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. 507
concrete members which form parts of any water retaining
structure shall not be permitted for the purpose of securing and
aligning the form work. The form work shall be so arranged as
to permit easy erection initially and later easy removal without
jarring or disturbing the concrete wedges and clamps shall be
used wherever practicable instead of nails.
Where the depth of form work exceeds 1.5 metres, the
contractors shall keep one side partly open, from which the
concrete could be placed and the planking on the open side
could be raised as the work proceeds. This will avoid
segregation of material in concrete and also facilitate its proper
vibration.
Before concrete is placed, all rubbish shall be removed from the
interior of the forms and surface of the forms work in contact with
the concrete shall be cleaned and thoroughly wetted. The inside
surface of the form work shall be treated with a coat of line, oil or
any other material approved by the Engineer. Care shall be
taken to see that the above approved composition is kept out of
contact with the reinforcement. The slab centering shall be
covered with double war water proofing paper or tar paper or
polythene sheet as directed by the Engineer.
c) Waterproof Paper
Waterproof building paper shall comply with B.S. 1521, 1949 for
road works, it shall be of class ‘B’.
Where no special finish is desired such as slabs, columns in the
reservoir etc. and where form finish is acceptable, the form work
may be prepared out of ‘Anchor’ brand plywood for similar