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Jack post. A jack post (telepost, adjustable steel column) is a steel post used in the construction trades for temporary support of ceilings, walls and trenches (shoring). They are designed to be able to mechanically telescope to about twice their shortest length in order to span a wide variety of spaces. Most examples use removable pins for ...
The major developments include the design of connection devices (coupler), transitions to other spanning beams such as steel pipes or profiles or reusable timber beams, and adjustable steel props. In 1935 W.A. de Vigier designed an adjustable steel prop which revolutionized many aspects of the construction industry including to support slab ...
Lally column. A Lally column is a round or square thin-walled structural steel column filled with concrete, [1] and oriented vertically to provide support to beams or timbers stretching over long spans. Lally columns are an engineered component and as such must be installed exactly as the design engineer specified.
All support systems have to be height adjustable to allow the formwork to be placed at the correct height and to be removed after the concrete is cured. Normally adjustable metal props similar to (or the same as) those used by beam slab formwork are used to support these systems.
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330000 adjustable steel prop 291000 post shore 83800 adjustable steel post 88100 adjustable jack post 51000 adjustable steel column 42900 shoring post 32000 Acrow prop 18900 adjustable steel shore In this case the clear winner is "adjustable steel prop", which is the most common term used in China.
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