Guidelines for the Design of Plain Jointed Rigid Pavements for Highways
View at irc.nic.inWhat this code covers
Cement concrete slab design with dowel bar and tie bar specifications. Covers design factors: traffic, subgrade CBR, environment, materials, slab thickness, and joint spacing.
What this means on site
Mandatory for rigid pavement projects. Specifies exact dowel bar dimensions (25mm dia, 360mm length, 300mm spacing) and tie bars. Deviations are flagged during quality audits.
Other pavement codes
Guidelines for the Design of Flexible Pavements
Design procedures for bituminous asphalt pavements based on CBR values. Applies to expressways, national highways, state highways, and major district roads. Traffic capacity extended to 150 msa.
Guidelines for the Use of Dry Lean Concrete as Sub-base for Rigid Pavement
DLC mix proportioning, materials including fly ash and GGBFS admixtures, subgrade preparation, and construction procedures. Minimum thickness: 150mm for NH/SH, 100mm for other roads.
Standard Specifications and Code of Practice for Construction and Maintenance of Bituminous Roads
Construction standards for all hot-mix bituminous layers: Bituminous Macadam (BM), Dense Bituminous Macadam (DBM), Bituminous Concrete (BC), and Semi-Dense Bituminous Concrete (SDBC). Covers material requirements, mix design, laying and compaction procedures, acceptance criteria, and surface tolerances.
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