Download Concrete Bridge Designer's Manual by E.Pennells PDF

By E.Pennells

This ebook supplies bridge engineers transparent tips on layout and comprises 88 information sheets of layout details, charts and cost lists.

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Extra info for Concrete Bridge Designer's Manual

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Parapets Data sheet No 15 P1 Vehicle parapet with plinth 700mm high or more. For use on motorway under-bridges P1 Vehicle parapet with plinth less than 700mm high. For use on motorway under-bridges. P2 Vehicle pedestrian parapet. For use on all-purpose road bridges, the design speed being stated. P2 Vehicle pedestrian parapet. For use on road bridges where speed is restricted to 48 km/h. 33 Expansion joints Data sheet No 16 Above left: FT expansion joint panel. Above right: FT joint installed. Left: Specimen section of Rheinstahl joint.

Combined PTFE and reinforced rubber bearing, allowing rotation by deformation of rubber, and translation by sliding. Laminated rubber bearing allowing movements and rotations by deformation of rubber. Rocker bearing allowing translational movement in one direction only, and rotation about axis of rollers. “Pot” bearing allowing movement in any direction within the plane of the bearing by low friction sliding surfaces, and rotation about any axis by deformation of an enclosed rubber membrane. 36 Deck movements Data sheet No 18 Movements to be catered for at bearings and expansion joints arise from the following causes.

HMSO, London, 1979 pp. 93. 28 CHAPTER 3 Furnishings Parapets The minimum function of a parapet is to prevent pedestrians from accidentally falling from a bridge deck. In recent times it has become expected that they will also provide some measure of similar protection for vehicles. The requirement for a parapet to provide a safeguard against a vehicle which is out of control plunging over the edge of a bridge cannot be specified in terms of a static loading condition. The ability to absorb or redirect the energy of an errant vehicle is a function of the flexibility and constructional details of a parapet as much as on the nature and speed of the vehicle.

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