Establishing the relationship between building height and foundation depth

This thesis investigates the relationship between optimal pile foundation depth and building height. Twenty-one building models of various heights were made using CSI ETABS. The models' base reactions were determined, and soil parameters were used to determine pile foundation depth using CSI SAFE. Microsoft Excel data analysis was used to develop an empirical equation relating pile depth to building height.

The study included relevant analyses, like base shear, story drift, and building modes. Soil parameters were determined based on SPT number. The effects of wind and seismic loads were investigated using international standards and Bangladesh design codes (BNBC 2020). The technique includes the steps for developing building models, applying loads, conducting analyses, and verifying member design.

The static and dynamic parameters obtained will be presented in the results section, together with natural frequencies, base shear values, and axial forces. The findings will be discussed, with a focus on the relationship between building height and pile depth requirements. If an equation is established, the validity and limitations will be discussed.

This thesis aims to advance the subject of geotechnical engineering by providing insights into pile foundation design for high-rise structures. The findings may be useful for engineers looking to improve foundation systems for safe and efficient building construction.