A more serious risk than leaching is presented if CCA-treated timber is burnt in confined spaces such as a domestic fire or barbecue, and the smoke is inhaled.
32.
However, the point will still be raised that if the fungicide treatment is really effective, it should not matter whether or not the treated timber gets wet again.
33.
The road bridge consists of 34 spans supported by 185 treated timber piles ( five timber piles to each pier ), galvanised steel I beams and reinforced concrete deck.
34.
To make the transition from driveway to garage floor smoother, cut a 4 ( MUL ) 6 pressure-treated timber so that it slopes properly, and set it against the concrete.
35.
You can make the border of pressure-treated timbers, 2 x 8s or 2 x 10s, concrete patio blocks, or soldier bricks, i . e . bricks on their long ends.
36.
The APVMA decision to restrict the use of CCA in Australia was a precautionary measure, even though the report found no evidence that demonstrated CCA treated timber posed unreasonable risks to humans in normal use.
37.
These controlled sites handle a range of waste materials potentially more noxious than that posed by CCA-treated timber, e . g . paint-stuffs, car batteries, etc . Today, landfill sites are becoming scarcer and disposal of waste materials is becoming economically unattractive.
38.
But instead of putting the boards directly on the ground, which will make it difficult to keep them straight and true, try this : Put down 4-by-4-inch sleepers, small pressure-treated timbers set about 2 feet apart, and make sure they are level in both directions.
39.
For a raised patio, you can use the patio blocks on their short end, or set pressure-treated timbers ( 6 ( MUL ) 6s or 8 ( MUL ) 8s ) set directly on the ground or 2x6s or 2x8s set flat on the ground; three or four set on top of one another will provide the desired height.
