Volume-IF - JantERmantER

DCPL-K4A02
maximum dry density and optimum moisture content (OMC). These
reference values of dry density and moisture content shall be used to
compute the dry density ratio of each of the field density test samples taken
from that test lot.
The degree of compaction shall be determined by considering the mean
density of the samples in each test lot. The mean dry density shall be equal
to or exceed the minimum specified density. In no individual case shall
density be less than the minimum value specified by more than 2 percent,
otherwise further rolling shall be done at the appropriate locations.
The contractor shall lay a further layer or fill only after compaction or a
particular layer has been found and approved by the Engineer.
4.0.0 TESTING AND ACCEPTANCE CRITERIA
4.1.0 Soil Testing
The following tests shall be undertaken by the Contractor and results and
reports shall be submitted to the Engineer for approval. Test failures
are to be immediately notified to the Engineer, otherwise results to be
submitted within 24 hours of testing. Each layer of material shall be tested
for compaction.
Each layer is to be tested in a manner that is representative of its full
depth. The Engineer may at his discretion instruct the Contractor to
increase or decrease the frequency of testing.
a) Minimum one test per 500 cu.m. of soil coming out of the borrow
pits for determination of natural moisture contents in order to
evaluate how far the natural moisture content tallies with the
optimum value and whether further addition or reduction of water
content would be necessary. Test to be done in accordance with IS
: 2720 (Part-II).
b) Minimum two sets of laboratory tests per 8000 cu.m. of soil coming
out of the borrow pits for determination of dry density at optimum
moisture content. Test to be done in accordance with IS : 2720
(Part-VII, XIV, XXVIII, XXIV) as applicable.
c) Minimum two sets of test per 500 cu.m. of loose fill for
determination of moisture content just prior to compaction of area
filling. Test to be done in accordance with IS: 2720 (Part-II).
d) For each compacted layer, minimum one test per 2000 sq.m. of
compacted area for determination of moisture content and dry
density.
(PCA.774.S034sca) V.II-D2/S-I : 18