NFPA PACE / RP key terms

A building or portion of one used for gatherings of 50 or more people, such as theaters, churches, restaurants, or arenas, where occupants may be concentrated or move as a crowd.

The total number of people calculated for a space by dividing its floor area by the area-per-person factor assigned to its use, or by counting fixed seats when provided.

A continuous and unobstructed path of travel from any point in a building to a public way, made up of exit access, the exit, and exit discharge components.

The portion of the means of egress that leads from any occupied point in a building to an exit, such as aisles, corridors, and intervening rooms.

The portion of the means of egress between the termination of an exit and a public way, including exterior courts, yards, and alleys that lead to the street.

The measured length along the natural path of travel from the most remote point in a space to the nearest exit, measured along the floor line.

The portion of exit access that occupants must traverse before two separate routes to an exit become available, measured from the most remote point.

The number of people a given egress component can carry, calculated by multiplying its clear width by a capacity factor and adjusting for stairs and other features.

The unobstructed horizontal dimension of a door, aisle, corridor, or stair measured at the narrowest point, excluding projections such as handrails or door hardware.

The path within seating areas that leads from seats to an aisle, typically with narrower dimensions than an aisle and limited in length by code.

An aisle that runs perpendicular to the main seating aisles and connects them, providing an alternate route to exits and shortening aisle accessway travel.

Seats permanently attached to the floor or structure, such as theater rows, where occupant load may be counted by seat count and row spacing rules apply.

A structure or space where people gather for amusement, worship, instruction, or similar purposes, often subject to occupancy, exit, and fire-safety requirements beyond ordinary commercial buildings.

The distance measured from the exterior wall of a building to the nearest lot line, interior lot line, or centerline of a street, used to set allowable wall openings and construction.

A window, door, or other penetration in an exterior wall whose permitted size and protection depend on the fire separation distance and the wall's fire-resistance rating.

A street, alley, or other parcel of land open to the outside air that has been legally dedicated and deeded to public use, serving as the terminal point of exit discharge.

A door-latching assembly that releases when pressure is applied in the direction of egress travel, required on certain doors serving assembly and other high-occupancy spaces.

A door serving as part of the means of egress, required to swing in the direction of travel when serving a high occupant load and to be openable without a key or special knowledge.

A locking arrangement that holds an egress door briefly, then releases automatically on an alarm or sensor, permitted only under specific conditions with signage and fire-alarm integration.

A network of initiating devices, notification appliances, and control equipment that detects fire conditions and alerts occupants, often required to coordinate with door releases and suppression.

An automatic piping network with heat-activated heads that discharges water to control or extinguish fire, and whose presence can relax other code requirements such as exit remoteness.

The period, in hours or minutes, that a building element withstands a standardized fire test without failing, used to classify walls, floors, and opening protectives.

A trained individual assigned to monitor audience behavior, keep exits and aisles clear, and assist evacuation in an assembly venue during events.

A building or portion used for sleeping and living purposes, including one- and two-family dwellings, apartments, hotels, and dormitories, each with distinct code provisions.

A single unit providing complete independent living facilities for one or more persons, including permanent provisions for living, sleeping, cooking, and sanitation.

A room or space in which people sleep, such as a hotel guest room or dormitory room, which may or may not include cooking and sanitary facilities.

A single-station or multiple-station device that detects smoke and sounds a local alarm, required in sleeping rooms and near sleeping areas of dwellings.

A sensing device connected to a fire alarm control panel that reports smoke conditions to the system, distinct from a standalone alarm that sounds only locally.

A device that detects carbon monoxide gas and sounds an alarm, required near sleeping areas in dwellings containing fuel-burning appliances or attached garages.

An operable window of minimum size and sill height in a sleeping room that provides a secondary escape route and access for emergency responders.

An excavation outside a basement egress window that provides clearance and a ladder or steps where required for emergency escape.

A barrier along an elevated walking surface, open side of a stair, or balcony that prevents falls, with height and opening limits set by code.

A graspable rail along a stairway or ramp that provides support and stability for users, required on at least one side and at specified heights.

A series of steps between floors or levels, subject to requirements for riser height, tread depth, width, headroom, landings, and handrails.

A classification of a building by the fire resistance of its structural elements, ranging from noncombustible protected types to combustible wood-frame types.

A continuous path from a dwelling unit to the exterior or to a public way, used in residential provisions to describe required escape routes.

A detached structure on a residential lot, such as a shed or garage, that is incidental to the dwelling and subject to size and location limits.

The alteration, repair, or improvement of an existing residential building, where code provisions may allow existing conditions to remain if life safety is maintained.