29 / 68
5
OF IBT
s
positioned into the formwork prior
to erection on site. This system is
Agrément Certified.
FINNBUILDER
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
Innovative building technologies
require Agrément Certification or
National Home Builders Registration
Council Rational Design Approval for
use in residential housing.
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.
Continued
▶▶▶
FINNBUILDER
MOTLEKAR