ニホン・ドレン List of Products and Services

"Arch Roofing" is a waterproof, impact-resistant, and fire-resistant aluminum laminated composite material that can handle any leakage. Due to the large cross-sectional coefficient at the corners, the water-stopping material is evenly pressurized, ensuring reliable water stopping. Additionally, the anchor cover is easy to remove, making it simple to eliminate free lime and other debris from inside the gutter. 【Features】 ■ Lightweight and high rigidity ■ Corrosion resistance and weather resistance ■ Flatness ■ Insulation, sound absorption, and vibration damping ■ Maintenance and cost-effectiveness *For more details, please refer to the catalog or feel free to contact us.

The 'Elasto Drain' has adopted flexible materials for its drainage pipes used in leak prevention measures, enabling protection against damage to the pipes from vibrations such as earthquakes and allowing installation at uneven surfaces. It can be used for leak prevention from joints and cracks in concrete structures, as well as for water stopping in central medians and preventing concrete spalling. [Features] - Weather resistance - Flame retardancy - Flexible material *For more details, please refer to the catalog or feel free to contact us.

The "Side Drain" is ideal for preventing water leakage from horizontal directions such as spring lines. Sub-rails and size adjustments can be made as needed, allowing for construction that meets site requirements. Additionally, by using a raising plate, water treatment on the wall surface above the tunnel can be performed. 【Features】 ■ Optimal for preventing water leakage from horizontal directions ■ Sub-rail installation is possible ■ Size adjustments are possible ■ Design and manufacturing of various shaped gutters and catch basins are possible ■ NETIS registered (KK150047-VE) *For more details, please refer to the catalog or feel free to contact us.

"Rec Drain" is a hard PVC gutter that is fire-resistant, weather-resistant, and impact-resistant, designed to collect and drain water leaking from concrete structures and joints. It features easy installation with mechanical fixation using bolts and nuts, and can be shaped according to the specific needs of the site. Additionally, the product can be designed with a drainage slope, allowing for smooth drainage. [Features] - Fire-resistant, weather-resistant, and impact-resistant - Mechanically fixed with bolts and nuts - Can be shaped according to application - Capable of having a drainage slope *For more details, please refer to the catalog or feel free to contact us.

"Seal Drain" is a water leakage treatment method (waterproofing material) that can handle uneven concrete and mortar spray surfaces. It uses a soft silicone seal that is flame-retardant and has weather and cold resistance. The soft sheet has excellent adhesion and is compatible with various materials such as concrete and metal. 【Features】 - Capable of treating water leakage from mortar spray surfaces - Uses a flame-retardant, weather-resistant, and cold-resistant soft silicone seal - The soft sheet has excellent adhesion and is compatible with all materials, including concrete and metal - Made of superior flexible material *For more details, please refer to the PDF document or feel free to contact us.

The "Arch Drain Line Water Guide" is a flame-retardant and impact-resistant plastic channel designed to quickly manage water leakage from construction joints, cracks in concrete walls, and other areas in tunnels, underground structures, and buildings. With a wide variety of types (various water guide widths, shapes, etc.), it can handle any type of leakage. The water guide plate and the corners on both sides are at right angles, preventing any bending of the plate or blockage of the water guide cross-section. Due to the large cross-sectional coefficient of the corners, the water-stopping material is evenly pressurized, ensuring reliable water stopping. 【Features】 ■ Reliable water stopping ■ Strong and lightweight ■ Flame-resistant ■ Resistant to natural environments ■ Excellent workability ■ NETIS registered (KK-120043-VE) *For more details, please refer to the catalog or feel free to contact us.

"Barry Dren" is an embedded drainage material that is weather-resistant and suitable for long-term use. It is made from chloroprene synthetic rubber, allowing it to withstand prolonged use, and it is lightweight and easy to carry, making it user-friendly. Being embedded, it enables leak treatment without violating construction limits. 【Features】 ■ High weather resistance ■ Lightweight ■ High water tightness ■ Difficult to peel off *For more details, please refer to the PDF document or feel free to contact us.

"Arch Drain Surface Water Management" is a wide-area leak treatment material that can cover large wall surfaces. There are standard, cold-resistant, and railway types available, and colors include gray and transparent, allowing for selection based on site conditions. It uses a composite elastomer of PE and E.P.D.M, which are independent foams, providing excellent chemical resistance and durability, with no leakage seeping through. 【Features】 ■ Reliable water stopping ■ Strong against water and impact ■ Excellent flame resistance ■ Compatible with various shapes *For more details, please refer to the PDF materials or feel free to contact us.

"Arch Roofing Water Guide" is an aluminum laminated composite material that allows for reliable water stopping due to its evenly pressurized structure. It excels in water resistance, impact resistance, and fire resistance, and the panels can be easily removed, allowing for the removal of free lime and other debris from the gutters. Please feel free to contact us when you need our services. 【Features】 ■ Lightweight and high rigidity ■ Flatness ■ Water resistance ■ Impact resistance ■ Corrosion resistance and weather resistance *For more details, please download the PDF or feel free to contact us.

This is an introduction to a case of leak prevention work carried out by "Sen-do Water Works" at the Chidai Tunnel in Chidai Town, Ishikawa Prefecture. There was leakage from the joints and cracks in the tunnel, which posed a problem as dripping water affected passing vehicles and pedestrians. As a leak prevention measure, an Arch Drain AD026, which is resistant to cold, was installed at the leak points in the tunnel. With the installation of the drain, the leakage was prevented, and the dripping water no longer affected passing vehicles and pedestrians. 【Case Summary】 ■ Issue - Leakage from cracks was affecting passing vehicles and pedestrians. ■ Result - The installation of the drain prevented leakage, and passing vehicles and pedestrians were no longer affected by the water. *For more details, please download the PDF or feel free to contact us.

This is a case study of water leakage countermeasures in the Shimohanbara Tunnel located in Ono City, Fukui Prefecture, implemented by "water guiding works." Due to the small cross-section of the tunnel, the existing water guiding pipes were frequently damaged by contact with large trucks, leading to water leakage issues. The section of the tunnel wall where the box trucks were making contact was chiseled away, and the existing pipes were replaced with embedded pipes using Arch Drain Cold-Resistant Transparent (AD030 Cold-Resistant Transparent). By changing to an embedded type, the protrusion was eliminated, resolving the damage caused by contact within the tunnel and preventing water leakage. 【Case Overview】 ■ Issues - The small cross-section of the tunnel led to frequent damage of the existing water guiding pipes due to contact with large trucks (box trucks), resulting in water leakage. ■ Results - Changing to an embedded type eliminated protrusions, resolved damage caused by contact within the tunnel, and prevented water leakage. *For more details, please download the PDF or feel free to contact us.

This is an introduction to a case of leak prevention work using "line drainage" at the Sakaimi Tunnel on the Hokuriku Expressway in Niigata Prefecture. Water leakage occurred from the joints in the section where the tunnel's cross-section changes. Additionally, there was a 40mm step at the joint, and multiple lighting fixtures and racks were installed nearby, making it difficult to install arch drains, thus requiring effective countermeasures. By installing a 500mm side drain (SDS) and directing the water leakage from the joint to the drainage channel beside the tunnel, dripping onto the road was eliminated. 【Case Summary】 ■ Issues - Water leakage occurred from the joints in the section where the tunnel's cross-section changes. - Due to the step at the joint and the presence of multiple lighting fixtures and racks nearby, it was difficult to install arch drains. ■ Results - As a result of directing the water leakage from the joint to the drainage channel beside the tunnel, dripping onto the road was eliminated. *For more details, please download the PDF or feel free to contact us.

This is an introduction to a case of leak prevention work conducted by "Sen Dousuiko" at the Kageji Tunnel in Ono City, Fukui Prefecture. At the site, water leakage was occurring from the side of the existing steel plate (5mm thick). On the other hand, since the removal of the existing steel plate was not possible and the tunnel cross-section was small, there was a request to minimize protrusion from the wall, necessitating effective countermeasures. By installing seal drains, we were able to prevent water leakage, eliminating dripping onto the road. [Challenges] ■ Water leakage was occurring from the side of the existing steel plate (5mm thick) ■ Removal of the existing steel plate was not possible ■ Due to the small tunnel cross-section, there was a desire to minimize protrusion from the wall *For more details, please download the PDF or feel free to contact us.

This is an introduction to a case of leak prevention work conducted by "line-guided waterworks" at the Minotani Tunnel in Kamikawa Town, Hyogo Prefecture. Water leakage was occurring from the walls of the unlined shotcrete tunnel, causing dripping onto the road, which was a problem. By installing a shield drain at the leak points of the shotcrete tunnel, we were able to prevent the leakage, ensuring that dripping water no longer affected passing vehicles and pedestrians. [Case Summary] ■ Issue - Water leakage was occurring from the walls of the unlined shotcrete tunnel, dripping onto the road. ■ Result - By installing shield drains at the leak points, we prevented the leakage, eliminating the dripping water affecting passing vehicles and pedestrians. *For more details, please download the PDF or feel free to contact us.

We would like to introduce a case of leak prevention work in the Tonen Tunnel located in Tsuruga City, Fukui Prefecture, carried out by "Men-dousui Engineering." Due to corrosion of the existing galvanized steel plates (SI boards), their removal led to water leakage from the walls, which could potentially affect the surrounding healthy SI boards, necessitating new leak prevention measures. An arch roofing was installed to match the thickness of the existing SI boards, and caulking was applied at the joints to ensure water diversion. This also improved the appearance. [Challenges] ■ The existing galvanized steel plates (SI boards) were corroded, leading to water leakage from the walls upon removal. ■ There was a possibility of affecting the surrounding healthy SI boards, requiring new leak prevention measures. *For more details, please download the PDF or feel free to contact us.

This is a case study of leak prevention work conducted at the Kurizaka Tunnel in Aomori City, Aomori Prefecture, using "surface drainage technology." Leakage from the spring line (SL) was causing the formation of ice pillars, which posed safety risks. Additionally, snow-melting pipes were installed on the sidewalk, making it difficult to manage water flow, necessitating effective countermeasures. To address the leakage from the SL, arch drain surface drainage was implemented, and side drains were installed for the drainage treatment of the water flow. The elimination of ice pillar formation meant that nighttime responses from management were no longer necessary, reducing the burden of maintenance. 【Case Overview】 ■Challenges - Leakage from the spring line (SL) was causing the formation of ice pillars, which hindered safety. - The presence of snow-melting pipes on the sidewalk made it difficult to manage water flow. ■Results - Nighttime responses from management were no longer necessary, reducing the burden of maintenance. - Leakage at the water flow was resolved, preventing road surface freezing and improving safety. *For more details, please download the PDF or feel free to contact us.

This is an example of a tunnel leakage prevention construction project using "surface drainage" at the Taka Tunnel in the Sado Loop Line, located in Sado City, Niigata Prefecture. There were numerous cracks over a wide area at the top of the tunnel, leading to leakage. On the other hand, there was a request not to install drainage pipes in areas without leakage other than the top, necessitating efficient drainage measures. By installing a funnel-shaped catch basin between the side drain and the arch drain line, we were able to prevent water from pooling in the side drain, thereby improving drainage performance and reducing maintenance burdens. 【Case Summary】 ■Challenges - Numerous cracks over a wide area at the top of the tunnel were causing leakage. - There was a request not to install drainage pipes in areas without leakage other than the top, requiring efficient drainage measures. ■Results - We were able to improve drainage performance and reduce maintenance burdens. *For more details, please download the PDF or feel free to contact us.

This is an introduction to a case of leak prevention work in the Sagawa Tunnel in Sagawa Town, Takaoka District, Kochi Prefecture, using "face drainage works." There was a widespread occurrence of leaks within the tunnel, and there was a request to ensure that the flow of water could be visualized even after construction. By using a transparent type of arch drain, extensive leak prevention measures were implemented in the tunnel on National Route 33, making it easier to visualize the flow of water over a wide area, and allowing for proper drainage conditions to be confirmed even after construction. [Challenges] - Widespread leaks were occurring within the tunnel. - There was a request to ensure that the flow of water could be visualized even after construction. *For more details, please download the PDF or feel free to contact us.