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3.3.1.3.(4) | Application | Intent |
| OS3 | + |
| Objective | OS3 Safety in Use |
| Attribution | |
| Application | Application 1: Minimum number of separate means
of egress from a roof, where a roof is used or intended for an occupant load more than 60, to exit stairs
designed in conformance with Section 3.4., in buildings described
in Sentence 1.3.3.2.(1) of Division A. |
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| Intent | Intent 1: To limit the probability of delays in the evacuation or
movement of persons to a safe place in the event that one of the means of
egress becomes obstructed or inaccessible in an emergency, which could lead
to harm to persons. Intent 2: To limit the probability that emergency responders will
be delayed or ineffective in carrying out their emergency response operations
in the event that one of the means of egress becomes obstructed or inaccessible
in an emergency, which could lead to delays in the evacuation or movement
of persons to a safe place, which could lead to harm to persons.
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