The containment of smoke: (2) Zoned smoke control When zoned smoke control is to be used to provide containment, the building shall be divided into smoke control zones, with each zone separated from the others by smoke barriers.
ZONED SMOKE CONTROL CONCEPT The methods that can be used to treat the smoke zone are: (1) fan-powered exhaust, (2) passive smoke control using smoke barriers Fan-powered smoke exhaust is the most common method, and passive smoke control using smoke barriers may be satisfactory when fan powered exhaust is not practical.
2)passive smoke control using smoke barriers Where required by Chapters 11 through 43, smoke barriers shall be provided to subdivide building spaces for the purpose of restricting the movement of smoke.
ZONED SMOKE CONTROL CONCEPT
The containment of smoke: (3) Elevator pressurization
The containment of smoke: (4) Vestibule ( lobby) pressurization
The containment of smoke: (5) Smoke refuge area pressurization
Where smoke control shall provided? 1. Smoke Control systems in Atriums
1. Smoke Control systems in Atriums:
The management of smoke: The design approach for smoke management within large- volume spaces and communicating spaces shall be one of or a combination of the following: (1) Natural smoke filling of an unoccupied volume or smoke reservoir.
The management of smoke: (2)Mechanical smoke exhaust: Mechanical smoke exhaust capacity to remove smoke from a space to maintain the smoke layer interface at a predefined height in the space for the design interval time.
The management of smoke: (3) Gravity smoke venting:
Where smoke control shall provided?
3.Underground and Limited Access Structures: A structure or portion of a structure that does not have Emergency access openings in compliance with 11.7.3.2 shall be designated as a limited access structure and shall comply with 11.7.3.4 and 11.7.3.5.
Emergency access openings: A structure or portion of a structure that does not have openings in compliance with 11.7.3.1.1 and 11.7.3.1.2 shall be designated as a limited access structure and shall comply with 11.7.3.4 and 11.7.3.5.
Open Structure building:
3.Underground and Limited Access Structures:
Additional Provisions for Underground Structures. 11.7.4.2 Exits from underground shall be provided with outside smoke-venting structures with: Facilities or other means to prevent the exits from becoming charged with smoke from any an occupant load of more than fire in the areas served by the exits. 100 persons in the underground portions of the structure and having a floor used for human occupancy located more than 30 ft (9.1 m) below the lowest level of exit discharge. OR having more than one level located below the lowest level of exit discharge.
Additional Provisions for Underground Structures. 11.7.4.3 The underground portions of an underground structure shall be provided with approved automatic smoke venting in accordance with NFPA 92 where the underground structure has the following features: (1) Occupant load of more than 100 persons in the underground portions of the structure (2) Floor level used for human occupancy located more than 30 ft (9.1 m) below the lowest level of exit discharge, Or more than one level located below the lowest level of exit discharge (3) Combustible contents, combustible interior finish, or combustible construction.
Thank You For Your Attention
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