1. What is Occupant Load Calculation?

The Occupant Load calculation determines the maximum number of people allowed in a space according to the International Building Code (IBC). It's based on the area of the space and its intended use as defined in IBC Table 1004.5.

2. How Does the Calculator Work?

The calculator uses the basic occupant load formula:

Where:

• \( \text{Area} \) — Floor area in square feet
• \( \text{IBC Table Factor} \) — Square feet per occupant from IBC Table 1004.5

Explanation: The calculation divides the total area by the occupant load factor specific to the space's use (e.g., 15 sq ft per person for business areas, 7 sq ft per person for standing areas).

3. Importance of Occupant Load Calculation

Details: Proper occupant load calculation is essential for life safety, ensuring adequate egress capacity, proper sizing of exits, and compliance with fire codes and building regulations.

4. Using the Calculator

Tips: Enter the floor area in square feet and the appropriate IBC table factor for your occupancy type. Common factors include 15 (business), 7 (standing space), 30 (assembly with tables), or 5 (concentrated assembly).

5. Frequently Asked Questions (FAQ)

Q1: Where can I find IBC Table Factors?
A: Factors are listed in IBC Table 1004.5, which specifies occupant load factors for different space uses.

Q2: How is occupant load used in design?
A: It determines required exit widths, number of exits, plumbing fixture counts, and other life safety features.

Q3: Are there exceptions to these calculations?
A: Yes, some spaces have fixed occupant loads regardless of area (like stages) or may use approved actual counts.

Q4: How do you round occupant load results?
A: Typically rounded up to the nearest whole number, as you can't have a fraction of a person.

Q5: What's the difference between occupant load and actual occupancy?
A: Occupant load is the maximum allowed by code, while actual occupancy is how many people are typically in the space.