An important consideration when building with timber is predicting how long the structure will last. Whilst insects, decay or rotting organisms and marine borers can all attack wood, some timber species have the ability to resist attack better than others. The natural durability of a species to resist attack by wood destroying organisms is an indication of how long that timber will last when it is exposed to a defined set of exposure conditions without any additional preservative protection. The natural durability of timber species varies, even so within the wood from the same species of tree, depending on whether its sapwood or heartwood.
Understanding the markings on treated timber
A guidance note outlines the markings required on treated timber products in accordance with South African Standards SANS 1288, SANS 457-2/3, and SANS 753/4. These standards mandate specific information to be included in the marking, such as a unique treatment plant identifier or trademark, product certification mark from a third-party certification body, SANS standard number indicating compliance, hazard class indicating treatment level, and manufacturing year or month/year for different types of poles.
The “Understanding Hazard Classes” guidance note explains how timber is treated according to hazard classifications (H Class) based on its intended end use and level of risk exposure, with classifications defined in SANS 10005 and minimum requirements provided in SANS 1288.
Understanding Timber Preservation
Understanding Timber Preservation, a guide to timber and its preservative treatment against biological degradation.
KHA VHA RENGE BALAGA/THANDA DZO ?ODZWAHO MUSHONGA DZO MAKIWAHO/TALIWA NGONA
KHA VHA RENGE BALAGA/THANDA DZO ?ODZWAHO MUSHONGA DZO MAKIWAHO/TALIWA NGONA
REKA FELA DIKOTA TŠE DI ŠOMILWEGO TŠA GO NETEFATŠWA TŠEO DI NAGO LE MASWAO AO A NEPAGETŠEGO
REKA FELA DIKOTA TŠE DI ŠOMILWEGO TŠA GO NETEFATŠWA TŠEO DI NAGO LE MASWAO AO A NEPAGETŠEGO
THENGA KUPHELA AMAPHOLI EZINGODOAQINISEKISIWE FUTHI AQUKETHE IZIMPAWU EZIFANELE
THENGA KUPHELA AMAPHOLI EZINGODOAQINISEKISIWE FUTHI AQUKETHE IZIMPAWU EZIFANELE
THENGA KUPHELA IIPALI ZAMAPLANGA EZIQINISEKISIWEYO EZINEEMPAWU EZICHANEKILEYO
THENGA KUPHELA IIPALI ZAMAPLANGA EZIQINISEKISIWEYO EZINEEMPAWU EZICHANEKILEYO
Tshireletso Ya Mapolanka Ka Dibaballi Le Molao
Tshireletso Ya Mapolanka Ka Dibaballi Le Molao
Kalafo Ya Legong Le Molao
Ukunakekelwa Kwepulangwe Nomthetho
Ukunakekelwa Kwepulangwe Nomthetho
Mulayo Na Tsireledzo Ya Mabulannga
Mulayo Na Tsireledzo Ya Mabulannga
Ukhuselo Lwamaplanga Ngezilondolozi Nomthetho
Ukhuselo Lwamaplanga Ngezilondolozi Nomthetho
Houtbehandeling en die wet
Timber Treatment & the Law In South Africa there are two regulations applicable to preservative-treated timber.
BUY ONLY CERTIFIED TREATED TIMBER POLES THAT CARRY THE CORRECT MARKINGS
BUY ONLY CERTIFIED TREATED TIMBER POLES THAT CARRY THE CORRECT MARKINGS
