The structural element in the Thermacell system is the concrete in-fill in the polystyrene blocks.

The blocks themselves and any finishes and cladding, are non structural.

Tests carried our by the James Cook University in 1994 and the University of Newcastle in 1991, showed that the behavior of the reinforced concrete filling system is similar to normal reinforced concrete. Consequently AS.3600 'Concrete Structures' can be applied to the design of Thermacell buildings. AS.3700 amd SAA.3700 masonry code can also be referred to for guidance, as it specifically addresses the construction of reinforced concrete cores.

These blocks are also very suitable in heavy cyclonic (Category D regions), earthquake and tsunami prone regions.

NOTE: Concrete cores shown in the pictures below.

To demonstrate the strength of the concrete core of our various block sizes, we stripped away the foam blockwork to show the concrete core.
In actual practice, the polystyrene blockwork is never stripped away as, the polystyrene blockwork encases the concrete core insulating it from heat and cold exchanges and which prevents expansion and contraction in the walls. That is why we do not need expansion joints in any of our walls or buildings.

NOTE: The deep sideways flow of concrete every 250mm in height. This is what gives great sideways strength in our walls which is necessary for long streaches of walls and for retaining walls and swimming pools.

These are key reasons why the Thermacell system is much superior to any other I.C.F. on the Australasian Market