Problem 1: Determine the LRFD design strengths ØP and the ASD allowable strengths Pn/ of the sections given as required by yielding of the gross section and fracture on the net section: c. A W14 x 61 using A572 Grade 42 steel (Fy= 290 MPa, Fu = 414 MPa) with two lines of 19-mm bolts in each flange (three in a line 100 mm on center). Assume bolts are not staggered. Properties of W 14 x 61: A = 11548 mm², d = 352.81 mm, b= 253.87 mm, t₁ = 16.38 mm, tw=9.53 mm. For WT 7 x 30.5 = 31.75 mm 50 200

Structural Analysis
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Problem 1:
Determine the LRFD design strengths ØP and the ASD allowable strengths Pn/ of the
sections given as required by yielding of the gross section and fracture on the net section:
c. A W14 x 61 using A572 Grade 42 steel (Fy= 290 MPa, Fu = 414 MPa) with two lines of
19-mm bolts in each flange ( three in a line 100 mm on center). Assume bolts are not
staggered. Properties of W 14 x 61: A = 11548 mm², d = 352.81 mm, b₁ = 253.87 mm,
t = 16.38 mm, t = 9.53 mm. For WT 7 x 30.5: * = 31.75 mm
50
200
75
Plate 19mm x 406mm
75
MC18 x 42.7
75
Plate 19mm x 406mm
Figure 2
75
75
Figure 1
Transcribed Image Text:Problem 1: Determine the LRFD design strengths ØP and the ASD allowable strengths Pn/ of the sections given as required by yielding of the gross section and fracture on the net section: c. A W14 x 61 using A572 Grade 42 steel (Fy= 290 MPa, Fu = 414 MPa) with two lines of 19-mm bolts in each flange ( three in a line 100 mm on center). Assume bolts are not staggered. Properties of W 14 x 61: A = 11548 mm², d = 352.81 mm, b₁ = 253.87 mm, t = 16.38 mm, t = 9.53 mm. For WT 7 x 30.5: * = 31.75 mm 50 200 75 Plate 19mm x 406mm 75 MC18 x 42.7 75 Plate 19mm x 406mm Figure 2 75 75 Figure 1
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