Retaining Wall Calculator

Retaining Wall Calculator - Easily compute the number of blocks and the cost of building a retaining wall."

What is a Retaining Wall?

A retaining wall is a structure designed to hold back soil or rock from a building or other structure. It is commonly used to prevent erosion and manage grade changes in landscaping. Retaining walls come in various materials including concrete, stone, and timber, and are essential for creating level areas on sloped terrain.

Cap Row

Will there be a cap row?

Wall Dimensions

Height:

Length:

Backfill

Backfill Area Thickness:

Backfill Area Length:

Backfill Area Height:

Costs

Single Wall Block Price:

Single Cap Block Price:

Gravel Price (per unit weight):

How to Use Retaining Wall Calculator

To use this calculator, enter the dimensions of your retaining wall and block sizes, and specify if a cap row is included. For backfill calculations, provide the thickness, length, and height of the backfill. Enter the prices of wall blocks, cap blocks, and gravel. Click "Calculate" to get the number of blocks, volume and weight of gravel, and total costs. Use "Clear" to reset all inputs.

Formulas for Retaining Wall Calculator

Number of Rows: n_rows = h_wall / h_block
Number of Columns: n_columns = l_wall / l_block
Number of Blocks: n_blocks = n_columns × n_rows (or n_blocks = n_columns × (n_rows - 1) for cap row)
Volume of Gravel: V_BF_gravel = t_BF × l_BF × d_BF
Weight of Gravel: w_BF = D_gravel × V_BF

FAQ

1. What is a retaining wall used for?

A retaining wall is used to hold back soil or rock from a building or other structure. It helps prevent erosion, manage grade changes, and create level areas on sloped terrain.

2. How do I choose the right block size for my wall?

The block size depends on the wall's height and length. Larger blocks are suitable for taller walls, while smaller blocks may be used for shorter walls or detailed work. Ensure blocks are strong enough to withstand the load.

3. What materials can be used for retaining walls?

Common materials include concrete, stone, brick, and timber. The choice of material depends on aesthetic preferences, structural requirements, and budget. Concrete is often used for its durability and strength.

4. How do I calculate the amount of gravel needed?

Measure the backfill area’s thickness, length, and height. Multiply these dimensions to get the volume of gravel needed. Ensure the thickness is at least 12 inches to provide adequate support and stability.

5. Can I build a retaining wall myself?

Yes, but ensure you have the necessary skills and tools. Building a retaining wall requires careful planning, measurement, and construction techniques. For large or complex walls, consider hiring a professional to ensure structural integrity.