A4A_GSP_WFO_Roof_and_HVAC_Replacement_Statement_of_Work_Attachment_4A.pdf

This document is a General Installation Notes specification for a Lightning Protection System prepared by Daniel Inc. on July 13, 1994, with subsequent approval documentation dated April 17, 1995 from Fluor Daniel Inc. and Norungold Davis Inc.

The specification outlines comprehensive requirements for installing a complete lightning protection system to protect buildings against lightning damage. The installation must comply with UL96A and NFPA 780 codes and standards. Key technical requirements include: locating air terminals (points and bases) within 2 feet of outside building edges with maximum 20-foot spacing between terminals and minimum 10 inches above the roof or parapet wall; protecting HVAC units, fans, vent stacks, and rooftop equipment with air terminals and interconnecting cables bonded to the main system; maintaining horizontal or downward coursing of main conductor cables with gradual bends of at least 8-inch radius and minimum 90-degree angles; supporting all exposed and concealed roof conductors and bonding cables at intervals not exceeding 3 feet using like-material fasteners; bonding metal bodies of inductance within 6 feet of main conductors using secondary bonding conductors and approved clamps per UL and NFPA codes; using building structural steel as downlead conductors with exothermic welds at all connections; installing ground terminals around the building perimeter spaced 100 feet apart and minimum 1 foot below grade, penetrating at least 10 feet into earth with deeper installations required for sandy or poor grounding conditions; installing counterpoise conductors at least 2 feet below grade connected to ground terminals; bonding metal water service and other metallic piping systems near building entries; and interconnecting one ground terminal to the electric service ground, telephone service ground, and other building ground systems per applicable codes and standards. The document includes detailed product specification tables, connection diagrams, and illustrations from Erico Products Inc. (Cadweld) and component catalogs for various lightning protection connection types and materials.