We produce precast concrete manhole covers using superior quality raw material confirming to ISI as per BIS.
1. Cement: OPC 43 Grade Cement is used for the manufacture of precast RCC manhole covers and frame confirming to IS 269.
Preferred Brand: Shree Cement
2. Aggregate: The nominal maximum size of course aggregate we use do not exceed 20 mm and is well graded. Aggregates are clean and free from deleterious material and confirm to the requirement of IS 383.
3. Reinforcement: At BRHC, We use MS Bars, Rods and Flat which are clean and free from loose mill scale, loose rust, mud, oil, grease or any other
coating which may destroy the bond between
concrete and steel. It is confirmed to IS 432.
4. Steel Fibers: The diameter of steel fibers
we use is not be greater than 0.75 mm. The minimum volume of fibers is
0.5 percent of the volume of concrete.
5. Admixtures: We use admixture conforming to IS 9103.
6. Water: The water used is free from matter harmful to concrete or reinforcement or matter likely to cause efflorescence in the units and conform to the requirements of IS 456.
7. Concrete Mix Grade: M30

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