Attachment A - 2015-3-13_Samson Park Technical Specifications

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SAMSON OCEANFRONT PARK CITY OF SUNNY ISLES TECHNICAL SPECIFICATIONS GROUNDING AND BONDING 16060 - 4 3.3 COUNTERPOISE A. Ground the steel framework of the building with a driven ground rod at the base of every corner column and at intermediate exterior columns at distances not more than 60 feet apart. Provide a grounding conductor (counterpoise), electrically connected to each ground rod and to each steel column, extending around the perimeter of the building. Use tinned-copper conductor not less than No. 2/0 AWG for counterpoise and for tap to building steel. Bury counterpoise not less than 24 inches below grade and 24 inches from building foundation. 3.4 INSTALLATION A. Ground Rods: Install at least three rods spaced at least one-rod length from each other and located at least the same distance from other grounding electrodes. 1. Drive ground rods until tops are 6 inches below finished floor or final grade, unless otherwise indicated. 2. Interconnect ground rods with grounding electrode conductors. Use exothermic welds, except as otherwise indicated. Make connections without exposing steel or damaging copper coating. B. Grounding Conductors: Route along shortest and straightest paths possible, unless otherwise indicated. Avoid obstructing access or placing conductors where they may be subjected to strain, impact, or damage. C. Bonding Straps and Jumpers: Install so vibration by equipment mounted on vibration isolation hangers and supports is not transmitted to rigidly mounted equipment. Use exothermic-welded connectors for outdoor locations, unless a disconnect-type connection is required; then, use a bolted clamp. Bond straps directly to the basic structure taking care not to penetrate any adjacent parts. Install straps only in locations accessible for maintenance. D. Metal Water Service Pipe: Provide insulated copper grounding conductors, in conduit, from building's main service equipment, or grounding bus, to main metal water service entrances to building. Connect grounding conductors to main metal water service pipes by grounding clamp connectors. Where a dielectric main water fitting is installed, connect grounding conductor to street side of fitting. Bond metal grounding conductor conduit or sleeve to conductor at each end. E. Water Meter Piping: Use braided-type bonding jumpers to electrically bypass water meters where re- quired. Connect to pipe with grounding clamp connectors. F. Bond interior metal piping systems and metal air ducts to equipment grounding conductors of associated pumps, fans, blowers, electric heaters, and air cleaners. Use braided-type bonding straps. G. Bond each aboveground portion of gas and fuel oil piping systems upstream from equipment shutoff valve. H. Concrete-Encased Grounding Electrode: Fabricate according to NFPA 70, using a minimum of 20 feet of elec- trically conductive steel reinforcing bars at bottom of foundation and bond grounding electrode conductor to rein- forcing steel. 3.5 CONNECTIONS A. General: Make connections so galvanic action or electrolysis possibility is minimized. Select connectors, connection hardware, conductors, and connection methods so metals in direct contact will be galvanically compatible. 1. Use electroplated or hot-tin-coated materials to ensure high conductivity and to make contact points closer to order of galvanic series. 2. Make connections with clean, bare metal at points of contact. 3. Coat and seal connections having dissimilar metals with inert material to prevent future penetration of moisture to contact surfaces.