SECTION 4 EARTHWORK FOR UTILITIES 4-01. GENERAL REQUIREMENTS: a. This division of the work includes furnishing all labor, materials, and equipment required to complete trench and related work outside of structures, as required for the installation of all pipe, conduit and other earth embedded utility lines as shown and as specified elsewhere in these specifications. b. All work shall be coordinated with that of the mechanical craftsmen concerned to the end that all work is properly installed. Depth and breadth of excavations and slope and contour of trench bottoms shall be as required for proper installation of the utilities as specified in other divisions of these specifications or otherwise required, and as herein specified. 4-02, WATER AND SHORING: Excavations shall be kept free of standing water andprotected as required to prevent surface water run-off into them. All shoring required to protect the work shall be provided and maintained in approved manner. 4-03. EXCAVATION: a. Excavations shall be of the open cut type. Banks shall be cut as nearly vertical as possible, Trench work shall not proceed until all compacted f111 is in place. b. Trenches to receive pipe, conduit, etc., shall be excavated true to line and accurately sloped to drain in accordance with the drawings and the requirements of the mechanical tradesmen concerned. Trenches shall be of sufficient width to provide a clear space of not less than 6 inches on either side of the pipe, and except as otherwise directed, shall have a minimum width at the bottom of 18 inches. Where sheathing is required, the trench widths shall be increased correspondingly. ec. Trench bottoms shall be dished out as required for bedding bell and spigot and flanged pipe work to the end that pipe rests for its entire length upon the bottom of the trench. The bottoms of all trenches for sanitary Sewers shall be rounded so that at least one-third of 4-1