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Masonry Blocks - Dimensions

Concrete Masonry Unit Blocks (CMU) - dimensions.

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Typical Concrete Masonry Units - CMU - dimensions

Standard Blocks

Nominal Size (in)	Actual Size (in)
4 x 8 x 16	3-5/8 x 7-5/8 x 15-5/8
6 x 8 x 16	5-5/8 x 7-5/8 x 15-5/8
8 x 8 x 16	7-5/8 x 7-5/8 x 15-5/8
10 x 8 x 16	9-5/8 x 7-5/8 x 15-5/8
12 x 8 x 16	11-5/8 x 7-5/8 x 15-5/8

Half Blocks

Nominal Size (in)	Actual Size (in)
4 x 8 x 8	3-5/8 x 7-5/8 x 7-5/8
6 x 8 x 8	5-5/8 x 7-5/8 x 7-5/8
8 x 8 x 8	7-5/8 x 7-5/8 x 7-5/8
12 x 8 x 8	11-5/8 x 7-5/8 x 7-5/8

How many masonry units needed? Use this tool to calculate the number of concrete units needed.

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Related Topics

Miscellaneous - Engineering related topics like Beaufort Wind Scale, CE-marking, drawing standards and more.

Related Documents

Brick Densities - Densities of common types of bricks.
Bricks - Quantity and Mortar Consumption - Estimate required quantities of bricks and mortar.
Concrete - Calculating Cubic Volume - Calculating the concrete volume required for an operation.
Concrete - Water to Cement Ratios - Water vs. cement ratio when mixing concrete.
Concrete Columns - Estimate concrete volume required for concrete columns.
Concrete Footing - Estimating concrete continous footing.
Concrete Footings - Volume - Estimate required concrete footing volume.
Concrete Mixtures - Cement, sand and gravel mixtures.
Concrete Properties - Properties of normal strength Portland cement concrete.
Concrete Slabs - Load Capacity - Load capacity of simply supported concrete slabs.
Concrete Slabs - Required Thickness - Required thickness of concrete slabs.
Concrete Slabs - Volume Estimates - Estimate required concrete volume per sq. ft.
Rebar - Weights - Weights of rebar rods - size ranging 1/4.
Smaller Rectangles within a Larger Rectangle - The maximum number of smaller rectangles - or squares - within a larger rectangle (or square).

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