The Indian Roads Congress (IRC) code that is used for identifying or numbering the culverts and bridges is
- AIRC 7-1971Correct
- BIRC 6-2001
- CIRC 5-1981
- DIRC 9-1991
Solution
Concept
IRC code for bridge and culvert numbering
Formula
NONE
Step-by-step solution
1. Identify the IRC code designated for identifying and numbering bridges and culverts. 2. IRC:7 is titled 'Recommended Practice for Numbering Bridges and Culverts'. 3. IRC:6 covers loads and stresses for bridges, IRC:5 covers general features of design, and IRC:9 covers traffic census. 4. Therefore, option A (IRC 7-1971) is the correct code. Answer: A
Explanation
IRC: 7-1971 (Recommended Practice for Numbering Bridges and Culverts) provides standard guidelines for numbering and identifying bridges and culverts on all highways in India. It defines the fractional format (kilometer number in numerator, serial number within that kilometer in denominator) and prescribes marker plate specifications.
Why the other options are wrong
B) IRC 6-2001 specifies loads and load combinations for highway bridges. C) IRC 5-1981 specifies general features of design for road bridges. D) IRC 9-1991 covers traffic census on non-urban roads.
Shortcut
IRC 7 = 7 letters in 'NUMBERS' -> Numbering of bridges and culverts.
Common mistake
Selecting IRC 6 (loads) or IRC 5 (general design features) because they are more frequently used bridge codes.
Correct answer: A) IRC 7-1971