Explanation: IRC Class A Loading. (i) This type of loading is used in the design of all permanent bridges. It is considered as the standard live load of the bridge. When we design a bridge using class AA type loading, then it must be checked for class A loading also.

What is the load of a bridge?

girder: The “beam” of a bridge; usually horizontal member. load: Any of the forces that a structure is calculated to oppose, comprising any unmoving and unvarying force (dead load), any load from wind or earthquake (environmental load), and any other moving or temporary force (live load).

IRC, for these reasons, has standardized the live loads to be considered in the design of a highway bridge. The loads have been classified under four categories namely Class AA, Class 70R, Class A, and Class R loading.

### What is full form of IRC?

Internet Relay Chat (IRC) is a text-based chat (instant messaging) system. IRC is designed for group communication in discussion forums, called channels, but also allows one-on-one communication via private messages as well as chat and data transfer, including file sharing.

What is the total load for Class 70R wheeled?

The wheel load nearer to resultant located towards the higher load intensity side with respect to resultant will be the critical load. For instance, for a bridge of 20 m span, the sum of the loads on left and right side of the resultant for Class-70R loading (case 70R-3) is 510 and 490 kN respectively.

#### What is the weight of wheeled vehicle comprising 4 wheels consider in IRC 70R loading?

IRC Class 70 R Loading b) Wheeled vehicle comprising 4 wheels, each with a load of 100 kN totaling 400 kN.

#### What is Stringer bridge?

The steel stringer or multi-beam bridge type consists of a series of parallel steel beams supporting a deck, usually of wood planks or reinforced concrete. The steel stringer ordinarily makes use of steel beams created by passing a steel bar between rollers to create an I-shaped section.

What are the function of IRC?

FUNCTIONS OF I.R.C. (1) To providing a platform for expression of collective opinion of its members for all the matters affecting the construction and maintenance of roads in India. (2) To suggest improve method of planing, design, construction and maintenance of roads in India.

## What is IRC standard?

Standards for Road-Rail Level Crossings (First Revision) IRC 040. 2002. Standard Specifications and Code of Practice for Road Bridges, Section IV (Brick, Stone and Cement Concrete Block Masonry) (Second Revision)

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