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9.6.8.9.(1) | Application | Intent |
OS4 |
Objective | OS4 Resistance to Unwanted Entry |
Attribution | |
Application | Application 1: Solid blocking for swinging doors, in buildings to
which Part 9 applies [see Sentence 1.3.3.3.(1) of Division A for application
of Part 9]:
Exceptions:
except as stated in Sentence 9.6.8.10.(1), which applies to
doors constructed to a security level of at least Grade 10 in accordance with
the Annex to ASTM F 476.
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Intent | Intent 1: To limit the probability of inadequate support of locks,
which could lead to an inability to resist loads imposed by intruders trying
to spread the frame away from the door, which could lead to forcing bolts
from their strike plates, which could lead to unwanted entry, which could
lead to harm to persons. |
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