To do so, you need to multiply the wall's height and width: wall size = wall height * wall width To calculate the number of blocks, you need to divide the total area of the wall by the area of a single block: number of blocks needed = wall area / block area block area = block height * block width
How to choose retaining wall block?
How to Choose Retaining Wall Block Colors Take the time to research the different retaining wall block colors. Go to the building supply store and get retaining wall block color samples. Select the color that matches the materials and plants of the surrounding area. Blend the wall block colors or create a contrast.
How many retaining wall blocks do I Need?
Using the sample numbers above, we would need 67.2/0.4167 = 162 blocks. To account for breakage, you should buy several more. Estimate the amount of gravel needed to pack the trench at the base of the retaining wall.
How to calculate retaining wall?
where:
- H: Height of the retaining wall
- L: Width of the base
- D: Thickness of the base
- B: Width of the toe
- C: Stem thickness at the bottom
- T: Stem thickness at the top
How to build a reinforced concrete block retaining wall?
Step 3: Install Base Course
- Begin at the lowest wall elevation.
- Place all units top side up with the raised front lip facing up and in the center of the base material.
- Check and adjust for level and alignment of all wall blocks. ...
- Make minor adjustments by tapping the AB units with a dead blow hammer or by placing up to 0.5 in. ...
How many retaining wall blocks do I need for a circle?
Step 1: Place 14 Blocks in Circle You could use a string and two pencils to mark out a more perfect circle, but I found it easiest to just lay the blocks in the best circle I could. Then, use a shovel or a stick to mark the outer and inner edges of the blocks.
How do you calculate the square footage of a retaining wall?
Multiply the length and adjusted height measurement to determine the square footage of the retaining wall. Multiply the square footage number by 144 to find the size of the wall in square inches.
How many landscape blocks do I need?
To estimate how many blocks you will need, determine how many blocks you will require per row. To do this, divide your project's total length (retaining wall, fire pit, walkway) by the block's length. Next, determine how many rows you'll need by dividing the project's height by the height of the block.
How deep should a 3 foot retaining wall be?
The general rule of thumb is to bury about one-eighth of the height of the wall. For example, if your wall will be three feet (36 inches) tall, the first course of blocks should start five inches below soil level.
How many blocks do I need calculator?
Calculate the area of a block by multiplying its height and width. Divide your wall area by the block area. The result is the total amount of blocks you need.
How do you calculate block wall?
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 I calculate how much retaining wall I need?
Multiply the length of the wall (in feet) by the height of wall (also in feet) to get the square footage of the outside face of the wall. Then, multiply 1.12. This allows for having 12% of the wall's height under the surface of the ground to give the wall more stability.
What do you put under retaining wall blocks?
Use crushed gravel to fill in the back and sides of your blocks. Backfill helps with water drainage. Compact the backfill before starting on the next row of blocks. You should clean and sweep the top of each row before placing the next one.
What is the cheapest retaining wall block?
What is the cheapest retaining wall material?Treated pine and is the least expensive material. ... Hardwood is more expensive than treated pine. ... Railway sleepers are another - slightly more expensive - option and are built to withstand ground and water contact.Concrete sleepers are more expensive.More items...•
How far apart should posts be for retaining wall?
We've done the research and have the best answer for you. Retaining wall posts should be at least three feet apart. The distance can be slightly longer or shorter if it works better with your measurements. However, you shouldn't go more than seven feet apart to make sure your wall is sturdy enough.
Does a 2 foot retaining wall need drainage?
Every retaining wall should include drainage stone behind the wall. Though it is a good idea to install a drainage pipe on all walls, there are certain situations where a perforated drain pipe is absolutely necessary.
Do I need rebar in a retaining wall?
Retaining walls must be stronger than freestanding walls. Insert rebar in the footing when you pour it; this should be done at every three blocks or at intervals specified by your local codes.
Retaining Wall – Definition
A retaining wall is an artificial construction that you can build to retain and maintain the land’s natural slope. You can use a retaining wall to create flat ground or create a more functional space.
Retaining Wall – Formulas
You can calculate the number of retaining wall blocks using the formulas:
Retaining Wall Estimation Tips
There are various ideas on how you can use retaining walls. You can use retaining walls to provide a flat surface for your garden or landscape by retaining soil, and other materials. This retaining wall element design is often used to create outdoor living spaces.
Retaining Wall – Table of Pricing
When building a retaining wall, it is necessary to consider all the retaining wall costs. The average price is $20 to $50 per square foot to build a retaining wall. When installing a concrete retaining wall, the average length is 50′ and costs between $4,000 and $10,000.
Retaining Wall Calculator – How to Use?
With the help of this retaining wall calculator, you can easily reach your budget. The calculator is easy to use, and now we will explain how.
Retaining Wall Calculator – Example
The following example will explain how you calculate the required data when building a retaining wall.
Retaining Wall Calculator – Real-world Usage
With our Retaining Wall Calculator you can estimate the amount of material you need. You can use retaining walls to retain soil, sand, gravel, and other loose materials. The design of retaining walls can be in many different ways.
How to calculate the number of blocks needed for a concrete wall?
To do so, you need to multiply the wall's height and width: To calculate the number of blocks, you need to divide the total area of the wall by the area of a single block: Then you need to calculate your concrete block costs;
How to use the concrete block calculator?
Our calculator is simple and intuitiv e to use. To estimate everything your project needs, just follow these instructions:
How many mortar bags do you need to bond 100 concrete blocks together?
Have a look at the mortar estimation field. On average, it takes three standard mortar bags to bond 100 concrete blocks together. Please note, that this is a rough estimation, and you might need to calculate it separately using factors such as mortar type.
How many square feet are in a 16x8 block wall?
With these dimensions, it will cover 10 * 50 = 500 square feet. If you use a standard 16" x 8" block, the area of a single block is 128 square inches, and you will need 563 concrete blocks, as 500ft² / 128in² = 72,000in² / 128in² = 562.5 (rounding up to the nearest whole number).
How many blocks are in a mortar bag?
When it comes to estimating the mortar needed, a good rule of thumb is that three standard bags will typically cover 100 blocks. To calculate the number of such bags, you need to divide the number of blocks by 33.3: mortar bags estimation = number of blocks needed / 33.3.
How big should a boulder be for a wall?
Now you can choose your boulder size based on the following recommended minimum boulder sizes: 6″-12″ boulders for walls up to 2.5′. 12″-18″ boulders for walls up to 4′. 18″-24″ boulders for walls up to 6′. 24″-36″ boulders for walls over 6′.
How to find the average height of a wall?
First, enter the length and average height of the wall you are building. The average height can be found by first taking several measurements every few feet. Then, add these up and divide by the total number of measurements taken.
What to put under a boulder wall?
Also remember to add compacted gravel under the first course if you have silty/clay soils or soft soils that don’t compact well. This will give the boulder wall a solid foundation to sit on. It will also protect against freeze/thaw heaving.
Is it better to build a boulder wall or a boulder wall?
When constructing a boulder wall, remember that bigger is better for boulder size. Using bigger boulders will lead to a much longer lasting wall. For further knowledge on constructing boulder walls, click here to see the most common reasons why boulder walls fail.
Can you use boulders as a retaining wall?
Plant gaps between boulders to improve wall durability. Boulder walls can be a beautiful and durable solution as a retaining wall or purely for decorative purposes. When constructing a boulder wall, remember that bigger is better for boulder size.
Retaining Wall – Definition
Retaining Wall – Formulas
Retaining Wall Estimation Tips
Retaining Wall – Table of Pricing
Retaining Wall Calculator – How to use?
Retaining Wall Calculator – Example
- The following example will explain how you calculate the required data when building a retaining wall. Data that you have: 1. project has a cap row, 2. length is 40 feet, 3. height is 15 feet, 4. 15×20 inches of a block, 5. the standard backfill thickness is 15 inches, 6. prices are $7 per block of retaining wall, 7. $3 per pound of gravel You can ...
Retaining Wall Calculator – Real-World Usage