Statutes, codes, and regulations
District Of Columbia Administrative Code
Title 12 - CONSTRUCTION CODES SUPPLEMENT OF 2017Subtitle 12-A - BUILDING CODE SUPPLEMENT OF 2017
Chapter 12-A10 - MEANS OF EGRESS
Rule 12-A1005 - MEANS OF EGRESS SIZING

D.C. Mun. Regs. r. 12-A1005

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Current through Register Vol. 71, No. 24, June 14, 2024
Rule 12-A1005 - MEANS OF EGRESS SIZING

Strike the Exceptions to Section 1005.3.1 of the International Building Code in their entirety and insert new exceptions to Section 1005.3.1 of the Building Code in their place to read as follows:

Exceptions:

1. For other than Group H and I- 2 occupancies, the capacity, in inches (mm), of the means of egress stairways shall be calculated by multiplying the occupant load served by the stairway by a means of egress capacity factor of 0.2 inch (5.1 mm) per occupant in buildings equipped throughout with an automatic sprinkler system installed in accordance with Section 903.3.1.1 or 903.3.1.2.
2. Facilities with smoke-protected assembly seating shall be permitted to use the capacity factors in Table 1029.6.2 indicated for stepped aisles for exit access or exit stairways where the entire path for means of egress from the seating to the exit discharge is provided with a smoke control system complying with Section 909.
3. Facilities with outdoor smoke-protected assembly seating shall be permitted to use the capacity factors in Table 1029.6.3 indicated for stepped aisles for exit access or exit stairways where the entire path for means of egress from the seating to the exit discharge is open to the outdoors.

Strike the Exceptions to Section 1005.3.2 of the International Building Code in their entirety and insert new Exceptions to Section 1005.3.2 of the Building Code in their place to read as follows:

Exceptions:

1. For other than Group H and I- 2 occupancies, the capacity, in inches (mm), of means of egress components other than stairways shall be calculated by multiplying the occupant load served by such component by a means of egress capacity factor of 0.15 inch (3.8 mm) per occupant in buildings equipped throughout with an automatic sprinkler system installed in accordance with Section 903.3.1.1 or 903.3.1.2.
2. Facilities with smoke-protected assembly seating shall be permitted to use the capacity factors in Table 1029.6.2 indicated for level or ramped aisles for means of egress components other than stairways where the entire path for means of egress from the seating to the exit discharge is provided with a smoke control system complying with Section 909.
3. Facilities with outdoor smoke-protected assembly seating shall be permitted to use the capacity factors in Table 1029.6.3 indicated for level or ramped aisles for means of egress components other than stairways where the entire path for means of egress from the seating to the exit discharge is open to the outdoors.

D.C. Mun. Regs. r. 12-A1005

Final Rulemaking published at 67 DCR 5679 (5/29/2020)