Section 1001

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SECTION 1001 - GENERAL

1001.1 Scope and Standards of Quality. Every building or portion thereof shall be provided with exits as required by this chapter.

The standards listed below labeled a "U.B.C. standard" are also listed in Chapter 35, Part II, and are part of this code. The other standards listed below are recognized standards and as such are not adopted as part of this code (see Sections 3502 and 3503).

1. Power doors.

1.1 U.B.C. Standard 10-1, Power-operated Exit Doors

1.2 U.B.C. Standard 7-8, Horizontal Sliding Fire Doors Used in an Exit

2. Stairway numbering system.

U.B.C. Standard 10-2, Stairway Identification

3. Hardware.

U.B.C. Standard 10-4, Panic Hardware

1001.2 Definitions. For the purpose of this chapter, certain terms are defined as follows:

BALCONY, EXTERIOR EXIT, is a landing or porch projecting from the wall of a building, and which serves as a required exit. The long side shall be at least 50 percent open, and the open area above the guardrail shall be so distributed as to prevent the accumulation of smoke or toxic gases.

EXIT is a continuous and unobstructed means of egress to a public way and shall include intervening aisles, doors, doorways, gates, corridors, exterior exit balconies, ramps, stairways, pressurized enclosures, horizontal exits, exit passageways, exit courts and yards.

EXIT COURT is a yard or court providing access to a public way for one or more required exits.

EXIT PASSAGEWAY is an enclosed exit connecting a required exit or exit court with a public way.

EXTERIOR STAIRWAY is a stairway that is open on two adjacent sides, except for required structural columns and open-type handrails and guardrails. The adjoining open areas shall be either yards, courts or public ways; the other two sides may be enclosed by the exterior walls of the building.

HORIZONTAL EXIT is an exit from one building into another building on approximately the same level, or through or around a wall constructed as required for a two-hour occupancy separation and which completely divides a floor into two or more separate areas so as to establish an area of refuge affording safety from fire or smoke coming from the area from which escape is made.

INTERIOR STAIRWAY is any stairway not meeting the definition of an exterior stairway.

MULTITHEATER COMPLEX is a building or portion thereof containing two or more motion picture auditoriums which are served by a common lobby.

PANIC HARDWARE is a door-latching assembly incorporating an unlatching device, the activating portion of which extends across at least one half the width of the door leaf on which it is installed.

PRIVATE STAIRWAY is a stairway serving one tenant only.

PUBLIC WAY is any street, alley or similar parcel of land essentially unobstructed from the ground to the sky which is deeded, dedicated or otherwise permanently appropriated to the public for public use and having a clear width of not less than 10 feet (3048 mm).

SMOKE-PROTECTED ASSEMBLY SEATING is seating served by means of egress which is not subject to blockage by smoke accumulation within or under a structure.

SPIRAL STAIRWAY is a stairway having a closed circular form in its plan view with uniform section shaped treads attached to and radiating about a minimum diameter supporting column. The effective tread is delineated by the nosing radius line, the exterior arc (center line of railing) and the overlap radius line (nosing radius line of tread above). Effective tread dimensions are taken along a line perpendicular to the center line of the tread.

TRAVEL DISTANCE is the total length of the exit path an occupant must travel from any point within the occupied portions of a building to reach an exterior exit door, horizontal exit door, exit passageway door or an enclosed exit stairway door.

1001.3 Exit Obstruction. Obstructions shall not be placed in the required width of an exit except projections permitted by this chapter.

1001.4 Changes in Elevation. Elevation changes in an exit shall comply with Section 1006.3 or 1007.

Within a building, changes in elevation of less than 12 inches (305 mm) along an exit serving an occupant load of 10 or more shall be by ramps.

EXCEPTION: Group R, Division 3 Occupancies and along aisles adjoining seating areas.

1001.5 Guardrails. See Section 509 for guardrail requirements.

1001.6 Yards, Patios and Courts. Yards, patios, courts and similar outdoor areas accessible to and usable by the building occupants shall be provided with exits as required by this chapter. The occupant load of such outdoor areas shall be assigned by the building official in accordance with their anticipated use. When outdoor areas are to be used by persons in addition to the occupants of the building, and exits from the outdoor areas pass through the building, exit requirements for the building shall be based on the sum of the occupant loads of the building plus the outdoor areas.

EXCEPTIONS: 1. Outdoor areas used exclusively for service of the building may have only one exit.

2. Outdoor areas associated with Group R, Division 3 Occupancies.

1001.7 Building Accessibility. In addition to provisions of this chapter, exits which provide access to, or egress from, buildings for persons with disabilities shall also comply with Chapter 11.

1001.8 Elevators or Escalators. Elevators or escalators shall not be used as a required exit.