huella y peralte 10
In a ladder the footprint is the flat depth of each rung and the cant is the height from rung to rung. In other places they also say footprint and counter-footprint, step and counterstep, step and partition or pedada and elevation. The law of Blondel, French architect of the eighteenth century, states that 2 footprints plus 1 cant must be equal to 64 cms. Its ideal relationship would be: the cant, vertical part of the step, 18 cms and the footprint, horizontal part, 28. Other architects somewhat decrease the 64 cms. In any case, it is necessary to take into account the space available and other circumstances when making the staircase.