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9.20.3.2.(2)
ApplicationIntent
OS2OP2OH1OS2OP2OS1
ObjectiveOS2 Structural Safety
Attribution
(a) [F21,F61,F55-OS2.1,OS2.3]
Application
Application 1: 
Mortar for glass block exposed to 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.
This is to limit the probability of compromised structural integrity, which could lead to:
  • structural failure, or
  • where masonry is exposed to precipitation, an inadequate resistance to moisture transfer, which could lead to excessive water ingress into or through assemblies, which could lead to the deterioration of elements protected by the masonry, which could lead to compromised structural integrity, which could lead to structural collapse.
This is to limit the probability of harm to persons.
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