Common Misconceptions

"Biax does not comply with Australian standards"

Biax slabs are fully compliant to AS2870, Section 4 and have been third party peer-reviewed by leading Australian structural and geotechnical engineers. Every Biax slab is a bespoke engineered solution using Finite Element Analysis (see details about our Wafflesuite design program).

"The mesh sits too low in the slab and needs to be chaired up”

Biax slabs have been engineered to maximise the strength capabilities of reinforcing mesh in a structural sense. Biax pods are superior at protecting the reinforcing from moisture due to their 2mm thickness of polypropylene plastic construction, unlike polystyrene waffle pods that are manufactured using moisture which is retained within the pod.

"Biax using imported recycled plastic (as opposed to locally sourced) is not helping our Australian waste problems”

Biax pods are manufactured by Holloway Group, a leading manufacturer based in Sydney NSW. Holloway Group specialises in
various construction and materials handling products made from 100% post-industrial polypropylene waste. Recycled polypropylene is not in abundance like other consumer-based ‘soft plastics’ and
therefore up to 80% of Holloway’s Australian leading demand needs to be sourced offshore. It is fully verified and certified for complete proof of origin and raw material make-up.

Frequently Asked Questions

Can I switch out my existing waffle pod floor to a Biax system?

Yes, you can, however, you will need to get an engineer to design the floor specifically as a Biax slab. 

How does Biax compare in cost to polystyrene waffle pods?

For H1 and H2 slab classifications, Biax FoundationsTM are comparably priced or cheaper than standard polystyrene waffle pods.

Can I use normal concrete, or does it need a special mix?

Biax slab designs are based upon a minimum requirement of 20MPa concrete. 

Is it quick and easy to install?

Absolutely! Biax’s lego-like installation method, combined with no cutting of pods and no bar chairs, allows for a significantly faster installation process compared to polystyrene waffle systems.

Does Biax use more/less concrete?

For H1 & H2 soils, concrete usage can be less than a polystyrene alternative providing the site preparation is managed properly and all components placed as drawn. 

Can I have a decorative concrete finish with Biax?

Yes. One of Biax’s biggest advantages over polystyrene is the elimination of shrinkage cracking on the surface. When designed in accordance with our recommendations, polished or burnished concrete finishes are superior using Biax. 

What is the R-Value?

A 300mm standard Biax slab has an additional R-Value of R1.10 (in winter) over a conventional concrete slab on the ground. This includes the use of a reflective damp-proof membrane in lieu of traditional black buildering film (plastic). 

What are the heights of Biax slabs?

Biax slabs are 300mm overall in height for all soil classifications up to H2. This is due to the extra stiffness provided by our 750mm rib centres.