Concrete Block (CMU) Sizes
| CMU Size | Nominal Dimensions D x H x L | Actual Dimensions D x H x L |
| 4" CMU Full Block | 4" x 8" x 16" | 3 5/8" x 7 5/8" x 15 5/8" |
| 4" CMU Half-Block | 4" x 8" x 8" | 3 5/8" x 7 5/8" x 7 5/8" |
| 6" CMU Full Block | 6" x 8" x 16" | 5 5/8" x 7 5/8" x 15 5/8" |
| 6" CMU Half-Block | 6" x 8" x 8" | 5 5/8" x 7 5/8" x 7 5/8" |
| CMU Size | Nominal Dimensions D x H x L | Actual Dimensions D x H x L |
|---|---|---|
| 6" CMU Full Block | 6" x 8" x 16" | 5 5/8" x 7 5/8" x 15 5/8" |
| 6" CMU Half-Block | 6" x 8" x 8" | 5 5/8" x 7 5/8" x 7 5/8" |
| 8" CMU Full Block | 8" x 8" x 16" | 7 5/8" x 7 5/8" x 15 5/8" |
| 8" CMU Half-Block | 8" x 8" x 8" | 7 5/8" x 7 5/8" x 7 5/8" |
What is the size of a 4 inch concrete block?
What is the size of a standard concrete block? The 8 in. x 8 in. x 16 in. concrete block is most commonly used in the construction of concrete walls for Haener Block
What is the size of a concrete block in Canada?
23/03/2020 · The common size of concrete blocks is 39cm x 19cm x (30cm or 20 cm or 10cm) or 2 inch, 4 inch, 6 inch, 8 inch, 10 inch and 12-inch unit configurations. Cement, aggregate, water is used to prepare concrete blocks. The cement-aggregate ratio in concrete blocks is 1:6.
What size concrete blocks do I need for a door?
Concrete block size in cm:- standard size of solid and hollow rectangular concrete block is about 40cm long, 20cm width and their depth as 10cm, 15cm, 20cm, 25cm and 30cm. There is different size and shape of concrete block represented as 10cm × 20cm × 40cm, 15cm × 20cm × 40cm, 20cm × 20cm × 40cm, 25cm × 20cm × 40cm and 30cm × 20cm × 40cm.
What is the size of a concrete block in the Philippines?
29/04/2020 · Aggregate concrete blocks are typically available in two standard face sizes (length x height) of 440 x 215mm and 390 x 190mm. Other face sizes are available to aid manual handling. To obtain the co-ordinating dimensions add the specified joint thickness (normally 10mm) to the height and length of the block.
Why are concrete blocks hollow?
The concrete block is designed so that when the wall or edifice is installed, rebar can be placed within the core of the cinder block to reinforce the structure.
What is concrete block?
Concrete blocks are also called cinder blocks. They are also ordered by the professional code of CMU, or concrete masonry units.
What is a half size concrete block?
Most concrete walls or jobs aren't finished as perfect squares. Aside from the standard full block, there are half sizes. These are measured either vertically or horizontally. These are typically used for lintels, end blocks on walls, design elements or beams. These can have the same type of hollow cores or be u-shaped.
What size are specialty blocks?
Specialty blocks for doors, window trim, rafter and pipe fittings or other building areas are often smaller and solid. They typically run 2 1/4 x 4 x 8 inches in dimension and are used in place of red clay bricks. Advertisement. references.
Why are concrete blocks half sizes?
Concrete blocks also come in half-sizes, which are helpful in reducing the need to cut blocks in the field at corners or the end of walls . The architect should always attempt to design buildings using the nominal dimensions to the nearest half-block size to reduce waste and labor due to cut blocks. The following table provides concrete block sizes ...
What is concrete block?
Concrete blocks, also known as Concrete Masonry Units or CMUs, provide very durable structural and non-structural partitions. They are generally used as a backup wall that gets covered with a finish material or exposed in utilitarian spaces like mechanical rooms or basements. They can be painted to provide a cleaner finish, ...
Which is better, a lighter or a heavier CMU?
Lighter CMUs are less expensive, require less labor to install, and tend to have better fire resistance properties. Heavier units tend to reduce sound transmission, have much higher compressive strengths, and have greater thermal storage capacity; however, they are more expensive and cost more to install.
Can you add pigments to concrete?
Pigments can be added to both the concrete block as well as the mortar. The allows for the block and mortar to blend together or to have a sharp contrast. Keep in mind that there will be a natural variation in the color of the CMUs, even if they come from the same manufacturing batch.
What is ground face CMU?
Also referred to as Ground Face CMU, concrete blocks can be burnished or polished to expose the natural aggregates in the concrete mix. It is important to work with the manufacturer to select appealing aggregate and to test the polishing process to ensure you get the aesthetic you are looking for.
Can you paint a block and mortar?
Therefore, it is important that the architect review at least 3 sample blocks that demonstrate the expected color variation. If the color needs to be consistent or exact, you may consider painting the block and mortar. Painting is generally done on the interior, but can also be accomplished on exterior surfaces.
What is a rake CMU?
Raked CMU. Raked (or Striated) units have vertical rake marks introduced during the molding process. The rake marks are not as deep as the scored or ribbed blocks identified above in the Shapes section, but they do add an appealing texture to the block.
What are the specifications for hollow concrete blocks?
1. General Specifications. Hollow and solid concrete blocks shall be sound and free from cracks, broken edges, honeycombing, and other defects that would interfere with the proper placing of block or impair the strength or performance during construction. 2. Dimensions and Tolerances.
What are the dimensions of a concrete block?
The nominal dimensions of the concrete blocks are given below: Length : 400, 500 or 600 mm.
How long do you keep a block in a curing yard?
Curing and Drying. The blocks shall be cured in a curing yard or in an immersion tank and shall be kept in a moist condition for 14 days. When the blocks are cured in an immersion tank, the water of the tank shall be changed at least every four days.
INTRODUCTION
Concrete masonry is one of the most versatile building products available because of the wide variety of appearances that can be achieved using concrete masonry units. Concrete masonry units are manufactured in different sizes, shapes, colors, and textures to achieve a number of finishes and functions.
UNIT SIZES
Typically, concrete masonry units have nominal face dimensions of 8 in. (203 mm) by 16 in. (406 mm), available in nominal thicknesses of 4, 6, 8, 10, 12, 14, and 16 in. (102, 152, 203, 254, 305, 356, and 406 mm). Nominal dimensions refer to the module size for planning bond patterns and modular layout with respect to door and window openings.
UNIT SHAPES
Concrete masonry unit shapes have been developed for a wide variety of applications. Some common unit configurations are shown in Figure 2. Typically, the face shells and webs are tapered on concrete masonry units.
SURFACE FINISHES
The finished appearance of a concrete masonry wall can be varied with the size of units, shape of units, color of units and mortar, bond pattern, and surface finish of the units. The various shapes and sizes of concrete masonry units described above are often available in a choice of surface finishes.
NOTATIONS
A nw = Normalized web area, in. 2 /ft 2 (mm 2 /m 2)#N#t fs = Minimum face shell thickness, in. (mm)#N#t w = Minimum web thickness, in. (mm)#N#W = Nominal unit width, in. (mm)
