/
αi < 0.70

αi < 0.70

In TBDY 7.3.6.1 article, there is an explanation about the condition that the condition of columns being stronger than beams cannot be met in some columns.

7.3.6.1 - only carrier in the system consists of combination of or screen and frame by frame, considering the earthquake direction considered building any i in the 'th floor, Eq. (7.4) ' s with webs of condition related solid bottom and / or in some nodes above Equation Failure of (7.3) may be allowed.

                                                           α i = V is / V i ≥ 0.70                                                      (7.4)

This message is given if αi <0.7 given in Equations 7.4.

Solution:

Column and curtain dimensions should be increased until αi ≥ 0.7, and / or system stiffness should be increased by adding new columns and walls and the analysis should be repeated.


Next Topic

Column capacity ratio > 1

Related content

Conditions for Columns to be Stronger than Beams (Strong columns)
Conditions for Columns to be Stronger than Beams (Strong columns)
More like this
TBDY 7.6.6.2 there are shearwalls that do not meet the strong shearwall requirements
TBDY 7.6.6.2 there are shearwalls that do not meet the strong shearwall requirements
More like this
Story Dritf Determination for Columns and Walls (4.9)
Story Dritf Determination for Columns and Walls (4.9)
More like this
Determination of R and D Coefficients According to Carrier System Type
Determination of R and D Coefficients According to Carrier System Type
More like this