Neutron STEM Lab

Civil & Structural Engineering Calculators

Free civil and structural engineering calculators for beams, reactions, shear and moment, deflection, trusses, columns, foundations, hydraulics, stormwater, and surveying.

Explore Civil & Structural Engineering

Use civil and structural engineering tools for beam and truss analysis, member mechanics, geotechnical foundations, hydraulics, stormwater, surveying, and site-development calculations.

The calculators are designed for coursework and preliminary checks. They document idealizations and limitations so results are not mistaken for code-compliant final design.

Common topics

  • beam reactions
  • shear and bending moment
  • beam deflection
  • truss analysis
  • column buckling
  • bearing capacity
  • stormwater hydraulics
  • surveying

Civil & Structural Engineering tools

Open a calculator, simulator, visualizer, or reference workbench.

Civil Reference Center: labelled diagrams and key equations for civil engineering reference, materials, loads, and soils.
Civil & Structural Engineeringintroductory

Civil Engineering Reference Center

Browse detailed civil and structural references for materials, loads, section properties, soils, hydraulics, surveying, structural concepts, units, and equations.

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Geotechnical & Foundations: labelled diagrams and key equations for soil mechanics, foundations, earth pressure, and settlement.
Civil & Structural Engineeringintermediate

Geotechnical & Foundations Workbench

Free geotechnical engineering calculators for effective stress, soil relationships, bearing capacity, foundations, earth pressure, settlement, and site analysis.

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Hydraulics & Stormwater: labelled diagrams and key equations for hydraulics, stormwater, pipes, and open channels.
Civil & Structural Engineeringintermediate

Hydraulics & Stormwater Workbench

Calculate continuity, hydraulic head, Reynolds number, pipe losses, open-channel flow, pump power, orifice and weir discharge, and Rational Method runoff.

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Structural Analysis: labelled diagrams and key equations for structures, beams, trusses, and stress.
Civil & Structural Engineeringintermediate

Structural Analysis Workbench

Free structural analysis calculators for beam reactions, shear force, bending moment, deflection, section properties, truss forces, Euler buckling, and combined stress.

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Member Mechanics: labelled diagrams and key equations for mechanics of materials, bending, torsion, and connections.
Civil & Structural Engineeringintermediate

Structural Member Mechanics Workbench

Calculate member stresses, deformations, torsion, thermal restraint, eccentric loading, simplified bolt and weld demands, bearing stress, and utilization.

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Surveying & Site: labelled diagrams and key equations for surveying, site development, coordinates, and curves.
Civil & Structural Engineeringintroductory

Surveying & Site Development Workbench

Calculate coordinate geometry, bearings, traverse closure, leveling, grades, curves, plan areas, earthwork volumes, station interpolation, and cross slopes.

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