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Maximum Moment of a Double Angle Loaded In The Plane of Symmetry: |
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Calculation: |
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Designer/Checker: |
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Input: |
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(Note: All input Metric units are converted to English units
for the equations below and then the output English units are converted back to
Metric) |
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From AISC F9: |
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This calculation applies to a double angle loaded in the plane of symmetry. |
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Stem in tension or compression? |
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Top flange is C, NC or S? |
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Stem is C, NC or S? |
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Unbraced length (Lb - ft or m) |
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Torsional constant (J - in^4 or mm^4)* |
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Steel yield strength (fy - ksi or MPa) |
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Moment of inertia, y-axis (Iy - in^4 or mm^4) |
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Depth of the beam (d - in or mm) |
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Depth of the area in compression (y - in or mm) |
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Plastic section modulus, x-axis, (Zx - in^3 or mm^3) |
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Elastic section modulus, x-axis (Sx - in^3 or mm^3) |
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Moment of inertia, x-axis (Ix - in^4 or mm^4) |
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Thickness of angle flange (t - in or mm) |
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Width of angle flange (b - in or mm) |
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*For double angles the torsion constant, J, is equal to twice the torsion constant, J, of a single angle leg.
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Output: |
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Maximum moment of the beam, Mu = |
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