IRC:78-2019 is a substantial technical upgrade, but the undermines its utility. A genuine, searchable, high-resolution digital edition with hyperlinked clauses is urgently needed. For critical bridge projects, do not rely on a scanned copy; purchase the official PDF from IRC.
, titled “Standard Specifications and Code of Practice for Stone Masonry Arch Bridges” , is a revision of the previous IRC:78-1983 standard. This document provides comprehensive guidelines for the planning, design, construction, and maintenance of stone masonry arch bridges. irc-78 2019 pdf
According to Clause 4.2.1, engineers must perform scour depth analysis based on IRC:45 standards to determine the design scour level, which is typically 1.27 times the natural scour. IRC:78-2019 is a substantial technical upgrade, but the
The 2019 context is part of a broader transition period where the IRC updated several codes (2017–2020) to better integrate with IRC:112 (Concrete Road Bridges) . , titled “Standard Specifications and Code of Practice