Laserfiche WebLink
Project Name: ABC-84044 <br />Structural Report (v.2.3.0) Issued Date: 08/30/2023 <br />Solar Array Installation Calculations: Page | 3 <br />III.Gravity Loads <br />Roof Dead Loads Roof Dead Loads with Panels <br />Asphalt Shingles:Solar Array <br />1/2" Plywood: <br />Total Existing Dead Load:Total New Dead Load: <br />Roof Live Loads Roof Live Loads with Panels <br />Snow Loads Snow Loads with Panels <br />Ground Snow Load, pg:Thermal Factor, Ct: <br />Snow Exposure Factor, Ce:Flat Roof Snow Load, pf: <br />Snow Importance Factor, Is:Slope Factor, Cs: <br />Thermal Factor, Ct:Sloped Roof Snow Load, ps: <br />Flat Roof Snow Load, pf: <br />Slope Factor, Cs: <br />Sloped Roof Snow Load, ps: <br />Gravity Load Comparison <br />Factored Load Combinations Exist. Weight (psf) New Weight (psf) <br />1.4 DL:5.0 9.2 <br />1.2 DL + 1.6 Lr:29.9 7.9 <br /> Maximum Factored Gravity Loads: <br />% Increase in Factored Weight:-69.1% <br />Roof Live Load @ Location w/ <br />Solar Array: <br />Per Section 503.3 of the 2022 CEBC, any existing gravity load-carrying structural element for which an alteration <br />causes an increase in design dead, live, or snow load, including drift effects, of more than 5% shall be replaced or <br />altered as needed to carry the gravity loads by the CBC for new structures. <br />Since there is no increase of gravity load greater than 5%, the existing structure is adequate for the alteration. <br />Existing Design Roof Live Load <br />(reduced for sloped roof): <br />To Support Every Human and Every Company on the Planet Achieve Sustainable Living <br />420 S Broadway- 101118679 & <br />20182412 <br />3/26/2024