Settlement correction work｜Partial jack correction of settlement cracks in the fabric foundation through SWS investigation.
Subsidance correction work
Accurate clarification of partial subsidence and cracks in the foundation through SWS investigation! We will safely restore it by reducing costs with efficient jack adjustments.
This proposal is a settlement correction method that effectively repairs partial subsidence and cracking issues in strip foundations without incurring excessive construction costs. By conducting a preliminary SWS (Screw Weight Insertion) test, we can pinpoint the specific soft layers or subsidence areas causing the settlement. By applying a "partial jack-up method" that selectively lifts and corrects only the necessary areas without jacking up the entire building, we minimize construction equipment and personnel, achieving significant cost reductions. Furthermore, for structural cracks in the foundation, we combine high-viscosity epoxy resin injection and carbon fiber sheet reinforcement to significantly enhance the durability and toughness of the foundation structure beyond the level of new construction. If necessary, we will implement deep pile driving or pressure slab methods to completely contain the risk of future settlement recurrence. This method is chosen by many contractors and clients as a rational option that balances smart cost management with reliable safety structures and the preservation of the building's asset value.
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basic information
This construction method is specifically designed for correcting partial subsidence in wooden single-family homes (with a cloth foundation). As a preliminary ground survey, the SWS (Screw Weight Penetration) test is employed to understand localized soft ground data. The lifting system uses lightweight, compact multi-stage hydraulic jacks and manual or electric hydraulic pumps. For structural reinforcement, we prepare epoxy resin injection materials, various sealants for U-cuts, and carbon fiber sheets (such as the Ganko Oyaji method). To address ongoing subsidence, we will select and install STK small-diameter steel pipes (with diameters ranging from 101.6mm to 139.8mm) and steel pressure plates (with a thickness of 12mm or more) according to site conditions.
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It is very suitable for renovation work on single-family homes where localized subsidence or cracks in the foundation have occurred, and where repairs need to be carried out efficiently and safely within a limited budget. It is ideal for sites that do not require work on the entire building, as well as for clients and construction or renovation companies looking to manage risks while keeping costs down and addressing subsidence issues promptly. This approach allows for simultaneous ground reinforcement and foundation crack repair, aiming to maintain asset value while enhancing the building's seismic performance and restoring its load-bearing capacity, as well as preventing further subsidence.
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