Abstract: The present invention is a prefabricated step and stairway system, where the prefabricated step is preferably a precast concrete step having an elongate body substantially triangular in cross-section having a first side as a tread, a second side as a riser adjacent the first side, and a third side, and the step further has a first and second end which preferably include an attachment member to attach the step between a pair of stringers. The attachment member is preferably integrated metal plates proximate to the first end and second end to facilitate attachment between a pair of stringers, and preferably includes one or more reinforcing members attached to the metal plates and integrated throughout the length of the body to strengthen the step. The prefabricated steps are rigidly secured either to intermediate runners between a pair of stringers, upon a brace, or directly to stringers to form a stairway.

Abstract: Provided is a composite building panel including, in accordance with a preferred embodiment, a planar concrete slab portion at the front and a plurality of elongated frame members at the rear. Each frame member includes a first end and an opposite second end that define a length therebetween, and a front side and a rear side which define a width therebetween which is less than the length. The front side of each frame member is imbedded in the concrete slab portion along the entire length of the frame member, and the rear side of each frame member is oriented opposite from the concrete slab portion. The frame members are, in accordance with preferred embodiments, all oriented on one side of the concrete slab portion and function to reinforce the concrete slab portion; to define cavities therebetween for the installation of plumbing, electrical wiring, and insulation; and to provide for the attachment of wallboard.