The Provisions consider a building’s seismicity and its Seismic Use Group and assign it to a _____ in order to define its seismic safety requirements.

Possible Answers:

  1. Seismic Design Category
  2. Requirements Category
  3. Seismic Risk Category
  4. Provisions Category

The Correct Answer:

A. The Provisions consider a building’s seismicity and its Seismic Use Group and assign it to a Seismic Design Category in order to define its seismic safety requirements.

Explanation:

The provisions utilize Seismic Design Categories to identify the classification of seismic response for which a building should be designed. The Seismic Design Categories are hazard-free and complement the structure’s significance.

The design category of a particular structure is established to utilize a table that connects design acceleration to the Seismic Use Group ratings of a building.  There are around six Seismic Design Categories:

  1.  Seismic Design Category A is responsible for representing the regions where the motions in the ground are very minute.
  2.  Seismic Design Category B represents the structures in the regions where the ground shaking possibility is moderate. This category uses  Group I and II structures that must be designed by determining the NEHRP Provisions Maps 1.
  3. Seismic Design Category C represents the structures in the regions where the ground shaking possibility is moderate.

    Sometimes they can also be severe,  and that is why the non-structural components are undertaken to design for the seismic resistance.  The group III structures are included along with   Group I and II structures.
  4.  Seismic Design Category D represents the region with a high possibility of experiencing destructive ground shaking. This category includes Groups I, II, and III, and severe limits are put on some structural systems. The dynamic analysis technique places a vital role in the designing process and is also used in analyzing irregular structures.
  5. Seismic Design Category E  represents regions with a high possibility of major active faults.
  6. Seismic Design Category F represents regions with severe limitations, irregularities, and improper design methods. The provisions generally trigger the maximum area, which has a very high earthquake spectral response, for a very long period.
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