# Blog

## How do you calculate retaining wall? The number of retaining wall blocks is calculated using the following formulas: number of rows = wall height / block height (rounded up if not a full number) number of columns = wall length / block length (rounded up if not a full number)

## How many blocks do I need for a retaining wall calculator?

To find the total number of blocks needed for the wall, multiply the number of columns by the number of rows; don't forget to subtract a row if using cap blocks.

## How do you calculate material for a retaining wall?

To estimate how many blocks you'll need per row, divide the total length of the wall by the length of the block. To figure out how many rows you'll need, divide the ideal wall height by the height of the block. Make sure to account for the first row being half-buried.

## How do you calculate wall blocks?

Measure the length and height of the block in inches and then substitute the values in the equation square feet of block = (length of block x height of block) / 144. For example, a standard cement block measures 16 x 8 inches, so it covers 0.89 square feet — (16 x 8) / 144 = 0.89.

## What size are retaining wall blocks?

For heavy-duty walls up to 30 ft. tall, go with full-size blocks. They're 16 to 18 in. long x 6 to 8 in.

## How many blocks do I need calculator?

After you have found the square footage of both your wall and your block, determining the number of blocks you need is as simple as dividing the wall square footage by the block square footage. If you're using a standard 16″ x 8″ x 8″ block, find the number of blocks needed by dividing the wall square footage by 0.89.

## How do you calculate retaining wall stones?

Use This Simple Formula

Stones can also be measured and sold by the ton. Use this equation to figure out how much stone you need to build a stone wall: (length in feet x width in feet x height in feet) / 27 = cubic yards of stone needed.
Apr 27, 2019

## How do you calculate landscape blocks?

To calculate the number of landscape blocks needed for the retaining wall, figure out the length of the landscape blocks in feet. For example, if you are using 6-inch blocks, the blocks are 6/12 or 0.5 feet. Now, divide the perimeter by the length of the landscape block in feet.Oct 24, 2020

## How do you calculate concrete for a retaining wall?

Enter Width and Length in feet, and thickness in inches. Formula: V = W x L x T.

## How do I calculate how much stone I need for a retaining wall?

Use This Simple Formula

Use this equation to figure out how much stone you need to build a stone wall: (length in feet x width in feet x height in feet) / 27 = cubic yards of stone needed.
Apr 27, 2019

### What is a retention wall?

• Definition. A retaining wall is a structure designed and constructed to resist the lateral pressure of soil, when there is a desired change in ground elevation that exceeds the angle of repose of the soil. A basement wall is thus one kind of retaining wall. But the term usually refers to a cantilever retaining wall,...

### How much is a block wall per square foot?

The material cost to install a cinder block wall is typically between \$3 and \$5.50 per square foot, which includes the cost of the blocks themselves, mortar and structural reinforcement.

### Does a 2 foot retaining wall need drainage?

These walls need a drainage system regardless of the wall height. If there are poor draining soils such as clay behind the wall, there needs to be drainage incorporated the wall system. Clay when wet is very weak, so it is essential to provide a way for water to escape from behind the wall.Oct 11, 2020

### How much should a retaining wall cost per foot?

On average, building a retaining wall costs \$23 per square foot. For the more budget-conscious, retaining wall prices average at \$19 per square foot. On the upper end, retaining wall costs are around \$50 per square foot.Sep 8, 2021

### How much is a retaining wall per linear foot?

Generally speaking, the California average cost for a retaining wall is anywhere between \$300-\$900 per linear foot.Apr 16, 2021

### How do you calculate block wall?

• Divide the width of the wall in inches by the width of the block and round up, this is the number of columns. Divide the height of the wall in inches by the height of the block and round up, this is the number of rows. If the top row will be a cap block then the number of cap blocks needed is the number of columns.

### How many CMU blocks are in a square foot?

• Remember in the first example, the retaining wall was 10 feet high and 100 feet in length. All you do is multiply L x H = SF in this example; the answer is 1,000 square feet (SF). To find the number of 8" x 8" x 16" block required, you must determine the square footage of one CMU which is .89 SF per block.

### How many concrete blocks needed?

• Estimate the number of concrete blocks needed by multiplying the area by 1.125. For example, if the area is 120 square feet, you need about 135 concrete blocks. This is an estimate for the standard block dimension, which is 8 inches by 16 inches.

### How do you calculate the number of retaining walls?How do you calculate the number of retaining walls?

We understand, however, that you might be in the mood to do the maths yourself, and hereby present you with all the necessary equations! The number of retaining wall blocks is calculated using the following formulas: number of columns = wall length / block length (rounded up if not a full number)

### How many blocks do I need for a retaining wall?How many blocks do I need for a retaining wall?

To estimate the total number of retaining wall blocks, you’ll first need to calculate the number of rows and columns needed for the wall. Start by measuring the wall’s width and height. Most experts suggest embedding the first course of blocks below grade about 10% of the wall height to support it correctly.

### How do you calculate the amount of blocks for a wall?How do you calculate the amount of blocks for a wall?

To calculate the amount of blocks you require for the entire wall YY x ZZ = Amount of blocks you require eg. Heathstone Grande Block dimensions: 440mm long x 162mm high x 270mm deep. Wall to be 25 Lineal Metres and 1metre high. Blocks per lineal metre 1000mm/ 440mm (length of block.) = 2.28

### How to build a retaining wall?How to build a retaining wall?

It is crucial for keeping the wall steady, as well as making sure it does not get eroded by water. It is recommended do use a granular material such as gravel, which is what we chose for the retaining wall calculator. Declare the backfill area's height, length and thickness. Height and length typically correspond to the wall's height and length.

### How do I calculate the thickness of a retaining wall?

Base width = 1/2 to 1/3 of the height of the wall. Base thickness = 1/8 of the height of the wall but not less than 12 inches. Stem thickness = 6 inches + ¼ inch for each foot of wall height.Jan 13, 2014

### How do you calculate the volume of concrete?

Use the formula.

Calculating the volume for concrete requires using three dimensions: length times width (which is area) times the height (thickness) or L x W x H. If you are using feet as your standard unit of measurement, this formula will give you the volume of concrete in cubic feet.

### How much rock do I need for retaining wall?

Measure the width of the wall, measuring from the back of the blocks to the dirt wall. Determine the height of the wall. Multiply the length, width and depth of the wall. Divide the number by 27 to get the cubic yards of gravel required for your wall.Sep 26, 2017

### How do you price a retaining wall?

On average, building a retaining wall costs \$23 per square foot. For the more budget-conscious, retaining wall prices average at \$19 per square foot. On the upper end, retaining wall costs are around \$50 per square foot.Sep 8, 2021

### How is total height of retaining wall provided?

For level top surface, the base width of wall is determined in the same way as the cantilever type retaining wall. However, in counterfort type wall the base width is kept from 0.5H to 0.7 H, in which H is the total height of the retaining wall.

### How thick should a retaining wall footing be?

To construct a footing for a dry-stacked retaining wall, excavate a trench that is 5 to 7 inches deep plus 1 inch for every 8 inches of planned wall height. Lay 4 to 6 inches of course gravel in the trench and tamp it down, checking for level regularly and making adjustments as needed.

### What is the maximum height of a retaining wall?

Most retaining walls, whether load-bearing or not, average between 3 and 4 feet in height. As a general rule, you do not want to build any sort of structure over 4 feet in height without including some type of structural support within.

### How to build a retaining wall?

• Choose gravel that has stones sized between 1/2-inch and 3/4-inch.
• Fill the trench with a 2- to 3-inch layer of gravel.
• Use a rake to ensure the stones are evenly distributed.
• Tamp the base with your tamper to make sure it’s evenly compacted.

### How to build a stackable block retaining wall?

• Stackable Concrete Blocks. Stackable stones are made of concrete,with a decorative finish on the front and a lip on the back. ...
• Materials Needed. Estimating the number of blocks you’ll need is tough. ...
• Layout and Planning. ...
• Digging the Trench. ...

### How to design a retaining wall structural?

• Select the retaining wall location. Minimize soil excavation and backfill. ...
• Determine retaining wall height and geometry. Calculate the retaining wall height at its tallest position. ...
• Evaluate structural requirements. If geogrid is required,see the geogrid charts for approximate grid length.
• Calculate the total wall structure. ...