAR PANEL M EASUREM ENTS Height Pitch Length SOLAR PANEL TYPE & FINISH Depth Width Color Finish (matte or glossy) STRUCTURE TWO STRUCTURE TYPE Ho me Garage Barn ELEVATION PLACEM ENT North ROOF M EASUREM ENTS South East West Length SOLAR PANEL M EASUREM ENTS Height Pitch Length SOLAR PANEL TYPE & FINISH Depth Width T ype Roof Mounted Ground Mounted Canopy/Carport System Color Finish (matte or glossy) Solar Co mpany Phone Solar representative Print Name Signature Date X 12"49.75 30. 69.09 40.87 19.61 /Black Glossy X Vision Solar, LLC Kristyn Wakeley 6/9/22 SIGN SUPPLEMENT PROJECT TYPE New Minor Change to Existing Sign Replace Existing Color Replace Existing Sign with New MOUNTING TYPE Post Mount Post Mount Installation Type Surface Installation Direct Burial Installation Wall/Surface Mount Mounting type Elevation affixed to ASTHETICS Size Material Lettering (style) Color Post/Mount Material Color Height to Crossbar Single Faced Double Faced LIGHTING Will the sign be lit Yes No Type of Lighting Placement of Lighting ADDITIONAL INFORM ATION Patent Pending. Copyright © 2020 Richard Pantel. All Rights Reserved. Paper or PDF copies of this report may be distributed only to employees of the company listed below under "Prepared for", or to Authorities Having Jursidiction (AHJ's) for their review purposes. This document contains Intellectual Property (IP) created by the Author, and as such, no parts of this calculation report or related data input form(s) may be copied in format, content or intent without permission in writing from the Author. Dis-assembly or reverse engineering of this calculation report or related data input form is strictly prohibited. The Author's contact information is: RPantel@Princeton-Engineering.com, web-site: www.Princeton- Engineering.com; tel: 908-507-5500 iRoof™ Structural Analysis Software www.princeton-engineering.com/framinganalysis.html STRUCTURAL ANALYSIS for the Vision Solar ROOFTOP PV SOLAR INSTALLATION Project: Angela Tangney; Location: 133 Main Street(Rte-6A), West Barnstable, MA Unknown Zip Vision Solar 511 Route 168 - Blackwood, NJ 08021 Project VS 9675.12197 Report Date: 05/11/2022 TectoniCorp, P.C. Princeton Engineering Solar, Structural, Electrical and Site Engineering 35091 Paxson Road - Round Hill, Virginia 20141 tel: 540.313.5317 - fax: 877.455.5641 - www.Princeton-Engineering.com Richard Pantel, P.E. MA License No. 49678 Civil / Structural PE Project Number: 9675.12197, Rev. 0 Prepared by: Prepared for: 1 of 11 Loading Summary Exposure and Occupancy Categories B II Wind Loading: v 140 mph Over-ridden per client request. Original data from Municipality provided wind / snow loadings. qz 29.85 psf pg 30 psf Ground Snow Load pg (Over-ridden per client request. Original data from Municipality provided wind / snow loadings.) Total Snow Load ps 20.00 psf mm ft in 1,755 5.76 69.09 1,038 3.41 40.87 1.8 19.61 kg lb 20.50 45.19 Roof Panel (Cladding) Loading Summary Module Loading Summary Upward Upward Upward Downward 1 2 3 All lb -108 -158 -158 243 Positive values indicate net downward force Lag Bolt Data Size 5/16x3.00 Pre-drill 0.16" dia Material Stainless Rack Support Lag Bolt Pull-out Calculations in US Douglas-fir Roof Framing 1 2 3 lb 108 158 158 2 2 2 2.00 2.00 2.00 lb/in 283 283 283 in 0.38 0.56 0.56 in 1.50 1.50 1.50 in 3.00 3.00 3.00 Safety Factor Bolt Pullout Per Module Connection Area (m^2, ft^2) Net total load / support point Roof Zone Pull-out for 5/16 dia bolts Min threaded inches embedment required Min threaded Inches embedment provided Min Lag Bolt length to use Number of Pullout Loads / Support Weight Module Exposure Category (ASCE 7-10 Table 26.7.3, Page 246) Building Use Occupancy / Risk Category (ASCE 7-10 Table 1.5-1, Page 2) Snow Loading Velocity qz, calculated at height z [ASD] Module Data Effective snow load on roof and modules ZNSHINE PV-TECH Co., Ltd.: ZXM6-NH120-360/M Dimensions Length Roof Zone Support Point Loads Width Loading Summary R iRoof TM Copyright © 2020 Richard Pantel. All Rights Reserved.2 of 11 Conclusions Princeton Engineering was asked to review the roof of Angela Tangney, located at 133 Main Street(Rte-6A), West Barnstable, MA by Vision Solar, to determine its suitability to support a PV solar system installation. The referenced building's roof structure has been field measured by Vision Solar on 04/04/2022. The framing calculations we prepared reflect the results of those field measurements combined with the PV solar module locations shown on the construction PV solar roof layout design prepared by Vision Solar. Loads are calculated to combine the existing building and environmental loads with the proposed new PV array loads. Vision Solar has selected the EcoFasten Solar RockIt Rail racking system. The racking and support stanchions shall be placed as shown on the plans prepared by Vision Solar, dated 04/04/2022, and shall be fastened to the roof deck using lag bolt sizes as indicated in this report. Rack support spacing shall be no more than shown on each calculation. Note that support points for alternating rows shall share the same rafter. Intermediate rows shall move the support points to laterally the next rafter. 7-10 NE 03.jpg Google Location Map Framing Summary Based upon the attached calculations, the roofs are capable of supporting the additional loading for the proposed Vision Solar PV system along with the existing building and environmental loads. Bracket to Roof Framing Lag Bolts US Douglas-fir rafters have a bolt pullout strength of 283 lb / inch of thread using the 5/16" dia. fasteners. In order to maintain at least a 2X Safety Factor for pullout, 1.5 inches of THREAD embedment are required. Use a 3.00" x 5/16" stainless lag bolt, or larger, in order to achieve the above specified embedment into each joist at each rail support point. Predrill with a 0.16" dia pilot hole. References and Codes: 1) ASCE 7-10 Minimum Design Loads for Buildings and Other Structures 2) IBC 2015 including MA wind / snow amendment 3) 780 CMR: MA IBC Wind Amendment for wind and snow loads 4) American Wood Council, NDS 2005,Table 11.2A, 11.3.2A. Notes: (1) Bolt threads must be embedded in the side grain of a rafter or other structural member integral with the building structure. (2) Lag bolts must be located in the middle third of the structural member. (3) Install lag bolts with head and washer flush to surface (no gap). Do not over-torque. Loading Summary R iRoof TM Copyright © 2020 Richard Pantel. All Rights Reserved.3 of 11 5) American Wood Council, Wood Structural Design, 1992, Figure 6. Loading Summary R iRoof TM Copyright © 2020 Richard Pantel. All Rights Reserved.4 of 11 Roof Structural Calculations for PV Solar Installation Array AR-1 Location: MP1 Member:Rafter - Total Length 18 ft, Unsupported 8.35 ft deg.34.02 ft.49.75 ft.18.83 ft.30.00 Roof Wind Zone Width use, a =3.00 ft Wind Velocity Pressure, q z evaluated at the height z q z=29.85 psf Vasd q z=18.10 psf Basic wind pressure V=140 mph Framing Data 3 # Rafters / Rack Support Width 1 4.00 Rack Support Spacing (ft) in 16.00 48 Max. Rack Support Spacing (in) ft 18.00 2 Max # of mod's / Rafter Member * Mem properties based upon field measurements (1)1.5x5.5 Rafter 1.15 psi 770 psi 1,400 16.00 Collar tie OC spacing, in. Uphill Dist Between Mounting Holes (ft) Module Data ZNSHINE PV-TECH Co., Ltd.: ZXM6-NH120-360/M kg lb psf load 20.50 45.19 2.30 1.27 2.8 0.14 21.77 48.0 2.45 Units Value Description psf 1.29 psf 4.40 0.50 in. Plywood w/ Standard Asphalt Shingles Portrait Rack Support Spacing and Loading ft 4.0 ft 5.8 sf 11.5 in 1.0 0.08 ft ft 18.00 ft 8.35 ft 8.35 180 Use max delta 1/x for deflection Rafter segment to calc Maximum member free span Rafter btwn CT & KW Free span Deflection Ratio h Interior North 0.12% Framing Member 4 Stanchions Total Module and Support load Module Uphill gap between modules Roof Data Angle of plane of roof from horizontal, in degrees Length of Building, in feet (meters). Width of Building, in feet (meters). Height of Building, in feet (meters). Rafter / Truss OC Wood source, moisture content Wood type Ө L W # Framing Members / Support Max Shear parallel to grain Module Orientation Across rafters US Douglas-fir Along rafter slope Area / support point Weight Member Total Length Member Properties Name Max Shear perp. to grain Existing Dead Loads Roof Deck & Surface Repetitive Member Factor (Cr) Member Total Length Array AR-1 iRoof TM Copyright © 2020 Richard Pantel. All Rights Reserved.5 of 11 0.83 ft 4.25 ft . ASCE 7-10 Chapter 2 Combinations of Loads, Table 2.4, Page 8 (in psf) 1 2 3 1, 2 & 3 Module Upward Module Upward Module Upward Downward 2.45 2.45 2.45 2.45 20.00 20.00 20.00 20.00 -15.95 -19.57 -19.57 15.21 2.4 Combining Nominal Loads Using Allowable Stress Design (in psf) 2.4.1 Basic Combinations. Loads listed herein shall be considered to act in the following combinations; whichever produces the most unfavorable effect in the building, foundation, or structural member being considered. Effects of one or more loads not acting shall be considered. Upward Upward Upward Downward Use this loading combination for DOWNWARD for Proposed PV Dead Load 22.45 22.45 22.45 24.29 258 258 258 280 225 225 225 243 Use this loading combination for UPWARD for Proposed PV Dead Load -4.69 -6.86 -6.86 4.88 -54 -79 -79 56 DOWNWARD Presume loading directly over member. Combined Dead and Wind Pressure Downward Loading Rafter btwn CT & KW PV Module Row Point load loc's from Left support Point Loading Comment Module Rotated 90 Degrees ft from left lb 1 3.42 0 Support outside of max stressed section 1 9.18 243 2 9.26 243 2 15.02 0 Support outside of max stressed section W = wind load Cr Factored Support point loading Support point loading 6. D + 0.75L - 0.75(0 or 0.7)eE + 0.75S 7. 0.6D + 0.6W S = snow load Eave Overhang Length past Rafter Plate D = dead load of PV Module + Stanchion Uphill Distance from Eave to Lowest Support Support point loading 2.2 SYMBOLS AND NOTATION Zones Combination Formulae Array AR-1 iRoof TM Copyright © 2020 Richard Pantel. All Rights Reserved.6 of 11 Analysis for PV impacted areas 5. Simple Beam - Exposed Roof Snow Load - Above and Below PV Units Total Allowed Check Delta @ mid span in 0.05 0.56 OK M at mid span lb-ft 137 5,504 OK Sum Downward Loading Conditions: PV; Beam DL; Exposed Roof Environmental Load Units Total Allowed Check in 0.31 0.56 OK %56%100%OK lb-ft 1,497 5,504 OK psi 2,375 8,733 OK * Loading includes member self weight & roofing materials. w loading = wind & snow on exposed areas Truss Graphing Tools Framing section with max stress: Rafter btwn CT & KW Percent Max Delta Moment fs Delta Parameter Parameter Floor CT-Ex KW-Ex P1 P2 -2 0 2 4 6 8 10 12 -1 1 3 5 7 9 11 13 15 Array AR-1 iRoof TM Copyright © 2020 Richard Pantel. All Rights Reserved.7 of 11 Roof Structural Calculations for PV Solar Installation Array AR-2 Location: MP2 Member:Rafter - Total Length 8.42 ft, Unsupported 1.78 ft deg.37.02 ft.23.25 ft.9.25 ft.30.00 Roof Wind Zone Width use, a =3.00 ft Wind Velocity Pressure, q z evaluated at the height z q z=29.85 psf Vasd q z=18.10 psf Basic wind pressure V=140 mph Framing Data 3 # Rafters / Rack Support Width 1 4.00 Rack Support Spacing (ft) in 16.00 48 Max. Rack Support Spacing (in) ft 8.42 1 Max # of mod's / Rafter Member * Mem properties based upon field measurements (1)1.5x5.5 Rafter 1.15 psi 770 psi 1,400 16.00 Collar tie OC spacing, in. Uphill Dist Between Mounting Holes (ft) Module Data ZNSHINE PV-TECH Co., Ltd.: ZXM6-NH120-360/M kg lb psf load 20.50 45.19 2.30 1.27 2.8 0.14 21.77 48.0 2.45 Units Value Description psf 1.29 psf 4.40 0.50 in. Plywood w/ Standard Asphalt Shingles Portrait Rack Support Spacing and Loading ft 4.0 ft 5.8 sf 11.5 in 1.0 0.08 ft ft 8.42 ft 1.78 ft 1.78 180 Use max delta 1/x for deflectionDeflection Ratio Free span Member Total Length Maximum member free span Rafter above Collar Tie. Rafter segment to calc Uphill gap between modules Module Orientation Across rafters Along rafter slope Area / support point Module 4 Stanchions Total Module and Support load Existing Dead Loads Framing Member Roof Deck & Surface Weight Max Shear perp. to grain Max Shear parallel to grain Name Repetitive Member Factor (Cr) Rafter / Truss OC Member Total Length Member Properties Wood type US Douglas-fir Wood source, moisture content Interior North 0.12% # Framing Members / Support h Height of Building, in feet (meters). Roof Data Ө Angle of plane of roof from horizontal, in degrees L Length of Building, in feet (meters). W Width of Building, in feet (meters). Array AR-2 iRoof TM Copyright © 2020 Richard Pantel. All Rights Reserved.8 of 11 0.83 ft 2.00 ft . ASCE 7-10 Chapter 2 Combinations of Loads, Table 2.4, Page 8 (in psf) 1 2 3 1, 2 & 3 Module Upward Module Upward Module Upward Downward 2.45 2.45 2.45 2.45 20.00 20.00 20.00 20.00 -17.04 -20.66 -20.66 15.76 2.4 Combining Nominal Loads Using Allowable Stress Design (in psf) 2.4.1 Basic Combinations. Loads listed herein shall be considered to act in the following combinations; whichever produces the most unfavorable effect in the building, foundation, or structural member being considered. Effects of one or more loads not acting shall be considered. Upward Upward Upward Downward Use this loading combination for DOWNWARD for Proposed PV Dead Load 22.45 22.45 22.45 24.54 258 258 258 283 225 225 225 246 Use this loading combination for UPWARD for Proposed PV Dead Load -5.34 -7.51 -7.51 4.88 -62 -87 -87 56 DOWNWARD Presume loading directly over member. Combined Dead and Wind Pressure Downward Loading Rafter above Collar Tie. PV Module Row Point load loc's from Left support Point Loading Comment Module Rotated 90 Degrees ft from left lb 1 1.17 0 Support outside of max stressed section 1 6.93 246 Support point loading Support point loading Cr Factored Support point loading 7. 0.6D + 0.6W Combination Formulae 6. D + 0.75L - 0.75(0 or 0.7)eE + 0.75S S = snow load W = wind load Zones 2.2 SYMBOLS AND NOTATION D = dead load of PV Module + Stanchion Eave Overhang Length past Rafter Plate Uphill Distance from Eave to Lowest Support Array AR-2 iRoof TM Copyright © 2020 Richard Pantel. All Rights Reserved.9 of 11 Analysis for PV impacted areas 5. Simple Beam - Exposed Roof Snow Load - Above and Below PV Units Total Allowed Check Delta @ mid span in 0.00 0.12 OK M at mid span lb-ft 45 5,504 OK Sum Downward Loading Conditions: PV; Beam DL; Exposed Roof Environmental Load Units Total Allowed Check in 0.00 0.12 OK %1%100%OK lb-ft 231 5,504 OK psi 366 8,733 OK * Loading includes member self weight & roofing materials. w loading = wind & snow on exposed areas Truss Graphing Tools Framing section with max stress: Rafter above Collar Tie. fs Delta Percent Max Delta Moment Parameter Parameter Floor CT-Ex KW-Ex P1 -1 0 1 2 3 4 5 6 7 -1 1 3 5 7 Array AR-2 iRoof TM Copyright © 2020 Richard Pantel. All Rights Reserved.10 of 11 Snow Loading Analysis where: Fully Exposed Exposure category Ce =0.9 Exposure Factor, Ce (ASCE 7-10 Table 7-2, Page 30) Ct =1.0 Thermal Factor, Ct (ASCE 7-10 Table 7-3, Page 30) Is =1.0 Snow Importance Factor, Is (ASCE 7-10 Table 1.5-2, Page 5) pg =30 Ground Snow Load pg (Over-ridden per client request. Original data from Municipality provided wind / snow loadings.) pf =0.7CeCtIsPg Flat Roof Snow Load, pf (ASCE 7-10 Table 7-2, Page 30) pf =18.9 psf but where Pf is not less than the following: Minimum Snow Load pm (ASCE 7-10 Table 7.3.4, Page 29) pm =20 psf. When Pg > 20 psf, then use Pf = 20 psf x Is pf =20 psf. Resultant Snow pressure to be used with Roof slope factor below ps =Cspf Sloped Roof Snow Load ps (ASCE 7-10 Table 7.4, Page 31) Roof Type Warm Roofs Roof slope factor Cs for Warm Roofs, where Ct = 1.0 Roof surface condition = Slippery Roof Cs =1.00 Roof Slope Factor, Cs (ASCE 7-10 Table 7-2a, Page 36) Total Snow Load ps =20.00 psf Roof snow load Snow Loading iRoof TM Copyright © 2020 Richard Pantel. All Rights Reserved.11 of 11 Reviewed and approved Richard Pantel, P.E. MA Lic. No. 49678 Structural / Electrical Reviewed and approved Richard Pantel, P.E. MA Lic. No. 49678 Structural / Electrical Reviewed and approved Richard Pantel, P.E. MA Lic. No. 49678 Structural / Electrical Reviewed and approved Richard Pantel, P.E. MA Lic. No. 49678 Structural / Electrical Reviewed and approved Richard Pantel, P.E. MA Lic. No. 49678 Structural / Electrical Reviewed and approved Richard Pantel, P.E. MA Lic. No. 49678 Structural / Electrical Reviewed and approved Richard Pantel, P.E. MA Lic. No. 49678 Structural / Electrical Reviewed and approved Richard Pantel, P.E. MA Lic. No. 49678 Structural / Electrical