Question
5. Ground -contact-grade pressure -treated lum- ber has a preservative retention of __ a. 0.25 pounds per cubic foot b. 0.40 pounds per cubic foot c. 0.45 pounds per cubic foot d. 0.60 pounds per cubic foot
Answer
4.2
(259 Votes)
Rowena
Master · Tutor for 5 years
Answer
b. 0.40 pounds per cubic foot
Explanation
## Step 1This problem pertains to the properties of materials, specifically, the properties of ground-contact-grade pressure-treated lumber. The term "preservative retention" refers to the amount of preservative substance that the lumber can hold or retain. ## Step 2In the context of treated lumber, the preservative serves to resist damage from insects, fungus, and moisture. The problem asks us to identify the correct preservative retention amount for ground-contact-grade pressure-treated lumber.## Step 3This value will specify how much preservative the lumber can hold per cubic foot, making it more resistant to potential damage. The unit of measurement being used is pounds per cubic foot.#