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9.20.3.2.(2)
OS2OP2OH1OS2OP2OS1
ObjectiveOS1 Fire Safety
Attribution
(b) [F21,F44-OS1.2] Applies to assemblies required to provide fire resistance.
Application
Application 1: 
Mortar for glass block protected from the exterior, in buildings to which Part 9 applies [see Sentence 1.3.3.3.(1) of Division A for application of Part 9].
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Intent
Intent 1: 
To limit the probability of inadequate mortar density, which could lead to the excessive shrinkage, cracking and premature failure of mortar joints.
Where masonry construction is required to provide fire resistance, this is to limit the probability of compromised fire resistance of the assembly, which could lead to harm to persons.
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