specifications - FAACO - Federal Aviation Administration Contract ...

FTWIC-2235June 2009L. Do not support conduits and raceways from piping, ductwork, mechanical equipment,conduit, or from equipment they serve.M. Provide vibration dampers to minimize transmission of vibrations and noises, whererequired.N. Provide angle and channel supports to the floor and structure for panelboards, cabinets,pull boxes, and junction boxes with independent support from entering conduits andraceways.O. Provide supports as specified for conduits and raceways for outlet boxes and pull boxes100 cubic inches and smaller.P. Paint all cuts, breaks, welds and other points where the rust inhibiting coating of supportsis damaged.Q. Anchor supporting devices with:1. Wood screws on wood.2. Toggle bolts on hollow masonry.3. Bolts and expansion anchors in concrete or brick.4. Machine screws, threaded rods and clamps on steel.5. 4" x 4" redwood or penta-treated pine installed in pitch pans filled with hot pitchat 5'0" inch intervals on roof.R. Do not use powder-actuated anchors.S. Do not drill structural steel members.T. Fabricate supports from structural steel or steel channel, rigidly welded or bolted topresent a neat appearance. Use hexagon head bolts with spring lock washers under allnuts.U. In wet locations install free-standing electrical equipment on concrete pads.V. Install surface mounted cabinets and panelboards with a minimum of four anchors.Provide steel channel supports to stand cabinet one inch off wall.W. Bridge studs top and bottom with channels to support flush mounted cabinets andpanelboards in stud walls.END OF SECTION16190-3