The wood preservative standards are organised as specifications
for treatment of timber to be used in specific "Hazard Classes" - a
series of biological hazards for different end-use situations.
H4 - Sawn timber, roundwood and plywood used in ground
contact in non-critical situations. CCA is used in New Zealand for
wood in this category.
In CCA treatment, copper is the primary fungicide, arsenic is
a secondary fungicide and an insecticide, and chromium is a
fixative which also provides ultraviolet (UV) light resistance.
Recognized for the greenish tint it
imparts to timber.
The cut ends of any pole or pile should not be put into the
ground even after a supplementary treatment has been applied to the
cut surface.
Notes for handling CCA treated timber:
- Reduce contact by wearing gloves,
goggles and a dust mask
- Don't burn off-cuts or cook with them
- Dispose of waste in an approved landfill.
- Wash your hands before using the toilet, or eating.
- Wash work clothes separately.
- Ventilate work spaces as much as you can.
- Care should be taken on choosing the correct hazard
rating.
- Working with solvent damp timber is not advised, solvent
damp timber should be allowed to properly dry off before
use.
Solve the puzzle from the Notes:
SOUTH
- 1 = 4 - 4
- 2 = 2 +
3
- 3 = 6 -
3
- 4 = 2 +
8
- 5 = 3 -
6
- 6 = 4 +
6
- 7 = 6 -
2
EAST
- 1 = 9 - 3
- 2 = 2 + 6 -
1
- 3 = 7 -
3
- 4 = 4 -
3
- 5 = 2 -
2
- 6 = 6 +
7
- 7 = 2 +
3
- 8 = 10 -
1
Retaining 1st to solve...
Retaining 1st to find...
funkymunkyzone and Punga
and Paua