【For Architectural Design Offices】 Optimization of Pile Length for Steel Frame Buildings on Narrow Sites | Geotech
Ground investigation
Optimize pile length for small sites using neighboring data and on-site surveys.
In structural design at architectural firms, the construction of steel buildings on narrow urban sites often faces challenges due to the influence of adjacent buildings and road width restrictions, making it difficult to bring in large machinery. This can lead to an inability to accurately assess the slope of the supporting layer, resulting in excessive pile length design. Our ground investigation combines the analysis of neighboring data from our extensive ground information database "GEODAS," accumulated mainly in the metropolitan area, with precise on-site surveys using small self-propelled machines, to address these issues. By analyzing surrounding boring column diagrams and N-value distributions in advance, we conduct sounding tests tailored to site constraints during the on-site investigation. By correlating both sets of data, we identify complex layer thickness variations and the depth of local supporting layers, allowing us to calculate the optimal pile length without excess. This achieves a balance between reducing material and construction costs while ensuring the necessary allowable bearing capacity for the structure. 【Application Scenarios】 - Narrow urban sites - Sites with narrow access roads or delivery routes - Cases where adjacent buildings are in close proximity - Cases where the slope and depth of the supporting layer are unclear 【Benefits of Implementation】 - Cost reduction by preventing excessive design - Reliable assurance of the necessary bearing capacity for structures - Realization of ground investigations in confined spaces - Balancing safety and economy
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basic information
**Features** - High-precision identification of support layers through the fusion of neighborhood data analysis and on-site surveys - Capability to handle narrow sites with compact and space-saving survey equipment - Automatic measurement functions for continuous impact data and rotational torque at various depths - High-precision calculation of N values and layer thickness of deep support layers, as well as penetration resistance values of intermediate layers - Consistent support from survey proposals to structural calculations **Our Strengths** Geotec provides "total ground services," offering a one-stop solution for all tasks related to "ground," including ground surveys and reinforcement design/construction for new buildings, settlement correction work for existing structures, and soil contamination investigations. With extensive experience and reliable technology, we create the future of cities from the ground up.
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Applications/Examples of results
It is ideal for the foundation design practice of mid- to low-rise steel buildings, mixed-use residential buildings, and apartment complexes constructed in densely populated urban areas or on small lots. It demonstrates its effectiveness in sites where adjacent buildings are extremely close, making it difficult to position large boring equipment, or in conditions where small transportation is required due to road conditions. It contributes to the decision-making of design offices and contractors who want to capture the slope of the bearing layer in sites with limited investigation areas, preventing unnecessary extension of pile lengths and inappropriate under-design. It can be widely utilized in architectural projects aiming to reduce pile construction costs while ensuring safety.
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