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CITY OF SANTA ANA <br />Planning and Building Agency <br />Structural Calculations <br />For <br />Guardian Fall Protection <br />CB-18 Welded <br />CB-18 WELD ON ANCHOR (ITEM xF1) <br />INSTALL CENTERED ON BEAM <br />SEE WELDING <br />NOTES 1-5 <br />'4" MIN STEEL <br />STRUCTURE <br />* The structural capacity of the supporting structure <br />is to be verified by others. <br />Top Hoop <br />ANSI Ultimate <br />Load <br />P = <br />5000 lb <br />Diameter hoop <br />dh = <br />0.625 in. <br />Area <br />A = <br />0.307 in.2 <br />Shear <br />fv = (P/A) = <br />16 psi <br />Fu (Fy) = <br />60 Ksi <br />= <br />1.0 <br />F Allow = <br />60 <br />Factor of Safety <br />FS = Fv/fv = <br />3.7 > 1 OK <br />Top Hoop Weld <br />Load <br />P = <br />5000 lb <br />Thickness <br />tw = <br />0.133 in. <br />Area <br />Aw = 7r(d2-d12)/4= <br />0.315 in.2 <br />Shear <br />fw = P/Aw = <br />16 Ksi <br />Weld Strength <br />Fexx = <br />70 Ksi <br />Fw = <br />.6Fexx <br />42 Ksi <br />Factor of Safety <br />FS = Fw/fw = <br />2.65 > 1 OK <br />Halas Engineering <br />11711 8th Ave. NW Approved <br />Seattle Wa 98177 FOR PERMIT ISSUANCE <br />206 362-2707 <br />Master ID: <br />Date: <br />e gRl BgsR/`c�y� <br />Z <br />m <br />-).77991 <br />�'p�01Vlt <br />OF CAL <br />See also attached report <br />for 5000-pound-load test. <br />Sheet 1 of 3 <br />