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: EC LI PS E <br /> ENGINEERING <br /> Project:Applied Mat-CMS5398 <br /> Stair Tread Connection Project#: 22-12-166 <br /> Date: 3/20/2023 <br /> Engineer: CCL <br /> Page: 1 of 1 <br /> Tread Information The treads shall be analyzed for the worst case load scenario of either a <br /> Depth= 12.25 in 300#concentrated load centered on the tread,or a 100 psf uniform load. <br /> Thickness= 0.125 in <br /> Stair Width= 36 in <br /> P= 300.00 lbs <br /> DL+LL= 115 psf <br /> W= 117.40 Iblft <br /> Fy= 36 ksi <br /> E= 29000 ksi <br /> I= 0.584 in4 <br /> S= 0.301 in3 <br /> Ob= 1.67 <br /> Mn= 10.836 kin Mn = FyS <br /> Mn 'fib = 6.5 kin <br /> AA(L1360)= 0.1000 in <br /> Uniform Load Point Load <br /> M R = 1.6 k*in. 2.7 k*in. <br /> I MR/M c 0.24 <1 Bending OK 0.42 <1 Bending OK <br /> AR 0.0126 in. 0.0172 in. <br /> IAR/AA 0.13 <_1 Deflection 0K 0.17 <1 Deflection OK <br /> = Mn WL2 5WL4 = =PL PL3 <br /> M` �b MR 8 AR = <br /> 384E1 MR 4 AR 48E1 <br /> Rn = FnvAb R, fl Us/1k, <br /> Welded Connection <br /> Fillet Depth= 0.125 in <br /> No Welds= 2 per side of tread <br /> Weld Length= 2 in per ea weld segment <br /> Oweld= 2 <br /> FExx= 70 ksi <br /> d Weld Length= 4 in <br /> Rnic2= 10.5 kips <br /> Rr= 0.3_kips <br /> I Check 0.03 <1--OK I <br /> 78/81 <br />