Reference to Fire Extinguisher Requirements in Buildings Under Construction:
NFPA 241 (Standard for Safeguarding Construction, Alteration, and Demolition Operations) Section 13.6.1 and IFC 3309.1 require that:
A minimum of one fire extinguisher per floor is required.
Additional extinguishers are required based on stairwells and floor area.
If a building under construction has two stairways, a minimum of two fire extinguishers must be provided per floor to ensure adequate fire protection coverage.
Fire Safety Considerations for Construction Sites:
Construction sites pose a high fire risk due to temporary electrical systems, combustible materials, and lack of finished fire suppression systems.
Fire extinguishers must be readily available and evenly distributed near exit stairways and pathways for rapid access in case of an emergency.
Clarification of Incorrect Answer Choices:
A: 1 # Incorrect
One extinguisher is the minimum required for floors with only one exit/stairway, but a building with two stairways requires at least two extinguishers.
C: 3 # Incorrect
While more extinguishers can be added for larger areas or high-risk work zones, the minimum requirement remains two for two stairwells.
D: 4 # Incorrect
There is no general requirement for four extinguishers per floor unless dictated by floor size and hazard level.
Conclusion:
The correct and verified answer is B (2 fire extinguishers per floor) based on NFPA 241 and IFC 3309.1, ensuring compliance with fire safety standards for buildings under construction.