For rooftop grease drainage, which combination describes the required characteristics of the collection container?

For rooftop grease drainage, which combination describes the required characteristics of the collection container?

• A. Grease-Tight, Rainproof
• B. Liquidtight, Rainproof
• C. Welded, Waterproof
• D. Closed, Rainproof

Answer: (D)

The main idea here is that a rooftop grease collection container must be protected from the elements and completely enclosed. Being closed means there are no openings for contents to spill out or for air and odors to escape, while rainproof ensures rain cannot enter and dilute or wash away grease, which could lead to overflow or contamination. Together, these characteristics keep the grease contained securely and prevent weather-related problems. The other options don’t guarantee both secure containment and weather protection: grease-tight focuses on grease containment but not weatherproofing; liquidtight emphasizes preventing leaks but doesn’t ensure no rain entry if openings exist; welded describes how it’s built but doesn’t inherently ensure rainproof closure; waterproof is strong, but rainproof is the more appropriate term for outdoor, weather-exposed situations.

The main idea here is that a rooftop grease collection container must be protected from the elements and completely enclosed. Being closed means there are no openings for contents to spill out or for air and odors to escape, while rainproof ensures rain cannot enter and dilute or wash away grease, which could lead to overflow or contamination. Together, these characteristics keep the grease contained securely and prevent weather-related problems. The other options don’t guarantee both secure containment and weather protection: grease-tight focuses on grease containment but not weatherproofing; liquidtight emphasizes preventing leaks but doesn’t ensure no rain entry if openings exist; welded describes how it’s built but doesn’t inherently ensure rainproof closure; waterproof is strong, but rainproof is the more appropriate term for outdoor, weather-exposed situations.