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4.1.8.9.(1) | Application | Intent |
| OS2 | OP2 |
| Objective | OS2 Structural Safety |
| Attribution | |
| Application | Application 1: Ductility-related, Rd, and overstrength-related,
Ro, force modification factors applicable to the building structure
to be used in calculating the base lateral earthquake force, V, in Sentence 4.1.8.11.(2), and the base lateral earthquake force (dynamic analysis),
Vd, in Sentence 4.1.8.12.(5). Application 2: Building height restrictions
based on the Seismic Force Resisting System and the modified short and long
period spectral design accelerations.
Exceptions:
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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 properties of the structural
system [i.e. lack of ductility, energy absorption and overstrength], which
could lead to structural failure, which could lead to harm to persons.
Intent 2: To limit the probability that the lateral-force-resisting
system chosen for the design will not have a minimum ductility, integrity,
and overstrength to absorb local failure due to maximum expected seismic ground
motions, which could lead to structural failure, which could lead to harm
to persons. |
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