Housing in Southern Africa October 2015

OF IBT s positioned into the formwork prior to erection on site. This system is Agrément Certified. FINNBUILDER

Innovative building technologies require Agrément Certification or National Home Builders Registration Council Rational Design Approval for use in residential housing.

For the walls, a Finnbuilder moving shuttering system is used to make 20 MPa concrete blocks according to a quality management system. Concrete stone, concrete sand, plaster, cement and water are used in different proportions to SABS stan- dards. Mixing is done in a powered 300 litre concretemixer. Handmixing is permissible only for mixing in the case of floating or plastering of walls. The external walls are 220 mm and the internal walls 50 mm thick. Firm hand compaction is carried out in three stages. Instead of brickforce, two bars of 5.6 HTS are required to be used horizontally on alternative rows below window height and above 2.1 m heights. Vertical reinforcing bars are placed both sides of window and door openings. Ring beams of 50 mm deep of 30 MPa are built above window level. Walls are cured by keeping the surfacewet for seven days. Blocks are built withwet joints or othermethods used for dry surfaces. Cement slurry is used on 15 mm plaster applied to both sides of the walls. Foundation trenches, slabs and beams are to the engineer’s design. A conventional roof structure is secured with tie-in wires or straps

Typically, IBT systems have a proven track record and offer numerous energy efficiency benefits including thermal performance, which re- duces energy required to heat homes in winter and keep temperatures cooler in summer, making it comfort- able for the home owner. Get up close and personal with IBT systems - there are a myriad of building systems which are ap- pealing, pleasing and affordable across the entire residential sec- tor, from fully subsidised govern- ment houses to upmarket estates. Fit for purpose - the Hub offers developers, builders, municipalities, metros and housing departments the opportunity to view how the systems perform, both from a scientific point of view and an environmental aspect, as no maintenance has been carried out on the structures since being built.

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MOTLEKAR

FINNBUILDER

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