WBPSC AE 2001
⭕ A. Collect wash water from floors, kitchens and bathrooms
⭕ B. Disconnect sullage drain from the main drainage system
⭕ C. Prevent the entry of sewer gases into the house drain
⭕ D. Remove the coarse particles of soot, sand etc. before entering into the building drain
📚 Explanation:
A gully trap is provided outside a building to collect wash water (sullage) from:
• Floors
• Kitchens
• Bathrooms
It serves as an intermediary point before the sullage enters the main drainage system and ensures that solid waste does not enter directly.
A gully trap is provided outside a building to collect wash water (sullage) from:
• Floors
• Kitchens
• Bathrooms
It serves as an intermediary point before the sullage enters the main drainage system and ensures that solid waste does not enter directly.
👉 Therefore, the correct answer is: A. Collect wash water from floors, kitchens and bathrooms
Key Points on Gully Trap:
- Collects greywater (sullage) from kitchens, bathrooms, and floors.
- Prevents solid waste from directly entering the drainage system.
- Located outside the building but near the external wall.
- Ensures hygienic disposal of household wastewater.
