Bridge piers
AssigneeThe Secretary of State for Defence in Her Britannic Majesty's Government of the United Kingdom of Great Britain and Northern Ireland
InventorJames P. FitzGerald-Smith
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Abstract
A bridge pier is constructed from a number of serially gradated cribs nestable one within the other for transportation and manually mountable one upon the other in order of decreasing size on arrival at a site by the use of rotatable davits attachable to each upper-most crib in turn. When used for dry gap bridging the cribs are assembled upon a pair of adjustable length telescopic legs each pivotally connected to a load-spreading grillage and adjustable for use on slopes of up to 1 in 20. Both initial levelling and subsequent adjustment for ground settlement can be achieved by adjustment of the telescopic legs. When required for use in deep water bridging the cribs may be mounted directly upon a pontoon.
Claims7
A bridge pier assembly including a multiplicity of serially gradated cribs, each nestable within the next larger in a stowed configuration and each mountable upon the next larger in an erected configuration, a pair of davits attachable to two opposing end faces respectively of any one of the cribs so as to be rotatable in a substantially vertical plane when the crib is disposed in the erected configuration, and a pair of base units each comprising a grillage and a telescopic leg pivotally supportable upon the grillage, the telescopic legs in said base units being adapted for jointly supporting the largest crib.
Dependencies are inferred from the claim text.