specifications - FAACO - Federal Aviation Administration Contract ...

FTWIC-2235June 2009conductors shall be supported from and secured to the building exterior using one holestraps of copper or bronze at maximum intervals of three feet.E. Guards shall be provided for all down conductors. Guards shall extend at least six feetabove and one foot below grade level. Guards shall be metal or schedule 40 polyvinylchloride (PVC) pipe. Metal guards shall be bonded to the down conductor at both ends.Bonding jumpers shall be of the same size as the down conductor. PVC guards do notrequire bonding. Crimp type fittings shall not be used.F. Metallic bodies, on or below roof level, that are subject to induced charges from lightninginclude exhaust fans, metal cooling towers, HVAC units, ladders, railings, antennas, roofdrains, plumbing vents, metal coping, metal flashing, gutters, downspouts, small metalwall vents, door and window frames, metal balcony railings, and in general any isolatedmetallic body within six feet of an exposed lightning protection system element. Whenthese metallic bodies have a metal thickness of 3/16 inch or greater, they shall be bondedto the nearest main lightning protection system conductor with UL approved fittings andconductors meeting the requirements of NFPA 780. These bonding fittings shall providesurfaces of not less than three square inches. Provisions shall be made to preventcorrosive effects introduced by galvanic action of dissimilar metals at bonding points. Ifthe metal parts of these units are less than 3/16 inch thick, additional approved airterminals, conductors and fittings, providing a two way path to ground from the airterminals shall be installed.G. If metallic, the mast of roof mounted antennas shall be bonded to the nearest roof ordown conductor using UL approved fittings and conductors. The bonding jumpers shallbe of the same size and material as the roof or down conductors to which they areconnected.3.02 FIELD QUALITY CONTROL:A. The Contractor shall establish and maintain quality control for the "Lightning ProtectionSystem" installation to assure compliance with contract requirements, and shall maintainrecords of his quality control for all construction operations. A copy of these records andcontractor tests, as well as the records of corrective action taken, shall be furnished to theGovernment as directed by the COR. Contractor shall obtain an Underwriters'Laboratories Master Label for the facility.B. Testing of Continuity of all Conductors - A copy of these records and tests, as well as therecords of corrective action taken, shall be furnished to the Contracting Officer'sRepresentative.END OF SECTION16670-4