top of page
  • Writer's pictureEngineering Plans Team

Structural engineering of Australian retaining wall, inspection requirements, construction drawings

Updated: Jun 11, 2023

Retaining walls are structures used to provide stability for earth or other materials and are commonly used to hold back soil banks. The structural engineering design of retaining walls varies across Australia. A geotechnical assessment is required for all retaining walls especially in clay sites. Drainage considerations are undertaken by the design structural engineering to ensure long term performance in retaining walls.

Are you planning to build a brick fence and require certified engineering drawings? Engineering Plans Australia can assist with certified structural engineering drawings for projects in Perth, Adelaide, Melbourne and Sydney. Structural engineering certification for other brick wall configurations including retaining walls or constructing the brick wall on top of a limestone retaining wall can be engineered specific to each site.

Retaining walls are often built in conjunction with a masonry fence. A brick fence can be a wonderful addition to a property and there are a wide range of options and materials available for constructing the fence. While clay brick and limestone blocks screen walls are common, concrete blocks wall are also increasing in popularity. In some situations, the fence can be integrated with a brick or limestone retaining wall.

For more information regarding the structural engineering and construction requirements for brick or masonry fences, retaining walls or other home improvement structures, check out our latest blog article and email your architectural drawings and our team will assist you with a quotation for the engineering drawings.

Types of retaining walls

Gravity structures - limestone retaining walls

The gravity wall depends upon its weight to retaining soil. Limestone retaining walls are a type of gravity walls commonly used in the Perth Region. The interlocking blocks that are used to construct the limestone retaining wall can be either natural blocks or reconstituted limestone blocks.

Limestone retaining walls can be used in a wide range of applications and have a long durability. The type of retained soil is especially useful if required to supports imposed actions such as light vehicle surcharge loading.

Cantilever walls

A cantilever retaining wall often is often constructed using reinforced concrete and utilises cantilever action to retain the mass behind the wall from assuming a natural slope. Stability of this type of retaining wall is achieved from the weight of the soil on the heel portion of the base slab.

The design and construction of retaining walls will depend on the application, site classification and budget.

Panel and post retaining wall

Also known as sleeper retainer walls, usually consist of concrete posts or steel beams cast into a concrete footings. The retaining is achieved with concrete panels inserted between reinforced concrete post or galvanised I beams.

This type of retaining wall is easy and quick to install in sand sites. Also this type of retaining wall isn't recommend within 1km from the ocean and to ensure durability, is it critical that the steel I-beams are galvanised.

Concrete Block Retaining Wall Systems

Retaining wall using concrete masonry blocks are straightforward to construct and since there is a wide range of colours and textures available, there are a range of options for retaining walls, planter boxes and feature walls. Concrete masonry retaining walls are typically constructed in Australia using 150 series blocks or 200 series blocks.

The concrete masonry cores are steel reinforced and all cores are filled with grout.

Structural Engineering Process

At Engineering Plans Australia, we have made the structural engineering and certification process easy by standardising the engineering details for a wide range of retaining wall for Australian conditions.

Engineering Plans Australia are a Registered Building Practitioner Victoria (RPBV) and can provide the structural engineering certification form projects in the Melbourne Area.

What is the cost of certified engineering drawings?

​Retaining wall type


Limestone retaining wall engineering

from $220

Concrete (Besser) blocks retaining wall engineering

from $220

Concrete panel and post retaining wall or sleeper retaining walls

from $220

Brick retaining wall with concrete filled cavity

from $220

Send us an enquiry via our website and upload your site plan and architectural drawings and our team will review the documentation provided and confirm the cost for the engineering services.

Our online store contains standard engineering details that can be purchased in minutes. With every new project, we have a quality assurance process in place to ensure that the standard engineering detail is suitable for the particular location and wind loading.

Structural engineering drawings from $198? Engineering Plans Made Easy for Melbourne, Perth and Sydney.

  • Limestone Retaining Wall Engineering details

  • Brick Fence Construction details

  • Steel/Timber Patio Engineering details

  • Shed engineering details

  • New Home Engineering*

  • Swimming Pools

  • Structural Inspections*

*WA and Victoria only

Engineering drawings in 5 easy steps:

Step 1: Engage an architect or building designer to produce architectural design drawings for the proposed structure;

Step 2: Obtain advice from the relevant local government authority in relation to the building permit application;

Step 3: Complete the website contact form & upload your site plan and architectural drawings;

Step 4: Our team will review the documentation provided and confirm the cost for the engineering certification;

Step 5: Order the standard structural engineering drawings online and receive your certified structural engineering drawings.

Please visit our website or online store for more information or send as a message ousting the website contact form.

Engineering Plans Australia

Adelaide | Melbourne | Perth | Sydney

10,030 views0 comments


bottom of page