Site Investigation | Optimal Foundation Based on Data for Built Homes on Embankment Land
Ground investigation
Ideal for subdivided built-for-sale houses on filled land! By conducting a preliminary site history analysis and soil quality assessment through SDS testing, we prevent excessive reinforcement, ensuring both safety and cost-effectiveness.
In the case of residential properties built on filled land, the unevenness of the thickness and compaction of the fill poses a risk of differential settlement, along with excessive ground reinforcement construction costs to mitigate this risk, which has become a significant challenge for builders. Geotech provides an advanced ground investigation solution that combines pre-history analysis based on past site plans and aerial photographs with high-precision penetration tests conducted on-site. The investigation employs the SDS test, which automatically identifies soil types from penetration torque, extracting the soil layer composition and settlement characteristics within the fill as objective numerical data. Furthermore, it conducts a comprehensive analysis of stress propagation at depths of 2m and 5m below the foundation, site elevation differences, and the continuity of compressible layers, calculating an optimal foundation design that eliminates excessive columnar improvements and steel pipe pile work. With a clear technical basis for the assessment report, the process of review and warranty is streamlined, achieving both safety assurance and construction cost reduction simultaneously.
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basic information
Using the SDS (Screw Driver Sounding) testing device, penetration load, torque values, and rotation speed are digitally recorded at 25 cm intervals through fully automated control. The soil classification of cohesive soils, sandy soils, and humus soils is automatically determined from both penetration resistance and rotational torque. The analysis simulates stress distribution and settlement within the influence range of 2 m and 5 m below the foundation, calculating the design soil bearing capacity while considering the number of years since construction and the surrounding elevation differences. It accommodates measurements up to a maximum depth of approximately 10 m and cross-references with a database of 100,000 cases annually.
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Applications/Examples of results
It is ideal for new ground surveys of subdivided residential properties and single-family homes in large-scale developed areas on hilly terrain and slopes, as well as on sites where fill and cut are unevenly present. It helps reduce excessive ground improvement costs in sites where subsiding layers are detected and is used to determine direct foundations and appropriate reinforcement specifications. Additionally, the clear judgment basis based on soil classification data is widely used as examination materials for ground guarantees and insurance, as well as safety explanation materials for potential buyers.
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