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1. Compact to 95 percent maximum density in layers not to exceed 4 inches up <br />to the centerline of the pipe from the trench bottom and in layers not to <br />exceed 6 inches from the pipe centerline to 12 inches above the pipe. <br /> <br />E. The filling shall be carried up evenly on both sides with at least one man <br />tamping for each man shoveling material into the trench. <br /> <br />F. The remainder of the trench above the compacted backfill, as just described <br />above, shall be filled and thoroughly compacted with common fill by rolling, <br />ramming, or puddling, as the ENGINEER may direct. Compact common fill in <br />12-inch layers to 95 percent maximum density. <br /> <br />G. The bedding rock in muck areas shall consist of the at least 10 inches of <br />washed and grade limerock placed in the trench to the proposed elevation of <br />the centerline of the pipe prior to pipe laying. <br /> <br />1.This bedding shall not be used as a drain for ground water. <br /> <br />2. Take precautions necessary to maintain the bedding in a compacted state <br />and to prevent washing, erosion or loosening of this bed. <br /> <br />H. In locations where pipes pass through building walls, take the following <br />precautions to consolidate the refill up to an elevation of at least 1 foot above <br />the bottom of the pipes: <br /> <br />1. Place structural fill in these areas for a distance of not less than 3 feet either <br />side of the centerline of the pipe in level layers not exceeding 6-inches in <br />depth. <br /> <br />2. Wet each layer to the extent directed and thoroughly compact each layer <br />with a power tamper. <br /> <br />3.05 GRADING <br /> <br />A. Grading shall be performed at these places as are indicated in the Drawings, to <br />the lines, grades and elevations shown or as directed by the ENGINEER and <br />shall be made in a manner that the requirements for formation of embankments <br />can be followed. <br /> <br />1. Unacceptable material encountered, of whatever nature within the limits <br />indicated, shall be removed and disposed of as directed. <br /> <br />2. During the process of excavation, the grade shall be maintained in a well <br />drained condition. <br /> <br /> <br />City of Sunny Isles Beach <br />NE 174th Street Roadway Improvements <br />02319 - 7 Trenching <br />14-1758 / 09-19-2014 <br />