Mech
REGISTERED
2009 IBC
Type 2B construction
Existing sprinklered 34,000 sf F-1/S-1 building with proposed sprinklered 25,000 sf F-1/S-1 building addition.
I would like to keep the areas divided, per 910.2.1 (listed below), to eliminate the need for smoke and heat vents.
The commentary (listed below) states “the dividing element would only need to be a partition constructed of materials equivalent to the construction of a draft curtain but that would extend from floor to ceiling in the space being separated. A fire barrier, smoke barrier, fire partition or smoke partition would be more than what is required and would therefore be an acceptable method of dividing the area.”
What are the requirements for the doors and air transfer openings? Do I use the requirements listed under Section 711 Smoke Partitions as they appear to be less strict than opening requirements in fire barriers & partitions and smoke barriers?
Thanks in advance.
910.2 Where required. Smoke and heat vents shall be installed in the roofs of one-story buildings or portions thereof occupied for the uses set forth in Sections 910.2.1 and 910.2.2. [F]
Exception: Group S-1 aircraft repair hangars.
910.2.1 Group F-1 or S-1. Buildings and portions thereof used as a Group F-1 or S-1 occupancy having more than 50,000 square feet (4645 m2) in undivided area. [F]
910.2.2 High-piled combustible storage. Buildings and portions thereof containing high-piled combustible stock or rack storage in any occupancy group in accordance with Section 413 and the International Fire Code. [F]
Commentary portion:
Large-area buildings with moderate to heavy fire loads present special challenges to the fire department in disposing of the smoke generated in a fire. In order to provide the fire department with the ability to rapidly and efficiently dispose of smoke in large-area Groups F-1 and S-1 buildings exceeding 50,000 square feet (4645 m2) in undivided area without the exposure of personnel to the dangers associated with cutting ventilation holes in the roof, smoke and heat vents (or, alternatively, mechanical smoke removal facilities) must be provided.
In order to subdivide a more than 50,000-square-foot (4645 m2) undivided area as one method of avoiding the use of smoke and heat vents, the dividing element would only need to be a partition constructed of materials equivalent to the construction of a draft curtain but that would extend from floor to ceiling in the space being separated. A fire barrier, smoke barrier, fire partition or smoke partition would be more than what is required and would therefore be an acceptable method of dividing the area.
This requirement is independent of the requirements related to high-piled storage in Section 910.2.2. Smoke and heat vent area requirements in Table 910.3 tend to be more restrictive for high-piled storage. High-piled storage is not occupancy specific.
Type 2B construction
Existing sprinklered 34,000 sf F-1/S-1 building with proposed sprinklered 25,000 sf F-1/S-1 building addition.
I would like to keep the areas divided, per 910.2.1 (listed below), to eliminate the need for smoke and heat vents.
The commentary (listed below) states “the dividing element would only need to be a partition constructed of materials equivalent to the construction of a draft curtain but that would extend from floor to ceiling in the space being separated. A fire barrier, smoke barrier, fire partition or smoke partition would be more than what is required and would therefore be an acceptable method of dividing the area.”
What are the requirements for the doors and air transfer openings? Do I use the requirements listed under Section 711 Smoke Partitions as they appear to be less strict than opening requirements in fire barriers & partitions and smoke barriers?
Thanks in advance.
910.2 Where required. Smoke and heat vents shall be installed in the roofs of one-story buildings or portions thereof occupied for the uses set forth in Sections 910.2.1 and 910.2.2. [F]
Exception: Group S-1 aircraft repair hangars.
910.2.1 Group F-1 or S-1. Buildings and portions thereof used as a Group F-1 or S-1 occupancy having more than 50,000 square feet (4645 m2) in undivided area. [F]
910.2.2 High-piled combustible storage. Buildings and portions thereof containing high-piled combustible stock or rack storage in any occupancy group in accordance with Section 413 and the International Fire Code. [F]
Commentary portion:
Large-area buildings with moderate to heavy fire loads present special challenges to the fire department in disposing of the smoke generated in a fire. In order to provide the fire department with the ability to rapidly and efficiently dispose of smoke in large-area Groups F-1 and S-1 buildings exceeding 50,000 square feet (4645 m2) in undivided area without the exposure of personnel to the dangers associated with cutting ventilation holes in the roof, smoke and heat vents (or, alternatively, mechanical smoke removal facilities) must be provided.
In order to subdivide a more than 50,000-square-foot (4645 m2) undivided area as one method of avoiding the use of smoke and heat vents, the dividing element would only need to be a partition constructed of materials equivalent to the construction of a draft curtain but that would extend from floor to ceiling in the space being separated. A fire barrier, smoke barrier, fire partition or smoke partition would be more than what is required and would therefore be an acceptable method of dividing the area.
This requirement is independent of the requirements related to high-piled storage in Section 910.2.2. Smoke and heat vent area requirements in Table 910.3 tend to be more restrictive for high-piled storage. High-piled storage is not occupancy specific.