Use this construction calculation for preliminary quantity, geometry, material, load, or coverage planning when dimensions and units have been measured consistently.

Uniform load (N/m)

Required number input.

Support span (m)

Required number input.

Find maximum positive bending moment of a simply supported beam carrying a constant uniform load over its full span. The tool evaluates the supplied inputs together and returns the named outputs below; it does not infer omitted operating conditions or change the units shown.^[1]

Maximum bending moment (N·m)

The resulting maximum bending moment returned as a number.

• The structural relationship assumes the stated support, section, material, and load model. Connections, lateral stability, buckling, shear, vibration, fire, durability, load combinations, and code factors require a complete design check.
• Use finite inputs in the displayed units and preserve more precision than the final presentation requires. Independently verify safety-critical, financial, compliance, or production decisions.

Verify dimensions on site, use current product data and local code requirements, include an explicit waste or safety allowance where appropriate, and obtain qualified structural, electrical, plumbing, or geotechnical review when required.

• Simple Beam Deflection

  Estimate midspan elastic deflection of a prismatic, simply supported beam under uniform load using small-deflection Euler–Bernoulli theory; not a code check.

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  Find equal center-to-center spacing for bars whose first and last centers span a known distance.

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  Calculate straight berm volume with a trapezoidal cross-section and constant top and base widths.