Question

Which is the most correct answer?

Select one:

a. Borate wood preservatives are less toxic to humans than Chromated Copper Arsenate (CCA) but they are also water soluble and should be kept away from direct contact with water

b. Pressure treated wood can have a service life 5 to 10 times that of untreated wood

c. High temperature kiln drying is an effect method if killing fungi but it deterioration can start again if the wood becomes re-infected

d. All of the above

e. None of the above

Answer 1

(d) all of the above options are correct.

* Borate wood preservatives are less toxic to humans although it should be kept away from water as it is water soluble and if such water is taken then it may cause some health problems like diarrohea, naussea, stomach ache etc.

As we know Arsenic Come under toxic metals may cause cancer. So CCC is more toxic than borate wood preservatives.

* Untreated wood can be damaged anytime by fungi, fire, water etc. Pressure treated wood offer more resistance than untreated wood.

* Various fungi are heat sensitive can be killed under high temperature but if reinfection occurs can deteriorate wood again. As it is not possible make anything safe through out it's whole life. When effect of treatment reduces over the period of time reinfection starts and so the deterioration.

PLEASE RATE THE ANSWER.