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Wyssling C on s ul t i n g <br />76 N. Meadowbrook Drive (201) 874-3483 <br />Alpine, UT 84004 .swyssling@wysslingconsuiting.com <br />G r a v i t y L o a d s <br />E x i s t i n g Hernandez Residence <br />Roof Dead Load 1402 Alona Street <br />2.0 psf Composite Shingle Santa Ana, CA <br />1.6 psf 1/2" Plywood Sheathing <br />12 psf 2x4 @ 16 in. o.c. <br />1.0 psf Ceiling, Mechanical, Electrical <br />1.2 psf Miscellaneous <br />7.0 pst ?TOTAL <br />S econd F l o o r D e a d L o a d <br />O psf Floor Finishes <br />O psf _1 1/8" Subfloor Sheathing <br />Opsf ?_ Joists @ 16'a.c. <br />Opsf Partitions <br />Opsf Ceiling, Mechanical, Electrical <br />sf___Miscellaneous <br />Opsf TOTAL <br />Roof Live Load Floor Live Load <br />20 psf 0 psf <br />Roof Snow Load <br />Ground SnowLoad= _ 0? psf (to be divided by cosine o f r o o f angle for horizontal projection ASCE 7 Sec. 7.4) <br />pe= 0 . 7 C . C , I p g = O p sf C .=1 ,C ,=1 .1 Flat Roof Snow Load (ASCE 7-16 Eq. 7.3-1) <br />C = 0.89 ASCE 7-16 Figure 7.4-1 <br />Additional <br />Roof Dead Load - New Solar Panels <br />3 psf <br />Roof Live Load at Solar Panels <br />© psf <br />R oof Snow Load at Solar Panels <br />0 psf Sloped Roof Snow Load (ASCE 7-16 Eq. 7.4-1) <br />T o t a l <br />Total Existing Roof Load = (DLagor + Max(LLgoor oF $)) Areagoor <br />65691 Ibs <br />Signed 4 /26 /20 23 <br />Total New RoofLoad = (DLgoor + DLapp + Max(LLgoor oF S)) Areagoor <br />59514 Ibs <br />Change in Demand= (Total New Roof Load - Existing Roof Load) / Existing R oo f Load <br />9 . 4 0 % <br />T o t a l N ew G r a v i t y L oads are less t h a n E x i sti n g L oads. O K <br />2021 IEBC Section 805.2 states: <br />?Any existing gravity load-carrying structural element for which an alteration causes an increase in design gravity load <br />of more than 5 percent shall be strengthened, supplemented, replaced or otherwise altered as needed to carry the <br />increased gravity load required by this code for new structures.? <br />2402 N Alona St <br />06/06/23