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On 9 September 2011,
the Minister of Trade and Industry, Dr Rob Davies, amended the National
Building Regulations and Building Standards Act (Act 103 of 1977),
to introduce requirements for energy usage in buildings. This will
come into effect within two (2) months from the date of the publication
of the notice, i.e. 9 November 2011.
In accordance with SANS 10400 Part XA: Energy usage in buildings,
one of the aspects to be considered in the building envelope requirements
The requirements for fenestration are as follows:
1. Buildings with up to 15 % fenestration area to nett floor area
per storey comply with the minimum energy performance requirements.
2. Buildings with a fenestration area to nett
floor area per storey that exceeds 15 % shall comply with the
requirements for fenestration in accordance with SANS 204.
3. All fenestration air infiltration shall
be in accordance with SANS 613.
The Standards can be purchased on line from www.sabs.co.za