of NFPA 101 Life Safety Code 2000 Edition Means of Egress Session 23 | Codes | Gary Parker Chapter 7 – 3rd part of NFPA 101 Life Safety Code 2000 Edition Means of Egress - Arrangement of Means of Egress - Measurement of Travel Distance to Exits - Discharge from Exits - Illumination of Means of Egress - Emergency Lighting - Marking of Means of Egress

7.5 – Arrangement of Means of Egress At least two separate exits on each level. Where common paths of travel are permitted for an occupancy, such common paths of travel shall be permitted but shall not exceed the limit specified. Where more than two exits or exit access doors are required, at least two of them shall be arranged to comply with minimum separation distance. Exit access shall be arranged so that there are no dead end corridors, unless permitted by and limited to the length as specified for each occupancy Chapter 12 – 42.

Determining the Remoteness with Half the Diagonal Where more than one exit is required for a building or a portion thereof, they shall be placed at a distance from one another not less than half of the maximum diagonal dimension of the building or area to be served.

Determining the Remoteness with Half the Diagonal

Remoteness with Scissor Stairs

Dead End Corridors

Dead End Corridors

Rating of Means of Egress

Accessible Means of Egress

7.6 – Measurement of Travel Distance to Exits TD to an exit shall be measured on the floor or other walking surface along the centerline of the natural path of travel, starting from the most remote point subject to occupancy, curving around any corners or obstructions with a 1-ft clearance therefrom, and ending at the center of the doorway or other point at which the exit begins. Where measurement includes stairs, the measurement shall be taken in the plane of the tread nosing.

Travel Distance to Exits

Selected Sections from Chapter 12 New Assembly Occupancies Occupant Load Whichever is greater from Table 7.3.1.2 or by calculating at most 1 person per 5 sq ft for areas up to 10,000 sq ft and 1 person per 7 sq ft for areas larger than 10,000 sq ft. Common Path of Travel Permitted for the first 20 ft from any point where serving any number of occupants. Permitted for the first 75 ft from any point when serving up to 50 occupants. Dead-end aisles Shall not exceed 20 ft. Travel Distance to Exits Exits shall be arranged so that the total length of travel from any point to reach an exit shall not exceed 150 ft. Maximum Number of Seats Between Farthest Seat and Aisle Grandstand Outdoors 11 Grandstand Indoors 6 Bleachers Outdoors 20 Bleachers Indoors 9

Selected Sections from Chapter 14 New Educational Occupancies Occupant Load As per Table 7.3.1.2 Common Path of Travel Permitted for the first 75 ft. Permitted for the first 100 ft for sprinklered buildings. Dead-end corridors Shall not exceed 20 ft. Travel Distance to Exits Exits shall be arranged so that the total length of travel from any point to reach an exit shall not exceed 150 ft. (200 for sprinklered) Number of Exits At least 2 separate exits. Provided on every story. Accessible from every part of every story or mezzanine.

Selected Sections from Chapter 16 New Day-Care Occupancies Occupant Load Whichever is greater from Table 7.3.1.2 or by calculating the maximum probable population. Common Path of Travel Permitted for the first 75 ft. Permitted for the first 100 ft for sprinklered buildings. Dead-end corridors Shall not exceed 20 ft. Travel Distance to Exits TD between any room door intended as an exit shall not exceed 100 ft. TD between any point in a room and an exit shall not exceed 150 ft. TD between any point in a sleeping room and an exit access door in that room shall not exceed 50 ft. (Increase by 50 ft for sprinklered buildings). Number of Exits Each floor occupied by clients shall have at least 2 separate exits.

Selected Sections from Chapter 18 New Health Care Occupancies Occupant Load Whichever is greater from Table 7.3.1.2 or as the maximum probable population of space. Common Path of Travel Permitted for the first 20 ft from any point where serving any number of occupants. Permitted for the first 75 ft from any point when serving up to 50 occupants. Travel Distance to Exits TD between any room door intended as an exit shall not exceed 150 ft. TD between any point in a room and an exit shall not exceed 200 ft. TD between any point in a healthcare sleeping room and an exit access door in that room shall not exceed 50 ft, for suite rooms 100 ft. Number of Exits At least 2 separate exits on each floor. Dead-end corridors Shall not exceed 30 ft.

Selected Sections from Chapter 24 One & Two Family Dwellings Occupant Load No requirements. Arrangement of Means of Escape Any required path of travel in a means of escape shall not pass through a room or apartment not under the immediate control of the occupant or through a bathroom or other space subject to locking. Travel Distance to Exits Every story more than 2,000 sq ft in area or with a TD to the primary means of escape of more than 75 ft shall be provided with 2 primary means of escape. Numbers of Means of Escape Every sleeping room and every living area shall have at least one primary means of escape and one secondary means of escape. (exceptions for the secondary means of escape for rooms with a door directly to outside or at grade level, or sprinklered)

Selected Sections from Chapter 28 New Hotels & Dormitories Occupant Load Whichever is greater from Table 7.3.1.2 or as the maximum probable population of space. Common Path of Travel Shall not exceed 35 ft. Travel within a guest room shall not be included in the calculation. For sprinklered 50 ft is allowed. Travel Distance to Exits TD within a guest room to a corridor shall not exceed 75 ft. TD from the corridor door of any room to the nearest exit shall not exceed 100 ft. Dead-end corridors Shall not exceed 35 ft. Number of Exits At least 2 separate exits on each floor.

Selected Sections from Chapter 30 New Apartment Buildings Occupant Load Whichever is greater from Table 7.3.1.2 or as the maximum probable population of space. Common Path of Travel Shall not exceed 35 ft. Travel within a dwelling unit shall not be included in the calculation. Travel Distance to Exits TD within a dwelling unit shall not exceed 75 ft. TD from the corridor door of any room to the nearest exit shall not exceed 100 ft. TD from other areas than those for living shall not exceed 200 ft. Dead-end corridors Shall not exceed 35 ft. Number of Exits Every dwelling unit shall have access to not less than 2 separate exits remotely located as required by 7.5.1

Selected Sections from Chapter 36 New Mercantile Occupancies Occupant Load Whichever is greater from Table 7.3.1.2 or as the maximum probable population of space. Common Path of Travel Shall not exceed 75 ft. (100 ft for sprinklered) Travel Distance to Exits TD shall not exceed 100 ft. Dead-end corridors Shall not exceed 20 ft. Number of Exits At least 2 separate exits. Provided on every story. Accessible from every part of every story or mezzanine.

Selected Sections from Chapter 38 New Business Occupancies Occupant Load Whichever is greater from Table 7.3.1.2 or as the maximum probable population of space. Common Path of Travel Shall not exceed 75 ft. (100 ft for sprinklered) Travel Distance to Exits TD to exits shall not exceed 200 ft. Dead-end corridors Shall not exceed 20 ft. Number of Exits At least 2 separate exits. Provided on every story. Accessible from every part of every story or mezzanine.

Selected Sections from Chapter 40 Industrial Occupancies Occupant Load Whichever is greater from Table 7.3.1.2 or as the maximum probable population of space. Common Path of Travel Shall not exceed 50 ft. (100 ft for sprinklered). Not allowed in high hazard spaces. Travel Distance to Exits TD to exits shall not exceed 200 ft. Dead-end corridors Shall not exceed 50 ft. Number of Exits At least 2 separate exits on each floor. At least one of them should be reaches without traversing another story.