Question

Choose the correct statement(s) from the following:

• A. Waste water from sinks, baths, etc. enters through the top inlet of a gully trap, while foul water from sweeping of rooms or courtyards enters from side inlet.
• B. Anti-siphon traps have a reduced water-way at the inlet side, while the outlet being larger prevents the pipe from filling full and causing siphonic action.
• C. Intercepting traps prevent foul gases from street sewer to enter into the house.
• D. P, Q and S traps are classified according to their shape.

Hint:

Drainage traps are classified based on their purpose: gully for floor waste, anti-siphon to avoid siphonic action, intercepting to block sewer gases, and P/Q/S traps by shape.

Answer 1

The Correct Option is A, B, C, D

Statement A: A gully trap accepts wastewater from baths, sinks, and washbasins via its top inlet. Foul water from courtyards or floors connects through the side inlet. This statement is accurate.

Statement B: Anti-siphon traps feature a narrower inlet waterway and a larger outlet. This design prevents the pipe from completely filling with water, thereby preventing siphonic action. This statement is accurate.

Statement C: Intercepting traps are situated at the junction of the house drain and street sewer. Their function is to prevent foul gases from the sewer entering the house drainage system. This statement is accurate.

Statement D: P-traps, Q-traps, and S-traps are designated by their shapes, which correspond to the letters P, Q, and S respectively. This statement is accurate.

\[\n\boxed{\text{All statements (A), (B), (C), and (D) are correct.}}\n\]