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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 , cut out the damaged section, replace it with the dutchman, and bolt the connectors back in place. This ...
On rail lines which include electrification by a third rail or an overhead line system, maintenance of way work also includes installing, repairing and replacing these systems. [20] [21] [22] Overhead line electrification while complex, is a task that with proper planning, done from trains on existing rail lines.
During the summer of 2007, CONNDOT performed a $6.9 million emergency repair project to the Moses Wheeler Bridge after several large holes opened up in the bridge deck, [3] and advanced deterioration of the structural steel was discovered during a routine inspection. The project involved a full-depth patch and repair of the bridge deck, roadway ...
The typical deck railing is generally built from pressure treated lumber. [14] Posts on a deck are also typically pressure treated wood and standard sizes are 4x4, 6x6, and 8x8. These posts give structural support to the railing assembly and are the most critical part for the safety of the guard rail assembly. [15]
Seismic retrofitting is the modification of existing structures to make them more resistant to seismic activity, ground motion, or soil failure due to earthquakes.With better understanding of seismic demand on structures and with recent experiences with large earthquakes near urban centers, the need of seismic retrofitting is well acknowledged.
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