Free Online Truss Calculator
Build a planar truss, apply nodal loads and supports, and solve for member axial forces and nodal displacements. Tension > 0, compression < 0.
Global material defaults
Tap a node or member on the canvas to edit its properties. Members with blank A/E use the defaults above.
Moving load
A train of wheels and lane loads that rides along one chord. Drag it on the canvas — member forces are recomputed as it rolls. Each load is carried to the two panel points either side of it by the lever rule, the way a floor beam and stringers deliver it.