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4.1.8.12.(8)
ApplicationIntent
OS2OP2
ObjectiveOS2 Structural Safety
Attribution
[F20-OS2.1]
Application
Application 1: 
Determination of the design values of elastic storey shears, storey forces, member forces and deflections whose values are obtained from a Linear Dynamic Analysis, to be used in the design of buildings for earthquake.
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 ), and
  • Sentence 4.1.8.12.(9), which applies to the calculation of deflections.
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 elastic storey shears, storey forces, member forces and deflections resulting from a Linear Dynamic Analysis will be proportioned in accordance with the design base shear, which could lead to structural failure, which could lead to harm to persons.
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