About this code
Code of practice for ordering, manufacture, transport, and acceptance of ready-mixed concrete. The reference standard for RMC operations in India.
Key sections
- 01Definitions
- 02Ordering
- 03Manufacture and delivery
- 04Acceptance criteria
- 05QC requirements
Critical clauses
Clause 5.0Ordering
Specify grade, slump, max aggregate, exposure, additional requirements.
In practiceUse a structured order form to avoid errors.
Clause 6.0Delivery Time
Within 90 min of batching, 30 min of arrival.
In practicePlan trip times — Bangalore traffic kills this.
Clause 7.0Acceptance
Per IS 456 strength, slump within tolerance.
In practiceReject if slump > +25mm or < -25mm of design.
Practical implications
For specifiers
Use this for RMC tender clauses.
For suppliers
This is your operating manual.
For executors
Reject loads outside spec.
FAQs
Can water be added at site?
Only if total w/c stays within design — and only by RMC supervisor.
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