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1,2e 2n,2r,3e 3r All Zones <br />-1.95 -2.53 -3.54 0.47 <br />-10.94 -14.16 -19.84 3.96 <br />Roof Live Load (Lr) <br />Ex. Roof Design Live Load per ASCE 7-16 Table 4-1 psf 20 20 20 20 <br />PV Array Roof LL per 2016 CBC, Section 1607.12.5 psf 0 <br />ASCE 7-16 Chapter 2 Combinations of Loads, Table 2.4, Page 8 (in psf) <br />Module <br />Upward <br />Module <br />Upward <br />Module <br />Upward Downward <br />12.11 12.11 12.11 12.11 <br />20.00 20.00 20.00 20.00 <br />0.00 0.00 0.00 0.00 <br />-10.94 -14.16 -19.84 3.96 <br />2.4 Combining Nominal Loads Using Allowable Stress Design (in psf) <br />2.4.1 Basic Combinations. Loads listed herein shall be considered to act in the following combinations; whichever <br />produces the most unfavorable effect in the building, foundation, or structural member being considered. Effects of one <br />or more loads not acting shall be considered. <br />Upward Upward Upward Downward <br />ASCE 7-16 Chapter 2 Combinations of Loads, Table 2.4, Page 8 (in psf) <br />1,2e 2n,2r,3e 3r All Zones <br />Module <br />Upward <br />Module <br />Upward <br />Module <br />Upward Downward <br />14.47 14.47 14.47 14.47 <br />20.00 20.00 20.00 20.00 <br />-10.94 -14.16 -19.84 3.96 <br />Use this loading combination for DOWNWARD for Existing Dead Loads <br />32.11 32.11 32.11 33.89 <br />W = wind load <br />2.2 SYMBOLS AND NOTATION <br />Windload (psf) <br />Zones <br />2.2 SYMBOLS AND NOTATION <br />D = dead load of Existing Dead Loads and Proposed PV Dead Load <br />D = dead load of Sum Existing DL Roof Loads <br />GCp <br />Zones <br />Lr = roof live load <br />W = wind load <br />6. D + 0.75L - 0.75(0.60W) + 0.75(Lr or S or R) <br />S = snow load Zeroed out to test for IBC 5% Dead Load Only <br />Combination Formulae <br />Lr = roof live load <br />Array AR-1 iRooFATM Copyright © 2020 Richard Pantel. All Rights Reserved.6 of 9 <br />2341 S Park Dr - <br />10-26-231/22/2024