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One acre equals 1 ⁄ 640 (0.0015625) square mile, 4,840 square yards, 43,560 square feet, [2] or about 4,047 square metres (0.4047 hectares) (see below).While all modern variants of the acre contain 4,840 square yards, there are alternative definitions of a yard, so the exact size of an acre depends upon the particular yard on which it is based.
In the United States, modern standard bricks are specified for various uses; [47] The most commonly used is the modular brick has the actual dimensions of 7 + 5 ⁄ 8 × 3 + 5 ⁄ 8 × 2 + 1 ⁄ 4 inches (194 × 92 × 57 mm).
Working dimensions is the size of a manufactured brick. It is also called the nominal size of a brick. Brick size may be slightly different due to shrinkage or distortion due to firing, etc. An example of a co-ordinating metric commonly used for bricks in the UK is as follows: [4] [5] [6] Bricks of dimensions 215 mm × 102.5 mm × 65 mm; Mortar ...
The use of brick construction increased in Chicago after the Great Chicago fire of 1871. They are called common brick since they were used in multiwythe mass walls with many of the brick used on inner wythes while a facing brick was used for the outer wythe. Most of the brick manufacturers closed around the middle of the 20th century, and now ...
The square is an Imperial unit of area that is used in the construction industry in the United States and Canada, [1] and was historically used in Australia. One square is equal to 100 square feet . Examples where the unit is used are roofing shingles, metal roofing, vinyl siding, and fibercement siding products.
Comparison of 1 square foot with some Imperial and metric units of area. The square foot (pl. square feet; abbreviated sq ft, sf, or ft 2; also denoted by ' 2 and ⏍) is an imperial unit and U.S. customary unit (non-SI, non-metric) of area, used mainly in the United States, Canada, the United Kingdom, Bangladesh, India, Nepal, Pakistan, Ghana, Liberia, Malaysia, Myanmar, Singapore and Hong Kong.
A dimension that establishes a distance away from the finished floor. Example would be the top of a coffee table to the shag of the carpet, not where the bottom of the tables feet dig in. AISI: American Iron and Steel Institute: The AISI acronym is commonly seen as a prefix to steel grades, for example, "AISI 4140".
Air brick: A brick with perforations to allow the passage of air through a wall. Usually used to permit the ventilation of underfloor areas. Bat: A cut brick. A quarter bat is one-quarter the length of a stretcher. A half-bat is one-half. [1] Bullnose: Rounded edges are useful for window sills, and capping on low and freestanding walls.