What is a primary function of raised floors in flood-resilient tropical design?

• A. To keep interiors above potential flood levels.
• B. To improve airtightness.
• C. To store utilities underground.
• D. To increase solar heat gain.

Answer: (A)

Raising the floor in flood-resilient tropical design is about keeping interiors dry by placing the living spaces above potential flood levels. Elevating the floor creates a vertical separation that prevents water from entering the habitable area during floods, helping to protect people, furniture, and utilities. This setup also allows any water that does get under the building to flow away rather than rise into the rooms, and it simplifies post-flood cleanup.

A few other ideas don’t fit as the main purpose: improving airtightness is about sealing the envelope, not lifting the floor to avoid flood damage; storing utilities underground increases risk if water rises; and increasing solar heat gain is about climate control rather than flood resilience.