South African
Wood Preservers
Association
Promoting timber treatment and treated timber products
Tel: 011 974 1061 or E-mail: [email protected]
Website: www.sawpa.co.za
IN SOUTH AFRICA TREATED TIMBER IS BY LAW
REQUIRED TO COMPLY WITH NATIONAL AND
COMPULSORY SPECIFICATIONS AND MUST BEAR
MARKING CONTAINING THE FOLLOWING
INFORMATION
BUYING AND USING
PRESERVATIVE
TREATED TIMBER
?
HOW TO PLANT A POLE
POLES (Metal marker)
ABCTT
SAWN TIMBER (Ink stamp)
457
H5 10 ABC TIMBER H3
ABCTT ABC TIMBER H2
457
H4 10
CHOOSE THE CORRECT HAZARD (H)
CLASS
H6 - High Hazard: Prolonged
immersion in sea water (Marine
piling, jetty cross-bracing, landing
steps, retaining walls etc.)
H5 - High Hazard: Outside in
contact with heavy wet soil or in
fresh water (piling, substructure
for walkways & jetties, vineyards
etc.)
The detail in these diagrams assists
proper drainage of moisture that may be
absorbed by a wooden pole.
A structural engineer must be consulted
for detailed structural requirements.
Poles intended for planting in the
ground must be purchased at required
lengths. Never plant a cross-cut end of
a treated pole or post into the ground
as this will expose the untreated
heartwood to fungal and termite attack
resulting in premature failure.
CROSS CUT ENDS
H4 - High Hazard: Outside in
ground, subject to periodic
wetting and leaching (fencing and
structural posts, landscaping,
stakes, pergolas, etc).
H3 - Moderate Hazard: Outside
above ground, subject to periodic
wetting and leaching (cladding,
decking, stairs, balustrades, log
homes, etc).
H2 - Low Hazard: Inside above
ground, protected from wetting
and leaching (roof trusses,
framing, panelling, laminated
.
All machining, cutting or drilling
of preservative treated timber
should be done prior to preser-
vative impregnation. Areas exposed
after impregnation due to cross
cutting etc., must be treated by
liberally applying a suitable
paint-on or brush-on remedial or
supplemental preservative
(excluding ground contact).