Back9.19.2.1.(2)

ATTRIBUTION:

Functional Statement:

F82

To minimize the risk of inadequate performance due to improper maintenance or lack of maintenance.

Objective:

OH1.1, OH1.2

 

APPLICATION:

In buildings to which Part 9 applies [see Sentence 1.3.3.3.(1) of Division A for application of Part 9], minimum size of access hatches to attic or roof spaces that measure:
  • not less than 3 m2 in area,
  • not less than 1 m in length or width, and
  • not less than 600 mm in height over an area not less than 3 m2 and not less than 1 m in length or width.

INTENT:

To limit the probability of:
  • the deterioration of building components going undetected, which could lead to
    • condensation and the accumulation of moisture, or
    • the formation of ice dams, or
  • the need to demolish building components in order to gain access.
This is to limit the probability of:
  • the ingress of water, or
  • compromised thermal performance of components intended to provide resistance to heat transfer.
This is to limit the probability of:
  • an inadequate control of the temperature of interior spaces or relative humidity,
  • the generation of pollutants from biological growth or from materials that become unstable on wetting, or
  • deterioration, which could lead to compromised integrity of ceilings acting as environmental separators.
This is to limit the probability of:
  • negative effects on the air quality of indoor spaces, and
  • the inadequate thermal comfort of persons.
This is to limit the probability of harm to persons.

ATTRIBUTION:

Functional Statement:

F82

To minimize the risk of inadequate performance due to improper maintenance or lack of maintenance.

Objective:

OS2.3

 

APPLICATION:

In buildings to which Part 9 applies [see Sentence 1.3.3.3.(1) of Division A for application of Part 9], minimum size of access hatches to attic or roof spaces that measure:
  • not less than 3 m2 in area,
  • not less than 1 m in length or width, and
  • not less than 600 mm in height over an area not less than 3 m2 and not less than 1 m in length or width.

INTENT:

To limit the probability of:
  • the deterioration of building components going undetected, which could lead to:
    • condensation and the accumulation of moisture, or
    • the formation of ice dams, or
  • the need to demolish building components in order to gain access.
This is to limit the probability of structural damage, which could lead to harm to persons.