To resist deterioration resulting from expected
service conditions.
Objective:
OS3.1, OS3.7
APPLICATION:
Preservation of exterior wood steps or stairs in direct
contact with the ground, serving 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 deterioration at an unacceptable
rate, which could lead to steps becoming misaligned, which could lead to:
persons falling,
persons falling in an emergency, which could lead to delays
in the evacuation or movement of persons to a safe place.
This is to limit the probability of harm to
persons.
ATTRIBUTION:
Functional Statement:
F80
To resist deterioration resulting from expected
service conditions.
Objective:
OS2.3
APPLICATION:
Preservation of exterior wood steps or stairs in direct
contact with the ground, serving 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 premature deterioration of the
material, which could lead to structural failure, which could lead to harm
to persons.