Structural Engineering & Statics
where the load goes
Concept

Lower bound

2 essays name this object, across 2 fields. What follows is each of them, and the objects they name alongside it.
thrust anywhere from 3.85 to 5.23 fitsH = 3.85, leastH = 5.23, most

The line that must stay inside

A masonry arch does not stand because its shape is right. It stands because some line of compression can be drawn inside the stonework — any one will do, and there are infinitely many to choose from.

structures · arch sagging hinge at 4.69hinge at the fixed endlowest upper bound: 7.29every hinge position gives an upper bound on the collapse loadassumed position of the sagging hingecoefficient 11.66 Mp ÷ L²

After the first yield, which is not the end

A steel beam whose extreme fibre has reached yield has not failed. It has started forming a hinge, and collapse waits until there are enough hinges to make a mechanism.

internal-forces · plastic hinge

Named alongside it

The objects these essays reach for when they reach for this one.

Collapse mechanismFunicularGeometrical factor of safetyHingeHorizontal thrustMoment redistributionPlastic hingePlastic momentSafe theoremThree pinned archThrust lineUpper bound

All concepts