GENERAL AND PARTICULAR SPECIFICATIONS OF ... - UNDP

4- Special care shall be taken to obtain full
compaction in the vicinity of both
longitudinal and transverse.
5- The surface of any layer of material shall be
on completion of compaction be well closed,
free from movement under compaction plant and
from compaction planes, ridges, cracks or
loose material. All loose, segregated or
otherwise defective areas shall be made good
to the full thickness of layer and recompacted.
6- Compaction shall be carried out by the method
specified in the table page ().
B) Granular sub-base and Road Material:
1- It shall comprise natural sands, gravels,
crushed rock. The material shall be well
graded and lie within the following grading
limits:
B.S. Sieve Size
passing
Percentage by weight
3 in 100
1 1/2 in 85 - 100
3/8 in 45 - 100
3/16 in 25 - 85
No. 25 8 - 45
No. 200 0 - 10
The particle size shall be determined in
accordance with B.C. 1377.
2- The material passing no. 36B.S. sieve, when
tested in accordance with B.S. 1377 shall
have a plasticity index of less than 6.
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SPECIFICATIONS
EXCAVATIONS
3- The material shall be laid and compacted to
the requirements of specifications at a
moisture content within the range one percent
above to 2 percent below the optimum
percentage determined in accordance with
vibrating hammer method test in B.S. 1377
4- On completion of roadbase and until any
surfacing is laid on it, the finished surface
shall be maintained free from potholes, ruts
and undulations, irregularities depressions,
loose material or other defects.