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 MIL-HDBK-1008B
APPENDIX C
OCCUPANCY HAZARD CLASSIFICATION FOR DETERMINING AUTOMATIC
SPRINKLER DENSITIES AND HOSE STREAM DEMANDS
1. Classification of Occupancies. The principal occupancy classifications
are light hazard, ordinary hazard, and extra hazard. Listed below are the
classifications with examples of common occupancies listed under each. The
basic hazard classification of an occupancy does not define the fire hazard
present in all areas of that occupancy. If more hazardous processes or areas
exist within a given occupancy, they shall be protected in accordance with the
fire protection requirements pertaining to the hazard classification of that
area. The classification for unlisted occupancies shall be determined from
the definitions or by comparison with one of the listed occupancies.
A. Light Hazard Occupancies. Occupancies or portions of occupancies
where the quantity and combustibility of the contents are low and fires with
relatively low rates of heat release are expected. Small, scattered amounts
of flammable liquids in closed containers are allowable in quantities not
exceeding 5 gallons (20 L). The following are examples of light hazard
occupancies:
(1)
Churches and chapels
(2)
Gymnasiums
(3)
Clinics (dental, outpatient, patient areas only)
(4)
Hospitals
(5)
Data processing areas
(6)
Mess areas
(7)
Dispensaries (patient areas only)
(8)
Drill halls (not used for storage or exhibition)
(9)
Disciplinary barracks
(10)
Offices
(11)
Child development centers
B. Ordinary Hazard Group 1 Occupancies. Occupancies or portions of
occupancies where combustibility is low, quantity of combustibles is moderate,
stockpiles of combustibles do not exceed 8 feet (2.5 m), and fires with
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