According to NRCS VC 9092, The Compulsory Specification for Preservative Treated Timber, any preservative treated timber product claiming to be preservative treated must be branded as specified in the relevant SANS product standards. An important part of the brand is the Hazard Class, which indicates the service conditions to which the product is exposed and the level of treatment or level of protection that must be applied to the wood. The Hazard Classes have been defined as follows…
The wastewater treatment is performed by three subsequent treatment stages. The effluent from domestic,
agricultural or industrial sources passes a preliminary treatment step where solids are separated out and chemical
treatment is applied if necessary. The secondary treatment consists of Biological Disks and Lamella Separators are
used for final clarification step. Optional advanced treatment can be applied.
Interbuild Africa is dedicated to Africa’s SME building services and construction market. It will celebrate its 50th anniversary when it returns to the Johannesburg Expo Centre at Nasrec, Johannesburg, from 15-18 August 2018.