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, ECLIPSE <br /> ENGINEERING <br /> Project:Amazon DWS4 <br /> Stair Stringer Analysis Project#:21-10-166 <br /> Date: 10120/2021 <br /> Engineer: BA <br /> Page: 1 of 1 <br /> Stringer Information <br /> Height= 96 in I <br /> Length= 48 in Pro <br /> Stair Width= 36 in <br /> Leff.= 107.33 in <br /> DL+LL= 140 psf ,, <br /> W= 210 Iblft 'J <br /> Stringer= Rolled S "n <br /> S <br /> Fy= 40 ksi —F l Rise <br /> Run <br /> E= 29000 ksi -' <br /> I= 12.128 inu e <br /> ZX= 2.755 in3 L„... <br /> Mn= 110.2 kin 2 21164 Length - <br /> Mn /O b = 66.0 kin <br /> MR = 25.2 k'in <br /> W LZ <br /> I MR/Mc 0.38 51 Bending OK I Mn = FyZx MR = <br /> 8 <br /> AA(L1240): 0.4472 in <br /> AR= 0.0860 in = Mn __ 5W L4 <br /> I AR/isA 0.19 51 Deflection OK I Mc " AR b 384E1 <br /> Upper Connection <br /> Bolts: 318"-A307 Bolt Capacity(per Bolt) <br /> No.Bolts= 2 per Stringer Shear Capacity Bearing Capacity <br /> 0= 2 Rn: 2.65 k 4.87548 k <br /> Fu= 58 ksi Rn/II: 1.33 k 2.43774 k <br /> tmin= 0.0934 in. !. RJR,: 0.35 <1—OK 0.19 51--OK I <br /> Lc= 1 in. Rn = 1.2LetF, <br /> db= 0.375 in. Rn = FnvAb Rn, < 2.4dbtFu <br /> Ab= 0.1104 in2 <br /> F,= 24.0 ksi Eclipse Engineering,P.C.assumes no liability or responsibility for determining if <br /> R,(Total)= 0.94 k the stairs are in conformance to any federal,state,and/or local building codes.It is <br /> Rr(Bolt)= 0.47 k the responsibility of the purchaser and end user to verify(with local authorities)the <br /> stairs suitability and code conformance for it's intended usage. <br /> 10/20 <br />