D.C. Municipal Regulations (Last Updated: September 13, 2017) |
Title 12. CONSTRUCTION CODES SUPPLEMENT OF 2013 |
SubTilte 12-J. EXISTING BUILDING CODE SUPPLEMENT OF 2013 |
Chapter 12-J9. ALTERATIONS - LEVEL 3 |
Section 12-J904. FIRE PROTECTION
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Strike Section 904.1.1 of the International Existing Building Code in its entirety and insert new Section 904.1.1 to the Existing Building Code in its place to read as follows:
904.1.1 High-rise buildings. In high-rise buildings, work areas shall be provided with automatic sprinkler protection in accordance with Section 903 of the Building Code, 12 DCMR A.
904.1.1.1 Where Level 3 work areas occur on 75 percent or more of the building floors, excluding mechanical, parking and non-occupiable levels, automatic sprinkler protection shall be provided throughout the entire building in accordance with Section 903 of the Building Code.
904.1.1.2 Where an automatic sprinkler system with sprinkler control valves and water flow devices is provided for each floor throughout the building in accordance with Section 903 of the Building Code, modifications to the minimum type of construction and fire resistance rating requirements of the Construction Codes are permitted as described in Section 403.2 of the Building Code.
904.1.1.3 Additional requirements for alterations to 100% percent of floors. Where Level 3 alteration work areas occur on all floors, excluding mechanical, parking and non-occupiable levels, the building shall comply with the following additional requirements:
- Emergency voice/alarm communication systems. Provide an emergency voice/alarm communication system in accordance with Section 403.4.4 of the Building Code.
- Emergency responder radio coverage. Provide a two-way fire department communications system in accordance with Section 403.4.5 of the Building Code.
- Fire command center. Provide a fire command center in accordance with Section 403.4.6 of the Building Code.
Exception: Where the following features do not exist in the building or cannot be readily provided as part of a Level 3 alteration, they are not required to be added for compliance with Section 911.1 of the Building Code: annunciator unit visually indicating the location of the elevators and whether they are operational; status indicators and controls for air-handling systems and emergency and standby power status indicators.
- Standby power and emergency power systems. Provide standby power and emergency power systems in accordance with Sections 403.4.8 and 403.4.9 of the Building Code.
Strike Section 904.1.2 of the International Existing Building Code in its entirety and insert new Section 904.1.2 to the Existing Building Code in its place to read as follows:
904.1.2 Rubbish and linen chutes. Rubbish and linen chutes located in the work area shall be provided with automatic sprinkler system protection where protection of the rubbish and linen chute would be required under the provisions of the Building Code for new construction.