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d) Dewatering - Construction shall be accomplished in a dry <br />trench. Wellpointing will be required as necessary. Upon <br />completion of the construction, the wellpoint holes shall be <br />filled with grout. All water entering excavations or other <br />parts of the work shall be contained, collected and.pumped to <br />suitable places for disposal. <br />e) Sheeting - Sheeting and shoring shall be installed as may be <br />necessary for the protection of the work, preservation of <br />adjacent property and structures, and the safety of employees. <br />Sheeting and bracing shall uniform to OSHA requirements. <br />B. Installation of Water Mains - Installation must be in accordance <br />with latest AWWA Standard C600 irrespective of the type of pipe <br />selected. All installation procedures must also be in <br />conformance with pipe manufacturer's recommendations. Minimum <br />cover shall be 36" from the center line of the pipe. Magnetic <br />I.D. tape shall be placed in the trench over PVC pipe, 12" <br />below grade. Allowable deflection at the pipe joints and <br />curvature of PVC pipe shall not exceed the manufacture's <br />specifications. <br />a) Trench - Trench width shall be kept to a minimum necessary for <br />pipe installation. The trench bottom shall be graded and <br />alignment shall be parallel with the roadway where possible. <br />b) Backfill - Only good quality packfill, free of stones, roots, <br />rocks, broken cement, or other material which might be damaging <br />to the pipe shall be used. Backfill must be put in the trench <br />in lifts. <br />C) Compaction - All pipe must be compacted by hand tamping to the <br />center line, under the pipe. Backfill shall be compacted in <br />lifts up to the surface to achieve a minimum compaction of 950 <br />of maximum density in accordance with AASHO T-180 and ASTM <br />D-2167. <br />d) Thrust blocks - Concrete thrust blocks must be installed <br />against undisturbed soil at each bend, under valves and <br />hydrants, behind trees and hydrants at reducers, crosses, and <br />at the end of the line. Thrust blocks shall be designed to <br />resist forces created by 200 psi. <br />e) Dewatering - Construction shall be accomplished in a dry <br />trench. Wellpointing will be required as necessary. Upon the <br />completion of the construction, the wellpoint holes shall be <br />filled with gout. All water entering excavations or other <br />parts of the work shall be contained, collected and pumped to <br />suitable places for disposal. <br />f) Sheeting - Sheeting and shoring shall be installed as may be <br />necessary for the protection of the work, preservation of <br />adjacent property and structures and the safety of employees. <br />Sheeting and bracing shall uniform to OSHA requirements. <br />Utilities Director Terry Pinto explained that sometime in <br />the early 1980s, the County simply adopted the standards of the <br />City of Vero Beach, and these are no longer specific enough since <br />the County is doing much more construction now than the City. He <br />recommended that the Board adopt by resolution the utility <br />standards as set out above. <br />43 BOOK 69 PAGE 753 <br />T 0.197 <br />