Patent ID: 6634145
Filing Date: 2003-10-21
Classification: E04F

Abstract:
A method of constructing a modular stone stair having a plurality of steps, a width, a depth and a height, using a plurality of stone stair modules, the modules comprising stringers, treads, and risers, each module having a width, a depth and a thickness, the thickness of the stringers being equal to a sum of the thicknesses of a tread and a riser, the plurality of stringers having a plurality of modular lengths, the treads having a width equal to the width of the stair, the risers having a plurality of widths such that the width of a set of an integral number of risers is approximately equal to the width of the stair, and the depth of a riser is approximately equal to or slightly less than the depth of a tread, the method comprising the steps of:a) placing three parallel spaced apart sets of stringers lined up with the back of the stair, each set comprising at least one stringer, the stringers in the set being chosen to have a total depth equal to the depth of the stair less the depth of a riser; b) placing a plurality of risers in front of the stringers, the plurality of risers having a combined width approximately equal to the width of the stair; c) placing a tread onto the risers, adjacent to the stringers; and d) repeating steps a) through c), with the total depth of the stringers being reduced in each step by an amount equal to a desired overlap, until a desired number of stairs have been assembled.