Back9.4.4.3.(1)

ATTRIBUTION:

Functional Statement:

F20

To support and withstand expected loads and forces.

F20

To support and withstand expected loads and forces.

Objective:

OS2.2, OS2.3

 

APPLICATION:

Design capacity of foundations, in buildings to which Part 9 applies [see Sentence 1.3.3.3.(1) of Division A for application of Part 9], where the foundation bears on gravel, sand or silt, and the water table is within a distance below the bearing surface equal to the width of the foundation.

INTENT:

For coarser soil types near the footings' bearing surface (for which free water between soil particles can reduce bearing capacity), to limit the probability of excessive soil subsidence, which could lead to the cracking of foundations or building superstructures.
This is to limit the probability of compromised structural integrity, which could lead to:
  • structural failure, or
  • for environmental separators or elements supporting environmental separators, 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:

F20

To support and withstand expected loads and forces.

F20

To support and withstand expected loads and forces.

Objective:

OP2.2, OP2.4, OP2.3

 

APPLICATION:

Design capacity of foundations, in buildings to which Part 9 applies [see Sentence 1.3.3.3.(1) of Division A for application of Part 9], where the foundation bears on gravel, sand or silt, and the water table is within a distance below the bearing surface equal to the width of the foundation.

INTENT:

For coarser soil types near the footings' bearing surface (for which free water between soil particles can reduce bearing capacity), to limit the probability of excessive soil subsidence, which could lead to the cracking of foundations or building superstructures.
This is to limit the probability of compromised structural integrity, which could lead to:
  • structural failure,
  • for environmental separators or elements supporting environmental separators, 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
    • excessive deformation or deflection of walls, or
    • excessive deflection or vibration of floors.
This is to limit the probability of:
  • the space being unsuitable for its intended use, or
  • damage to the building.

ATTRIBUTION:

Functional Statement:

F20

To support and withstand expected loads and forces.

Objective:

OH1.1, OH1.2, OH1.3

 

APPLICATION:

Design capacity of foundations, in buildings to which Part 9 applies [see Sentence 1.3.3.3.(1) of Division A for application of Part 9], where the foundation bears on gravel, sand or silt, and the water table is within a distance below the bearing surface equal to the width of the foundation.

INTENT:

For coarser soil types near the footings' bearing surface (for which free water between soil particles can reduce bearing capacity), to limit the probability of excessive soil subsidence, which could lead to the cracking of foundations or building superstructures.
Where foundations support or are part of an environmental separator, this is to limit the probability of:
  • pollutant ingress (from the exterior or from adjacent interior space, including soil gas, combustion products from parking garages, and particulates),
  • precipitation ingress,
  • condensation, or
  • moisture ingress from the ground.
This is to limit the probability of:
  • an inadequate control of relative humidity or water accumulation,
  • the generation of pollutants from biological growth or from materials that become unstable on wetting, or
  • deterioration, which could lead to compromised integrity of elements supported by foundation walls.
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:

F20

To support and withstand expected loads and forces.

Objective:

OH4

 

APPLICATION:

Design capacity of foundations, in buildings to which Part 9 applies [see Sentence 1.3.3.3.(1) of Division A for application of Part 9], where the foundation bears on gravel, sand or silt, and the water table is within a distance below the bearing surface equal to the width of the foundation.

INTENT:

For coarser soil types near the footings' bearing surface (for which free water between soil particles can reduce bearing capacity), to limit the probability of excessive soil subsidence, which could lead to the cracking of foundations or building superstructures.
This is to limit the probability of:
  • compromised structural integrity, or
  • for environmental separators or elements supporting environmental separators, 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.
For floors and elements supporting floors, this is to limit the probability of excessive movement, deflection or vibration of floors, which could lead to negative effects on the psychological well-being of persons.

ATTRIBUTION:

Functional Statement:

F20

To support and withstand expected loads and forces.

Objective:

OS3.1

 

APPLICATION:

Design capacity of foundations, in buildings to which Part 9 applies [see Sentence 1.3.3.3.(1) of Division A for application of Part 9], where the foundation bears on gravel, sand or silt, and the water table is within a distance below the bearing surface equal to the width of the foundation.

INTENT:

For coarser soil types near the footings' bearing surface (for which free water between soil particles can reduce bearing capacity), to limit the probability of excessive soil subsidence, which could lead to the cracking of foundations or building superstructures.
This is to limit the probability of:
  • compromised structural integrity, or
  • for environmental separators or elements supporting environmental separators, 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.
For floors and elements supporting floors, this is to limit the probability of excessive deflection or vibration, which could lead to a loss of balance, tripping or falling, which could lead to harm to persons.