Abstract: A conduit system for supporting and clamping a bank of conduits of different diameters in a substantially parallel and spaced apart relationship which requires a minimum number of parts and which can be assembled simply and rapidly. The basic structure is comprised of a plurality of vertically and horizontally interlocking modular units, each consisting of a frame member having at least one side thereof including an arcuate surface corresponding to the outside diameter of a first conduit. The conduit is supported on the arcuate surface of one frame member and clamped thereon by a second, superimposed, interlocking frame member. A unitary generally U-shaped adapter is employed to support a smaller diameter conduit within the system. One end of the adapter includes a snap-on clip to facilitate attachment to an arcuate surface of a frame member and the opposite end comprises a pair of opposed resilient arms for receiving and holding the smaller conduit in a fixed relationship to the arcuate surface.

Abstract: A system for anchoring the conduit spacers of a utility duct bank in a fixed position within a trench during encasement or burial of the duct bank. The conduit spacers comprise components having mating bosses by means of which they can be horizontally and vertically interlocked. A holder interfits with the horizontal or side attachment bosses and includes a vertical guide opening for receiving a length of steel reinforcing bar or other elongated member. The length of reinforcing bar is inserted through at least one, and preferably two or more aligned and driven into the earth forming the floor of the trench, and the top portion of the bar is secured as by being bent over the upper holder to prevent the duct bank from shifting or floating upwardly as when concrete is poured around it. The shape of the holders is such that a tapered notch is created between the conduit spacer and holder fitted thereto for receiving a horizontally extending reinforcing rod to provide added strength to the duct bank.