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® WorleyParsons <br /> resources&energy <br /> Concrete reinforcing will be deformed bars of intermediate grade, billet steel conforming <br /> to ASTM A 615, Grade 60. Welded wire fabric will conform to ASTM A 185. <br /> 2.3.14 Concrete Finishing <br /> Permanently exposed vertical concrete surfaces will receive a "smooth form finish" <br /> meaning that all tie holes and surface defects will be patched and all fins exceeding 1/8" <br /> will be removed. <br /> Horizontal surfaces will be finished as required by the service area, e.g. some horizontal <br /> surfaces will be bull floated, others will be floated and then roughened to provide for a <br /> non-slip surface. <br /> Concrete surfaces, both vertical and horizontal, that are to receive a protective coating (i.e. <br /> containment areas, and chemical treatment areas) will be finished in accordance with the <br /> applicable coating manufacturers recommendation. <br /> 2.4 Enclosures <br /> 2.4.1 General <br /> Construction materials used in enclosures will meet the definition of noncombustible or <br /> limited combustible, except roof coverings which should be Class A in accordance with <br /> NFPA 256, Standard Methods of Fire Tests of Roof Coverings. Metal roof deck <br /> construction, where used, should be "Class 1" or"fire classified." Particular attention will <br /> be focused on sloping floors and adding drains around equipment to preclude any pooling <br /> of water. <br /> Enclosure loads will take into consideration added dead load for items including but not <br /> limited to cable trays,pipe, and other items hung from the structure. <br /> Two-hour fire barriers will be provided for the following enclosures: <br /> • Power Distribution Centers (PDC) <br /> • Fire Pump Enclosure (if supplied) <br /> • Other as required by Code or local fire authority. <br /> 2.4.2 Power Distribution Centers (PDCs) <br /> The electrical switchgear, MCCs, DCS remote I/O panels, metering, protective relaying, <br /> batteries and other miscellaneous equipment will be housed in single-story, insulated <br /> Power Distribution Centers (PDC). PDCs will be factory assembled. PDCs will have a <br /> controlled environment, both heated and cooled. There will be minimum of(2) separate <br /> entries into each PDC. Consideration will be given in the PDC layout and construction to <br /> facilitate equipment maintenance and replacement <br /> Lodi Energy Center 3.2- 10 LEC AFC <br /> 071608 Rev.A <br />