Firestopping Book Firestopping Book | Page 27

In National Building Code 2016 terms, compartmentation is designed under part 4, clause 2.21 - “A space within a building that is enclosed by fire barrier or fire-resistant walls on all sides, including the top and bottom.” The fire resistance capacity of the compartmentalized wall and, or floor is its ability to: ■ ■ ■ ■ ■ ■ Maintain integrity Provided insulation resistance against excessive heat transfer Prevent the structure against collapse. Compartmentation in a building is achieved by various systems, however, the key systems to affect the compartmentalization are as follows: Fire Barriers - Fire Barriers are interior walls that extend from floor to the roof or floor to floor, including concealed spaces. Fire Barriers are intended to sub-divide the portions of the buildings for preventing the spread of fire throughout the structure. In terms of NBC 2016, Fire Barriers are defined as follows: “A fire barrier is a vertically or horizontally aligned fire-resistant member such as a wall or a fire curtain, or a floor. These may be with discontinuities created by openings with a specified fire resistance rating, where such members are designed and constructed with a specified fire resistance rating to limit the spread of a fire that also restricts the movement of smoke.” 27