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Chapter 7 — Fire-Resistance Rated Construction
This chapter governs the materials and assemblies used for structural fire resistance and fire resistance rated construction separation of adjacent spaces to safeguard against the spread of fire and smoke within a building and the spread of fire to or from buildings.
Some of the main Sections include;
Smoke Partitions
There are two types of systems or methods for providing fire-resistive protection;
Definition of Fire- Resistance Rating
The period of time a building element, component or assembly maintains the ability to confine a fire, continues to perform a given structural function, or both, as determined by the tests, or the methods based on tests, prescribed in Section 703.
The fire-resistance rating of building elements, components or assemblies shall be determined in accordance with what standard?
The fire-resistance rating of building elements, components or assemblies shall be determined in accordance with the test procedures set forth in ASTM E 119 or UL 263 or in accordance with Section 703.3, Alternative Methods for Determining Fire Resistance.
Where materials, systems or devices that have not been tested as part of a fire- resistance-rated assembly are incorporated into the building element, component or
assembly, what must be done?
sufficient data shall be made available to the building official to show that the required fire-resistance rating is not reduced.
True or false
Materials and methods of construction used to protect joints and penetrations in fire-resistance-rated building
elements, components or assemblies shall not reduce the required fire-resistance rating.
True
Fire-Resistance Rating of Structural Members
True or false
The fire-resistance ratings of structural members and assemblies shall comply with this section and the requirements for the type of construction as specified in Table 601. The fire-resistance ratings shall not be less than the ratings required for the fire- resistance-rated assemblies supported by the structural members.
True
Exterior Walls
Fire Walls
A fire-resistance-rated wall having protected openings, which restricts the spread of fire and extends continuously from the foundation to or through the roof, with sufficient structural stability under fire conditions to allow collapse of construction on either side without collapse of the wall.
Fire Barriers
A fire-resistance-rated wall assembly of materials designed to restrict the spread of fire in which continuity is maintained, such as separate vertical exit enclosures from
other egress components, to separate different occupancies, or to divide a single occupancy into different fire areas.
Shaft Enclosures
Similar to fire barriers but typically enclose shafts extending through several floors.
Fire Partitions
A vertical assembly of materials designed to restrict the spread of fire in which openings are protected, typically a level below fire walls and fire barriers, and typically
have a 1 hour fire resistance rating.
Smoke Barriers
A continuous membrane, either vertical or horizontal, such as a wall, floor or ceiling assembly, that is designed and constructed to restrict the movement of smoke.
Smoke Partitions
Smoke partitions shall extend from the top of the foundation or floor below to the underside of the floor or roof sheathing, deck, or slab above or to the underside of the ceiling above where the ceiling membrane is constructed to limit the transfer of smoke.
Horizontal Assemblies
The fire-resistance rating of floor and roof assemblies shall not be less than that required by the building type of construction (Table 601).
Penetrations
Describes materials and methods of construction used to protect penetrations of horizontal assemblies and fire-resistance-rated wall assemblies.
Fire-Resistance Joint Systems
An assemblage of specific materials or products that are designed, tested and fire- resistance rated in accordance with either ASTM E 1966 or UL 2079 to resist for a
prescribed period of time the passage of fire through joints made in or between fire- resistance-rated assemblies (from seismic movement and construction control joints).
Opening Protectives
Protection of openings in fire-resistive construction allow the opening protectives to have different ratings than for the wall in which they are located. For example, a 2
hour fire rated wall requires a 1 1/2 hour-rated opening protection assembly
Ducts and Air Transfer Openings
Ducts and air transfer openings in assemblies required to be fire protected shall be treated to maintain fire resistance integrity of assembly or structure, such as fire
dampers and smoke dampers.
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Chapter 8— Interior Finishes
This chapter governs the use of materials used as interior finishes, trim, and decorative materials with an emphasis on flame spread and smoke generation characteristics.
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Chapter 9 — Fire Protection Systems
The provisions of this chapter shall specify where fire protection systems are required and shall apply to the design, installation, and operation of fire protection systems.
Fire protection systems include:
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Chapter 10 — Means of Egress
Definition of Means of Egress — A continuous and unobstructed path of vertical and horizontal egress travel from any occupied portion of a building or structure to a public way.
Some of the sections in this chapter include:
A means of egress consists of three separate and distinct parts:
Occupant Load
Design Occupant Load — Egress systems are to be designed based upon the number of occupants for a particular building type and in association with Table 1004.1.1 Maximum Floor Area Allowances Per Occupant.