New concrete forming and screeding system
The Beast is an innovative screeding and forming system for concrete slabs on grade and elevated slabs.
The unique patented system solves a problem and serves two purposes, says Lance Canute, product development manager of CANZAC.
The first is a fixed elevation point-topoint screeding system eliminating the need to recheck levels, which is needed when using free-screeding methods currently used in the concrete industry. This means designers, engineers, architects, contractors and occupiers can expect improved finish floor levelness (FF and FL numbers).
Secondly The Beast is an edgeforming system especially beneficial for slab on grade applications. These use the Beast Foot with steel nail stakes fixed to the formwork with duplex nails or duplex screws in a vertical position, and the other steel nail stake to the second Beast Foot on a 45° angle for the form bracing. This eliminates form deflection from the lateral pressure of the concrete.
According to Canute the Beast is a real game changer because the company has been looking for a system like this for years that would enable contractors to set form work without having to puncture vapour barriers or DPC or DPM. Punching the vapour barrier or any penetration through the vapour barrier is concerning for the designer, Canute says, because the subsequent moisture can migrate through the concrete slab and can lead to failure of floor coverings.
“Designers must be very aware of this liability, especially nowadays as most adhesives are water-based and don’t need a lot of moisture migrating through the concrete slab to cause delamination of floor coverings or even worse, water vapour, contaminants and soil gases entering the building envelope, leading to moisture getting into wall framing and linings which create a very unhealthy environment for the occupiers of the building.”
Canute also says the engineering behind the Beast screeding and forming system is very innovative, very smart and cost effective. It is made from three components derived from 100 percent virgin polypropylene. The Beast foot with the engineered peel and stick adhesive that is adhered to the vapour barrier, is the only expendable part.
The Beast post – a round threaded profile with slab elevation markings that fits into the Beast foot – can be cut down to suit slab thickness from 100mm to 300mm, can be removed and is reusable.
The adjustable cap that screws into the Beast post has 50mm of adjustability and coloured yellow with antennas so is easily seen at the finish floor level (FFL). Both the adjustable cap and the post can be removed from The Beast foot at the same time and reused.
The Beast will save time in all screeding and forming operations because there is no need to drive pegs or nail stakes to brace formwork or boxing, with the added value of a vapour barrier safe application that will mitigate liability for designers and contractors, advises Canute.
Applications where the Beast could be used include industrial, commercial, retail, slabs on grade, elevated decks and multistory buildings, reservoirs, wastewater treatment plants, bridge decks, tunnels, shotcrete applications, and anywhere where screeding or concrete needs to be within elevation tolerances, or concrete cover to reinforcing steel is critical, Canute says, which is probably without doubt all the time.
The Beast system won the “Most Innovative Product” at the World of Concrete 2016 in Las Vegas.