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  2. Piling - Wikipedia

    en.wikipedia.org/wiki/Piling

    In drilled pier foundations, the piers can be connected with grade beams on which the structure sits, sometimes with heavy column loads bearing directly on the piers. In some residential construction, the piers are extended above the ground level, and wood beams bearing on the piers are used to support the structure.

  3. Southend Pier - Wikipedia

    en.wikipedia.org/wiki/Southend_Pier

    Southend Pier is a major landmark in Southend-on-Sea, Essex, United Kingdom. Extending 1.33 miles (2.14 km) into the Thames Estuary, it is the longest pleasure pier in the world. [2] The bill to build the new pier, to replace a previous timber jetty, received royal assent as the Southend Pier Act 1829 (10 Geo. 4. c.

  4. Pin and hanger assembly - Wikipedia

    en.wikipedia.org/wiki/Pin_and_hanger_assembly

    Attempts have been made to increase the safety of bridges with pin and hanger assemblies by adding some form of redundancy to the assembly. Retrofits that add redundancy to pin and hanger assemblies include adding a "catcher's mitt"‍—‌a short steel beam attached to the bottom of the cantilevered girder that extends out beneath the suspended girder to "catch" the suspended girder should ...

  5. Cofferdam - Wikipedia

    en.wikipedia.org/wiki/Cofferdam

    Cofferdams are commonly used for construction or repair of permanent dams, oil platforms, bridge piers, etc., built within water. They also form an integral part of naval architecture . These cofferdams are usually welded steel structures, with components consisting of sheet piles , wales , and cross braces .

  6. Dutchman (repair) - Wikipedia

    en.wikipedia.org/wiki/Dutchman_(repair)

    A rail repair dutchman is typically a 4–6-inch (100–150 mm) long piece of rail that is cut in advance for the purpose and carried by a section crew. If the gang finds a rail with a chipped or broken end, they remove the connector plates ( fishplates ), cut out the damaged section, replace it with the dutchman, and bolt the connectors back ...

  7. Pier (bridge structure) - Wikipedia

    en.wikipedia.org/wiki/Pier_(bridge_structure)

    The pier of a bridge is an intermediate support that holds the deck of the structure. It is a massive and permanent support, as opposed to the shoring , which is lighter and provides temporary support.

  8. Bridge scour - Wikipedia

    en.wikipedia.org/wiki/Bridge_scour

    The downward pressure gradient at the pier face directs the flow downwards. Local pier scour begins when the downflow velocity near the stagnation point is strong enough to overcome the resistance to motion of the bed particles. During flooding, although the foundations of a bridge might not suffer damage, the fill behind abutments may scour.

  9. Auxiliary floating drydock - Wikipedia

    en.wikipedia.org/wiki/Auxiliary_floating_drydock

    USS ARD-1 under tow by USS Bridge 28 October 1934 USS Waterford (ARD-5) ARD-6 submerged at Dutch Harbor, Alaska with Sub USS S-46 for repair 1944. Auxiliary Repair Docks were built by Pacific Bridge Company in Alameda, California. ARD are 483 ft (147 m) long, have a beam of 71 ft (22 m), a draft of 5 ft (1.5 m), and a displacement of 4,800 tons.