What influences retaining wall design?

Having a thorough site plan that’s drawn to scale can help nourish construction and design challenges and supply an accurate benchmark for Assessing your project. This may become your working or approved plans for the project.

Your local council will have a copy of your lot survey on file. The survey won’t only identify property lines, but will give an accurately scaled template of your site to aid with planning.


Buried utility lines aren’t only harmful, they may keep you from finding your landscape project in which you want. Call the local utility companies and have these lines indicated.


Building permits may be required if the retaining wall is over a certain height. Check to view what your local council requires. An approved engineered wall layout or an pre-engineered alternative from us could be required in order to acquire a building permit. Contact us for additional information.


It is always nice (and smart too) to let your neighbours know about your project before beginning.

Clay soils put more stress on a wall than sandy soils since they hold moisture. Identify the lands in your site.

To identify the lands, a great test is to get a small handful of the soil in the palm of your hand and squeeze it to form a ball. Have a sample from at least 12 in.

Clay Soils

Clay soils retain moisture that can add pressure behind the walls. Typically most soils will be classified as clay and may be used on your project.

Sandy Soils

Sandy soil, won’t stick together since they’re granular without a silty fine particles. These soils allow for good drainage and are best for building walls.

Organic Soils

Organic soils will stick together but won’t hold when the strain is released. NEVER use organic soils to construct the wall.

Existing trees and other vegetation can be designed to the wall design as needed. New plantings can be added to improve the complete landscape. Any plantings directly behind the wall have to be done carefully as to not disturb any reinforcements which might have been added while the wall was constructed.

The Base or Foundation

You have to build on solid ground. If your site contains soft, wet soils, or if the area has been formerly excavated, the base’s soil might have to be replaced with great foundation materials and firmly compacted.

Determining Wall Height

Determining retaining wall height

A detailed comprehension of the site elevations and grade varies are essential to determine wall heights. Starting at the lowest point, mark your grade changes in 0.3 m (1 ft) increments on the strategy. Sketch from the drainage patterns.

Cut and Fill
Cut Site

Fill Site

If building on a mountain or a slope, the placement of your wall will determine how much dirt will need to be removed or brought onto the site

A cut site is where you cut into the hillside and remove the soil. You’ll have to decide beforehand what will be done with the extra soil.

A fill site is where you may need more lands to fill in behind the whole wall. You’ll have to plan ahead to have great backfill materials brought onto the site.