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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, concrete masonry unit (CMU), or by various other terms, is a standard-size rectangular block used in building 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]
Blocks have a much greater range of sizes. Standard co-ordinating sizes in length and height (in mm) include 400×200, 450×150, 450×200, 450×225, ...
Compact (15 mm × 11 mm × 1 mm), DRM, up to 2 GB. [4] (2 GB cards use larger block sizes and may not be compatible with some host devices. See Article) microSD: 2005 2 GB [4] Subcompact (15 mm × 11 mm × 1 mm), DRM, up to 2 GB. [4] (2 GB cards use larger
Metric gauge block set, 112 pcs Another set with 8 pcs, 125 mm - 500 mm Trolley model. Gauge blocks (also known as gage blocks, Johansson gauges, slip gauges, or Jo blocks) are a system for producing precision lengths.
Bricks may be differentiated from blocks by size. For example, in the UK a brick is defined as a unit having dimensions less than 337.5 mm × 225 mm × 112.5 mm (13.3 in × 8.9 in × 4.4 in) and a block is defined as a unit having one or more dimensions greater than the largest possible brick. [3]
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In the U.S. gypsum blocks were made in thicknesses of 2, 3, 4 and 6 in (51, 76, 102 and 152 mm). [2] In Europe they are available in thicknesses of 60 mm, 70 mm, 80 mm or 100 mm. In European residential buildings regularly 80 or 100 mm thick gypsum blocks are being used. For construction purposes especially two densities are important: