Abstract: A ladder having a right box rail having an outer web with an outer opening and an inner web with an inner opening. The ladder having a left box rail in parallel and spaced relation with the right box rail. The ladder comprises a hollow collar disposed in between the inner opening of the inner web and the outer opening of the outer web. The collar having a stem having a plurality of segments. The segments separated by slots. The ladder having a first rung attached to the right and left box rails. The first rung having a right end that extends through the outer opening, the collar and the inner opening. A method for using a ladder by a user. A method for forming a ladder.

Abstract: A ladder having a right box rail having an outer web with an outer opening and an inner web with an inner opening. The ladder having a left box rail in parallel and spaced relation with the right box rail. The ladder comprises a hollow collar disposed in between the inner opening of the inner web and the outer opening of the outer web. The collar having a stem having a plurality of segments. The segments separated by slots. The ladder having a first rung attached to the right and left box rails. The first rung having a right end that extends through the outer opening, the collar and the inner opening. A method for using a ladder by a user. A method for forming a ladder.

Abstract: A staircase cabinet comprises a plurality of treads each having an outer edge, an inner edge and a back surface; a pair of outer stringers both for defining opposed walls of the cabinet and supporting the outer edges of each tread; an inner stringer for supporting the inner edges of each tread; and fasteners for attaching the treads to the inner stringer and the outer stringers in alternating arrangement on respective opposite sides of the inner stringer to define an alternating staircase for use between a lower level and an upper level, the back surface of the treads and the outer stringers defining a cabinet space. The outer stringers comprise planar wooden sheets having an outer surface, and the fasteners pass only partially through the planar members to maintain the outer surface unbroken by the fasteners.