【For Cultural Facilities】Ram Penetration Test for Steel Frame Buildings on Narrow Sites
Ground investigation
Supporting the establishment of a new gallery with high-precision ground surveys even in narrow spaces.
In the establishment of cultural facilities, particularly galleries, it is important to accurately understand the supporting layers of the ground for the stability of the building and long-term maintenance. In cases where the site is narrow or the front road is small, traditional ground surveys using large machinery become difficult, making it challenging to accurately grasp the depth of the supporting layers and the condition of the ground. This service uses a small self-propelled automatic ram sounding testing machine to smoothly conduct deep ground surveys even in such locations. This helps avoid excessive pile length design and contributes to rational structural design and cost reduction. 【Usage Scenarios】 - Construction of galleries on narrow urban sites - Sites where large machinery cannot be brought in due to narrow front roads - Situations requiring ground surveys in limited spaces 【Benefits of Implementation】 - High-precision understanding of supporting layers even on small sites - Cost reduction by preventing excessive pile length design - Assurance of high-quality ground reliability and trustworthiness
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【Features】 - Automatically drops a hammer weighing 63.5 kg from a height of 500 mm to measure the number of impacts (Nd value) for every 200 mm of penetration. - Capable of accurately assessing up to a maximum depth of 30 m, including hard strata equivalent to an N value of 50. - Automatically corrects for surrounding friction effects through the measurement of rotational torque during impact. - Provides data with a high correlation to standard penetration tests. - Space-saving design with a width of approximately 830 to 1000 mm and a height of approximately 2350 to 2570 mm. 【Our Strengths】 Geotec offers "total ground services," providing a one-stop solution for all ground-related tasks, from ground surveys, reinforcement design, and construction for new buildings to 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 ground surveys for the new construction of mid- to low-rise steel buildings, stores, and welfare facilities in narrow sites where large heavy machinery and 3-ton unic trucks have difficulty accessing, such as flagpole lots and densely populated urban areas. In particular, it is used to confirm the depth of the supporting layer when adopting methods such as steel pipe pile construction or small-diameter steel pipe construction with end wings (e.g., CPP method), as well as for cost optimization by preventing excessive pile lengths. Additionally, it can be widely utilized in practical applications, such as continuous confirmation of the inclination of the supporting layer at multiple locations as a supplementary survey to standard penetration tests, deep ground bearing capacity evaluation of uneven ground at demolition sites, and obtaining structural calculation data necessary for building confirmation applications.
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