Laserfiche WebLink
3 . HANDLING MATERIALS <br /> A . Pipe, fittings , and accessories shall be loaded and unloaded by hand or <br /> skidding so as to avoid shock or damage . Under no circumstances shall such <br /> materials be dropped . Pipe handled on skidways shall not be skidded or rolled <br /> against pipe already on the ground. <br /> Be In distributing the material at the site of the work, each piece shall be <br /> unloaded opposite or near the place where it is to be laid in the trench. <br /> 4 . ALIGNMENT, GRADE, AND COVER FOR BURIED PIPING SYSTEMS <br /> A. Pipe shall be laid and maintained to the required lines, depths , and grades . <br /> Be Wherever obstructions not indicated on the Drawings are encountered during the <br /> progress of the work and interfere to such an extent that an alteration in the <br /> Drawings is required, the Engineer will order a deviation from the line and grade <br /> or arrange with the owners of the structures for the removal , relocation, or <br /> reconstruction of the obstructions . <br /> C . The maximum permissible deflection for pipe and fittings shall be as <br /> recommended by the manufacturer. <br /> D. Installation of drainage pipe less than 18 " diameter in runs of 100 feet or <br /> greater, or as required by the Engineer, shall be controlled by use of a laser to <br /> maintain proper grade . The Contractor shall also be responsible for verifying <br /> elevations of the pipe , as indicated on the Drawings, at sufficient points during <br /> progress of the work to identify discrepancies between actual and plan <br /> elevations due to laser misalignment, equipment error, etc . , and to correct the work <br /> as required to conform to the Drawings . <br /> 5 . PIPE TRENCH EXCAVATION <br /> A. TRENCH DIMENSIONS <br /> 1 . The minimum width of the trench shall be equal to the outside <br /> diameter of the pipe at the joint plus 8 inches for unsheeted trenches , or 12 <br /> inches for sheeted trench, and the maximum width of trench, measured at <br /> the top of the pipe, shall not exceed the nominal pipe diameter plus two <br /> feet, unless otherwise shown on the Drawing details or approved by the <br /> Engineer. Trench walls shall be vertical from the bottom of the trench to a <br /> line measured one foot above the top of the pipe. From one foot above the <br /> top of the pipe to the surface, the trench walls shall be as nearly vertical <br /> as soil conditions will permit, unless otherwise detailed on the Drawings . <br /> Spaces for joints, fittings, manholes and other structures shall be <br /> maintained unless otherwise approved by the Engineer, or alternate <br /> methods are detailed on the Drawings . Should the specified maximum <br /> width of trench be exceeded , the pipe shall be adequately reinforced as <br /> directed by the Engineer, at the Contractor's expense . <br /> C : \ Down1oad \ techspec - 02403 . doc 02403 - 2 <br />