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Kvaerner Metes <br />• Project No. 306900 <br />General Specification No. GC-01 <br />Site Work <br />compacted to 90 percent maximum density, at or slightly above the optimum <br />moisture content, as determined by ASTM D 1557. <br />Compaction shall be done with heavy rubber-tired rollers, sheepsfoot rollers or as <br />approved by the Engineer. Places inaccessible to rollers shall be compacted with <br />mechanical or hand tampers. <br />Each layer shall be free of ruts and shall meet compaction requirements before <br />each succeeding layer is placed. Layers shall be maintained with a crown ar <br />slope to provide drainage and prevent erosion. <br />A minimum of one field density test shall be performed, in accordance with ASTM <br />D 2922 for each layer or 300 cubic yards of compacted material, whichever is <br />smaller. Additional tests may be required. when approved by the Engineer. All <br />tests shall be performed by an independent testing agency. <br />5.3 Structural Fills <br />Where buildings or facilities are to be constructed, fill matenal shall consist of <br />free-draining, well graded granular and non-expansive sods having a maximum <br />particle size of 4 inches and a maximum percentage of fines (minus #200 sieve) <br />of 20 percent by weight. The fill material shall have a liquid limit of less than 25 <br />and a plasticity index of less than 10. <br />Filf material shall be placed in uniform lifts not exceeding 8 inches in loose <br />thickness and shall be compacted to 98 percent maximum density, at a moisture <br />content within 2% of optimum moisture content, as determined by ASTM <br />D 1557. <br />Field density tests shall be performed as indicated in Section 5.2. <br />The limit for structural fills shall not be less than 10 ft. beyond the footprints of <br />faulities. <br />6.0 <br />STRUCTURAL EARTHWORK <br />Foundations and footings shall be established upon swtable undisturbed sod or upon <br />compacted structural fill as shown on the drawings or as directed by the Engineer. <br />Placement and compaction of structural fill shall be as speufied m Section 5.3. <br />6.1 Structural Excavation <br />All excavation shall be made to the depth called for on the drawings. Bottom of- <br />excavation shall be clean and clear of loose matenal. <br />If excavations to the depth indicated on the drawings terminate in material which <br />is not swtable for foundation support, the Engineer shall be informed and shall <br />direct the corrective action requred. <br />~ ~wewwwveasrnucncu+svc ooc. a« Mi 6 +~w o'r. sr. +aw <br />