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A shield should not be confused with a shore. While they may serve a similar function, trench shoring is a different physical application that holds up the walls of a trench to prevent collapse. [1] In the US, use of a trench shield is governed by OSHA 29 CFR Part 1926.650-.652 Subpart P-Excavations.
The phrase can also be used as a noun to refer to the materials used in the process. [1] Several methods can be used to shore up a trench. Hydraulic shoring is the use of hydraulic pistons that can be pumped outward until they press up against the trench walls.
Greensheet is a local community newspaper based in Houston, Texas, with local offices in Houston and Dallas, Texas. The newspaper was founded in March 1970. Greensheet currently has 19 print editions in Texas. 12 in Houston, Texas; 7 in Dallas, Texas and Fort Worth, Texas. Greensheet also provides an online marketplace offering free classified ...
Shoring is a term used in the process of air freight container and pallet (ULD) buildup, e.g. making sure that the cargo placed in containers and on pallets is packed securely and efficiently. Specifically, shoring is done to affix cargo to the ULD and adapt different form factors of cargo items to maximize the use of the available ULD volume.
Trench shoring is often used in trenchworks to protect workers and stabilise the steep walls. An alternative to digging trenches is to create a utility tunnel. Such a tunnel may be dug by boring or by using a trench for cut-and-cover construction. The advantages of utility tunnels are the reduction of maintenance manholes, one-time relocation ...
A lightweight box crib Hardwood railway sleepers used as a box crib, North Australian Railway, 1975 Bailey Island Bridge, Harpswell, Maine. The only granite cribstone bridge in the world. A box crib or cribbing is a temporary wooden structure used to support heavy objects during construction, relocation, vehicle extrication and urban search and ...
In the close confines of a trench, rifles and fixed bayonets were often too long for effective use, and entrenching tools were often used as auxiliary arms for close quarters combat. [13] In Nancy Mitford 's 1945 novel, The Pursuit of Love , there hangs over the chimney-piece an entrenching tool "with which, in 1915, Uncle Matthew had whacked ...
The trench is at all times kept filled with slurry to prevent its collapse, but the fluid filling allows the excavation machinery and excavation spoil to be moved without hindrance. Once a particular depth of trench is reached, a reinforcing cage is lowered into the slurry-filled pit and the pit is filled with concrete from the bottom up using ...