IS 14732:2000 is the Indian Standard (BIS) for laying of precast concrete blocks for paving. This standard provides a code of practice for laying precast concrete blocks for paving applications. It details the requirements for materials, subgrade and sub-base preparation, laying of bedding sand and blocks, compaction, and joint filling to create a durable interlocking pavement system.
Provides guidelines for the laying and installation of precast concrete blocks for various paving applications.
Overview
- Status
- Current
- Usage level
- Frequently Used
- Domain
- Transportation — Flooring and Paving
- Type
- Code of Practice
Also on InfraLens for IS 14732
BIM-relevant code. See the BIM Hub for ISO 19650, IFC, and LOD/LOIN frameworks used alongside it.
Practical Notes
! Ensure robust and well-constructed edge restraints are in place before laying blocks, as they are critical for the pavement's structural integrity.
! The bedding sand should be screeded to the correct uncompacted thickness and should not be disturbed before laying the blocks. Do not pre-compact the bedding sand.
! Compaction should be done with a high-frequency, low-amplitude plate vibrator, starting from the edges and working towards the center. Multiple passes are required until no further settlement is observed.
Frequently referenced clauses
concrete blockssandaggregate
International Equivalents
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International Comparison — Coming Soon
We're adding equivalent international standards for this code.
Key Values6
Quick Reference Values
Compacted bedding sand thickness20 mm to 40 mm
Recommended joint width2 mm to 3 mm
Final surface level tolerance±10 mm under a 3 m straightedge
Bedding sand passing 150-micron sieve< 10 percent
Bedding sand passing 2.36 mm sieve95 to 100 percent
Minimum slope for surface drainage2 percent (1 in 50)
Tables & Referenced Sections
Key Tables
Table 1 - Grading Requirements for Bedding Sand
Table A.1 - Recommended Pavement Layer Thicknesses for Various Traffic Categories
Key Clauses
Clause 5 - Materials
Clause 6 - Subgrade Preparation
Clause 8 - Bedding Sand
Clause 9 - Laying of Blocks
Clause 10 - Compaction
Clause 11 - Joint Filling
Frequently Asked Questions4
What is the correct thickness for the bedding sand layer?+
The compacted thickness should be between 20 mm and 40 mm (Clause 8.1).
What are the grading requirements for bedding sand?+
The sand must conform to Table 1, with key requirements being 95-100% passing the 2.36 mm sieve and less than 10% passing the 150-micron sieve.
What is the acceptable tolerance for the final paved surface level?+
The finished surface should not deviate by more than ±10 mm when checked with a 3-meter straight edge (Clause 12.1).
What material is used for filling joints between pavers?+
Dry, fine sand that passes a 2.36 mm IS Sieve and is free from soluble salts (Clause 11.1).
QA/QC Inspection Templates
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QA/QC templates coming soon for this code.