Yield-line analysis of reinforced concrete slabs.

Enter the slab dimensions, support conditions and load, and Volex Anvil finds the required moment of resistance m from the governing yield-line collapse mechanism, for one-way, two-way and irregular slabs — the upper-bound plastic method that often gives thinner slabs than elastic design.

The mechanisms follow Johansen's yield-line theory as set out in Kennedy & Goodchild, 'Practical Yield Line Design', so the required m matches the standard reference results.