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_ __ _. -� .,y:.a�. ;_. ..�__. <br /> :-........ _.-.�, <br /> ' <br /> ' <br /> ' , <br /> Satisfactory soil materials are defined as those complying with AST1�A D2487 soil <br /> � classification groups GW, GP, G1rt, SM, SW and SP. <br /> Unsatisfactory soil materials are defined as those complying with ASTM D2487 soil <br /> classification groups GC, SC, ML, MH, CL, CH, OL, OH and PT. <br /> ' � Subbase Material: l0096 class 5 crushed aggregate. <br /> ' Drainaqe Fill: Washed, evenly graded mixture of crushed stone, or crushed or uncrushed <br /> gravel, with 10096 passing a 1-112" sieve and not more than 596 passing a No. 4 sieve. <br /> Backfill and Fill Materials: Satisfactory soil materials free of clay, rock or gravel larger <br /> ' than 2" in any dimension, debris, waste, frozen materials, vegetable and other <br /> deleterious matter. Granular fill shall contain no more tha� 1596 passing the No. 200 <br /> sieve such as Mn/DOT 3149 B or C. <br /> ' PART 3 - EXECUTION <br /> ' 3.01 EXCAVATION: <br /> Excavation is Unclassified, and includes excavation to subgrade elevations indicated, <br /> regardless of character of materials and obstructions encountered. <br /> ' Unauthorized excavation consists of removal of ma*Pr�a1c hevond indicated subgrade <br /> elevations or dimensions without specific direction of LA/E. Unauthorized <br /> ' excavation, as well as remedial work directed by LA/E, shall be at <br /> Contractor's expense. <br /> Under footings, foundation bases, or retaining walls, fill unauthoriaed excavation by <br /> ' extending indicated bottom elevation of footing or base to Excavation bottom; without <br /> altering required top elevation. Lean concrete fill may be used to bring elevations to <br /> proper position, when acceptable to.LA/E. <br /> ' Elsewhere, backfill and compact unauthorized excavations as specified for authoriaed <br /> excavations of same classification, unless otherwise directed by LA/E. <br /> ' Additiona! Excavation: When excavation has reached requiced subgrade elevations, <br /> notify Architect Engineer who will make an inspection of conditions. <br /> � If unsuitable bearing materials are encountered at required subgrade elevations, carry <br /> excavations deeper and replace excavated material as directed by Architect/Engineer. <br /> Stability of Excavations: Slope sides of excavations to comply with local codes and <br /> ' � ordinances having jurisdiction. Shore and brace where sloping is not possible because of <br /> space restrictions or stability of material excavated. <br /> ' <br /> ' EARTHWORK 02200 - 3 � <br /> � <br />