High strength cellular metal floor raceway system

Claim 1

A cellular flooring system for carrying electrical conductors and the like supported at least in part by spaced-apart longitudinally extending I-beams of the type having a horizontal upper flange, a horizontal lower flange and a vertical web connecting said upper and lower flanges comprising: (a) plural spaced-apart horizontally disposed upper corrugated deck means, each having at least one deck conduit therein extending transversely with respect to the spaced-apart beams, each upper deck means supported fully above the beams at least in part by the upper flanges of the beams and each upper deck means having an upper surface positioned in a common horizontal plane; (b) horizontally disposed lower corrugated deck means having at least one deck conduit therein extending transversely with respect to the beams, said lower deck means having an upper surface and having opposite ends thereof positioned beneath opposed end portions of the upper deck means, said lower deck means positioned entirely between the beams whereby the conduit of the lower deck means extends substantially parallel to and beneath at least one end portion of the upper deck conduits and spans the distance therebetween; (c) support means for supporting the lower deck means between the beams; (d) access means between the deck conduits of the upper and lower deck means; (e) horizontally disposed feeder means having at least one longitudinally extending feeder conduit therein extending substantially parallel to said beams and having an upper surface, said feeder means positioned entirely above and supported by the upper surface of the lower deck means whereby the upper surface of the feeder means is substantially coplanar with the upper surface of the upper deck means; and (f) access means between the conduits of the lower deck means and the feeder means.