It is assumed that the fundamental period of reinforced concrete frame structure is located between Tg~5Tg of acceleration design response spectrum. How the fundamental period of structure T1 and bottom horizontal seismic action Fek would change, if the contribution of infilled wall to structural stiffness is considered during structural analysis? （A）T1↓, Fek↑ （B）T1↑, Fek↑ （C）T1↑, Fek↓ （D）T1↓, Fek↓
It is assumed that the fundamental period of reinforced concrete frame structure is located between Tg~5Tg of acceleration design response spectrum. How the fundamental period of structure T1 and bottom horizontal seismic action Fek would change, if the contribution of infilled wall to structural stiffness is considered during structural analysis? （A）T1↓, Fek↑ （B）T1↑, Fek↑ （C）T1↑, Fek↓ （D）T1↓, Fek↓
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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I. Single choice question
It is assumed that the fundamental period of reinforced concrete frame structure is located between
Tg~5Tg of acceleration design response spectrum. How the fundamental period of structure T1 and bottom
horizontal seismic action Fek would change, if the contribution of infilled wall to structural stiffness is
considered during structural analysis?
（A）T1↓, Fek↑ （B）T1↑, Fek↑ （C）T1↑, Fek↓ （D）T1↓, Fek↓
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