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Eco, Structural Calculations, <br /> REFERENCE CODES & STANDARDS 2/23/2023, Pg. 2 of 25 <br /> International Residential Code,IRC 2018 ��P� <br /> Washington State Building Code, SBC 2018 <br /> • National Design Specification for Wood Construction,NDS 2018 <br /> • Building Code Requirements for Structural Concrete,ACI 318-19 <br /> Minimum Design Loads for Buildings and Other Structures, ASCE 7-16 <br /> Steel Construction Manual, 15`h Edition,AISC 2015 <br /> North American Standard for Cold-Formed Steel Structural Framing, AISI 2015 Ed. <br /> TABLE 1: LATERAL DESIGN CRITERIA <br /> Design Parameter Value Source <br /> Seismic Design Category D1 IBC 1613 <br /> Risk Category II IBC Table 1604.5 <br /> Wind Exposure Category B IBC 1609.4.3 <br /> Basic Wind Speed 110 mph IBC Figure 1609.3(1) <br /> Design Wind Load 16.00 psf ASCE 7-10 28.6-1 <br /> TABLE 2: VERTICAL DESIGN CRITERIA <br /> Load Source Live Load Dead Load <br /> Roof Diaphragm 20 psf 15 psf <br /> Floor Diaphragm 40 psf 12 psf <br /> Decks & Balconies 60 psf 10 psf <br /> Ground Snow Load 25 psf - <br /> Roof Snow Load 25 psf - <br /> Exterior Wall - 12 psf <br /> Interior Wall - 10 psf ! <br /> Interior Partition - 8 psf <br /> T ABLE 3: DEFLECTION LIMITS <br /> Structural Member Live Snow Live+Dead <br /> Roof(plaster ceiling) L/360 L/360 L/240 <br /> Roof(non-plaster ceiling) L/240 L/240 L/180 <br /> Roof(not supporting ceiling) L/180 L/180 L/120 <br /> Floor Members L/360 - L/240 <br /> Horizontal Deflection (any case) - - L/200 <br /> Farm Buildings & Greenhouses - - L/180 <br /> Long Spans (>20 feet) - - L/480 <br /> Sliding Glass Doors - - L/600 <br /> Note: The above minimum deflection limits are based on the 2018 IRC Table R301.7. <br /> Higher deflection values may be used at the engineer's discretion to improve performance <br />