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

50.00

100.00

150.00

200.00

250.00

300.00

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2

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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

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