Question

question 3 (2 points)
expansion fittings for underground runs of direct buried pvc conduit emerging from the ground shall be provided above grade when required to compensate for
o a earth settling
o b earth movement
o c frost heave
o d all of these

Explanation:

Expansion fittings are used to account for various ground - related movements. Earth settling (a) occurs as soil compacts over time. Earth movement (b) can be due to natural geological processes. Frost heave (c) happens when water in the soil freezes and expands, pushing the ground upwards. Since all these factors (earth settling, earth movement, and frost heave) can affect the integrity of the PVC conduit, expansion fittings need to compensate for all of them.

Answer:

d. all of these