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Available Moment vs. Unbraced Length per AISC 13th Ed. Manual Tables 3-11 & 3-10
Inputs
Lb = 1 ft
Type W
Size W16X40
Fy = 50 ksi
1.0
Results
Plastic Unbraced Length, Lp = 5.55 ft
Inelastic LTB Unbraced Length, Lr = 15.89 ft
Nominal Plastic Flexural Strength, Mp = 304.17 kip-ft
Nominal Inelastic LTB Flexural Strength, Mr 188.71 kip-ft
Nominal Moment Strength, Mn = 304.17 kip-ft
Design Moment Strength, ØMn = 273.75 kip-ft
Allowable Moment Strength, Mn/Ω = 182.14 kip-ft
Note:
cb =
All current ASTM A6W, S, M, C and MC shapes except W21×48, W14×99, W14×90, W12×65, W10×12, W8×31, W8×10, W6×15, W6×9, W6×8.5, and M4×6 have compact flanges for Fy ≤ 50 ksi (345 MPa); all current ASTM A6 W, S, M, HP, C and MC shapes have compact webs at Fy ≤ 65 ksi (450 MPa).
0 5 10 15 20 25 30 35 40 450.00
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Plot of Available Moment vs. Unbraced Length for W16X40
Unbraced Length, Lb (ft)
Avai
labl
e M
omen
t, ki
p-ft
Created by: Rajed Maglinte
0 5 10 15 20 25 30 35 40 450.00
50.00
100.00
150.00
200.00
250.00
300.00
1
2
3
1
2
3
1
2
3
26
Plot of Available Moment vs. Unbraced Length for W16X40
Unbraced Length, Lb (ft)
Avai
labl
e M
omen
t, ki
p-ft
Created by: Rajed Maglinte