The Floor Joist Hanger Count calculator computes the number of joist hangers required to hang joists or i-joists for a floor or deck based on the dimension of the room or deck and the on-center joist separation.
Floor Joist Hanger Count Instructions
(W) - Enter the width of the floor across the joists
(L) - Enter the length of the floor parallel to the joists
(oC) - Enter the On-center Separation distance between joists
Floor Joist Hanger Count: The calculator computes the total number of hangers needed for the joists.
The Math / Science
The algorithm assumes two hangers per joist, one on each end, and that none are needed for the end plates.