Similar to the column two-way shear the pile two-way shear is checked to make sure that the pile cap can resist the forces that have been calculated in the pile.

The single pile two-way shear check is only performed when the pile spacing is larger than Pile diameter + average reinforcement depth. Otherwise all the piles in the footing will act together which will force the beam shear or the two-way column shear to control.

The critical section for the piles is taken at d/2 using calculated concrete capacity as outlined for the column two-way shear. The critical section length assumes a circular pile cross section and is properly calculated according to the location of the pile in the interior, edge or corner of the pile.