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. 372
The volume of concrete measured in cubic meter shall include that
occupied by :
1) Reinforcement and other metal sections.
2) Cast in components each less than 0.01 m3 in volume.
3) Rebates, fillets or internal splays each less than 0.005 m2 in
cross sectional areas.
4) Pockets and holes not exceeding 0.01 m3 in volume.
5) Rates for precast concrete shall include demoulding, handling,
storing, transporting and erecting at site, including all clamping,
bolting, bracing that may be required during erection, including
erection equipment.
5.24 READY-MIXED CONCRETE AND PUMPING CONCRETE :
The provision in this section apply to all Ready Mix Concrete and shall
be considered supplementary to general provisions for reinforced
concrete works. The test shall be carried out at RMC manufacturer’s
laboratory on all concrete ingredients as per the specifications.
However, if directed by Engineer, test will be carried out on random
sample at CIDCO approved laboratory by RMC manufacturer
/contractor.
5.24.1 Ready-mixed concrete may be manufactured in a central automatic
weight Batching plant and transported to the job in agitating transit
mixer.
The maximum size of coarse aggregate shall be limited to one-third of
the smallest inside diameter of the hose or pipes used for pumping.
Provision shall be made for elimination of over-sized particles by
screening or by careful selection of aggregates. To obtain proper
gradation it may be necessary to combine and blend certain fractional
sizes to aggregates. Uniformity of gradation throughout the entire job
shall be maintained.