Back9.3.2.9.(4)

ATTRIBUTION:

Functional Statement:

F80

To resist deterioration resulting from expected service conditions.

Objective:

OS2.3, OS2.5

 

APPLICATION:

Pressure treatment--with a preservative--of structural wood elements in retaining walls and cribbing, where:
  • the retaining wall or cribbing supports ground that is critical to the stability of building foundations, or
  • the retaining wall or cribbing is greater than 1.2 m in height.
This applies to buildings to which Part 9 applies [see Sentence 1.3.3.3.(1) of Division A for application of Part 9].

INTENT:

To limit the probability of wood decay.
This is to limit the probability of compromised structural integrity, which could lead to:
  • structural failure, or
  • where the cribbing or retaining walls support an environmental separator, the displacement or failure of required environmental separation elements, which could lead to the deterioration of building elements.
This is to limit the probability of harm to persons.

ATTRIBUTION:

Functional Statement:

F80

To resist deterioration resulting from expected service conditions.

Objective:

OP2.3, OP2.4, OP2.5

 

APPLICATION:

Pressure treatment--with a preservative--of structural wood elements in retaining walls and cribbing, where:
  • the retaining wall or cribbing supports ground that is critical to the stability of building foundations, or
  • the retaining wall or cribbing is greater than 1.2 m in height.
This applies to buildings to which Part 9 applies [see Sentence 1.3.3.3.(1) of Division A for application of Part 9].

INTENT:

To limit the probability of wood decay.
This is to limit the probability of compromised structural integrity, which could lead to:
  • structural failure,
  • where the cribbing or retaining walls support an environmental separator, the displacement or failure of required environmental separation elements, which could lead to the deterioration of building elements, which could lead to further compromised structural integrity, or
  • an inability to resist expected loads, which could lead to
    • the excessive deformation or deflection of walls, or
    • the excessive deflection or vibration of floors.
This is to limit the probability of:
  • the space being unsuitable for its intended use,
  • compromised operation of windows and doors, and
  • damage to the building.

ATTRIBUTION:

Functional Statement:

F80

To resist deterioration resulting from expected service conditions.

F61

To resist the ingress of precipitation, water or moisture from the exterior or from the ground.

F55

To resist the transfer of air through environmental separators.

F80

To resist deterioration resulting from expected service conditions.

F61

To resist the ingress of precipitation, water or moisture from the exterior or from the ground.

Objective:

OH1.1, OH1.2, OH1.3

 

APPLICATION:

Pressure treatment--with a preservative--of structural wood elements in retaining walls and cribbing, where:
  • the retaining wall or cribbing supports ground that is critical to the stability of building foundations, or
  • the retaining wall or cribbing is greater than 1.2 m in height.
This applies to buildings to which Part 9 applies [see Sentence 1.3.3.3.(1) of Division A for application of Part 9].

INTENT:

To limit the probability of wood decay.
Where cribbing or retaining walls support an environmental separator, this is to limit the probability of the compromised performance of the building envelope, which could lead to:
  • condensation,
  • precipitation ingress, or
  • compromised thermal performance of components intended to provide resistance to heat transfer.
This is to limit the probability of:
  • an inadequate control of indoor air and surface temperatures, drafts, relative humidity, or water accumulation,
  • the generation of pollutants from biological growth or from materials that become unstable upon wetting, or
  • deterioration, which could lead to further compromised integrity of environmental separators.
This is to limit the probability of:
  • negative effects on the air quality of indoor spaces,
  • the inadequate thermal comfort of persons, and
  • contact with moisture.
This is to limit the probability of harm to persons.

ATTRIBUTION:

Functional Statement:

F80

To resist deterioration resulting from expected service conditions.

Objective:

OH4

 

APPLICATION:

Pressure treatment--with a preservative--of structural wood elements in retaining walls and cribbing, where:
  • the retaining wall or cribbing supports ground that is critical to the stability of building foundations, or
  • the retaining wall or cribbing is greater than 1.2 m in height.
This applies to buildings to which Part 9 applies [see Sentence 1.3.3.3.(1) of Division A for application of Part 9].

INTENT:

To limit the probability of wood decay.
This is to limit the probability of:
  • compromised structural integrity, or
  • where the cribbing or retaining walls support an environmental separator, the displacement or failure of required environmental separation elements, which could lead to the deterioration of building elements, which could lead to compromised structural integrity.
This is to limit the probability of:
  • the excessive deformation of walls, ceilings and roofs, and
  • the deflection or vibration of floors.
This is to limit the probability of negative effects on the psychological well-being of persons.

ATTRIBUTION:

Functional Statement:

F80

To resist deterioration resulting from expected service conditions.

Objective:

OS3.1

 

APPLICATION:

Pressure treatment--with a preservative--of structural wood elements in retaining walls and cribbing, where:
  • the retaining wall or cribbing supports ground that is critical to the stability of building foundations, or
  • the retaining wall or cribbing is greater than 1.2 m in height.
This applies to buildings to which Part 9 applies [see Sentence 1.3.3.3.(1) of Division A for application of Part 9].

INTENT:

To limit the probability of wood decay.
This is to limit the probability of:
  • compromised structural integrity, or
  • where the cribbing or retaining walls support an environmental separator, the displacement or failure of required environmental separation elements, which could lead to the deterioration of building elements, which could lead to compromised structural integrity.
Where the cribbing or retaining walls support floors, this is to limit the probability of excessive deflection or vibration of floors, which could lead to persons losing their balance, tripping or falling, which could lead to harm to persons.

ATTRIBUTION:

Functional Statement:

F80

To resist deterioration resulting from expected service conditions.

Objective:

OS1.2

 

APPLICATION:

Pressure treatment--with a preservative--of structural wood elements in retaining walls and cribbing, where:
  • the retaining wall or cribbing supports ground that is critical to the stability of building foundations, or
  • the retaining wall or cribbing is greater than 1.2 m in height.
This applies to buildings to which Part 9 applies [see Sentence 1.3.3.3.(1) of Division A for application of Part 9].

INTENT:

To limit the probability of wood decay.
Where structural wood elements are used in assemblies that are required to provide fire resistance, this is to limit the probability of the compromised fire resistance of the assembly, which could lead to harm to persons.