6.2.1.3.(1)ATTRIBUTION:
Functional Statement:
F23
To maintain equipment in place during structural movement.
Objective:
OS3.1
APPLICATION:
Design and installation of mechanical systems and
equipment to accommodate relative structural movement, in buildings described in Sentence
1.3.3.2.(1) of Division A.
This also applies to buildings to which Part 9 applies [see Sentence
1.3.3.3.(1) of Division A for application
of Part 9], with respect to:
- mechanical ventilating systems other than self-contained systems serving single dwelling units, as stated in Sentence 9.32.1.2.(2),
- the ventilation of storage garages for more than 4 motor vehicles in residential occupancies, as stated in Sentence 9.32.1.1.(3),
- the ventilation of all occupancies other than residential occupancies, as stated in Sentence 9.32.1.1.(2),
- heating systems, including requirements for combustion air, and air-conditioning systems other than those serving individual dwelling units, as stated in Sentence 9.33.1.1.(2), and
- air duct distribution systems serving heating systems in which the rated heat input exceeds 120 kW, as stated in Sentence 9.33.6.1.(2).
INTENT:
To limit the probability that an inadequate design will
lead to an inability to accommodate relative structural movement [caused by,
for example, expected deflection of structural members, vibration or impact,
or earthquake loads], which could lead to toppling of equipment, which could
lead to harm to persons.
ATTRIBUTION:
Functional Statement:
F51
To maintain appropriate air and surface temperatures.
F63
To limit moisture condensation.
F50
To provide air suitable for breathing.
Objective:
OH1.1, OH1.2, OH1.3
APPLICATION:
Design and installation of mechanical systems and
equipment to accommodate relative structural movement, in buildings described in Sentence
1.3.3.2.(1) of Division A.
This also applies to buildings to which Part 9 applies [see Sentence
1.3.3.3.(1) of Division A for application
of Part 9], with respect to:
- mechanical ventilating systems other than self-contained systems serving single dwelling units, as stated in Sentence 9.32.1.2.(2),
- the ventilation of storage garages for more than 4 motor vehicles in residential occupancies, as stated in Sentence 9.32.1.1.(3),
- the ventilation of all occupancies other than residential occupancies, as stated in Sentence 9.32.1.1.(2),
- heating systems, including requirements for combustion air, and air-conditioning systems other than those serving individual dwelling units, as stated in Sentence 9.33.1.1.(2), and
- air duct distribution systems serving heating systems in which the rated heat input exceeds 120 kW, as stated in Sentence 9.33.6.1.(2).
INTENT:
To limit the probability that an inadequate design will
lead to an inability to accommodate relative structural movement [caused by,
for example, expected deflection of structural members, vibration or impact,
or earthquake loads], which could lead to damage to, or malfunction of, mechanical
systems or equipment installed in buildings, which could lead to the inadequate
control of:
- relative humidity or indoor air temperatures,
- surface temperatures,
- air velocity, or
- condensation.
This is to limit the probability of:
- the inadequate thermal comfort of persons, and
- contact with moisture.
This is to limit the probability of harm to persons.