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A pallet of "8-inch" concrete blocks An interior wall of painted concrete blocks Concrete masonry blocks A building constructed with concrete masonry blocks. A concrete block, also known as a cinder block in North American English, breeze block in British English, or concrete masonry unit (CMU), or by various other terms, is a standard-size rectangular block used in building construction.
Jesse Besser (1882–1970) was an inventor and manufacturer from Alpena in the U.S. state of Michigan.He is best known for inventing, and supervising a series of improvements to, a tamping machine used to rapidly press wet, flexible concrete into blocks, thereby making possible a new generation of applications in masonry construction.
A standard metric (concrete) block is 190 mm wide, 390 mm long, and 190 mm high, which allows for 10 mm mortar joints in between bricks, giving a standard unit size of 200 mm square by 400 mm long. [3] A standard metric brick is 90 by 57 by 190 mm; with 10 mm of mortar, that produces a standard unit of 100 mm x 200 mm. [3]
8-inch (200 mm) hollow CMU (concrete masonry unit) with 3-inch (76 mm) steel studs, fiberglass insulation and 1 ⁄ 2-inch (13 mm) drywall on each side [35] 72 8-inch (200 mm) concrete block wall, painted, with 1 ⁄ 2-inch (13 mm) drywall on independent steel stud walls, each side, insulation in cavities
Below is a list of currently available tablet PCs grouped by their width, depth, height, screen size, ... 8 in (200 mm) 5.31 in (135 mm) 0.24 in (6.1 mm)
Gauge blocks (also known as gage blocks, Johansson gauges, slip gauges, or Jo blocks) are a system for producing precision lengths. The individual gauge block is a metal or ceramic block that has been precision ground and lapped to a specific thickness. Gauge blocks come in sets of blocks with a range of standard lengths.
It would be nice to have a chart of standard CMU sizes in this article. Anyone? —The preceding unsigned comment was added by 24.149.184.142 15:06, 8 April 2007 (UTC). I also believe it would be helpful to mention their modularity with brick sizes. In the US one CMU block is both the same width and depth as two bricks plus a mortar joint.
Blocks dimensions are 220 millimetres (8.7 in) wide, 115 millimetres (4.5 in) high and 230 millimetres (9.1 in) long. It weighs approximately 12 kilograms (26 lb). Once blocks are manufactured it is "wet cured" for a period of 14–21 days to reach desired strength.