Patent ID: 6993879
Filing Date: 2006-02-07
Classification: E04B,E04C

Abstract:
1. A truss work, comprising: an upper grid disposed generally in a first plane, the upper grid having a plurality of spaced apart generally parallel longitudinal members and a plurality or spaced apart generally parallel transverse members extending between and interconnecting the longitudinal members: a lower grid disposed generally in a second plane spaced below and generally parallel to said first plane, the lower grid having a plurality of spaced apart generally parallel longitudinal members and a plurality or spaced apart generally parallel transverse members extending between and interconnecting the longitudinal members, the longitudinal members in the lower grid positioned such that each of the longitudinal members in the lower grid are not directly below any of the longitudinal members in the upper grid, the transverse members in the lower grid positioned such that each of the transverse members in the lower grid are not directly below any of the transverse members in the upper grid; and a plurality of interconnecting members extending between the upper and lower grids including a plurality of vertical members, one vertical member being provided at each point that a longitudinal member in the upper grid passes above a transverse member in the lower grid and at each point that a transverse member in the upper grid passes above a longitudinal member in the lower grid; wherein the truss work is integrally formed as one piece.