Standards Development

Scope

This international standard provides design process and detail guide for designing prestressed concrete I-girder bridges of maximum span of 60 m.

Purpose

This International Standard can be used as an alternative to the development of a National Concrete Bridge Design and Construction Code, or equivalent document in countries where no national design codes are available by themselves, or as an alternative to the National Concrete Bridge Design and Construction Code in countries where specifically considered and accepted by the national standards body or other appropriate regulatory organization, and applies to the planning, design and construction of structural concrete bridges to be used in new bridges of restricted span length, height of piers, and type.

The purpose of these guidelines is to provide sufficient information to perform the design of the structural concrete bridge that complies with the limitations established in 6.1. The rules of design as set forth in this International Standard are simplifications of more elaborate requirements. This standard admitted a new design concept called incremental prestressing method which applies prestressing force incrementally according to the weight increase of bridge during construction. The incremental prestressing concept was first applied to I-girder which can increase the depth to length ratio of the girder up to 50%. This standard also contains several design techniques such as standard construction schedule, and so on.