Retaining wall cost varies by material.
Retaining wall base calculator.
Getting a landscaping estimate will help you plan for the cost of materials and labor to build the retaining wall which will help you save time and money.
When building a retaining wall diy landscapers need accurate estimates on the amount of stone blocks cap stones and gravel needed to complete the project.
Poured concrete is typically the most expensive followed by wood timber and then stones and pavers.
Dig a base trench 24 in.
The retaining wall should be set embedded below grade on a level base of 6 gravel or stone.
600 mm wide the length of the wall the depth of the trench will be 6 in.
Follow the block manufacturer s instructions for wall height limits.
Planning a retaining wall.
25 mm for each 1 ft 300 mm of wall height for the amount or buried block that is needed.
The wall gets its strength from a sturdy base consisting of gravel.
Interlocking concrete blocks are beautiful and designed and structured specifically for use in retaining walls.
Avoid placing the retaining wall where downspouts are pointed to keep standing water from forming inside the wall.
Retaining wall base trench.
We recommend making the base twice as wide as the block depth to account for settling.
Length of the wall in inches x depth of a block in inches x 2 x required depth of the base material in inches required depth of the base material in inches x 0 20 1728 cubic feet of base material.
The calculation below factors in compaction.
Avoid having downspouts pointed at the retaining wall and if it s against the house keep soil and mulch well below the siding.
Preparing the retaining wall base.
150 mm plus an additional 1 in.
More information on retaining walls where the base trench steps up a slope.
See our retaining wall cost guide to find the average price of a retaining wall.
The success of your retaining wall depends on a level base.
The interlocking retaining wall block can be used to build walls up to 24 to 36 inches high depending on the size of the block.
Before building a retaining wall plan it out.
This professional estimator tool can be used to create multiple projects all of which can be edited and updated if circumstances change.
Our easy to use professional retaining wall block calculator was designed to help you estimate precisely how many anchor wall blocks and complementary materials you will need for your next project.
A retaining wall must have the strength to hold back the weight of the soil plants and sometimes small structures behind it.
Block walls usually cost 20 30 per square foot which can vary depending on the type of block used concrete block walls can last a lifetime when installed correctly and add beauty to almost any landscape.