Load Calculator
Calculate structural beam loads, distributed loads, and point loads for basic engineering analysis.
This calculator provides simplified beam analysis for simply-supported beams only. It does not replace professional structural engineering analysis. Always consult a licensed engineer for structural design.
Enter load parameters and click Calculate
What This Calculator Does
This basic structural load calculator computes reactions, maximum bending moment, and maximum shear force for simply-supported beams under uniform distributed loads or single point loads. It is an educational reference tool for preliminary analysis.
The Formula
For uniformly distributed loads, the maximum bending moment occurs at midspan and equals wL squared over 8. For a point load, the maximum moment occurs under the load and depends on its position along the beam.
Step-by-Step Example
Select load type
Choose uniform distributed load or single point load.
Enter load and span
Example: 5,000 lbs total distributed load on a 12-foot span.
For point loads
Also enter the distance from the left support to the load.
Review results
Distributed: w = 417 lbs/ft, M_max = 7,500 ft-lbs, V_max = 2,500 lbs.
Real-World Use Cases
Preliminary Design
Quick checks during early design stages before detailed engineering analysis.
Education
Students learning structural mechanics can verify hand calculations.
Renovation Planning
Rough assessment of existing beam adequacy when adding loads.
Common Mistakes to Avoid
Using this for actual structural design. This is a simplified tool for education and preliminary estimates only.
Not accounting for the beam self-weight as part of the distributed load.
Assuming simply-supported conditions when beams are actually fixed or continuous.
Frequently Asked Questions
Accuracy and Disclaimer
WARNING: This calculator is for educational and preliminary estimation purposes ONLY. It does NOT replace professional structural engineering analysis. Never use these results for actual construction without review by a licensed Professional Engineer (PE). Improper structural design can result in catastrophic failure and loss of life.
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