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Autoclaved aerated concrete (AAC) is a lightweight, precast, cellular concrete building material. It is eco-friendly, [ 1 ] and suitable for producing concrete-like blocks . It is composed of quartz sand , calcined gypsum , lime , portland cement , water, and aluminium powder .
Catnic Components had a patent for a steel lintel, used to provide structural support over a door or window opening in a brick wall. The lintel is hollow, being made from sheet steel pressed into a rectangular or trapezoidal shape with a wind to anchor the device to the surrounding brickwork. Part of the specification required a bar to "extend ...
Beam and block is a construction method to support flooring, especially for ground floors as well as multi story buildings. [1] It is made of cast concrete, one piece of which is a prestressed concrete beam, which can be an inverted T-shaped beam, or lintel, the other piece being a simple rectangular block. [1]
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Wall framing in house construction includes the vertical and horizontal members of exterior walls and interior partitions, both of bearing walls and non-bearing walls. . These stick members, referred to as studs, wall plates and lintels (sometimes called headers), serve as a nailing base for all covering material and support the upper floor platforms, which provide the lateral strength along a
A bear that rampaged through a Japanese supermarket for two days was lured out with food coated in honey, local officials said. The animal was trapped and later killed on Monday, police said.
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Modern-day lintels may be made using prestressed concrete and are also referred to as beams in beam-and-block slabs or as ribs in rib-and-block slabs. These prestressed concrete lintels and blocks can serve as components that are packed together and propped to form a suspended-floor concrete slab. An arch functions as a curved lintel. [1] [2]