Cinder Block Dimensions – What You Need to Know

Cinder Block Dimensions

What are cinder blocks? They are just like concrete blocks, but the difference is that in concrete blocks, fine gravel takes a large percent of the content while coal cinder takes a large percent of the content. Before now, cinder blocks were more popular and commonly used for construction projects like garden walls, fire pits, benches, and lots more, but now, the cinder block has been replaced by concrete blocks because of the low production and availability of cinder blocks. Cinder blocks are lighter in weight when compared to concrete blocks, and they are therefore not considered strong enough to bear loads, but they may be replaced by concrete blocks in fences and walls.

Types of Cinder Blocks

Types of Cinder Blocks

There are different dimensions of cinder blocks depending on what they are to be used for. In this article, we will discuss the various types of cinder blocks that we have, their dimensions, and their functions or uses.

One of the types of cinder blocks to be discussed is the Special Blocks. These blocks are often made in the 8 inches by 8 inches by 16 inches dimension. This type of cinder block is made mainly to serve as end blocks at corners or doorways. The surface is smooth at one end, and some styles have offset to allow window sash or door jamb installation.

Another type of cinder block is the hollow core cinder block. This cinder block is always either 2 core or 3 core. This means that in a cinder block, there can either be 2 or 3 holes in the block. The direct opposite of this type of block is the solid cinder block. This particular block, unlike the one aforementioned, does not have cores in them. They are mostly used to cover the top of the walls.

Dimensions of Cinder Blocks

Although most cinder blocks are almost the same size, there are some exceptions which are the square cinder blocks. These square cinder blocks are used as pavers. Although almost all cinder blocks are said to be in the dimensions 8 by 8 by 16 inches by laymen, their actual measurement differs slightly. The real dimensions for an 8 by 8 by 16 inches is actually 7 5/8 by 7 5/8 by 15 5/8. The dimension is done this way in order to allow the mortal that goes in between them, which is always 3/8 inches thick. It also makes it easier for mansions to estimate how many blocks will be needed.

The dimensions of the cinder block are majorly divided into 5 dimensions. These are the 4 inches dimension, the 6 inches dimensions, the 8 inches dimension, the 10 inches, and the 12 inches dimensions.

4-inch Cinder Block

4-inch Cinder Block Cinder Block Sizes
Solid Pier 3 5/8 inches by 7 5/8 inches by 3 5/8 inches
Solid Pier 7 5/8 inches by 7 5/8 inches by 3 5/8 inches
Solid Pier 7 5/8 inches by 11 5/8 inches by 3 5/8 inches
Solid Pier 3 5/8 inches by 15 5/8 inches by 3 5/8 inches
Solid Pier 7 5/8 inches by 15 5/8 inches by 3 5/8 inches
Hollow Pier 3 5/8 inches by 15 5/8 inches by 3 5/8 inches
Hollow Pier 7 5/8 inches by 15 5/8 inches by 3 5/8 inches
Hollow Pier 7 5/8 inches by 17 5/8 inches by 3 5/8 inches

The four inches dimension cinder block is called this because they generally have a width of 4 inches. It is further divided into 8 different dimensions. This set of cinder blocks have different dimensions. One of the dimensions in this category is the 3 5/8 inches height by 7 5/8 inches length by 3 5/8 inches width. This is one of the nominal sizes of the solid pier. Another dimension of solid pier cinder block is one with 7 5/8 inches height by 7 5/8 inches length by 3 5/8 inches width. Also, there is a solid pier of dimensions 7 5/8 inches by 11 5/8 inches by 3 5/8 inches. There is another type of pier cinder block with the dimensions of 3 5/8 inches by 15 5/8 inches by 3 5/8 inches. The last solid pier in the 4 inches category has a dimension of  7 5/8 inches by 15 5/8 inches by 3 5/8 inches.

Still, in the 4 inches category, we have different dimensions of hollow pier cinder blocks. The first one in this category is the one with dimensions 3 5/8 inches by 15 5/8 inches by 3 5/8 inches. We also have another size of the hollow pier cinder block, which has dimensions 7 5/8 inches by 15 5/8 inches by 3 5/8 inches. Similar to this is a cinder block with dimensions 7 5/8 inches by 17 5/8 inches by 3 5/8 inches.

6-inch Cinder Block

6-inch Cinder Block Cinder Block Sizes
Hollow Stretcher 3 5/8 inches by 15 5/8 inches by 5 5/8 inches
Hollow Corner Sash 7 5/8 inches by 7 5/8 inches by 5 6/8 inches
Solid Corner Sash 7  5/8 inches by 15 5/8 inches by 5 5/8 inches
Solid Pier 7 5/8 inches by 17 5/8 inches by 5 5/8 inches

Moving to the 6 inches cinder block, we have several different dimensions in the 6 inches category. The first dimension is the 3 5/8 inches by 15 5/8 inches by 5 5/8 inches. The cinder blocks in this dimension have different names assigned to them. These names depend on the type of design that can be found on the body of the cinder block and what it is used for. We have the hollow stretcher, the hollow corner sash, the solid corner sash, and the solid pier in this category. Another dimension of the cinder block is the one with a height of 7 5/8 inches, a length of 7 5/8 inches, and a width of 5 6/8 inches. Another dimension in the 6 inches category is the 7  5/8 inches by 15 5/8 inches by 5 5/8 inches. This also has about 4 different designs under it, and they serve several purposes in construction. We also have the 7 5/8 inches by 17 5/8 inches by 5 5/8 inches.

8-inch Cinder Block

8-inch Cinder Block Cinder Block Sizes
Hollow stretcher, Hollow corner sash 3 5/8 inches by 15 5/8 inches by 7 5/8 inches
Hollow Corner Half 7 5/8 inches by 7 5/8 inches by 7 5/8 inches
8-inch Type 7 5/8 inches by 15 5/8 inches by 7 5/8 inches
8-inch Type 7 5/8 inches by 17 5/8 inches by 7 5/8 inches

The 8 inches category also has about 4 different dimensions under it. We have the hollow stretcher and hollow corner sash of dimensions 3 5/8 inches by 15 5/8 inches by 7 5/8 inches. Also, there is the hollow corner sash half that has a dimension of 7 5/8 inches by 7 5/8 inches by 7 5/8 inches. Also in the 8 inches category is the 7 5/8 inches by 15 5/8 inches by 7 5/8 inches dimension. The last cinder block in the 8 inches category is the width dimension of 7 5/8 inches by 17 5/8 inches by 7 5/8 inches.

10-inch Cinder Block

10-inch Cinder Block Cinder Block Sizes
Solid pier, the solid corner sash, the hollow stretcher, the hollow pier, and the hollow corner sash 3 5/8 inches by 15 5/8 inches by 9 5/8 inches
10-inch Type 1 7 5/8 inches by 15 5/8 inches by 9 5/8 inches
10-inch Type 2 7 5/8 inches by 17 5/8 inches by 9 5/8 inches
10-inch Type 3 7 5/8 inches by 7 5/8 inches by 9 5/8 inches

In the 10 inches category are the solid pier, the solid corner sash, the hollow stretcher, the hollow pier, and the hollow corner sash with a dimension of 3 5/8 inches by 15 5/8 inches by 9 5/8 inches. Other dimensions in the 10 inches category are the 7 5/8 inches by 15 5/8 inches by 9 5/8 inches dimension, 7 5/8 inches by 17 5/8 inches by 9 5/8 inches dimension, 7 5/8 inches by 7 5/8 inches by 9 5/8 inches.

12-inch Cinder Block

12-inch Cinder Block Cinder Block Sizes
12-inch Type 1 3 5/8 inches by 15 5/8 inches by 11 5/8 inches
12-inch Type 2 7 5/8 inches by 15 5/8 inches by 11 5/8 inches
12-inch Type 3 7 5/8 inches by 7 5/8 inches by 11 5/8

Lastly, there is the solid pier, solid corner sash, hollow corner sash, hollow double sash, hollow pier, hollow stretcher. The 12 inches category has several dimensions under it. Among these are the 3 5/8 inches by 15 5/8 inches by 11 5/8 inches dimension, the 7 5/8 inches by 15 5/8 inches by 11 5/8 inches dimension, and the 7 5/8 inches by 7 5/8 inches by 11 5/8 inches dimension.

When getting a cinder block, the dimensions might not be written in the manner in which it was written above, but it might be written in whole numbers. It is important to take into account the space for mortar that is between the blocks when calculating the number of cinder blocks you want to use.

Other Things to Note about Cinder Blocks

The weights of cinder blocks vary, and it is dependent on the size and dimension of each cinder block. However, a high-density cinder block will weigh more than a low-density cinder block. A high-density cinder block is made of cast concrete with sand and gravel, while a low-density cinder block is made of cast concrete with industrial waste like bottom ash and fly ash.

It is good to note that cinder blocks can be recycled if they are still in good shape. That is, there is no sign of wear or tear on the cinder block. However, if a cinder block should have traces or signs of wear and tear, it is hazardous to reuse the cinder block. Rather it will be advised that the damaged cinder blocks should be crushed and mixed to create a new cinder block. Although on a good day, a cinder block has a lifespan of about 100 years, this lifespan can be shortened due to exposure to harsh conditions and improper care of the cinder block.

For preventive measures against harsh conditions, it is advisable that acrylic paint and a weather-resistant latex should be used to paint the cinder block. This can also be used for decorative purposes. Cinder blocks are not waterproof, so in other to prevent leakage and damage to the cinder block so measures can be taken.

Making cinder blocks is pretty easy and does not require hard labor, as most people think. If it is a high-density cinder block that is being made, all that is required is that the cast concrete and the aggregate (which comprises sand and fine gravel) be mixed, and then the mixture is taken to the cinder making machine, which then pours the mixture into the cinder block mold. On the other hand, if the cinder block to be produced is a low-density cinder block, then the only difference in the procedure is the aggregate mixture which is the bottom ash or the fly ash.