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<br />High Rock Road Waste & Recycling Center Improvements 33 30 00 - 15 <br />Orange County Solid Waste MARCH 2019 <br />DAA PN R00592-213N <br /> <br />compacted and so shaped as to give the pipes uniform bearing throughout <br />their lengths at the established grade. Bell holes shall be dug to relieve <br />the bells of load and to provide for completing the joints. <br /> <br />F. Where the material at grade is unstable, soft, and incapable of supporting <br />the pipe, the trench shall be excavated below grade, as directed by the <br />Engineer, and refilled to grade with crushed stone or gravel to form a <br />foundation for the pipe. <br /> <br />G. When authorized by the Engineer, the Contractor shall dispose of material <br />excavated from the trench that is unsuitable for backfill material. The <br />Contractor shall provide the place select borrow material to replace <br />unsuitable material for backfilling the trench as directed. <br /> <br />H. Stone shall be compacted and graded to provide stable foundation and a <br />uniform bearing for the pipe. Bell holes shall be provided as in other types <br />of foundations. <br /> <br />I. Should ground water be encountered in the bottom of the trench, causing <br />the trench bottom to be unstable, the material, as directed by the <br />Engineer, shall be excavated below grade sufficiently to allow a bed of <br />crushed rock or gravel to be place in which to bed the pipe. The work <br />shall be done as for unstable foundations. The depth of cut below grade <br />shall be only the minimum amount to accomplish the purpose, and shall <br />be as directed by the Engineer. <br /> <br />J. The Contractor shall furnish all machinery for pumping, bailing, and/or well <br />pointing and shall pump, bail, or otherwise remove any water which may <br />be found or shall accumulate in the trenches, and shall perform all work <br />necessary to keep them clear of water while the pipe is being laid. The <br />disposal of water after removal shall be satisfactory to the Engineer. <br /> <br />K. Whenever necessary, the side of the trench shall be braced and rendered <br />secure and either open or close sheathing used to the satisfaction of the <br />Engineer; such sheathing and bracing to be left in place until the trench is <br />refilled to a safe limit, not less than 2' above the top of the pipe. The t op <br />portion may be then cut off, but the lower portion shall remain undisturbed. <br /> In lieu of sheeting, suitable trench boxes may be employed. All sheeting, <br />bracing, trench boxes, and trench construction methods shall conform to <br />the latest Department of Labor Safety and Health Regulations for <br />construction promulgated under the Occupational Safety and Health Act of <br />1970. No extra payment will be made for sheeting and bracing. Such cost <br />shall be included in the cost of installing the pipe. <br /> <br />L. All existing water, sewer, and gas lines, buried electrical and telephone <br />cable, and other known utilities intersecting the lines of construction, if <br />requested by the Engineer, shall be uncovered by the Contractor at his <br />DocuSign Envelope ID: BBF56E0A-3618-497E-AA70-92F097E8F598