Construction Calc Lab

Structure · Calculator

Beam Load Calculator

For a simply supported beam, calculate support reactions, maximum shear and maximum bending moment under a full-span UDL plus a central point load.

Project inputs

Enter your project values, then press Calculate.

How this calculator works

For a simply supported beam, calculate support reactions, maximum shear and maximum bending moment under a full-span UDL plus a central point load.

R = (wL + P)/2; Mmax = wL²/8 + PL/4
Engineering note: This calculator is for preliminary checking and education. Do not use it as the sole basis for structural design, member selection, code compliance or construction. Use applicable standards and a qualified engineer.

How to use the Beam Load Calculator

1. Enter project inputs

  • Beam span (m)
  • Uniform load (kN/m)
  • Central point load (kN)

2. Review the results

  • Reaction at each support
  • Maximum shear
  • Maximum moment

3. Check the calculation

The calculator uses the following core relationship:

R = (wL + P)/2; Mmax = wL²/8 + PL/4

Design note: This tool is intended for preliminary engineering checks, not final structural design or code compliance.

Beam Load Calculator Guide

A beam load calculator helps estimate support reactions, shear forces and bending moments for preliminary structural analysis.

Calculation formula

Load Effects depend on Span Length, Applied Loads and Support Conditions

Estimation tips

Always verify structural calculations with approved engineering design methods.

Engineering note: Use these calculations for estimation and planning. Always confirm final designs according to project requirements and applicable standards.

Beam Load Calculator FAQ

What does the Beam Load Calculator calculate?

For a simply supported beam, calculate support reactions, maximum shear and maximum bending moment under a full-span UDL plus a central point load.

What information do I need to use the Beam Load Calculator?

The calculator uses inputs such as Beam span (m), Uniform load (kN/m), and Central point load (kN). Use values from your drawings, measurements, product data, or project specifications.

How should I use the results from the Beam Load Calculator?

Use outputs such as Reaction at each support, Maximum shear, and Maximum moment for preliminary checking and comparison only. Final structural design, member selection, detailing, and code compliance should be verified by a qualified engineer using the applicable standards.