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In civil engineering, concrete leveling is a procedure that attempts to correct an uneven concrete surface by altering the foundation that the surface sits upon. It is a cheaper alternative to having replacement concrete poured and is commonly performed at small businesses and private homes as well as at factories, warehouses, airports and on roads, highways and other infrastructure.
The cage is then lowered into the hole and the concrete is placed. Steel CSL tubes are preferred over PVC tubes because studies have shown that PVC tubes tend to debond from the concrete due to the heat of hydration process of concrete, resulting in erratic CSL test results. [1] [2] The tubes are filled with water as an intermediate medium.
Concrete offshore platforms of the gravity-base type are almost always constructed in their vertical attitude. This allows the inshore installation of deck girders and equipment and the later transport of the whole structure to the installation site. The most common concrete designs are: [citation needed] Condeep (with one, two, three or four ...
Expansion joint on a bridge. A expansion joint, or movement joint, is an assembly designed to hold parts together while safely absorbing temperature-induced expansion and contraction of building materials.
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 ...
During installation, the power cable is spliced into the ESP then attached to the outside of the tubing by corrosion resistant metal bands as it is run in the hole. Specialized guards, called cannon guards, may be installed over each tubing collar to prevent the cable from rubbing on the casing walls which can cause premature cable failure.