particular specifications (road works) - CIDCO Maharashtra Ltd.

CIDCO OF MAHARASHTRA LTD
C.A.No.01/CIDCO/SE(KHR)/EE(KHR-I)/2010–11 Pg. No. 287
Compaction of 40 mm size metal:
The surface of 40mm metal layer after brought to necessary grades
sections shall be rolled with the use of vibratory roller. Rolling shall
commence from the edges and progress towards the center
longitudinally except super elevated portion it shall progress from the
lower to upper edge parallel to the centre line of pavement. When the
roller has passed over the whole area as prepared once, any high
spots or depressions which become apparent shall be corrected by
removing or adding aggregates. The rolling shall then continued till the
entire surface has been rolled to desired compaction such that there is
no crushing of aggregates and all roller marks have been eliminated.
The each pass of roller shall uniformly overlap not less than one third
of the track made in the preceding pass.
9.6.2 Spreading of 20 mm size metal :
20mm size crushed metal shall be spread evenly at the rate of 1.5 Cum
per 100 sq.mt. of area over the 40mm size hand broken metal.
9.6.3 Compaction after spreading of 20 mm size metal :
The surface of 20 mm metal layer after brought to necessary grades
and sections shall be rolled with the use of 8 to 10 vibratory roller.
Rolling shall be commence from the edges and progress towards the
centre longitudinally except on super edge parallel to the centre line of
pavement. When the roller has passed over the whole area as
prepared once, any high spots or depressions which become apparent
shall be corrected by removing or adding aggregates. The rolling shall
then continued till the entire surface has been rolled to desired
compaction such that there is no crushing of aggregates and all roller
marks have been eliminated. The each pass of roller shall uniformly
overlap not less than one third of the track made in the preceding pass.