Restoration of Tilted Buildings via Micropile Underpinning: A Case Study of a Multistory Building Supported by a Raft Foundation

This paper presents a real case study of micropiling process that was developed to stop the continuous tilting 9-story residential building in Dakahlia, Egypt. Shortly after construction building, surface raft foundation exhibited severe settlement problems. In order carry out geotechnical investigation, boreholes were drilled around constructed building. It discovered addition thick, soft clay layer soil profile, there also crucial eccentricity between centroid total loads and raft. The issue needed be addressed immediately, system proposed satisfy structural conditions associated with history. describing field measurements, detailed methodology, micropile installation process, this three different design approaches for determining number location micropiles. Although underpinning itself initially induced some settlement, proved an efficient solution A load test confirmed advantageous effect grouting technique used Type B micropiles, where grout is injected under high pressure.