1. MAJED A. DABDOUB, P.E

2. USE AND OCCUPANCY CLASSIFICATION
CHAPTER 3 OBC
USE AND OCCUPANCY CLASSIFICATION

3. PURPOSE CLASSIFY A BUILDING/STRUCTURE. DESIGNED/OR OCCUPIED
USE IS NEEDED BECAUSE:
CONSTRUCTION TYPE
MEANS OF EGRESS
FIRE PROTECTION
INTERIOR FINISH
VENTILATION
PLUMBING

4. SCOPE
MUST CONTROL THE CLASSIFICATION OF ALL BUILDINGS AND STRUCTURES AS TO USE AND OCCUPANCY.

5. EQUIVALENT RISK LEVEL OF FIRE HAZARD VS SPECIFIC OCCUPANCY
REDUCTION OF FIRE HAZARD
OVERALL FIRE RESISTANCE

6. ISSUES RELATED TOC RESTRICTIONS FIRE PROTECTION REQUIREMENTS
LOCATION, AREA AND HEIGHT LIMITATIONS
MEANS OF EGRESS ELEMENTS

7. ISSUES RELATED- OCCUPANTS
NUMBER OF OCCUPANTS
DENSITY OF OCCUPANTS
AGE OF OCCUPANTS
MOBILITY OF OCCUPANTS
AWARENESS OF OCCUPANTS

8. RELATED ISSUE - CONTENT
DENSITY OF CONTENTS
QUANTITY OF CONTENTS
TYPE OF CONTENTS
ENVIRONMENT OF CONTENTS

9. CLASSIFICATIONS 26 OCCUPANCY GROUPS A: A-1, A-2, A-3, A-4; A-5 (303)
B (304)
E ( 305)
F-1, F-2 (306)
H-1,H-2, H-3, H-4, H-5 (307)
I-1, I-2, I-3, I-4 (308)
M (309)
R-1, R-2, R-3, R-4, (310)
S-1, S-2 (311)
U (312)

10. ASSEMBLY GROUP, A THREE EXCEPTIONS: LESS THAN 50 PEOPLE….. B USE
LESS THAN 50… B OR PART OF THAT USE
LESS THAN 750 SQ.FT IN AREA AND ACCESSORY TO ANOTHER OCCUPANCY B USE OR PART OF THAT USE.

11. A ---USES
1. ACTIVITIES
2. CHARACTERISTICS
3. LIFE SAFETY HAZARD

12. SWIMMING POOL A-3 W/T BLEACHERS A-4 WITH BLEACHERS
A-5 AN OUTDOOR WITH/WITHOUT

13. GROUP B OCCUPANCY
THE USE OF THE BUILDING OR STRUCTURE FOR OFFICE, … SEE LIST

14. E -USES
DAY CARES SEE OHIO LANGUAGE

15. F- USES
1. MODERATE HAZARD OCCUPANCY
2. LOW HAZARD OCCUPANCY

16. H-USES
STORAGE OR HANDLING OF CERTAIN MATERIALS, CORROSIVE, TOXIC, POISONOUS
EXCEPTIONS QUANTITY, MATERIALS
EXCEPTION1 BUILDING AREA
EXCEPTION 2 CONTROL AREA
TABLE- TYPE OF HAZARD

17. I-USES
INSTITUTIONAL PEOPLE LIVE OR ARE CARED FOR

18. M -USE
MERCANTILE GROUP– DISPLAY AND SALE

19. R- USES
SEE OHIO LANGUAGE FOR R-5
R-1
R-2
R-3

20. STORAGE USES
S-1 MODERATE HAZARD
S-2 LOW HAZARD

21. U-- GROUP
SEE TABLE

22. 2007 CODE MIXED USES MOVED FROM CHAPTER THREE TO FIVE
SECTION ASSEMBLY GROUP:
THREE EXCEPTIONS FOR B USE
SECTION TRAINING AND SKILL DEVELOPMENT B USE GROUP
HAZARDOUS MATERIALS MEETS THIS SECTION AND IFC MOVED 414 TO SECTION 307
SECTION CONGREGATE LIVING WITH 16 OR FEWER OCCUPANT R-3
SECTION DRY BOAT STORAGE(INDOOR) S-2 USE

23. 2009 IBC SECTION 303.1 EXCEPTIONS 4 AND 5 SECTION 304.1 306.3 307.1
308.3
309.1
310.1
311