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Roof Structural Calculations for PV Solar Installation Array AR-1 <br />Location: MP 2 <br />Member:Rafter - Total Length 12 ft, Unsupported 12 ft <br />deg.13.98 <br />ft.28.00 <br />ft.12.00 <br />ft.15.00 <br />Roof Wind Zone Width <br />use, a =3.00 ft <br />Wind Velocity Pressure, q z evaluated at the height z <br />q z=13.77 psf Vasd q z=8.34 psf Basic wind pressure <br />V=95 mph <br />Framing Data <br />3 # Rafters / Rack Support Width <br />1 6.00 Rack Support Spacing (ft) <br />in 24.00 72 Max. Rack Support Spacing (in) <br />ft 12.00 2 Max # of mod's / Rafter <br />Member * Mem properties based upon field measurements <br />(1)2x6 Rafter <br />1.15 <br />psi 530 <br />psi 1,100 24.00 Collar tie OC spacing, in. <br />Uphill Dist Between Mounting Holes (ft) <br />Module Physical Data <br />kg lb psf load <br />21.70 47.84 2.28 <br />0.73 1.6 0.08 <br />22.43 49.4 2.35 <br />Units Value Description <br />psf 1.01 <br />psf 11.10 0.50 in. Plywood w/ Roof Tile <br />Rack Support Spacing and Loading <br />ft 6.0 <br />ft 5.7 <br />sf 17.0 <br />in 1.0 0.08 ft <br />ft 12.00 <br />ft 12.00 <br />ft 12.00 <br />180 Use max delta 1/x for deflection <br />Free span <br />Deflection Ratio <br />Rafter segment to calc <br />Maximum member free span Rafter span <br />White 0.12% <br />Framing Member <br />4 Stanchions <br />Total Module and Support load <br />Module <br />Geometric Data <br />Angle of roof plane from horizontal, in degrees <br />Length of roof plane, in feet (meters) <br />Plan view width of roof plane, in feet (meters) <br />Average height of roof above grade, in feet (meters) <br />Rafter / Truss OC <br />Wood source, moisture content <br />Wood type <br />Ө <br />L <br />W <br />h <br />Across rafters <br />Uphill gap between modules <br /># Framing Members / Support <br />Max Shear parallel to grain <br />US Spruce <br />Along rafter slope <br />Area / support point <br />Weight <br />Member Total Length <br />Member Properties <br />Name <br />Max Shear perp. to grain <br />Existing Dead Loads <br />Roof Deck & Surface <br />Repetitive Member Factor (Cr) <br />Member Total Length <br />Array AR-1 iRooFATM Copyright © 2020 Richard Pantel. All Rights Reserved.5 of 13 <br />2341 S Park Dr - <br />10-26-231/22/2024