Abstract: An underfloor cable tray assembly is combined with a raised floor and is intermediate the raised floor and a subfloor which supports both in an electrical equipment room. Uniformly spaced stanchions support raised floor joists and floor panels to establish the raised floor for the equipment. Instead of having the communication cables strung without order on the subfloor, the underfloor cable tray assembly is provided to route such communication cables in an orderly manner among the various pieces of equipment. The cable tray assembly is formed from modular cable tray sections having a U-shape in cross section and selected from straight sections, horizontal bends, horizontal tees, and crosses. Splice plates and threaded fasteners interconnect these selected cable tray sections to form the complete cable tray assembly.

Abstract: A shelter or seal structure for truck docks whereat the cargo body of a truck or trailer is loaded or unloaded. The doorway in a warehouse or the like, against which the end of the cargo body is backed is provided with an exterior perimetric compressible seal structure engageable with the back end of the cargo body along the top and opposite sides. The seal structure at the sides comprises in each instance an elongated upright compressible block formed, for example, of foam rubber or the like and affixed to the outside wall adjacent the doorway. The block has a base layer of plastic sheet secured to the outer-face and an outer strip of plastic sheet fastened to the base layer at spaced locations along horizontal seams to define bulges between the seams.