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Principles Of Steel Design2D

Introduction to Structural Steel - Theory & Concepts - Load Combinations

Overview of steel properties, history, grades, structural shapes, and design philosophies (LRFD vs. ASD).

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Interactive Load Combinations (ASD vs LRFD)

Input Service Loads (kips)

Dead Load (D): 20 kips

Live Load (L): 30 kips

Wind Load (W): 15 kips

Snow Load (S): 10 kips

ASD Required Strength ( $R_a$ )

D = 20.0
D + L = 50.0
D + S + 0.75L = 52.5
D + 0.6W = 29.0

Governing ASD Load: 52.5 kips

LRFD Required Strength ( $R_u$ )

1.4D = 28.0
1.2D + 1.6L + 0.5S = 77.0
1.2D + 1.6S + 0.5L/0.25W = 55.0
1.2D + 1.0W + 0.5L + 0.5S = 59.0
0.9D + 1.0W = 33.0

Governing LRFD Load: 77.0 kips

Introduction to Structural Steel - Theory & Concepts - Stress Strain Curve Tension Members - Theory & Concepts - Tension Capacity Tension Members - Examples & Applications - Tension Capacity Beams: Flexure - Theory & Concepts - Beam L T B Curve