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<br /> <br />Chapter VI: General Design Practices <br />Elevation <br /> <br />Elevation Sample Calculation <br /> <br />The seismic load on the house depends upon the dead load. This load must be tabulated on a <br />floor-by-floor basis as was presented in Step I Wlder Tabulate Dead Loads bv Floor. <br /> <br />Check if Snow Load must be included in Seismic calculations: <br /> <br />Reference: 1991 Unifonn Building Code <br /> <br />Ground Snow = 40 psf <br />Roof Slope, a= 18.40 <br /> <br />From Table A-23- T, Importance factor, 1=1.0 <br />From Table A-23-S, Snow Importance factor, C, = 0,6 <br /> <br />From Section 2343, Equation 43-1A <br />Pf = CIP <br />, g <br />where, <br />Pf <br />C, <br />I <br />P <br />g <br /> <br />= <br /> <br />Minimum Roof Snow Load <br />Snow Exposure Factor <br />Importance Factor <br />Basic GroWld Snow Load <br /> <br />= <br /> <br />= <br /> <br />= <br /> <br />for this house, <br />Pf= 0.6 (1.0) (40 pst) =24 psf< 30 psf <br /> <br />thus, by Section 2334(a)3 snow load is 11Qt included (it is recommended that the building official <br />be consulted if in doubt) and the total weight of20S kips as calculated in Step 1 under Thml <br />Weiihts by Level can be used in this seismic analysis, <br /> <br />150f44 <br /> <br />VI - E,60 <br /> <br />Engineering Principles and Practices of Retrofitting Flood-Prone Residential Structures <br />January 1995 <br />