Which type of trap is shown by the figure below?
A. S- trap
B. P- trap
C. Q-trap
D. R-trap
Answer:A
Which type of trap is shown by the figure below?
A. S- trap B. P- trap C. Q-trap D. R-trap
Explanation: In domestic applications, traps are typically U, S, Q or J-shaped pipe located below or within a plumbing fixture. An S-shaped trap is also known as an S-bend. It was invented by Alexander Cummings in 1775 but became known as the U-bend following the introduction of the U-shaped trap by Thomas Crapper in 1880. The new U-bend could not jam, so, unlike the S-bend, it did not need an overflow. The most common of these traps in houses is referred to as a P-trap. It is the addition of a 90 degree fitting on the outlet side of a U-bend, thereby creating a P-like shape.