Inter-story drift limit for the fourth story of a six-story building.
To estimate the failure ID for any story, follow these summarized steps:
- Assume the columns of the considered story are fixed at their lower ends.
- Apply gravity loads to the considered and higher stories.
- Perform a displacement-controlled pushover analysis to find the inter-story drift (ID) leading to collapse.
- Calculate the stiffness-reduction factor for each column using the failure ID tool.
- Find the ID magnification factor by comparing fully-fixed and partially-fixed column stiffness.
- Multiply the ID from step 3 by the magnification factor to obtain the failure ID.
Make sure to verify the values as explained by Sultana and Youssef (2016).
For more information, please refer to:
Sultana, P., Youssef M.A., 2016, “Prediction of local seismic damage in steel moment resisting frames”, Journal of Constructional Steel Research, 122: 122-137.
Youssef M.A., Elfeki M.A., 2013, “Predicting Local Seismic Damage of RC Framed Buildings considering the Horizontal Seismic Component”, Magazine of Concrete Research, 65(23): 1411-1428.
DISCLAIMER
Simplex Engineering Inc. is not liable for any actual designs based on information from this site. Design engineers are responsible for complying with professional engineering regulations and adhering to applicable design standards, codes, and practices. We welcome the opportunity to collaborate on structural engineering projects. Don’t hesitate to contact us for more information about our services and fees.