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4.1.8.11.(4)
OS2OP2
ObjectiveOS2 Structural Safety
Attribution
Application
Application 1: 
Formula for determining the weight of the building, W, to be used in calculating the base shear equivalent static force in Sentence 4.1.8.11.(2).
Exceptions: 
except as stated in Sentence 4.1.8.1.(1), which applies to areas where the spectral response acceleration amplified for site conditions equals the floor levels found in low seismicity regions with Site Class C (i.e. very dense soil and soft rock).
This applies to buildings described in Sentence 1.3.3.2.(1) of Division A and to buildings to which Part 9 applies [see Sentence 1.3.3.3.(1) of Division A for application of Part 9] that are required to be designed in accordance with the requirements of Part 4.
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Intent
Intent 1: 
To limit the probability that the calculation of loads due to earthquake will not take into account the full weight of the building, including storage and snow, supported by the structural elements, which could lead to structural failure, which could lead to harm to persons.
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