Abstract: The invention comprises an apparatus for suspending conduit from a solid support structure (e.g., a bridge) which includes a plurality of hanger elements arranged and configured for interconnection to form a horizontally or vertically extending array of cells. Each cell includes a size and shape adapted to support an individual conduit. Support rods extend from the solid support structure to support the hanger elements. The support rods may include a first end anchored into the solid support structure and a threaded second end adapted to retain threaded nuts and washers, or the like. In one embodiment, the invention comprises a J-shaped hanger element having an upright support leg with first and second ends and a conduit support bar extending laterally from the second end of the upright support leg. The conduit support bar includes a first end connected to the upright support member and a second end which may receive various attaching and connecting devices.

Abstract: A multiple duct conduit system (10) includes conduit sections with elongated outer ducts (18) and inner ducts (19) are disposed therewithin and the conduit sections are connected in end-to-end relationship for carrying fiber optic cables and the like. The inner ducts (19) are formed of a material having a coefficient of thermal expansion which is different from that of the outer ducts and the inner ducts expand and contract with respect to the outer ducts as temperatures change. Couplings (16) connect the ends of the conduit sections and define passageways (31-34) constructed with expansion chambers (48) to accommodate changes in the lengths of the inner ducts (19) with respect to the outer ducts (18).