Laserfiche WebLink
120-1.2.2 Earthwork Category 2: Includes the earthwork and related <br />operations associated with the construction of turn lanes and other non -mainline traffic <br />lanes, widening, roadway shoulders, concrete box culverts, retaining walls, and other <br />drainage structures on the non -mainline pavement. <br />120-1.2.3 Earthwork Category 3: Includes the earthwork and related <br />operations associated with the construction of new mainline pavement, along with concrete <br />box culverts, retaining walls, and other drainage structures on the mainline pavement. <br />120-2 Classes of Excavation. <br />120-2.1 Excavation of Unsuitable Material: Excavation of unsuitable material <br />consists of the removal of muck, clay, rock or any other material that is unsuitable in its <br />original position and that is excavated below the finished grading template. For stabilized <br />bases and sand bituminous road mixes, the finished grading template is the top of the <br />finished base, shoulders and slopes. For all other bases and rigid pavement, the finished <br />grading template is the finished shoulder and slope lines and bottom of completed base or <br />rigid pavement. <br />120-2.2 Lateral Ditch Excavation: Lateral ditch excavation consists of all <br />excavation of inlet and outlet ditches to structures and roadway, changes in channels of <br />streams, and ditches parallel to the roadway right-of-way. Dress lateral ditches to the grade <br />and cross-section shown in the plans. <br />120-2.3 Channel Excavation: Channel excavation consists of the excavation and <br />satisfactory disposal of all materials from the limits of the channel as shown in the plans. <br />120-2.4 Excavation for Structures and Pipe: Excavation for structures consists of <br />the excavation for bridge foundations, box culverts, pipe culverts, storm sewers and all <br />other pipe lines, retaining walls, headwalls for pipe culverts and drains, catch basins, drop <br />inlets, manholes, and similar structures. <br />120-3 Excavation Requirements. <br />120-3.1 Excavation and Replacement of Unsuitable Materials: Where rock, <br />muck, clay, or other material within the limits of the roadway is unsuitable in its original <br />position, excavate such material to the cross-sections shown in the plans or indicated by <br />the Engineer, and backfill with suitable material. Shape backfill materials to the required <br />cross-sections. Where the removal of plastic soils below the finished earthwork grade is <br />required, meet a construction tolerance of plus or minus 0.2 foot in depth and plus or minus <br />6 inches (each side) in width. <br />120-3.2 Lateral Ditch Excavation: Excavate inlet and outlet ditches to structures <br />and roadway, changes in channels of streams and ditches parallel to the roadway. Dress <br />lateral ditches to the grade and cross-section shown in the plans. <br />120-3.3 Channel Excavation: Excavate and dispose of all materials from the limits <br />of the channel as shown in the plans. Excavate for bridge foundations, box culverts, pipe <br />culverts, storm sewers and all other pipe lines, retaining walls, headwalls for pipe culverts <br />and drains, catch basins, drop inlets, manholes, and similar structures. <br />120-3.4 Excavation for Structures and Pipe. <br />120-3.4.1 Requirements for all Excavation: Excavate foundation pits to <br />permit the placing of the full widths and lengths of footings shown in the plans, with full <br />horizontal beds. Do not round or undercut corners or edges of footings. Perform all <br />excavation to foundation materials, satisfactory to the Engineer, regardless of the elevation <br />shown on the plans. Perform all excavation in stream beds to a depth at least 4 feet below <br />the permanent bed of the stream, unless a firm footing can be established on solid rock <br />01025-16 Technical Specifications <br />F:\Public Works\ENGINEERING DIVISION PROJECTS\1503-43rd Ave Swk_Airport Dr to 41st St\1-Admin\Bids\Bid <br />Documents\Master Contract Documents\Technical Specifications.doc <br />