Do I need a retaining wall design and permit?
Only when constructing on or near site boundary for any height of retaining wall and only when constructing a retaining wall 1m or more in height.
What is a segmental block?
A dry stack modular interlocking concrete retaining wall block, that is very flexible and comes in a range of colours, textures and shapes and can be used in numerous applications.
What is a gabion?
A pre-made steel wire flexible mesh cage that is laced together on site and then filled with rock to form a durable basket as a retaining wall or as free standing structure which comes in various sizes and can be used in numerous applications.
Do I always require a concrete footing?
No, usually a crushed rock levelling pad would suffice for segmental blocks and hard natural ground surfaces for gabions.
How high can a segmental retaining wall be built, without soil reinforcement?
Segmental retaining wall blocks can be constructed usually to a height of 1.2m without any soil reinforcement, obviously higher retaining walls can be built with soil reinforcement.
Do I require drainage behind the retaining wall?
Yes, as drainage is one of the most important elements in any retaining wall construction with also an appropriate AG pipe properly connected to a legal stormwater system.
What is geogrid?
A geogrid is an open mesh grid used in soil reinforcement for permanent and temporary retaining wall construction which comes in various strengths for different loading conditions.
What is Welded mesh?
A pre-made steel wire rigid mesh cage that is laced together on site and then filled with rock to form a durable basket as a retaining wall or as free standing structure which comes in various sizes and can be used in numerous applications.
In addition to the above questions and answers, Ground Tech would be more than pleased to offer professional advice and answer any additional questions our customers have..