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. 313
15.3 Mode of measurement and payment-
The contract rate shall be for a unit of one cubic metre of concrete.
The concrete shall be measured for its length, breadth and depth
limiting dimensions to those specified on the drawings or as ordered by
the Engineer. No deduction shall be made for reinforcing steel bars
and anchor bars. No deduction shall be made for embedded structural
steel, if there combined sectional area is less than 500 sq.cm. Holes for
anchor shall not be deducted nor payment made for grouting these
holes. The sizes of R.C.C. members assumed in the estimate or
preliminary drawings are likely to be changed. The contractor shall not
be entitled to extra claims due to such changes.
15.4 READY – MIXED CONCRETE :
Ready Mixed concrete may be manufactured in a central automatic
weigh Batching plant and transporting to the job in agitating transit
mixers.
The maximum size of coarse aggregate shall be limited to one third of
the smallest inside diameter of the hose or pipe used for pumping.
Provision shall be made for elimination over-sized particle by screening
or by careful selection of aggregates. To obtain proper gradation it
may be necessary to combine and blend certain fractional sizes of
aggregates. Uniformity of gradation throughout the entire job shall be
maintained.
The quantity of coarse aggregate shall be such that the concrete can be
pumped, compacted and finished without difficulty.