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1 <br />1 <br />i1 <br />E. Backfill and Fill Materials: Satisfactory soil materials free of clay, rock or gravel larger <br />than 2 in. in any dimension, debris, waste, frozen materials, vegetable and other <br />deleterious matter. <br />PART 3 - EXECUTION <br />3.01 EXCAVATION <br />06/05 <br />A. Excavation is Unclassified, and includes excavation to subgrade elevations indicated, <br />regardless of character of materials and obstructions encountered. <br />B. Unauthorized Excavation: Removal of materials beyond indicated subgrade elevations or <br />dimensions without specific direction. Unauthorized excavation, as well as remedial work <br />directed by Engineer, shall be at Contractor's expense. <br />C. Additional Excavation: <br />1. When unsuitable bearing materials are encountered at required subgrade <br />elevations, carry excavations deeper and replace excavated material as directed by <br />Engineer. <br />2. Removal of unsuitable material and its replacement as directed will be paid on <br />basis of contract conditions relative to changes in work. <br />D. Stability of Excavations: <br />1. Slope sides of excavations to comply with local codes and ordinances having <br />jurisdiction. <br />2. Shore and brace where sloping is not possible because of space restrictions or <br />stability of material excavated. <br />3. Maintain sides and slopes of excavations in safe condition until completion of <br />backfilling. <br />E. Shoring and Bracing: <br />1. Establish requirements for trench shoring and bracing to comply with local codes <br />and authorities having jurisdiction. <br />2. Maintain shoring and bracing in excavations regardless of time period excavations <br />will be open. Carry down shoring and bracing as excavation progresses. <br />F. Dewatering: <br />1. Prevent surface water and subsurface or groundwater from flowing into <br />excavations. <br />2. Do not allow water to accumulate in excavations. <br />02200 -2 <br />03- 4138.13 <br />