Question

what type of trap is allowed by most plumbing codes?
p - trap
s - trap
double trap
drum trap
bell trap
question 4
what are the implications of a vertical tail piece for a fixture that is too long?
clogging of the trap
siphoning of the trap
difficulty of access for service
freeze up of the trap
effective venting

Explanation:

1. For the first question, P - traps are commonly allowed by most plumbing codes because they are effective in preventing sewer gas from entering buildings while allowing proper drainage and are less likely to cause problems compared to other types.
2. For the second question, a long vertical tail - piece for a fixture can cause siphoning of the trap. Siphoning occurs when the water flow creates a vacuum that pulls the water out of the trap, which is supposed to act as a barrier against sewer gas.

Answer:

1. P - trap
2. siphoning of the trap