DMRB Volume 2 Section 2 Part 5 (BD 65/97) Highway structures: Design (substructures and special structures) material. Special structures. Design criteria for collision protection beams

Publication Year

1997

Document Status

Withdrawn

Abstract

Collisions of heavy goods vehicles with bridge superstructures and certain tunnel entrances continue to occur at an undesirably high rate and are a major concern to the various authorities. On of the recommended measures is the provision of collision protection beams. The purpose of this Standard is to give guidance for the engineering requirements of such beams. Collision Protection Beams (or CPBs) may be installed to protect existing bridge superstructures or road tunnel entrances, having sub-standard headroom or a history of bridge bashing, from the effects of collision by road vehicles. Two beams are normally required for each structure, one at each approach, across the full carriageway width. The CPB support shall be integral with the bridge, or tunnel supports. Additional requirements for the continued effective operation of such beams are also given.

Document History

Superseded by BD 65/14. DMRB 2.2.5. Design manual for roads and bridges (DMRB). Not formally implemented by the NRA for use in Ireland, but should be considered as background reading.

ISBN

9780115518942

Publisher Information