9.29.5.8.(1)

Intent 1:

To limit the probability of inadequate support for gypsum board, which could lead to an inability to resist expected gravity loads.

This is to limit the probability of the deformation or detachment of interior finishes, which could lead to:

• where interior finishes are required to protect foamed plastics, a loss of fire protection, or
• where interior finishes are installed to contribute to the required fire resistance of assemblies, a loss of fire resistance.

This is to limit the probability of compromised fire resistance of ceiling finishes, which could lead to insufficient fire resistance, which could lead to the growth and spread of fire, which could lead to damage to the building.