# How High Can I Stack Retaining Wall Blocks

Some people might think about how high they can stack their Legos. I want to know how high I can stack my retaining wall blocks. Here’s the thing: You don’t want to build a wall that’s too tall and falls down, or is too wide or not wide enough. You also want it to look good, so it should be proportional with your home and landscaping. But if you’re building a retaining wall—a structure that holds back soil or rock from a building, structure, or area—you may need to build one that’s taller than normal. That means you’ll need to know what kind of block you have and how it stacks up against others on the market so you don’t make any mistakes when planning your project.

## Standard Retaining Wall Block with a Wood Fence.

Retaining wall blocks are 20 inches high, and the standard retaining wall block width is 8 inches. If you have a 4-foot tall fence, you can stack one yard of sand to lay 34 blocks and one yard of gravel to lay 24 blocks. You can stack your retaining wall higher than the standard block size by using a retaining wall block with a slope.

To calculate how many yards of material you’ll need for your project:

1 yard = 3 feet × 3 feet

1 cubic foot = 28 pounds

1 cubic yard = 27 cubic feet

For example, if you want to build an 18-inch tall retaining wall that is 10 feet wide and 100 feet long (0.01 acre), use these formulas:

## The block is 20 inches high, which requires one yard of sand to lay 34 blocks, and one yard of gravel to lay 24 blocks.

If you’re building a retaining wall with the standard 20-inch block, you’ll need one yard of sand to lay 34 blocks and one yard of gravel to lay 24 blocks. The height of your retaining wall will determine how much material you’ll need. For example, if your retaining wall is 5 feet high, it will require five yards of sand and three yards of gravel to fill it up completely.

If you want a steeper slope for the top layer, look for a retaining wall block with an incline built into it instead. This means that there isn’t an even flat surface all around the sides; rather there is an angle pointing upwards towards the topmost edge. These types are often referred as “sloped” or “stepped.”

## You can stack blocks higher than the standard retaining wall block using a retaining wall block with a slope.

You can stack blocks higher than the standard retaining wall block using a retaining wall block with a slope. The slope of the retaining wall block is important because it determines how high you can stack it before it becomes unstable.

To find out how much weight you can safely pile on top of your stacked retaining wall, measure from the ground to where you want your stacked blocks to end. Then, multiply that number by four yards of sand and three yards of gravel (or whatever mixture you have chosen). That will give you your total height in feet so that when stacking a straight retaining wall, each layer should be 4′ shorter than this height (i.e., if your measurement was 10′, then each layer should be 6′ tall). With sloped blocks however, there are no rules about how long or tall they need to be—you just need enough room between each layer for them not to fall over.

## If you change the slope of your stack from vertical to 90 degrees, then you can double your height.

If you want to change the slope of your stack from vertical, then you can double your height. If you rotate your wall 90 degrees, it will be at a 45 degree angle. This means that if a wall is 5 blocks high and has a 1-block base, then it would now be 5 blocks high with a 3-block base (in other words, it’s twice as tall). If instead you added or removed blocks from the side of this stack, that would also affect its slope and therefore its overall height. Another way to change the slope is by changing the length of the wall. Finally, changing whether or not there are joints in between each block will change its slope as well—if there’s no joint at all between two blocks facing one another vertically side by side (they’re just touching), then their “slope” becomes zero because they’re perfectly vertical: no matter how many times I rotate them around 360 degrees nothing changes about these two faces.

## Your new height is four yards of sand to lay 68 blocks and three yards of gravel to lay 48 blocks.

You can double your height using a retaining wall block with a slope.

You need four yards of sand to lay 68 blocks and three yards of gravel to lay 48 blocks.

You need to add reinforcement to the soil to make the wall stronger, but this is not always required if you’re building in loose or sandy soil conditions.

## Weighing Down the Retaining Wall Blocks for a Stronger Wall.

One way to ensure that your retaining wall blocks stay in place is by weighing them down. You can use a variety of materials for this purpose, including sand, gravel and water. If you opt for water, be sure to use a hose that doesn’t leak so that the ground around your retaining wall won’t get excessively wet and create mud puddles.

You may also want to think about adding some additional reinforcement beneath your foundation if it’s not made up of concrete or other heavy material; this will help prevent sinking due to shifting soil conditions over time.

## Reinforced Soil Layers for Even Stronger Walls.

Reinforced soil layers are used to make a wall even stronger. Reinforced soil layers can be made out of concrete, steel or fiberglass. You’ll need to install the reinforcing material in the ground before building your retaining wall—this means digging down at least 12 inches (30 cm). The block will sit on top of the reinforced layer and allow water drainage around its perimeter.

## Not everyone can take that advice, but if you want to go against it, consider the pros and cons first..

The important things to consider first are the soil layers, retaining wall blocks, and reinforcing materials. Not everyone can take that advice, but if you want to go against it, consider the pros and cons first:

Pros of higher stacking heights:

• More usable space for gardening or landscaping at a later date

Cons of higher stacking heights:

• Risk of structural collapse (especially with older bricks) if stacked on their sides rather than standing upright

## Conclusion

Retaining walls are a great way to add beauty and value to your home, but it’s important to understand the rules and regulations that go along with the process. We hope this article has been helpful in explaining how high you can stack retaining wall blocks without compromising on quality (or safety).

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