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Date: 27-Sep-17 <br /> )1.STARK U RamJack West Foundation Underpinning Designed by: NDS <br /> FOUNDATIONS 7,2 2501 51st Street SW <br /> rt Everett, WA <br /> D. <br /> Job No.: 17.174.RAM <br /> Design Criteria <br /> Code(s): <br /> International Building Code(IBC)2012/2015 <br /> ASCE 7-10 <br /> Design Loads: <br /> Dead: Soil: <br /> Roof= 15 psf Allow Lateral Bearing Pressure= 100 psf/ft (IBC Table 1806.2) <br /> Chimney = 45 psf Active Pressure= 60 psf/ft <br /> Second Floor= 15 psf <br /> First Floor= 15 psf <br /> Walls= 8 psf <br /> 8"Foundation Wall = 100 psf <br /> Live: <br /> Roof(snow) = 25 psf <br /> Chimney= 0 psf <br /> Second Floor= 40 psf <br /> First Floor= 40 psf <br /> Wind: (not applicable) <br /> Exposure = C Risk Category= II <br /> Wind Speed,V= 120 mph Kzt= 1.0 <br /> Gust Effect Factor, G= 0.85 Kd= 0.85 <br /> Internal Pressure Coefficient,GCP;=-0.18 Kz= 0.98 <br /> External Pressure Coefficient,Cv= 0.8 Height, hz= 30 ft <br /> Design Wind Pressure: Design Load Combo= D+0.6W <br /> where: p,v= qz(GCp-GCP;) W= 0.6 <br /> qz= 0.00256 lcKztKdV2 <br /> Therefore: <br /> qz= 30.7 psf <br /> pw= 26.4 psf <br /> Factored Wind Pressure, p'w= 15.8 psf(say 16 psf) <br />