Site Investigation | Visualization Survey of Ground Bearing Capacity to Optimize Pile Layout for New Building Construction on Demolition Site
Ground investigation
Visualizing ground resistance by overcoming underground obstacles during the construction of a new building on a demolition site! Preventing overdesign while simultaneously achieving optimal pile placement and cost reduction in construction.
This solution targets new building construction plans in demolition sites and redevelopment areas, providing high-precision ground consulting services that accurately visualize deep soil bearing capacity while eliminating the impact of underground obstacles and optimizing pile placement. In uneven fill and backfill ground mixed with old foundations and concrete debris, traditional simple surveys often fail to penetrate, leading to concerns about unexpected settlement risks and the tendency to choose overly conservative designs with excessive pile lengths and numbers due to inflated safety factors. Geotech employs a sounding test machine with high penetration capability to safely penetrate underground debris layers and obtain true bearing layer data up to a depth of 30 meters. By using automatic torque correction to negate the effects of side friction, we accurately digitize the effective N-value strength in 200mm increments. This data is directly linked to the superstructure calculation model to pinpoint the optimal pile placement and appropriate pile lengths. This approach completely prevents rework on-site and pile eccentricity issues, achieving reliable structural safety protection and construction cost reduction.
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basic information
This survey system employs a fully automatic penetration device equipped with a high-impact automatic drop hammer (mass 63.5 kg, drop height 500 mm). It can advance even through gravelly layers and hard ground, automatically measuring penetration resistance (Nd value) and rotational torque at 200 mm intervals up to a maximum exploration depth of 30 m. The acquired data undergoes fully automated rod surface friction correction calculations and is converted into high-precision standard penetration test N value data. It outputs the allowable vertical bearing capacity of the ground and estimated settlement amounts with millimeter-level accuracy.
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Applications/Examples of results
It is mainly used for the design of pile foundations and optimization of pile layout for new buildings and commercial facilities in urban sites with former factory and plant sites, redevelopment blocks after the demolition of existing buildings, and areas with uneven fill. It is ideal for sites where a large amount of debris and old foundations are mixed in the ground, raising concerns about difficulties during drilling or excessive reinforcement. It is widely adopted in projects that aim to accurately measure deep bearing capacity with actual data and completely prevent rework due to insufficient pile length or problems during construction.
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