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Settlement predictions of the soil's behavior under load are made on the basis of

consolidation tests (ASTM D 2435). A one inch high sample is loaded in a geometric

progression and the resulting deformation is recorded at selected time intervals. Porous

stones are placed in contact with the sample (top and bottom) to permit addition and

release of pore fluid. The sample is inundated at a selected load (typically near

overburden pressure) during the progression. Results are plotted on the enclosed

Consolidation-Pressure Curves.

Compaction and Expansion Tests

To determine the compaction characteristics of the onsite materials, compaction

tests are performed in accordance with ASTM D 1557. The maximum dry density is

reported in pounds per cubic foot and the optimum moisture content as a percentage of

the maximum dry density. Expansion index tests were performed in accordance with the

criteria in U.B.C. 18-2. The results of these tests are included in Laboratory Test Data

Table.

Table I - Laboratory Test Data

Maximum Optimum
Dry Moisture
Density Content Expansion
Sample Description PCF % Index
B2@11-15' Tan silty SAND (Saugus Fm.) 134 8 6
B3@5' Tan clayey silty SAND (Saugus Fm.) 127 9 0
B3@38' Lt. gray silty SAND w/ grave. (Mint Cyn.Fm.) 132 10 0
B9@15' Lt. brown sandy SILT 124 11 19
B10@20' Tan clayey med-cs SAND w/ gravel 137 7 4
B16@60' Dark red sandy CLAY (TQs) 56
B19@15' Tan silty f-cs SAND w/ gravel 128 10 10
B29@63’ Tan silty med.-coarse SAND (Saugus Fm.) 130 9
B39@0-5’ Dark brown silty clayey SAND w/ gravel 133 10 2
B50 @ 30’ Lt. gray silty SAND 130 10
B50 @ 67’ Lt. gray clayey silty SAND 126 12
B58 @ 80’ Tan fine-med. Grained SAND 131 9
B59 @ 25’ Tan silty SAND w/ gravel 129 9
B60 @ 28’ Light brown clayey SAND 126 12
B62 @ 5’ Light reddish brn. Clayey silty SAND
B77@15’ Tan silty SAND w/ gravel 128 10

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