 Reference to Occupant Load Calculation:

The International Fire Code (IFC 2021), Section 1004.2 states that the calculated occupant load of a building may be increased if all other life safety provisions are met.

However, the occupant load cannot exceed one person per 5 square feet when increased beyond the standard calculations.

 Fire Safety Considerations for Increased Occupant Load:

Increasing the occupant load requires ensuring:

Egress capacity (number and width of exits) meets the increased load.

Fire protection systems (sprinklers, alarms, etc.) are adequate for the new load.

Proper ventilation and sanitation facilities are maintained.

IFC 1004.2 and NFPA 101 both enforce the maximum limit of 1 occupant per 5 square feet in modified occupant load scenarios.

 Clarification of Incorrect Answer Choices:

A. 3 sq. ft. → Incorrect

Too small for safe egress and occupant movement; the code does not allow such high density in general occupancies.

C. 7 sq. ft. → Incorrect

While some occupancies have higher space-per-occupant allowances, 5 sq. ft. is the maximum density permitted when increasing load.

D. 15 sq. ft. → Incorrect

15 sq. ft. per person is for lower-density assembly and business occupancies, not for maximum occupant load increases.

 Conclusion:

The correct and verified answer is B (5 sq. ft. per occupant) as per IFC 1004.2 and NFPA 101, which govern occupant load increases in buildings.