Site Investigation | Smart Foundation Explanation Technique to Penetrate Obstacles in Demolition Sites and Determine Ground Bearing Capacity
Ground investigation
Drilled through the underground rubble layer of the demolition site! Measured the deep soil bearing capacity of the uneven ground to stop excessive reinforcement, providing evidence to the client and improving the contract rate.
In housing reconstruction plans on sites of existing building demolitions or historically significant residential land, issues frequently arise due to the presence of leftover concrete debris, remnants of old foundations, and uneven backfill soil, which make it difficult to accurately determine the ground bearing capacity. Insufficient preemptive measures for obstacles can lead to construction delays after work has begun and unexpected additional costs for ground reinforcement, resulting in disputes and distrust with the client. This document details a "Ground Assessment System for Demolition Sites" that uses robust crushing and penetration of buried obstacle layers to measure the true deep support layer, thereby stopping excessive reinforcement. Utilizing GeoTech's high-penetration impact mechanism and multi-point measurement technology, we accurately visualize the deep soil bearing capacity directly beneath the foundation without being affected by surface debris. By capturing the uneven ground structure of areas like basement remnants in three dimensions, we derive the optimal foundation type (flat foundation, partial reinforcement, various piling methods) that eliminates unnecessary piling work. We provide convincing explanations to clients through objective data that combines numerical values and diagrams, strongly supporting the improvement of contract rates and profit margins.
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basic information
The specifications and features of this document are based on the penetration and impact analysis of automatic ram sounding tests and dynamic cone penetration tests. It covers the penetration specifications for concrete debris and old foundation burial layers (equivalent to N value 50), an algorithm for surface friction correction based on rotational torque measurement, and a continuous measurement function for deep penetration resistance values (Nd values). It presents the evaluation of layer thickness for uneven backfill layers specific to demolition sites, site unevenness analysis using multi-point continuous data, and the output flow for ground assessment reports in response to confirmation applications.
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Applications/Examples of results
It can be utilized for determining foundation specifications in plans for rebuilding wooden houses, apartments, and stores on residential land after the demolition of existing buildings, on uneven backfilled ground, and on redevelopment sites. It is ideal for avoiding investigations that cannot be conducted due to underground obstacles, reducing unnecessary deep ground improvement costs associated with misjudgments of surface backfill layers, and visualizing the risk of subsidence from existing basement remnants. It can be used as a practical tool for sales and construction personnel of residential builders and contractors to logically explain the risks of obstacles and the validity of additional work to clients, facilitating rapid consensus building.
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