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A jack post (telepost, adjustable steel column) is a steel post used in the construction trades for temporary support of ceilings, walls and trenches ().They are designed to be able to mechanically telescope to about twice their shortest length in order to span a wide variety of spaces.
The steel shell of a Lally column is filled with concrete, which carries a share of the compression load, and helps prevent local buckling of the shell. [ 2 ] The advantage of a Lally column over a conventional structural steel is that it can be cut it to length on a construction site with simple hand tools such as a plumber's pipe cutter or a ...
Open Web Steel Joists, K-Series, were primarily developed to provide structural support for floors and roofs of buildings. They possess multiple advantages and features which have resulted in their wide use and acceptance throughout the United States and other countries.
The central "web" of the steel I-beam is often wider than a column web to resist the higher bending moments that occur in beams. Wide sheets of steel deck can be used to cover the top of the steel frame as a "form" or corrugated mold, below a thick layer of concrete and steel reinforcing bars. Another popular alternative is a floor of precast ...
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.
Post and lintel construction of the Airavatesvara Temple, India, a World Heritage Monument site Leinster House in Dublin retains column-shaped pilasters under a pediment for aesthetic reasons. Post and lintel (also called prop and lintel , a trabeated system , or a trilithic system ) is a building system where strong horizontal elements are ...
Spiral columns are cylindrical columns with a continuous helical bar wrapping around the column. The spiral acts to provide support in the transverse direction and prevent the column from barreling. The amount of reinforcement is required to provide additional load-carrying capacity greater than or equal to that attributed from the shell as to ...
The columns are identical, apart from the boundary conditions. A conclusion from the above is that the buckling load of a column may be increased by changing its material to one with a higher modulus of elasticity (E), or changing the design of the column's cross section so as to increase its moment of inertia.