Structures, concrete & site works

Civil & Structural calculators

Calculators for beam design, concrete quantities, reinforcement and site earthworks — first-principles structural mechanics with metric and imperial units.

• Beam Deflection & Bending Calculator
  Deflection, moment, shear and bending stress for the five standard beam cases — with the span/N ratio you actually check against.
• Concrete Volume Calculator
  Net volume, over-order allowance, mass, truck loads and bag counts for slabs, footings, columns, piers and stairs.
• Rebar Weight & Area Calculator
  Bar area, kg/m, total tonnage — and the mm²/m at a given spacing that your design requirement is written against.