CMU Walls

Concrete masonry unit or CMU walls will assist it to withstand the waste of time.

CMU walls have a variety of patterns and textures, not only make them engaging choices for exterior and interior walls but additionally dependable choices for a solid foundation.

Concrete blocks are made from cast concrete (Portland cement and aggregate, sand and fine gravel).

Low-density blocks might use industrial waste, such as fly ash or bottom ash as an aggregate.

Functions of CMU Walls:

Concrete masonry units act as bearing wall helps for residential properties or buildings, it helps the vertical loads such as flooring joists, arches, vaults and roof rafters, and horizontal masses like wind and seismic activity.


The majority of buildings presently are constructed using concrete blocks or bricks, which forms the CMU wall.

Similar to stone masonry units, the CMU system heaps together concrete blocks using mortar joints.

However, some CMUs are mortar much fewer systems that fit into one another through a sequence of interlocking tongues and grooves.


CMU Walls Composition Details:

The units forming the wall can both be made out of precast concrete blocks or cast-in-place concrete blocks.

These blocks are available a range of shapes including stretcher blocks, header blocks, bond beam blocks and corner blocks.

Precast concrete blocks are manufactured offsite and transported to the construction site for assemblage.

Cast-in-place concrete blocks are poured and cured using steam on the site.

Blocks are often made hollow to permit the insulation.

Along with concrete, CMU walls can comprise of metal, plastic foam and other composite materials for various architectural designs.

For example, CMU blocks are sometimes pressed into metal moulds throughout construction.

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Advantages of CMU Walls:

  1. Concrete masonry units are bigger than conventional bricks, it’s cheaper to put a CMU system.
  2. Galvanized steel reinforcements strengthen CMU walls, helping it to bear more weight without cracking.
  3. CMU wall has an excessive tolerance for heavy loads, permits it to help a stone going through, different bricks, plaster and tile constructing components.
  4. CMU wall are additionally useful in areas that have extreme climates such as hurricanes and tornadoes.
  5. Furthermore, the durability of CMU systems extends the lifetime of buildings and minimizes the necessity for constant maintenance.

Disadvantages of CMU Walls:

  1. CMU walls soak up important amounts of moisture.
  2. CMU wall is often covered with a protective glaze or weatherproofed to stop water penetration.
  3. CMU systems are heavier than wooden or steel and lack flexibility for wall with completely different shapes and dimensions.
  4. Concrete blocks also occupy large amounts of space, since their low thermal resistance value makes them difficult to insulate.
  5. Finally, hiring contractors may be costly depending on the geographic area.

Also, read 1. Retaining Wall 2. Partition Wall 3. Cavity Wall

Frequently Asked Questions:

What does CMU mean?

concrete masonry unit.

What is the difference between cinder block and concrete block?

Cinder blocks are hollow rectangle-shaped structures while concrete blocks are flat constructions made of steel, wood, or cement.

Are CMU walls load bearing?

Yes, they are used to form a load-bearing wall or an interior partition between spaces within a building.

How thick is a CMU wall?

A 6 “CMU is nominally 6” deep, while a 10 “CMU is nominally 10” deep.


Walls made of concrete masonry unit (CMU) are standard-sized rectangular blocks commonly used in building construction.


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