Method for Analyzing Uneven Ground Settlement at the Site of Demolished Wooden Apartment Buildings for Architectural Design
Boring survey
Measured the uneven ground of the demolition site using multiple-point SWS tests to reduce the risk of differential settlement.
In architectural design, particularly in structural design, it is essential to accurately understand the characteristics of the ground to ensure the safety and long-term quality of buildings. Especially in the case of sites where wooden apartments have been demolished, the presence of remnants of old foundations and the unevenness of backfill can lead to the formation of "uneven ground," where the ground strength varies by location, increasing the risk of differential settlement after new construction. To prevent this risk, detailed ground surveys and appropriate analyses are indispensable. This service provides ground survey methods to identify the settlement risks associated with uneven ground at demolition sites. By conducting screw weight penetration tests (SWS tests) at multiple points, we can measure penetration resistance values in detail at various depths and continuously collect data on the hardness and softness of soil layers and the bias of self-sinking layers. Based on the acquired data, we evaluate the comparison of penetration resistance values between measurement points and estimate the deformation angle (tilt of the building) to quantify future settlement behavior. 【Usage Scenarios】 - New construction plans on sites of demolished wooden apartments - Sites where uneven ground is a concern - Assessment of differential settlement risks and development of countermeasures 【Benefits of Implementation】 - Avoidance of ground troubles specific to demolition sites - Provision of high structural safety and quality evidence - Support for the longevity of buildings and preservation of asset value
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【Features】 - Multifaceted measurement of heterogeneous ground through multi-point SWS testing - Evaluation of differential settlement risk through deformation angle analysis between measurement points - Continuous data collection of penetration resistance values by depth and stratum evaluation - Proposal of optimal ground reinforcement plans considering building loads and years of service - Calculation of allowable bearing capacity using the Inada method equivalent N-value and multifaceted evaluation based on three items and eight elements 【Our Strengths】 Geotech provides "total ground services," offering a one-stop solution for all ground-related tasks, from ground surveys, reinforcement design, and construction during new building projects to settlement correction work for existing buildings and soil contamination investigations. With extensive experience and reliable technology, we create the future of cities from the ground up.
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It is ideal for ground evaluation of newly constructed wooden houses and apartment buildings on the sites of demolished wooden apartments or on uneven ground after the removal of old foundations. It is used to understand local differences in ground bearing capacity and the risk of uneven consolidation settlement in sites that have been filled or are under construction. Additionally, it can be utilized for determining the suitability of direct foundations such as strip foundations and mat foundations, as well as for selecting methods and calculating design bases for ground reinforcement work when surface ground improvement, columnar improvement, or small-diameter steel pipe piles are necessary. It is widely used as reference material during structural calculations in design offices and construction companies, as well as evidence for submission to ground warranty organizations.
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