Cinder block dimensions based on ASTM standard (4″, 6″, 8″, 10″ & 12″) | nominal and actual dimensions of cinder block | 4″ cinder block dimensions | 6″ cinder block dimensions | 8″ cinder block dimensions | 10″ cinder block dimensions | 12″ cinder block dimensions.
Block manufacturers those that use cinders material of fly ash or bottom ash, coal dust, recycle aggregate, fine particles of ash after burning of coal as an aggregate material are known as cinder blocks in the United States. Its other name concrete block or CMU is also popular.
In United Kingdom, CMU (concrete masonry unit) is known as breeze blocks, which is a synonym of fly ash, and hollow blocks in the Philippines. In New Zealand & Canada they are known as concrete blocks. In New Zealand, they are also called construction blocks. In Australia, block are also called as Besser blocks and Besser bricks, because the Besser Company was a major supplier of machines that made concrete blocks. Clinker blocks use clinker as aggregate.
Concrete masonry unit or cinder block in short form represented as CMU made of concrete, mixture of cement, sand and water or industrial wastage like coal dust, fly ash, recycled material, bottom ash, etc. There is a form of concrete masonry unit such as cinder block, concrete bricks, hollow cinder block, solid concrete block, lintel block, concrete stretcher block, concrete pillar blocks, partition concrete block, corner concrete block, concrete pillar block.
In United States, cinder or concrete block or CMU serve as economic building material and there is a wide range of construction application for many types of Residential, Public and industrial building. Due to sturdy and long lasting building material, architect and Engineer will recommended for house construction, retaining wall, security barriers etc and this is best choice.
Cinder block dimensions based on ASTM standard (4″, 6″, 8″, 10″ & 12″)
Cinder block manufactured in a variety of dimensions, they are identified by their depth, such that thickness of wall that creates, for example 4″ CMU or cinder block is normally 4″ wide while 10″ CMU is 10″ wide, represented as depth × height × length. It is also available in half size which helpful in reducing the need to cut cinder block at construction site.
Cinder block dimensions:- in the US, based on ASTM standard, dimensions of cinder block or CMU blocks are nominally 16 inch (410 mm) long by 8 inch (200 mm) high by
8 inch (200 mm) wide. Their actual dimensions are 3⁄8 inch (9.5 mm) less than the nominal dimensions to allow 3⁄8 inch for mortar joints between blocks in any orientation. Their actual dimension is 7 5/8″ × 7 5/8″ × 15 5/8″.
Cinder block nominal dimensions:- In united States, the most common used, nominal dimensions of cinder block are 16 inch (410 mm) long by 8 inch (200 mm) high by 8 inch (200 mm) wide. Nominal dimensions is sum of size of block and thickness of mortar. Cinder blocks available in many size, shape, and dimensions.
Actual dimensions of cinder block:- in the US, actual dimensions of cinder block are 7 5/8″ (400 mm) high by 7 5/8″ (190 mm) wide by 15 5/8″ (400 mm) long. Actual dimensions of cinder block are 3⁄8 inch (9.5 mm) less than the nominal dimensions to allow 3⁄8 inch for mortar joints between blocks in any orientation.
Cinder block must confirm to ASTM standard when fabricating, regarding this, “cinder block standard size”, most commonly used, a standard size of cinder block is 16 inch long by 8 inch high by 8 inch depth, which is represented in inch as 8″×8″×16″ or in mm as 200 × 200 × 400 (depth × height× length). This is nominal size of standard cinder block, their actual size measures 3/8 inch or 10mm shorter, allowing for mortar joints, their actual size is 7 5/8″ × 7 5/8″ × 15 5/8″ or approx 190 × 190 × 390 in mm.
A full size of cinder blocks represented as 4 inch wide, 6 inch wide, 8 inch wide, 10 inch wide and 12 inch wide having length of 16″ and height about 8 inch represented as 4″×8″×16″, 6″×8″×16″, 8″×8″×16″, 10″×8″×16″ & 12″×8″×16″. It is also available in half CMU length of 8 inch, the cinder blocks measure a 3/8 inch shorter, allowing for mortar joints.
The most common dimensions for a cinder block are approximately 8 by 8 by 16 inches (203mm × 203mm × 405mm). Their actual sizes however are 7 5/8″ × 7 5/8″ × 15 5/8″ and the cinder blocks measure a 3/8 inch shorter, allowing for mortar joints.
4″ cinder block dimensions
4″ cinder blocks or CMU available in full CMU having length of 16″ long and half CMU of 8″ long.
Dimensions of 4″ full cinder block:-commonly available, dimensions of 4″ full CMU or cinder block are nominally 4 inches wide by 8 inches high by 16 inches long, which is represented in inch as 4 in × 8 in × 16 in or 100 × 200 × 400 in mm (wide × height× length). Their actual dimensions measure 3/8 inch shorter, allowing for mortar joints. Actual dimensions of 4″ full CMU or cinder block are 3 5/8″ × 7 5/8″ × 15 5/8″ or approx 90 mm × 190 mm × 390 mm.
Dimensions of 4″ half cinder block:-commonly available, dimensions of 4″ half CMU or cinder block are nominally 4 inches wide by 8 inches high by 8 inches long, which is represented in inch as 4 in × 8 in × 8 in or 100 × 200 × 200 in mm (wide × height× length). Their actual dimensions measure 3/8 inch shorter, allowing for mortar joints. Actual dimensions of 4″ half CMU or cinder block are 3 5/8″ × 7 5/8″ × 7 5/8″ or approx 90 mm × 190 mm × 190 mm.
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6″ cinder block dimensions
6″ cinder blocks or CMU available in full CMU having length of 16″ long and half CMU of 8″ long.
Dimensions of 6″ full cinder block:-commonly available, dimensions of 6″ full CMU or cinder block are nominally 6 inches wide by 8 inches high by 16 inches long, which is represented in inch as 6 in × 8 in × 16 in or 150 × 200 × 400 in mm (wide × height× length). Their actual dimensions measure 3/8 inch shorter, allowing for mortar joints. Actual dimensions of 6″ full CMU or cinder block are 5 5/8″ × 7 5/8″ × 15 5/8″ or approx 140 mm × 190 mm × 390 mm.
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Dimensions of 6″ half cinder block:-commonly available, dimensions of 6″ half CMU or cinder block are nominally 6 inches wide by 8 inches high by 8 inches long, which is represented in inch as 6 in × 8 in × 8 in or 150 × 200 × 200 in mm (wide × height× length). Their actual dimensions measure 3/8 inch shorter, allowing for mortar joints. Actual dimensions of 6″ half CMU or cinder block are 5 5/8″ × 7 5/8″ × 7 5/8″ or approx 140 mm × 190 mm × 190 mm.
8″ cinder block dimensions
8″ cinder blocks or CMU available in full CMU having length of 16″ long and half CMU of 8″ long.
Dimensions of 8″ full cinder block:-commonly available, dimensions of 8″ full CMU or cinder block are nominally 8 inches wide by 8 inches high by 16 inches long, which is represented in inch as 8 in × 8 in × 16 in or 200 × 200 × 400 in mm (wide × height× length). Their actual dimensions measure 3/8 inch shorter, allowing for mortar joints. Actual dimensions of 8″ full CMU or cinder block are 7 5/8″ × 7 5/8″ × 15 5/8″ or approx 190 mm × 190 mm × 390 mm.
Dimensions of 8″ half cinder block:-commonly available, dimensions of 8″ half CMU or cinder block are nominally 8 inches wide by 8 inches high by 8 inches long, which is represented in inch as 8 in × 8 in × 8 in or 200 × 200 × 200 in mm (wide × height× length). Their actual dimensions measure 3/8 inch shorter, allowing for mortar joints. Actual dimensions of 8″ half CMU or cinder block are 7 5/8″ × 7 5/8″ × 7 5/8″ or approx 190 mm × 190 mm × 190 mm.
10″ cinder block dimensions
10″ cinder blocks or CMU available in full CMU having length of 16″ long and half CMU of 8″ long.
Dimensions of 10″ full cinder block:- commonly available, dimensions of 10″ full CMU or cinder block are nominally 10 inches wide by 8 inches high by 16 inches long, which is represented in inch as 10 in × 8 in × 16 in or 250 × 200 × 400 in mm (wide × height× length). Their actual dimensions measure 3/8 inch shorter, allowing for mortar joints. Actual dimensions of 10″ full CMU or cinder block are 9 5/8″ × 7 5/8″ × 15 5/8″ or approx 240 mm × 190 mm × 390 mm.
Dimensions of 10″ half cinder block:- commonly available, dimensions of 10″ half CMU or cinder block are nominally 10 inches wide by 8 inches high by 8 inches long, which is represented in inch as 10 in × 8 in × 8 in or 250 × 200 × 200 in mm (wide × height× length). Their actual dimensions measure 3/8 inch shorter, allowing for mortar joints. Actual dimensions of 10″ half CMU or cinder block are 9 5/8″ × 7 5/8″ × 7 5/8″ or approx 240 mm × 190 mm × 190 mm.
12″ cinder block dimensions
12″ cinder blocks or CMU available in full CMU having length of 16″ long and half CMU of 8″ long.
Dimensions of 12″ full cinder block:- commonly available, dimensions of 12″ full CMU or cinder block are nominally 12 inches wide by 8 inches high by 16 inches long, which is represented in inch as 12 in × 8 in × 16 in or 300 × 200 × 400 in mm (wide × height× length). Their actual dimensions measure 3/8 inch shorter, allowing for mortar joints. Actual dimensions of 12″ full CMU or cinder block are 11 5/8″ × 7 5/8″ × 15 5/8″ or approx 290 mm × 190 mm × 390 mm.
Dimensions of 12″ half cinder block:– commonly available, dimensions of 12″ half CMU or cinder block are nominally 12 inches wide by 8 inches high by 8 inches long, which is represented in inch as 12 in × 8 in × 8 in or 300 × 200 × 200 in mm (wide × height× length). Their actual dimensions measure 3/8 inch shorter, allowing for mortar joints. Actual dimensions of 12″ half CMU or cinder block are 11 5/8″ × 7 5/8″ × 7 5/8″ or approx 290 mm × 190 mm × 190 mm.
Conclusion:-
In the US, based on ASTM standard, dimensions of cinder block or CMU are nominally 16 inch (410 mm) long by 8 inch (200 mm) high by 8 inch (200 mm) wide. Their actual dimensions are 3⁄8 inch (9.5 mm) less than the nominal dimensions to allow 3⁄8 inch for mortar joints between blocks in any orientation. Their actual dimension is 7 5/8″ × 7 5/8″ × 15 5/8″.
