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Beam Load Calculator

Calculate structural beam loads, moments, deflections, and safety factors

Calculate Beam Analysis

Beam Dimensions

Load Properties

Advanced Properties (Optional)

How to Use the Beam Load Calculator

Getting Started

  • Select Beam Type: Choose support conditions (simply supported, fixed-fixed, cantilever)
  • Choose Load Type: Uniform distributed load or concentrated point load
  • Enter Dimensions: Beam length, width, and height for cross-section
  • Specify Loads: Enter load magnitudes and positions

Beam Support Types

  • Simply Supported: Beam resting on two supports, free to rotate
  • Fixed-Fixed: Both ends rigidly fixed, no rotation allowed
  • Cantilever: One end fixed, other end free (overhanging beam)

Load Classifications

  • Uniform Load: Constant load per unit length (dead load, live load)
  • Point Load: Concentrated force at specific location (column load, equipment)

Safety Factor Guidelines

  • Stress Safety Factor: Minimum 2.0 for most structural applications
  • Deflection Limit: L/250 for general construction, L/300 for sensitive applications
  • Green Status: Both safety factors ≥ 1.0 with stress factor ≥ 2.0
  • Professional Review: Always verify with licensed structural engineer

Frequently Asked Questions

What is the difference between moment and deflection?

Moment is the internal bending force in the beam, while deflection is how much the beam bends under load. Both must be within safe limits.

Why are there different safety factors for stress and deflection?

Stress safety prevents material failure, while deflection limits ensure serviceability (preventing cracking in finishes, proper door operation, etc.).

Can this calculator handle complex loading?

This calculator handles basic uniform and point loads. For complex loading patterns, multiple loads, or irregular shapes, consult a structural engineer.

What if my beam shows as "UNSAFE"?

Increase beam size (width/height), use stronger material, add supports, or reduce loads. Always verify solutions with a professional engineer.

How accurate are these calculations?

Based on linear elastic beam theory - accurate for typical construction applications within the elastic range. Does not account for buckling, fatigue, or dynamic effects.

What materials can I analyze?

Steel, concrete, and wood are included with typical material properties. For other materials or specific grades, input custom elastic modulus and allowable stress values.

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