Timber standards provide guidelines for forestries, government bodies, and businesses to ensure efficient timber production across South Africa.
Various standards and stakeholders in South Africa work together to create effective policies, aiming to cultivate, harvest, and produce timber in ways that encourage economic growth while safeguarding the environment and preserving natural resources.
What Are South African National Standards (SANS)?
South African National Standards (SANS), set by the South African Bureau of Standards (SABS), are designed to maintain the quality and consistency of goods and services.
The SABS, founded under the Standards Act of 1945 and now operating under the Standards Act of 2008, maintains a comprehensive repository of over 6,500 national standards that span various sectors, including not just forestry but also energy, water, and telecommunications.
SANS Regulations for Treated Timber Poles
Treated timber poles in South Africa are regulated by specific SANS standards, which ensure consistency in their manufacture, treatment, and use nationwide.
Standards for Timber Poles and Droppers
SANS 457-3 specifies requirements for hardwood structural poles, agricultural poles, fencing poles, round droppers and guardrail posts. The poles are intended for the erection of fences and vine trellises, for general use in orchards and structural purposes. The droppers are intended for fencing, and the guardrail posts are intended for the erection of steel guardrails at the sides of roads.
Standard for Preservative-treated timber
SANS 1288 sets nationally accepted levels of preservative treatment of timber for a classified range of hazard conditions depending on intended application. Hazard classes can range from H2 for internal use to H6 for marine use.
Standards for the Preservative Treatment of Timber
SANS 10005 gives guidance on required timber treatment processes and preservatives and to establish a common basis of methods and criteria for the timber industry.
Standards for Transmission Poles
SANS 754 specifies the requirements for eucalyptus poles, grown in Southern Africa, and that are intended to be used as upright supports for communications systems, and as upright supports, cross-arms and spacers for power distribution lines.
Common Timber Treatments
Two primary treatments are used for utility poles: Chromated Copper Arsenate (CCA) and Creosote.
CCA Treatment
This industrial wood preservative, developed in 1933, protects timber from decay and pests. Known as "pressure-treated wood," CCA is legal in South Africa and has been deemed safe for use.
Creosote Treatment
Creosote, an oil-based preservative, is effective against fungal and insect threats, with treated wood often lasting up to 25 years. Creosote-treated poles are also flame-resistant and can be applied through DIY methods or professional pressure-treatment processes.
What Is Responsible Forestry?
Responsible Forestry manages forest development, growth, and health to benefit both landowners and industries sustainably.
The South African government has outlined practices for sustainable forestry that unify conservation, commercial, and community forestry goals. This approach ensures that timber production not only complies with SABS standards but also aligns with best practices for environmental stewardship.
By working together, forestries, manufacturers, the SABS, and the South African Wood Preservers Association (SAWPA) can develop policies that protect forests and support biodiversity conservation.
