A concrete masonry unit (CMU) is a standard size rectangular block used in building construction. Those that use cinders are called cinder blocks in the United States, breeze blocks in the United Kingdom, and hollow blocks in the Philippines. In New Zealand and Canada they are known as concrete blocks or more ...
Comment: ASTM C-90 is the standard of masonry production specifications in the United. States. With the approval of ACI 530.1-88 specifications and the issue of ASTM C-90-91, there is one major specification change to note. In the past, block compressive strength (psi) was based on gross area requiring an average.
Concrete masonry Unit (CMU) sizes for standard CMUs - includes both nominal and actual dimensions. Covers concrete block sizes from 4" CMU through 12" CMU.
An information series from the national authority on concrete masonry technology . NCMA TEK 2-1B (replaces TEK 2-1A). 1. TYPICAL SIZES AND SHAPES OF. CONCRETE MASONRY UNITS. TEK 2-1B. Unit Properties (2017). INTRODUCTION. Concrete masonry is one of the most versatile building products available ...
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Three terms are used in referring to the overall dimensions (width, height, and length) of concrete masonry units (cmu): specified, actual, and nominal. Specified dimensions are those ... the measured dimensions of the unit. ASTM Standards allow the actual dimensions a permissible variation from the specified dimension.
size are manufactured to specified face dimensions within tolerances specified in applicable referenced ASTM specification. A. Manufacture concrete masonary units specified dimensions of 3/8 inch less than nominal widths by nominal heights by nominal lenghts. 2. Provide special shapes where indicated and as follows:.
Coursing Tables, Metric Shapes and Sizes. 3.1 The “Anatomy” of a Standard. Concrete Block Masonry Unit. A perspective view of a standard, hollow concrete block ma- sonry unit is shown in Figure 3.1, with associated section cuts provided in Figure 3.2. These figures illustrate key elements of a concrete block masonry unit ...
Nominal Dimensions, Actual Dimensions. 2″ x 8″ x 16″ Solid, 1 5/8″ x 7 5/8 ″ x 15 5/8″. 2 1/4″ x 8″ x 16″ Solid, 2 1/4″ x 7 5/8″ x 15 5/8″. 3″ x 8″ x 16″ Regular, 2 5/8″ x 7 5/8″ x 15 5/8″. 3″ x 8″ x 16″ Solid, 2 5/8″ x 7 5/8 ″ x 15 5/8″. 4″ x 8″ x 16″ Regular 3 Core, 3 5/8″ x 7 5/8″ x 15 5/8″.