Patent ID: 6212846
Filing Date: 2001-04-10
Classification: E04B,E04C,Y10T

Abstract:
A structural, load bearing building member, supported on bearing walls or beams, consisting of a series of isosceles joists, comprising:a. a pair of wood flanges, elongated, rectangular, each having a surface and substantially longitudinally extendedb. a wood web member connecting the said pair of flanges along their diagonal, at an angle other than 90 degrees with said surfacec. means for adhesive joining said pair of flanges to said web with a joint along the said flange diagonal, whereby a half-joist is formedd. where said isosceles joist is comprised of two said half-joists, diagonally disposed to each other where their said top flanges are secured together in a face-to-face relation, and the said bottom flanges on adjacent said isosceles joists are secured together in a face-to-face relatione. where said combined top flanges are longer than the said combined bottom flanges, and set directly upon a load support system, and said bottom flanges are secured at the perimeterf. said isosceles joist structure displays composite and integrated characteristics of a series of interconnected triangular truss units providing the rigidity and stability incident to structural triangulation, providing diaphragm strength without structural roof or floor decking, whereby said isosceles joist can provide support of roof or floor structure which are secured to said top flanges.