IRC Codes›Geometric Design
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Geometric Design

Alignment, horizontal/vertical curves, cross-sections, intersections, interchanges.

9 codes in this category
IRC SP 21
Guidelines for Design of Intersection and Grade Separated Structures
This IRC code offers a detailed framework for the geometric design of road intersections and grade-separated structures, addressing both at-grade junctions and …
📅 2009CurrentFrequently Used📄 PDF
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IRC SP 23
Criteria for Design of Vertical Curves
This IRC code is essential for highway engineers to design smooth and safe vertical alignments for roads. It details the methods for calculating the required le…
📅 2012CurrentFrequently Used
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IRC 38
Guidelines for Design of Horizontal Curves for Highways and Design Tables
IRC 38 provides design tables for horizontal curves — the most referenced IRC code for road alignment design. Every curve on every highway in India is designed …
📅 1988CurrentFrequently Used📄 PDF
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IRC SP 41
Guidelines on Design of At-Grade Intersections in Rural and Urban Areas
This guideline details the principles and practices for designing safe and efficient at-grade intersections. It covers a wide range of intersection configuratio…
📅 2005CurrentFrequently Used
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IRC 52
Recommendations About the Alignment Survey and Geometric Design of Hill Roads
This IRC code is essential for engineers involved in the planning and design of hill roads. It details methodologies for alignment surveys, including reconnaiss…
📅 2001CurrentFrequently Used
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IRC SP 64
Guidelines for Capacity of Roads in Rural Areas
This IRC code, 'Guidelines for Capacity of Roads in Rural Areas', establishes the framework for evaluating the traffic carrying capacity of rural road networks.…
📅 2017CurrentFrequently Used📄 PDF
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IRC 73
Geometric Design Standards for Single Lane Roads in Rural Areas
IRC 73 covers geometric design for single-lane rural roads — the backbone of India's PMGSY (Pradhan Mantri Gram Sadak Yojana) programme. Carriageway width 3.75m…
📅 1980CurrentFrequently Used📄 PDF
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IRC 86
Geometric Design Standards for Rural Highways
IRC 86 covers the geometric design of rural highways — the shape, alignment, and cross-section of roads. Design speed determines every geometric parameter: sigh…
📅 2018CurrentFrequently Used📄 PDF
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IRC 87
Guidelines for Planning and Design of Interchanges for National Highways
This IRC code is essential for highway engineers involved in the planning and design of interchanges on National Highways. It outlines the fundamental principle…
📅 2018CurrentFrequently Used📄 PDF
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