ARE_CODES Flashcards
IBC ch.3 Occupancy and Classification Groups
ALL MAIN OCCUPANCY GROUPS
1 / ASSEMBLY (A-1, A-2, A-3, A-4, A-5) 2 / BUSINESS (B) 3 / EDUCATIONAL (E) 4 / FACTORY and INDUSTRIAL (F-1, F-2) 5 / HIGH HAZARD (H-1, H-2, H-3, H-4, H-5) 6 / INSTITUTIONAL (I-1, I-2, I-3, I-4) 7 / MERCANTILE (M) 8 / RESIDENTIAL (R-1, R-2, R-3, R-4) 9 / STORAGE (S-1, S-2) 10 / UTILITY and MSCELLANEOUS (U)
IBC ch.3 Occupancy and Classification Groups
ASSEMBLY OCCUPANCIES
GROUP A: 50 OR MORE OCCUPANTS
A-1 / fixed seats w/ low light levels during performance
A-2 / food and drink consumed, alcohol, loose chairs and tables, associated kitchens
A-3 / worship, recreation, amusement
A-4 / indoor sporting events
A-5 / outdoor sporting events
IBC ch.3 Occupancy and Classification Groups
BUSINESS GROUP OCCUPANCY
GROUP B
Office buildings are typ classified as Group B occupancies. Storage areas for offices, such as back-office file rooms, do not constitute a separate occupancy
“Ambulatory Care Facility” is contained in the B occupancy list - even w/ patients incapable of unassisted self-preservation if patents stay for <24 hrs
IBC ch.3 Occupancy and Classification Groups
EDUCATIONAL GROUP OCCUPANCY
GROUP E
- 6 or more people for classes up to the 12th grade
- day care of 6 or more children over 2 1/2 yrs old (fewer than 6 are R-3)
IBC ch.3 Occupancy and Classification Groups
FACTORY AND INDUSTRIAL OCCUPANCY
GROUP F
Defined by what they are not
F-1 / MODERATE HAZARD alcohol abv 16%
F-2 / LOW-HAZARD (materials are non-combustible), alcohol under 16%
based on analysis of the relative hazards fo the operations in these occ and a determination they do not fall under Group H
IBC ch.3 Occupancy and Classification Groups
HIGH-HAZARD OCCUPANCY
GROUP H
a need to understand the products, processes, hazard levels of materials used and quantities is essential
H-1 - H-4 / relate to the hazard and quantity of materials
H-5 / THE NATURE OF THE USE AS WELL AS THE QUANTITY
IBC ch.3 Occupancy and Classification Groups
HIGH-HAZARD CONTROL AREAS
“spaces within a building where quantities of hazardous materials not exceeding the maximum allowable quantities per control area are stored, dispensed, used or handled”
Control Areas allow mult parts of a bldg to contain areas w/ specified quantity of hazardous material. The amount of allowable hazardous material decreases as floor levels increase.
IBC ch.3 Occupancy and Classification Groups
INSTITUTIONAL OCCUPANCY GROUPS
GROUP I
subdivided by abilities of the occ to take care of themselves in emergency
I-1 C1 / >16 ppl, 24-hr sv, unassisted, alarmed exit
I-1 C2 / >16, 24-hr sv, staff assistance, smoke detection barriers, alarmed exit sprinklers limit stories
I-2 / >5 ppl, 24-hr sv, staff assistance (Hospitals, nursing homes, mental hospitals)
I-3 / >5 ppl, 24-hr sv, prisons, detentions centers, controlled exit
I-4 / >5 ppl, <24-hr, assistance needed, (6-100 child daycare under 2-1/2 yrs old)
IBC ch.3 Occupancy and Classification Groups
MERCANTILE OCCUPANCY GROUPS
GROUP M
includes mixed-use provisions in section 508
most retail facilities, no matter what merchandise they sell (newly added greenhouses for display and sale of plants)
limits to quantities of hazardous materials that may be stored in mercantile occupancies
IBC ch.3 Occupancy and Classification Groups
RESIDENTIAL OCCUPANCY GROUPS
GROUP R
TYP housing units distinguished by total # of occupants, occ sleep in the building
R-1 / 30 days or less (hotels), assumes occ unfamiliar
R-2 / >30 days, more than 2 units, faclty w/ >16 occ
R-3 / care facilities for <6 ppl and other - IRC
R-4 / assisted living 6-16 occ (C1 ppl capable of evacuating and C2 incapable)
IBC ch.3 Occupancy and Classification Groups
STORAGE OCCUPANCY GROUPS
GROUP S
storage for materials w/ quantities or characteristics not considered hazardous
S-1 / moderate hazard
S-2 / low hazard
IBC ch.3 Occupancy and Classification Groups
UTILITY and MISC OCCUPANCY GROUP
GROUP U
incidental bldgs of an accessory nature. Typ unoccupied except for short times during 24hr period.
also includes fences 6’ or higher and retaining walls
IBC ch.3 Occupancy and Classification Groups
SPECIAL DETAILED REQ FOR OCC
1 / Ch3 of IBC ID general use and Occ Group
2 / refter to Ch4 of IBC review req for special detailed req
special occ that req more detail / High-Rise, Atriums, Underground Bldgs, Dyring rooms, live/work units, higher edu labs, etc
IBC ch.4 Special Dtl Req based on Occ and Use
CODE PROVISIONS FOR OPEN MALLS
1 / multiple clear paths of exit w/ sufficient widths
2 / increased bldg area offset by separation from other bldgs by at least 60ft of permanent open space
3 / hazardous uses such as parking structures be separated from the mall by min dist or fire barrier
4 / active fire protection w/ sprinklers, standby power, central fire dept operations in area
BASIC CODE RESEARCH CHECKLIST
1 / FIND OCCUPANCY
2 / DETERMINE ALLOWABLE HEIGHTS AND AREAS
IBC Ch. 2 Definitions
“BUILDING AREA”
“the area included within surrounding exterior walls”
IBC Ch. 2 Definitions
“FLOOR AREA, GROSS”
“The floor area within the inside perimeter of the exterior walls of the building under consideration, exclusive of vent shafts and courts, without deduction for corridors, stairways, ramps, closets, the thickness of interior walls, columns or other features. The floor area of a bldg or portion thereof, not provided with surrounding exterior walls shall be the usable area under teh horizontal projection of the roof or floor above. The gross floor area shall not include shafts with no opeings or interior couts.
IBC Ch. 2 Definitions
“FLOOR AREA, NET”
“The actual occupied area not including unoccupied accessory areas such as corridors, stairways, ramps, toilet rooms, mechanical rooms, and closets.
IBC Ch. 2 Definitions
“GROSS LEASABLE AREA”
The total floor area designed for tenant occupancy and exclusive use…
measured CL of joint partitions to the outside of the tenant walls.
all areas including storage
IBC Ch.2 Definitions
“Building Height”
“the vertical distance from the grade plane to the average height of the highest roof surface”
IBC Ch.2 Definitions
“Story Height”
measured as the vertical distance from the top of one finished floor to the top of the next successive finished floor.
A “story above grade plane” if the finished floor is entirely above the grade plane.
TYPES of SPRINKLER STATUS of BLDG
NS: no sprinkler
S: automatic sprinkler (NFPA 13)
S1: max one story automatic sprnkler (NFPA 13)
SM: 2 or more stories, automatic sprnkler (NFPA 13)
S13R: automatic sprinkler up to and including 4th floor, not exceeding 60 ft (NFPA 13R)
NONCOMBUSTIBLE MATERIALS
Types I and II are made of noncombustible materials
IBC, states that materials req to be noncombustible must meet the test criteria prescribed in the ASTM standard E136
Uniform Building Code, “a material of which no part will ignite and burn when subjected to fire”
masonry, concrete, and steel
CATEGORIES OF BLDG ELEMENTS
FOR REQ FIRE RESISTANCE RATING
- Structural Frame
- Bearing Walls
- Nonbearing walls
- Exterior Nonbearing Walls
- Floor Construction
- Roof Construction
