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• Project Title: <br /> Engineer: <br /> LUMLAUF ENGINEERS Project ID:Project Descr: <br /> Printed:14 APR 2021. 5:40PM <br /> File:Zap.ec6 <br /> Point Load on Slab <br /> Software copyright ENERCALC,INC.1983-2020,6uild:12.20.8.24 <br /> Lic.#:KW-06011909 L2 Engineers <br /> DESCRIPTION: Stair Mid Landing <br /> Code References <br /> Calculations per IBC 2018, CBC 2019,ASCE 7-16 <br /> Load Combinations Used :ASCE 7-16 <br /> Analytical Values <br /> d-Slab Thickness 5.0 in Ks-Soil Modulus of Subgrade Reaction 100.0 pci <br /> FS-Req'd Factor of Safety 3.0:1 Ec-Concrete Elastic Modulus 3,122.02 ksi <br /> fc-Concrete Compressive Strength 3.0 ksi <br /> -Poisson's Ratio 0.150 <br /> Min.Adjacent Load Distance 36.025 in <br /> Analysis Formulas <br /> Pn=1.72 [ (Ks R1 /Ec)10,000+3.6]Fr d"2 Min Adjacent Column Distance=1.5*([Ec d"3/(12*(1-u"2)Ks]" 1/4) <br /> Ks=Soil modulus of subgrade reaction Ec=Concrete elastic modulus <br /> R1 =50%plate average dimension=sqrt(PIWid*PILen)/2 d-Slab Thickness <br /> Ec=Concrete elastic modulus u-Poisson's ratio <br /> Fr-Concrete modulus of rupture=7.5*sgrt(fc) Ks=Soil modulus of subgrade reaction <br /> d-Slab Thickness <br /> Load&Capacity Table <br /> Plate (in) R1 Applied Concentrated Load on Plate-(kip) Governing Pu Pn <br /> Load ID Wid Len (in) D Lr L S W El Ld Comb (kip) (kip) Check <br /> 1 3.50 3.50 1.75 0.33 1.05 +D+L 1.4 73.5 Pass,FS=53.26>=3 <br />