Irregularity Check Parameter

To select the calculation method for story irregularity check.

From the Main Menu select Results > Result Tables > Story > Irregularity Check Parameter

Select Result Tables > Story > Irregularity Check Parameter in the Tables tab of the Tree Menu.

Select Calculation Method Dialog Box

Country Code: Select the code for story Irregularity check

   1. KBC2009

   2. NTC2008   

Story Drift Method (Stiffness Irregularity Parameters)

1. Drift at the Center of Mass

Difference in lateral displacements at the centers of masses of two consecutive stories

2. Maximum Drift of Outer Extreme Points

Maximum story drift among the story drifts at all the outer extreme corner nodes to which vertical elements connect.

3. Maximum Drift of All Vertical Elements

Maximum story drift among the story drifts at all nodes to which vertical elements connect.

Story Stiffness Method

1. 1/Story Drift Ratio

Display the story stiffness as an inverse number of story drift ratio.

2. Story Shear/Story Drift

Display the story stiffness as a ratio of story shear to story drift.