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Project Name:Samueli Academy-Bldg C Engineer:Elie Sayegh, PE <br />Project No.:1074220072 Date: <br />Roof LLr1 20 psf reducible?N to:20 psf <br />Max Repurposed LL:14.40 psf based on: Cd DEAD * Roof Live Load / Cd LIVE where Cd DEAD is 0.9 and Cd LIVE is 1.25 <br />Roof LLr2 Proposed:0 psf Per ASCE7-16 Chapter 4, Section 4.17 <br />Slope:3 12 Factor:1.03 <br />Roofing: <br />Sheathing: <br />Insulation: <br />Roof Framing: <br />Ceiling Framing: <br />Ceiling: <br />Other: <br />Other: <br />Other: <br />Other: <br />Panels DL: 3.0 psf A roof :5376 sq.ft. <br />DL r1 Current: 16.0 psf A arrays :2252 sq.ft. <br />DL r2 Proposed: 18.9 psf <br />Total (E) Load: Wex = (DLr1 + LLr) Aroof = 193.4 kips <br />Total Prop. Load Wprop = (DLr1 + LLr ) (Aroof - Aarrays) + (DLr2 Proposed + LLr Proposed) (Aarray)= 155.1 kips <br />( Wprop - Wrex ) / Wex = -19.8% <br />Reduction in Total Gravity Loads, PV Addition is Acceptable <br />Additionally DL not exceeding the above calculated repurposed LL is acceptable. See further calculations for additional <br />justifications. <br />Proposed Loads: <br />DL r1:16.0 PSF <br />Miscellaneous | 1 PSF <br />Miscellaneous | 1 PSF <br />2x10 @ 16" o.c. <br />1/2" drywall <br />1.0 PSF <br />0.0 PSF <br />1.0 PSF <br />1.0 PSF <br />0.0 PSF <br />1.0 PSF <br />0.0 PSF 0.0 PSF <br />15.5 PSF <br />Insulation 0.75 <br />3.0 PSF 3.1 PSF <br />2.5 PSF 2.6 PSF <br />2.0 PSF1.9 PSF <br />1.3 PSF 1.3 PSF <br />Roof Trusses at 24" o.c. <br />3.0 PSF 3.1 PSF <br />1/2" Structural Sheathing 1.8 PSF 1.9 PSF <br />Asphalt Comp Shingles <br />Dead Loads <br />2/16/2024 <br />B. Gravity <br />Building Description <br />1-story type V structure with 1/2" thick sheathing min, 2x roof truss/rafters. <br />Live Loads (ASCE 7) <br />ROOF <br />Element Details Weight Slope Adj. Weight <br />1/2 or 5/8" SHTG, 2x4/6 sub-purlins, bar joists, girders joists, and steel col. <br />P-9 <br />1901 N Fairview St & Bldg A, B, <br />C, F & 1919 N Fairview St Bldg E <br />4/11/2024