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CR LAURENCE Z-SERIES GLASS CLAMPS (03/27/2014) Page 7 of 19 <br /> For 3'x5'glass light maximum wind load: <br /> w= 110#*4/(3*5) =29.3 psf <br /> Allowable horizontal load on Z-clamp bolted to wood post: <br /> 1/4"glass clamp - <br /> H= 110#: w= 110*4/(3*5) =29.3 psf <br /> D = 24.1tt(3'x5'xl/2"glass light) <br /> 3/8"glass clamp - <br /> H= 1.166*110#= 128.3: w= 128.3*4/(3*5) = 34.2 psf <br /> 1/2"glass clamp - <br /> H= 1.294*110#= 142.3: w = 142.3*4/(3*5)= 38 psf <br /> CONCRETE ATTACHMENT <br /> 1/4"Hilti KWIK HUS-EZ(KH-EZ) screw-in anchor. <br /> Strength from ESR-3027 __ __-- <br /> Ta>_475# < WBAI4x3 <br /> is1/3}"x3"WEDGE <br /> Va>—580# BOL ANCF•tOR \ 4 <br /> Moment strength of attachment: et a ,tik� + = ' ; <br /> Nish=475#*(0.935"/2) =222"# <br /> HS =222"#/1.48"= 150# <br /> Z= (1502+24.42)1/2= 152# v' L_____ <br /> Combined case: i-.1 2 1/16" 314" <br /> 152/580 =0.26 >_0.2 therefore reduction <br /> in allowable tension load applies: <br /> [1.2/(1+0.26)]*150 = 143# <br /> Z= (1432+24.42)1/2= 145# <br /> 143/150 + 145/580 = 1.20< 1.20 okay <br /> Allowable horizontal load on Z-clamp bolted to concrete: <br /> 1/4"glass clamp - <br /> H= 143#: w= 143*4/(3*5)= 38.1 psf <br /> D=24.4#(3'x5'xl/2"glass light) <br /> 3/8"glass clamp- <br /> H= 1.166*143#= 166.7: w = 166.7*4/(3*5) =44.5 psf <br /> 1/2"glass clamp - <br /> H= 1.294*143#= 185.0: w= 185.0*4/(3*5) =49.3 psf <br /> EDWARD C.ROBISON,PE <br /> 10012 Creviston Dr NW <br /> Gig Harbor,WA 98329 <br /> 253-858-0855/Fax 253-858-0856 elrobison@narrows.com <br /> ?7' 3 <br />