All correspondence must be made through the Vendor Portal. Specifications include, but are not limited to: Base Shall be sized and arranged for proper strength and durability to be able to withstand the resulting stresses when lifting and moving the completed assembly. Shall be designed for installation on either concrete pier foundations or perimeter beam. Shall have removable lifting/jacking devices to facilitate handling and installation. Normal lifting will be by crane. Shall have two grounding pads, connected internally by bare 4/0 copper, located at opposite ends of the building. Shall be insulated to not less than R-30 with a fire-resistant insulation. For a metal enclosure the steel base shall be all welded construction and the exterior shall be smooth, clean, and coated with corrosion resistant black mastic for protection against the environments. Floor Shall have a floor of 7 Gauge minimum steel plate. The floor shall be designed to support the applicable dead load plus a concentrated live load of 1000 lbs. or a uniform live load of 250 lbs. per square. The floor shall be finished with skid resistant paint in all aisle areas. Finished floor to be covered with 1/8” Masonite hardboard, or similar, for protection during moving, installation, and testing. LES to remove when installation is complete. Building Construction Walls Interior walls to have a minimum height of 120 inches. Shall be insulated to a minimum of R-20 with a fire-resistant insulation. Steel walls, interior and exterior, shall be manufactured from minimum 12-gauge, paint quality, galvannealed steel, and be fully assembled at the factory on the structural base. Galvannealed is not required if using a powder coat paint system. See “Finish”, Part D, Section f. Roof and Ceiling The roof will be subject to maintenance workers. Therefore, in addition to all code required loads, the roof shall be designed for a concentrated load of 300 pounds. A steel roof shall be of standing seam construction and have a minimum slope of 1 inch per foot. The ceiling shall be manufactured from minimum 16-gauge, paint quality galvannealed steel. Galvannealed steel is not required if using a powder coat paint system. See “Finish”, Part D, Section f. The ceiling shall have a smooth surface and shall be insulated to a minimum of R-38 with a fire-resistant insulation. Any open attic space above the insulation shall be ventilated to prevent condensation. Doors Two personnel doors, 42” x 7’-0” with weather stripping shall be provided, doors to be located per the attached drawings. The doors shall be insulated, double 14-gauge, steel construction with gutter style drip edges over each door. The doors shall include locks, automatic door closers, brush door sweeps, and magnetic closed-circuit door switches to signal illegal entry. The door closers shall be top jam mounted, Non-handed (reversible), Hold-Open with Turn Knob. The door locks will be rekeyed by LES after building delivery. See BOM for manufacturer part numbers. Building Layout Building size shall be approximately 62’-4”’X22’ exterior. Two (2) battery areas with barrier walls ventilated at the top and bottom. Exterior exhaust/intake vents shall be provided. See Part I for associated plan view sketch. Finish The preferred finish is the baked on powder coat paint system which is an electrostatically applied polyester powder with a final baked on average finish of 2.0 mils. The finish shall pass the ASTM B117 salt spray test for a minimum of 200 hours. Coating test reports shall be available on request by the Purchaser. Other paint systems which may be considered include acrylic enamel, polyester, or epoxy coatings applied on properly prepared galvannealed steel. Interior walls shall be white with gloss finish and the exterior walls shall be ANSI 70 type light gray. All steel surfaces to be painted prior to assembly. Seismic Building to meet IEEE low seismic category. General The enclosure shall be completely assembled and wired at the Bidder’s manufacturing location for inspection and testing to assure overall accuracy of dimensions and operation. The enclosure shall be shipped completely assembled except for required shipping splits. Reassembly of the split sections at the site shall be the responsibility of the bidder. Means shall be provided for anchoring the enclosure to the foundation. A 120/208VAC single or three phase heat pump shall be provided for temperature and humidity control. The heat pump shall be sized by the Bidder to control the interior temperature between 50 and 90 degrees Fahrenheit. The heat pump(s) shall be either Carrier or Bryant and shall be installed, and factory warrantied by a certified installer. The installation shall include an automatic changeover thermostat, Low Ambient Kit, and Low Ambient Lockout Relay. HVAC duct system shall be installed to evenly distribute conditioned air throughout all building spaces. HVAC duct system shall maintain a 6” clearance above the top of the cable tray to ensure accessibility to the cable tray. A return air filter shall be provided on the return air duct in a bracket designed to permit easy replacement of the filter. See BOM for manufacturer part number. Install Lithonia Lighting products for interior, exterior, and emergency exit signs. See BOM for manufacturer part numbers. A 3-way light switch is to be located near each entry door. Lighting inside battery rooms may be on the same circuit and switch as the main floor lights. Provide a duplex, 120 volt receptacle adjacent to each light switch and additional receptacles along each wall. Provide smoke detectors with relay contacts for alarm provisions. See BOM for manufacturer part number. Provide the 12-gauge steel wall termination panel per the attached drawings in Part I. All termination and dummy mounting panels shall have a ¼” X 2” copper ground bus along the bottom approximately 10” off the floor. This ground bus shall be drilled, tapped, and have #10/32 button head screws installed in the holes as shown in the specification drawings. If not a part of the building ground bus in Part E, Section q, it shall be bonded to that bus with wire or additional bus. Provide entry for control cables as shown on the drawings in Part I. The cable entry port shall be high enough on the wall to allow the interior cable tray to run below it. The preferred height is less than 2” above the cable tray. The bottom and side edges of the cable entry port shall have rounded edges to prevent damage to the cables running through it. The bottom of the cable riser shall have a removable cover plate to allow for LES personnel to cut entry points as needed for cable installation.
