Safety and security measures for manholes! No inspections, cleaning, or repairs required at all.
The "Anchor Wing Method" is a technique for preventing manhole uplift. By rotating and embedding an anchor section with spiral wings connected to rods into a stratum that poses no risk of liquefaction, and linking the rods to fixed fittings installed on the manhole head, the uplift of the manhole is physically and reliably restrained. This is a maintenance-free technology that requires no inspection, cleaning, or repairs to maintain drainage functionality over an extended period. 【Construction Flow】 ■ Removal of pavement and subgrade, excavation ■ Anchor wing set ■ Rotational embedding ■ Casing extraction *For more details, please refer to the PDF document or feel free to contact us.
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【Design Flow】 ■ Organizing design conditions and ground conditions ■ Investigating surrounding conditions of the construction site and manhole structure ■ Examining the buoyancy of the manhole ■ Examining the anchoring layer and pull-out resistance ■ Setting the installation position of the anchor wing ■ Reviewing each component ■ Deciding on structural specifications * 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.
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Our company, Chiyoda Kōei Co., Ltd., has reached its 50th anniversary. This is entirely due to the support and patronage of all of you, for which we are sincerely grateful. Until now, Chiyoda Kōei has consistently worked under the concept of "protecting human life and property through foundation piles," engaging in a direct management system from ground surveys to foundation pile construction. As a pioneer of "environmentally friendly methods for steel pipe piles," we have continually strived for technological development to meet our customers' needs. Moving forward, we will take steady steps to build a reliable company that considers harmony and conservation with the global environment, as "total engineers of soil and foundations." We kindly ask for your continued guidance and encouragement.
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