Site Investigation | Smart Foundation Explanation Techniques to Overcome Delivery Restrictions in Urban Small Lots
Ground investigation
Cleared the delivery restrictions in urban areas with limited space! Identified a solid support layer at a depth of 30 meters through self-propelled ram investigation, smartly optimizing pile length and gaining the client's trust.
In the construction plan for a steel frame building on a small site in an urban area with densely packed adjacent buildings, restrictions on the delivery of large boring machines and the narrow frontage with neighboring properties pose significant challenges to obtaining accurate ground data. This document explains a smart foundation explanation technique utilizing "self-propelled ram sounding surveys" that measures continuous ground data up to a depth of 30 meters using a self-propelled compact machine with a total width of 830 mm, optimizing the length of steel pipe piles. GeoTech's fully automated measurement system breaks through hard strata with powerful penetration capability from an automatic drop hammer, extracting high-precision data that has a strong correlation with standard penetration test N values through continuous Nd value data and torque correction processing. By measuring multiple points within the site, the inclination of the bearing layer and localized uneven ground are visualized in three dimensions, thoroughly eliminating excessive pile length designs and unnecessary impact construction. By presenting clear structural justifications, we facilitate the building confirmation review and structural conformity assessment, strongly assisting in optimizing construction costs and ensuring high accountability to project owners and clients.
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basic information
The specifications and features of this document are based on ground investigations and analysis processes using an automatic ram sounding test (self-propelled crawler machine with a total width of 830 mm). It is equipped with a steel hammer weighing 63.5 kg (with a drop height of 500 mm) for obtaining continuous impact penetration data (Nd values) at 200 mm intervals, as well as a standard automatic torque conversion algorithm for surface friction correction. It includes a correlation conversion formula to standard penetration test N values, support for a maximum measurement depth of 30 m, a 3D cross-section estimation function for stratigraphic irregularities and support layer inclinations, and specifications for issuing evaluation sheets for confirmation applications.
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Applications/Examples of results
It can be utilized for pile foundation design in the construction and renovation of urban steel frame buildings, mid-to-low-rise reinforced concrete structures, and stores in densely populated urban areas, as well as for acquiring structural calculation data. It is ideal for identifying deep supporting layers in sites with transportation restrictions where large boring machines cannot enter, reducing high costs of pile construction and impact work due to excessive design, and preventing errors in pile length caused by ground slope. Structural and sales personnel from design offices, general contractors, and residential builders can use it as a practical tool to smoothly present technical grounds to clients and review organizations, aiming to shorten construction schedules and improve project cost-effectiveness.
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