[Construction Example] Raised the building by 6 meters to expand the lifting height of the crane inside the factory.
Construction method that does not stop factory operations" Electric Industry Co., Ltd. Kawagoe Factory "Lift-Up Method
The "Lift-Up Method" is a construction technique that raises a building while maintaining its seismic strength without dismantling the existing factory structure. In this project, we received a request to increase the crane lifting height due to the aging of the existing traveling crane. First, we conducted an investigation of the seismic resistance and strength of the existing building to confirm its current seismic resistance and strength. We determined that with reinforcement, it could withstand the elevation. During construction, we connected the columns of the raised portion to the existing column heads to enhance strength, and then, using the cover build method, we installed a new roof and walls before dismantling the existing roof from the inside. As a result, the crane lifting height was increased, contributing to improved work efficiency. 【Construction Targets】 ■ There are documents such as drawings and structural calculation sheets. ■ The foundation of the existing building has sufficient strength. *For more details, please refer to the PDF materials or feel free to contact us.
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【Construction Procedure】 ■First, attach the new column to the top of the existing column (corner extension). ■After extending the corners on both sides, place the beam across. ■While installing the new roof and walls, dismantle the original roof and beams. *For more details, please refer to the PDF document or feel free to contact us.
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For more details, please refer to the PDF document or feel free to contact us.
Company information
Yoshizawa Architectural Structural Design Co., Ltd. is a comprehensive design office that consistently handles everything from planning and design to construction and after-service for factory rebuilding and renewal in-house. There are various reasons for wanting to renew an aging factory or introduce new equipment, but the current situation is fraught with challenges, such as the inability to stop production, the costs associated with relocating to a temporary factory, and the resulting decrease in productivity. Our company employs methods like "Cover Build," which involves constructing a steel frame over the existing factory while keeping production equipment in place, and "Separate," which divides the construction period into phases (e.g., Phase 1 and Phase 2) to avoid a decline in operational rates during rebuilding. Additionally, to assess the potential damage buildings may incur during an earthquake, we conduct various seismic surveys, including crack investigations, concrete strength assessments, and rebar layout measurements. Based on the survey results, we propose seismic reinforcement plans. We focus on preserving the assets of companies, including buildings, machinery, materials, and products. Furthermore, we ensure the prompt recovery and continuity of operations. Supporting everything from seismic diagnosis to reinforcement comprehensively is what we, "Yoshizawa," are dedicated to.
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