Preface
This new edition of CSA Standard S6, Design of Highway Bridges supersedes the previous edition published in 1966, and earlier editions published in 1952, 1938, 1929, and 1922. It is not a revision but rather a replacement which reflects the philosophy of the Committee as to the requirements of a Canadian bridge design specification.
The Committee, which consists of practising bridge engineers, representatives from industry and the universities, has attempted to produce a specification which used with reasonable engineering judgement should result in safe, economical structures. It is intended that in the areas of substructure design the specification requirements should be supplemented by adequate field investigations including recommendations from geotechnical experts and where necessary experts in the fields of river hydraulics.
As with any specification not all of the Clauses were unanimously approved by the members of the Committee. Differences of opinion have occurred but the final specification represents the majority opinion.
Revisions will be carried out on a continuing basis and to that end constructive criticism is invited and anticipated from the user.
This Standard was prepared by the Committee on Highway Bridges under the jurisdiction of the Sectional Committee on Structures and was formally approved by these Committees and the CSA Standards Policy Board.
Scope
1.1
This Standard applies to the design of highway bridges which have spans up to 500 feet. It may also be used for the design of bridges which have spans in excess of 500 feet but for such structures supplementary design specifications usually will be required.
1.2
Provisions for street car or railway traffic are not included in this Standard. When this type of traffic is a design consideration, the Engineer shall specify the loadings to be assumed. Such loadings may be either in lieu of, or supplementary to, the loadings specified herein.
