Grid tee for suspended ceiling

Abstract

A suspended ceiling grid beam is provided that has an increased beam height to provide enhanced resistance to downward deflection. The beam has a cross-section generally in the form of an inverted T, with a central web, a pair of panel support flanges extending from one edge of the web, and a reinforcing bulb extending from the other edge of the web. The reinforcing bulb has a generally planar, fin-like structure extending therefrom opposite to and generally co-planar with the central web.

1 . A grid tee for a suspended ceiling having a cross-section generally in the form of an inverted T with a central web with first and second opposed edges, a pair of support flanges extending from the first edge of the web, and a reinforcing bulb extending from the second edge of the web, the reinforcing bulb having a cross section with a narrow central portion and a relatively wider top and bottom portion. 
   
   
       2 . The grid-tee of  claim 1  wherein the narrow central portion of the reinforcing bulb includes a series of spaced apertures adapted to receive hangar wire for suspending the grid tee. 
   
   
       3 . The grid tee of  claim 1  further comprising a fin extending upwardly from the relatively wider top portion of the reinforcing bulb. 
   
   
       4 . The grid tee of  claim 1  wherein the web comprises a double layer, the layers being secured together by a plurality of stitches at spaced intervals along the web, the stitches being forced with a pair of opposed horizontally oriented cuts through the two layers and each stitch including a vertical displacement to resist motion in a vertical direction.