Moment Frame Analysis Calculator
Analyze lateral forces on a moment frame using the portal method: column shear, moments, base shear, and drift.
Inputs
kN
bays
m
m
stories
Results
Exterior Column Shear
16.67 kN
Total Base Shear
300 kN
Column Moment29.17 kN·m
Beam Moment (interior)58.33 kN·m
Estimated Lateral Drift0.01 mm
How to Use This Calculator
- Enter the number of bays, bay width in feet, and number of stories with story height in feet.
- Input column and beam section properties (moment of inertia) for each member group.
- Set the lateral load distribution in kips per story level.
- Review the Story Drift, Overturning Moment, and Member End Moments.
- Check that story drift ratios are within code limits (typically H/400 for wind, H/200 for seismic).
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