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The "Tank-in-Tank Method" (hereinafter referred to as "TiT Method") is our unique construction method that allows for the quick restoration of firewater tanks by installing a steel firewater tank inside the existing firewater tank. Traditionally, when restoring a firewater tank, it was necessary to remove the existing structure and install a new tank, which required securing public land for an alternative firewater tank and took about six months for construction. The "TiT Method" allows the existing firewater tank to remain underground except for the top slab, which means that instead of the usual three months for removal work and three months for new construction, the tank can be fabricated in two months and installed on-site in one month, allowing for construction and cost reduction in about half the time. ◆ Featured in the specialized magazine "Monthly Fire"! ◆ An article introducing the adoption of the "TiT Method" in Yokohama City was published in "Monthly Fire," a practical information magazine for the firefighting community aimed at firefighters and related organizations! * Source: "Monthly Fire," April 2019 issue, published by Tokyo Horeihon Co., Ltd. ★ Please check the introduction article data available for download in the "PDF Download" section below!

The "H-frame construction method" supports aging concrete water storage tanks from the inside with H-frames and addresses leakage issues with a special coating treatment, making it a firewater tank repair method. In emergency situations, it prevents scenarios where internal firefighting water supply is compromised due to leaks, as well as the risk of collapse during large-scale earthquake disasters. Additionally, since assembly of the frames does not require welding or painting, it is safe and secure. 【Features】 ■ Reliable grounding even for complex shapes with expandable supports ■ Fits any internal shape ■ Suppresses side collapse with a framework made of H-shaped steel ■ Corrosion prevention, water stopping, and water shielding treatments can be selected from epoxy resin or polyurethane resin ■ All components are brought in through existing manholes and assembled inside the water storage tank *For more details, please refer to the catalog or feel free to contact us.

The "H-type frame construction method" supports aging cast-in-place concrete water tanks from the inside with an H-type frame and can address leakage issues with a special coating treatment, making it a fire-fighting water tank repair method. In emergency situations, it prevents scenarios where internal fire-fighting water supply is compromised due to leakage, and avoids the risk of collapse during large-scale earthquake disasters. 【Proper management of fire hydrants and fire-fighting water tanks is required!】 At a fire site in Ibaraki Prefecture, there was a problem where corrosion of a fire hydrant hindered firefighting efforts. The government is urging municipalities nationwide to maintain and manage fire hydrants and fire-fighting water tanks. ★ Active utilization of emergency disaster prevention and mitigation project bonds is also being promoted. 【Features】 ■ Secure grounding even for complex shapes with telescopic supports ■ Fits any internal shape ■ Suppresses side collapse with a framework made of H-shaped steel ■ Corrosion prevention, water stopping, and water shielding treatments can be selected from epoxy resin or urethane resin ■ All components are brought in from existing manholes and assembled inside the water tank ■ No need for large-scale temporary structures or long-term road closures *For more details, please refer to the catalog or feel free to contact us.

The "Aging Deterioration Prevention Fire Water Tank Repair Method" is a technique that saves aging concrete water storage tanks from the risks of leakage and collapse through special coating treatment and repairs from the inside. We will extract and propose the optimal method based on the current conditions of the installed water tanks and the surrounding environment (residential areas, roads, lifelines). 【Features】 〔Coating〕 ■ Epoxy Coating: Deterioration suppression and internal corrosion prevention ■ Urethane Coating: Leakage prevention and internal corrosion prevention 〔Repair Methods〕 ■ H-Type Frame Method: Leakage prevention and seismic reinforcement ■ Water Tank In Method: Installation of a new tank within the existing tank *For more details, please refer to the catalog or feel free to contact us.