US 7,587,877 B2
Cold-formed steel joists
Michael Richard Strickland, Richmond Hill (Canada); and Lei Xu, Waterloo (Canada)
Assigned to Best Joist Inc, Richmond Hill, ON (Canada)
Filed on Oct. 28, 2004, as Appl. No. 10/974,964.
Application 10/974964 is a continuation in part of application No. 10/721610, filed on Nov. 25, 2003, abandoned.
Claims priority of provisional application 60/514622, filed on Oct. 28, 2003.
Prior Publication US 2005/0144892 A1, Jul. 07, 2005
Int. Cl. E04C 3/00 (2006.01); E04C 3/02 (2006.01); E04B 1/18 (2006.01); E04H 12/00 (2006.01)
U.S. Cl. 52—837  [52/634; 52/638; 52/650.2; 52/693; 52/831] 53 Claims
OG exemplary drawing
 
1. An upper chord bearing joist comprising:
an upper elongate chord member being cold-formed from a unitary piece of sheet steel and including an upper bearing portion integrally formed with at least one lower bearing extension so as to produce a rigid member, the upper bearing portion being folded over the at least one lower bearing extension so that a bottom surface of the upper bearing portion directly contacts a top surface of the at least one lower bearing extension to reduce a width to thickness ratio of the rigid member, and an integral web receiving portion orthogonal thereto and having two integral web receiving tabs and a pair of integral inner flange portions, each inner flange portion extending substantially perpendicularly from one of the web receiving tabs so as to be in a spaced relationship to the rigid member along a length of the upper, chord member, wherein the upper bearing portion, the at least one lower bearing extension, the two web receiving tabs, and the pair of inner flange portions are a unitary structure made from sheet steel;
a lower elongate chord member, wherein the upper chord member extends longitudinally beyond the lower chord member at each end thereof; and
a generally planar steel web attached to the web receiving portion of the upper chord member between the two web receiving tabs and attached to the lower chord member.