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4.1.8.4.(4)
ApplicationIntent
OS2OP2
ObjectiveOS2 Structural Safety
Attribution
[F20-OS2.1]
Application
Application 1: 
Acceleration- and velocity-based site coefficients, Fa and Fv, to be used in earthquake calculations.
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 effects due to earthquake will not take into account the properties of the site response, which could lead to structural failure, which could lead to harm to persons.
Intent 2: 
To clarify how intermediate values of the acceleration- and velocity-based site coefficients, Fa and Fv, are to be determined.
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