Search results
Results from the WOW.Com Content Network
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 ...
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.
Schematic cross section of a pressurized caisson. In geotechnical engineering, a caisson (/ ˈ k eɪ s ən,-s ɒ n /; borrowed from French caisson 'box', from Italian cassone 'large box', an augmentative of cassa) is a watertight retaining structure [1] used, for example, to work on the foundations of a bridge pier, for the construction of a concrete dam, [2] or for the repair of ships.
Sometimes this can be limited by dewatering one compartment at a time, or in groups, taking into account the beam strength loads on the ship induced by the load distribution. [6]: Ch.10 Ch.10 Small cofferdams are used for pumping or to allow salvors access to spaces that are covered by water at some stage of the tide.
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 ...
Type {{{type}}} Carries {{{carries}}} Spans {{{crosses}}} Locale {{{locale}}} Official name {{{official_name}}} Owner {{{owner}}} Operator {{{operator}}} Maintained by
Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!
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.