MAXRaft® TC2 Piles & Expansive Soil

By MAXRaft©
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MAXRaft® TC2 Piles & Expansive Soil 320/400mm is our solution for an insulated slab being built on less stable ground, in particular, the TC2 type ground encountered in Christchurch or when moderately or highly expansive soils are encountered. MAXRaft is engineered to be seismically stronger in earthquake conditions compared to traditional concrete foundations.

Details
  • Category
    Floor Slabs
General
  • Country of origin
    New Zealand
  • Type of use
    Commercial and Residential
Features

• Suitable for TC2 ground

• Increased thermal efficiency

• Less time required on site

• Site-specific engineering

• Reliable, proven construction details

• Easily meets the R-value requirements of the building code.

Engineering (PS1) for consent can be arranged through MAXRaft®, we work with a group of engineers who are experienced in designing MAXRaft® foundations and can pre-empt council queries. Local authorities may request a PS4 for engineering sign off, any suitably qualified local engineer can inspect the MAXRaft®. and supply the PS4.

Designs - This our standard design, as each site is engineered on a site-specific basis we are unable to provide additional engineering details with this design at this point.

Performance

The perimeter footings and load bearing thickenings from our standard remain similar, ensuring that your perimeter and load bearing walls can be supported while maintaining the thermal envelope around the house.

The infill area of the slab is changed somewhat, engineered to provide stiffened ribs throughout the floor with the additional advantage of maintaining a thermal break around the foundation rather than transferring heat directly to the ground between the ribs where it is lost, as is the case with traditional waffle floors.

Each of these components combine to give you a an R value that easily meets the requirements of the building code. 

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MAXRaft offer a range of fully insulated and thermally broken concrete slabs with R-values that easily meet the requirements of the building code.   

The team at MAXRaft is passionate about creating healthier, warmer and more energy-efficient homes. Historically New Zealander's have concentrated on insulating ceilings and walls, however, up to a third of a building’s heat can be lost through an uninsulated floor. Up to 80% of heat loss can be through the external edges of the slab. 

MAXRaft products combine strength with durability. The slab encases the perimeter and puts a continuous layer of MAXRaft between the ground and concrete, unlike traditional waffle slabs. This insulation has a dramatic effect on the surface temperature, significantly increasing the comfort of the home and the health of the family, all the while lowering the cost of heating. Iso-thermal analysis conducted in line with ISO 10211 comparing MAXRaft to a traditional waffle slab showed MAXRaft is significantly warmer, providing comfortable warmth even in the middle of winter climates. 

Fully engineered, MAXRaft has solutions for most types of ground (incl TC1/2/Exp. soils, piles), residential (single storey, multi-level or simply an extension) and commercial build while providing construction R-values between 2.5 and 5 depending on the project. Installation is quick, practical and efficient with site-specific insulated slabs delivered to the site in pre-cut segments. Founded in Queenstown, with representatives and install teams throughout New Zealand, MAXRaft is committed to providing well-insulated homes for its customers.

When considering Homestar or Passive House certification a MAXRaft slab is the perfect place to start.

View our BRANZ Appraisal.