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Feature walls such as retaining wall blocks and concrete are advantageous and can be built in residential, commercial and public places. Retaining wall builders follow local building regulations to ensure that they are compliant with relevant Standards and Regulations and rigidly constructed.

Many property owners can benefit from building a retaining wall. Aesthetic-wise, retaining walls are typically used in garden and landscaping features. In structural terms, these walls firmly hold the soil to reduce potential cases of erosion or collapse.

Here are the common advantages of a successful retaining wall project:

  • Retaining walls prevent flooding and erosion

    Heavy downpours come at any time and may cause flooding. Drainage holes are usually integrated into the footings of the retaining wall to reduce the possibility of erosion.

    Building a retaining wall in areas with sloping terrain will also help to restrain the pressure caused by constant soil movements.

  • Retaining walls improve the visual appeal of your home

    However small or large, a retaining wall project increases the aesthetic aspect of your outdoor space.

    Whether you are looking to build brick or concrete retaining walls, your preferred style will affect the outcome of the construction. Choosing a design that visually attracts and complements your property increases aesthetic value.

  • Retaining walls are low maintenance

    A well-structured retaining wall is durable and easy to maintain. It is designed to withstand harsh climate conditions and usually requires a few costly repairs.

Hiring a seasoned retaining wall builder is imperative to get the best value for your investment and construct a long-lasting structural support.


Different Types of Retaining Walls

There are distinct types of retaining walls which vary in terms of pressure-bearing functions and objective of construction.

Piled walls

Piled retaining walls can be built with vertical posts or reinforced concrete piles depending on what you prefer. The vertical structure is usually circular in shape and is situated on the ground to offer stability in excavated areas.

The height of your piled wall will vary based on its use. This type of wall is typically constructed in confined spaces and soft-soiled areas.

In some construction, cables are used to link the anchor and the wall together and plant them into the soil for stabilisation purposes.

Cantilever walls

Cantilevered retaining walls are L-shaped footings that rigidly support and stabilise soil conditions. Concrete footings are generally required to be installed below to help in strengthening and securing the base.

This type of wall is often built and projected backward to form a strong foundation for compacted soil and divert the pressure downwards.

Unlike gravity walls, cantilevered walls can use lesser volumes of materials (e.g. concrete) in building the actual wall as the base slab helps to reduce weight and pressure.

Gravity walls

Gravity walls are the most basic type of retaining walls. They rely heavily on their own weight to bear earth pressures.

If you’re building a small garden or landscaping wall, the mass of materials (e.g. stone, brick) used will determine the durability of the wall. They are much thicker than other types of walls.

Gravity retaining walls can stand without the use of reinforced components or anchors.

Anchored walls

Anchored walls are suitable for loose soil and are typically constructed in tight spaces. This type of retaining wall is often built thinner than other types like gravity walls.

The use of cable anchors is required to link the top of the wall to the bottom. Concrete fillers are then poured onto the ground to provide a strong anchor.

If you’re looking at constructing high wall structures, anchored retaining walls are an option.

Find a supplier that distributes locally manufactured materials with features specific to that location. In this way, you can be sure of the quality of materials and prevent extensive structural repairs.


Factors that Impact the Cost of Building a Retaining Wall

There are a variety of factors that determine the cost of a retaining wall project. Consider the following aspects to carefully plan your budget.

Materials

Retaining walls can be built in a wide selection of materials such as bricks, stones, timber and concrete. For example, timber retaining walls make use of wood or steel posts to support the weight of the structure.

Brick retaining walls may also incur larger fees due to the number of bricks required.

Wall dimension

The length and height of the retaining wall will influence how much you will be charged for labour and materials. Usually, both are priced by square metres.

The longer and higher the structure, the more excavation work will be required. If structural elements such as reinforcement are necessary to build a concrete retaining wall, the cost will increase.

Soil condition

The condition of your soil affects how retaining wall builders will price the job. If the ground is steep, it may need more work to level and stabilise the area prior to construction. Installing additional footings or stumps attracts increased costs.

Access difficulty

Working in confined spaces may have an implication on the cost of building a retaining wall. Transporting materials and equipment might complicate the process, thus incurring extra rates.

Factors such as site preparations, additional decorative finishes, Council permits and your location may impact the overall cost. Always clarify payment terms with a local builder to ensure that pricing details are properly laid out in writing.

A retaining wall builder must be licensed and insured to avoid dispute. Building regulations may vary from state to state so ensure that your tradie is highly adept at managing retaining wall projects.

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