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A steel column is extended by welding or bolting splice plates on the flanges and webs or walls of the columns to provide a few inches or feet of load transfer from the upper to the lower column section. A timber column is usually extended by the use of a steel tube or wrapped-around sheet-metal plate bolted onto the two connecting timber sections.
A reinforced concrete column is a structural member designed to carry compressive loads, composed of concrete with an embedded steel frame to provide reinforcement. For design purposes, the columns are separated into two categories: short columns and slender columns.
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.
The hoods serve to minimize direct sunlight, thus reducing the interior temperature during warm South Carolina summers. Like many Modern buildings, the first level is recessed beneath an arcade supported by square columns. The building has a steel frame and is clad in pre-cast concrete panels and dark gray cold spring natural granite.
An extra wet mix was used to ensure complete contact with the rebars and uniform density in the columns. Floor slabs were poured without joints at the rate of three stories per month. Columns measured 30 by 34 inches (760 by 860 mm) for the first ten floors and 12 inches (300 mm) square for the rest.
The modern superstructure clashed with the granite Roman columns on the building's facade. After the Fed moved to its second building in 1973, the new owner, a partnership of New York developers, Peter V. Tishman and Jay Marc Schwamm, had the lower portion covered with something that was a better match to the skyscraper "hat" on top.
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