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Due diligence checklist

Retaining Wall Design: Component Quality is Important

Posted on: April 17th, 2015

Brookwater Crib Wall Project

When a designer issues a design certificate (a Form 15 in Queensland), the design is being certified against a specified criteria, for example AS 4678, Earth Retaining Structures code.

A core requirement of this code is design life; for residential retaining walls it is 60 years.

Warner Lakes Stone Strong Wall

Often overlooked is the supporting criteria that references specific codes. These codes cover the quality and manufacture of the components that make up a particular retaining wall system.

An example is our Concrib Concrete Sleeper Wall System consisting of reinforced concrete sleeper beams and either hot-dipped galvanized steel posts or reinforced concrete posts.

For this system we must ensure that the components are compliant with the relevant codes:

  • AS 3600 for Concrete Structures
  • AS 4678 for Hot-Dipped Galvanizing
  • AS 4100 for Fabricated Steel Structures, and
  • AS 1554 for Structural Steel Welding.

Engineered Concrete Sleeper Wall

Engineered Concrete Sleeper Wall

The certifying engineer should always ensure that the structural design complies with the code, as well as the chain of supply used to fabricate or manufacture the wall components.

Here at Concrib, we operate a Quality Management System compliant with ISO9001:2008. This ensures we can supply all relevant documentation regarding certificates for structural steel, concrete, galvanizing, reinforcement etc.

We are also a Queensland Department of Transport & Main Roads-approved pre-caster of retaining wall products.

This provides peace of mind for both the designer and end user in regards to the retaining wall complying with Australian Standards.

For further details of our due diligence in regard to retaining wall design, call Concrib on 1800 02 1800, email us at admin@concrib.com.au or simply contact us.

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