福原鋳物製作所 List of Products and Services

This document introduces the "Inner Weight Method" to prevent the phenomenon of manhole uplift caused by liquefaction. It includes information on damages caused by manhole uplift, as well as the evaluation and characteristics of method selection and weight-increasing methods. 【Contents (partial)】 ■ Damages caused by manhole uplift ■ Mechanism of manhole uplift ■ Diagnosis of manhole uplift ■ Method selection (Part 1 to Part 3) ■ Evaluation of weight-increasing methods *For more details, please refer to the PDF document or feel free to contact us.

• Earthquake-resistant construction method
• Ground foundation construction method
• Inspection hatches, manhole covers, and ditch covers

The "Inner Weight Method" is an environmentally friendly construction method that does not involve excavation of the ground among weight-increasing methods. By increasing the weight inside the manhole, it prevents the manhole from floating. It can be applied to various shapes, including existing and newly constructed assembled manholes, cast-in-place manholes, square, rectangular, circular, and oval shapes. It is possible to supplement the insufficient weight when designed using excessive pore water pressure dissipation methods, weight methods, and anchor methods with inner blocks. 【Features】 ■ Simple principle ■ Reliable effect ■ Easy construction ■ Minimal construction nuisance *For more details, please refer to the PDF materials or feel free to contact us.

• Earthquake-resistant construction method
• Ground foundation construction method
• Inspection hatches, manhole covers, and ditch covers

Fukuhara Casting Manufacturing Co., Ltd. is a company that is constantly striving to advance into new fields, handling FCD cast iron and manhole buoyancy prevention methods. We are dedicated to developing forward-thinking products and technologies, such as "Tree Circles" (root protection for trees) for urban greening and "New Type Valve Boxes" suitable for cost reduction of water supply materials. 【Products Offered】 ■ Improved Water Supply Partition Valve Box PAT.P ■ Heavy Rain Response Type Collection L-shaped Curb and Cover ■ Water Supply Partition Valve Box (Benkyou) KPE Type ■ Inner Weight Method *Please feel free to contact us for more details.

• Inspection hatches, manhole covers, and ditch covers
• Other earthworks, foundation works, and exterior floors
• Road facilities