1. Chapter 3 Part 2: Occupant load
ID 234 Building Codes
Fall 2008
Means of Egress
Chapter 3
Part 2: Occupant load

2. Egress system capacity
Based on occupant load
Based on sprinklers

3. Number of Exits

4. Required number of exits

5. Exit Widths

6. Aisles and Accessways

7. Separation of Exits

8. Half Diagonal Rule Your diagram:
Indicate overall diagonal graphically and with number
Indicate actual separation graphically and with number

9. Exit Access Travel Distance

10. Exit Access travel distance
Choose the most remote part of plan to the furthest exit
Exit Access travel distance

11. Travel Distance Example
Your diagram:
On title page
Show only longest path
Travel Distance Example

12. Exit Signs

13. Emergency Lighting Required when two or more exits are required
Emergency electrical system or battery
General exit lighting and exit signs must be lit at all times
Emergency Lighting

14. Another Checklist

15. Graphic representations
Calculations
Graphic representations

16. Occupancy plan

17. Use a key for specific occupancy types

19. Other information can be shown

20. Code Analysis Examples
Thesis project, Spring 2008

21. EGRESS ANALYSIS: LEVEL 1

22. EGRESS ANALYSIS: LEVEL 2

23. OCCUPANCY ANALYSIS
LEVEL 2
LEVEL 1

24. COMPARTMENTALIZATION DIAGRAM
FROM FRONT
PREVIOUS CIRCULATION DIAGRAMS
COMPARTMENTALIZATION DIAGRAM
FROM BACK

29. Calculations
Numerical, using Excel

30. Calculating Occupant Load
Within modeling software:
Use chart in code to identify Specific Occupancy Areas (in Ch. 10)
Create/import Occupancy Calculations schedule and fill out for each room from Revit
Create 1/32” scale Occupancy Plan and add color scheme
Adjust areas for circulation, furniture, etc, and enter into chart for each level
Chart calculates toilets, egress component dimension
Fix your plans to comply
Calculating Occupant Load

31. Calculating Occupant Load
Use a spreadsheet
Get’s areas from SketchUp
Calculating Occupant Load