Geotechnical Investigations for a Proposed Development of Hostels at Embu University – 2019
Introduction
In 2019, a geotechnical investigation was carried out for the proposed development of hostels at Embu University. The objective of this study was to assess the subsurface conditions and provide essential geotechnical data to support foundation design and construction planning. The investigation involved borehole drilling, Standard Penetration Tests (SPTs), groundwater level assessments, and laboratory testing of soil and rock samples.
Site Investigation and Methodology
A series of boreholes were drilled to retrieve soil and rock samples, enabling the identification of geological formations at the site. Standard Penetration Tests (SPTs) were conducted at different depths to evaluate soil strength, compaction levels, and load-bearing capacity. Groundwater table measurements were also taken to assess potential water-related challenges that might impact excavation and foundation stability.
Laboratory tests were performed on the collected samples to determine key engineering properties, including Atterberg limits, moisture content, grain size distribution, shear strength, and compressive strength of rock materials. These tests provided crucial insights into the behavior of the subsurface materials, guiding appropriate foundation recommendations.
Findings and Recommendations
The investigation revealed a mix of clayey and sandy soils overlaying weathered rock, with some sections exhibiting moderate plasticity. The SPT results indicated variable soil strengths across the site, necessitating a careful selection of foundation solutions. The groundwater table was detected at moderate depths, emphasizing the need for efficient drainage systems to prevent water-related complications.
Based on the findings, it was recommended that either raft foundations or deep pile foundations be adopted, depending on the structural load requirements. Additionally, soil stabilization techniques were suggested in areas with weaker soils to enhance bearing capacity and mitigate settlement risks. Proper waterproofing measures were also recommended to safeguard against moisture ingress.
Conclusion
The geotechnical investigation for the proposed hostel development at Embu University provided valuable data for foundation design and construction planning. Through borehole drilling, SPTs, groundwater analysis, and laboratory testing, the study ensured the structural integrity and long-term stability of the project. Conducting comprehensive geotechnical assessments remains a critical step in achieving safe and resilient construction in Embu’s dynamic geological environment.
0 Comments