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4.1.8.15.(5)
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Application
Application 1: 
Design forces 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 4.1.8.15.(6), which applies where foundation rocking is accounted for in the design.
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 supersede the requirements of Article 4.1.8.11., which applies to the Equivalent Static Force Procedure, and of Article 4.1.8.12., which applies to the Dynamic Analysis Procedure, and provide upper limits on the application of the principles of capacity design, such that the design forces need not exceed those corresponding to elastic response.
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