by Fran

What does "CMU" mean? I have seen it on sets of plans before and i just wondered what it means. I'm new to the trade just starting to get into it. I am young but want to get more involved in the bidding stage rather than the physical stuff so I'm looking into all these phrases so I can learn and achieve my goals. Thanks guys I,ll be checkin back.

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Oct 09, 2013
Any kind of Tools you can buy online
by: Anonymous

Nice sharing, if you want to buy any kind of hand tools . You can buy from

Apr 07, 2012
CMU= Concrete Masonry Unit
by: Anonymous

Hello Fran
Your gonna do great in this trade, cause you ask questions.
A block, could be 2" 4 6. 8 10 12 14? 16" wide, made of concrete, half and half(concrete/cinder ash) or cinder block.

Your just getting started, so why not check out, read all the links, download all the free stuff, pay special attention to the Guarantees. This will help you to BE THE BOSS someday if you so choose.

Thank you
Charlie Cummins

Oct 11, 2010
unit masonry
by: Anonymous

What is CMU? Well, Concrete unit masonry has become a standard building material. Concrete blocks create structures that are economical, energy efficient, fire-resistant, and involve minimal maintenance. If you are interested in more information, I'd recommend checking out the Sweets Network from McGraw-Hill, the company I work for. They have a great directory of manufacturers and suppliers. You can even check out CAD details from their site.

If you are looking to advertise your website, then contact me. Please do not use html here.
- thanks management

Aug 04, 2008
by: Anonymous

Concrete masonry unit

A concrete masonry unit (CMU) [US], concrete block, cement block or foundation block [US] is a large rectangular brick used in construction. Concrete blocks are made from cast concrete, i.e. Portland cement and aggregate, usually sand and fine gravel for high-density blocks. Lower density blocks may be produced by using cinders as an aggregate, and are known as cinder blocks [US], breeze blocks [UK] or clinker blocks (if bottom ash or clinker is used as an aggregate). Concrete blocks that do not contain cinders are often mistakenly called cinder or breeze blocks in everyday speech. Lightweight blocks can also be produced using aerated concrete.

Concrete blocks may be produced with hollow centres to reduce weight or improve insulation. The use of blockwork allows structures to be built in the traditional masonry style with layers (or courses) of overlapping blocks. Blocks come in many sizes. In the US, the most common size is 8 in × 8 in × 16 in (20 cm × 20 cm × 41 cm); the actual size is usually about 3/8 in (1 cm) smaller to allow for mortar joints.

Cinder blocks differ from concrete blocks in their aggregate content. Cinder blocks are made from coal cinders and Portland cement. Cinder blocks are lighter and, depending on aggregate availability, may be cheaper than concrete blocks of the same size.

The term breeze block, commonly used in the UK, derives from the use of breeze (coal cinders or cinder dust) as an aggregate. A breeze block is therefore equivalent to a cinder block.

Breeze blocks are no longer used in the UK[2] because of their low compressive strength.[citation needed] Despite this, the term is still widely used to refer to concrete blocks more generally.

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