Geotechnical assessment for a residential site in Valenzuela City, Philippines

Summary

This report, prepared by the University of the Philippines Diliman in collaboration with TAMPEI, presents a preliminary geotechnical assessment of a proposed residential site in Valenzuela City, Philippines. It is based on soil investigation data from three boreholes conducted by Geoscience Technologies, Inc. The findings show that the site is underlain by soft silts and clay materials in the upper layers, with denser soils at deeper levels. The area is also submerged, with groundwater levels recorded above the ground surface.

The report includes settlement and bearing capacity analysis to guide safe construction. It shows that total settlement may range from about 900 mm to 1250 mm within 1 to 2.5 years. It recommends ground improvement through embankment filling, with minimum fill heights of 5 m to 5.5 m to create a stable platform. The analysis also supports the use of shallow foundations, with recommended bearing capacities of 90 kPa for housing and at least 130 kPa for other low-rise structures. These findings provide practical guidance for safe and stable site development.