TranSystems Corporation - LGM Construction

TABLE 2
SUMMARY OF COMPACTION RECOMMENDATIONS
Area Compaction Recommendation (1),(2),(3),(4),(5)
General Engineered Fill Compact to at least 90 percent compaction at
above optimum moisture content for native
clayey and silty soils and at near optimum
moisture content for imported granular soils.
Imported Fill Compact to at least 90 percent compaction at
near or above optimum moisture content.
Trenches (6) Compact to at least 90 percent compaction at
above optimum moisture content for native
clayey or silty soils and at near optimum moisture
content for imported granular soils.
Concrete Floor Slabs Compact upper 12 inches of subgrade to a
minimum of 90 percent at above optimum
moisture content in clayey or silty soils
Exterior Flatwork Compact upper 12 inches of subgrade to a
minimum of 90 percent at above optimum
moisture content in clayey or silty soils or upper
12 inches of subgrade to a minimum of 90
percent at near optimum for sandy or gravelly
soils.
Parking and Access Driveways Compact upper 8 inches of subgrade to a
minimum of 90 percent compaction at above
optimum moisture content. Compact baserock to
a minimum of 95 percent compaction near
optimum moisture content.
Notes:
(1) All compaction requirements refer to relative compaction as a percentage of the
laboratory standard described by ASTM D1557.
(2) Depths are below finished subgrade elevation.
(3) Fill material should be compacted in lifts not exceeding 8 inches in loose thickness.
(4) All subgrades should be firm and unyielding.
(5) Fills greater than 7 feet in depth should be compacted to a minimum of 95 percent below 7
feet.
(6) In landscaping areas only, percent compaction in trenches may be reduced to 85
percent.
94240/1(OAK8R061)/es Page 29 of 29 June 13, 2008
© 2008 Kleinfelder