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  3. ネプラス工法全国会 本部
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ネプラス工法全国会 本部

addressNiigata/Tainai-shi/1001-9 Ajirohama
phone0254-21-5018
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last updated:Nov 12, 2025
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Neplus Method Neplus Method
Inclined (SS) construction method Inclined (SS) construction method
ネプラス工法とは ネプラス工法とは
施工方法 施工方法
縦断側溝 縦断側溝
横断側溝 横断側溝
Neplus

Neplus Method

An innovative drainage repair construction system that meets the demands of the times. The "Neplus Method" is currently receiving high interest, particularly from local governments, in the field of road maintenance.

Benefits of the 'Neplus Method' for Side Ditch Repair Construction

A construction method that involves cutting and repairing only the upper part of a damaged drainage ditch! It brings numerous benefits such as cost reduction, resource and energy conservation, and shortened construction periods!

The "Nepuras Method's advantages" introduce a new approach that revolutionizes the traditional method of completely replacing all drainage ditches by only cutting and repairing the damaged upper part of the ditch, highlighting the benefits of this rational technique. The "Nepuras Method" not only shortens construction time compared to conventional methods but also reduces costs and minimizes waste materials. 【7 Advantages】 ■ Construction waste reduced by 80% compared to traditional methods ■ Excavation residual soil reduced by 100% compared to traditional methods ■ Can be implemented even when structures are close together ■ Immediate traffic reopening ensures resident peace of mind ■ Reduces social losses due to traffic restrictions ■ No need for temporary drainage ditches, saving costs ■ Capable of handling construction under various conditions *NETIS Ministry of Land, Infrastructure, Transport and Tourism New Technology Information System Registration Number HR-060021 *For more details, please refer to the PDF document or feel free to contact us. *Construction method videos are currently being showcased at the link below!

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Construction Method: Introduction to the Neplus Method

80% reduction in concrete waste! We will proceed with repair work smoothly and quickly!

In the "Neplus Method," the development of a side cutting machine allows for the cutting and repair of only the upper part of the drainage ditch, achieving construction times that are one-third to one-fourth of traditional methods. Additionally, if the length of the repair area is around 10 meters, the work can be completed in one day, allowing for immediate lifting of traffic restrictions and minimizing the time vehicles are blocked. There are two main types of repair products: cross-sectional type and longitudinal type, which are used according to the conditions of the construction site. The Neplus Method demonstrates its effectiveness along drainage ditches that run across roads and structures such as block walls, and it is also compatible with irrigation channels, snow-melting ditches, and catch basins. 【Construction Method】 1. Installation of running rails 2. Cutting of the drainage ditch 3. Removal of concrete 4. Drilling of bolt holes 5. Injection of special adhesive 6. Installation of the upper repair product for the ditch 7. Filling with concrete 8. Tamping of pavement materials *For more details, please refer to the PDF materials or feel free to contact us. *The construction method video is currently available at the link below!

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Leave the drainage repair work to us! "Neplus Method Construction Achievement Case Collection"

【※Looking for construction partners!】 The Neplus method is a technique that repairs only the upper part of damaged gutters! Cost reduction, resource and energy conservation, and shortened construction time!

The "Neplus Method's advantages" introduce a new approach that completely replaces the traditional method of replacing entire drainage ditches, by cutting and repairing only the damaged upper part of the ditch, showcasing the benefits of this rational method. The "Neplus Method" not only shortens construction time compared to conventional methods but also reduces costs and minimizes waste materials. 【Features】 ■ Construction waste reduced by 80% compared to conventional methods ■ Excavation residual soil reduced by 100% compared to conventional methods ■ Can be implemented even when structures are close together ■ Immediate traffic reopening for resident peace of mind ■ Reduction of social losses due to traffic restrictions ■ No need for temporary drainage channels, reducing expenses ■ Capable of construction under various conditions 【Contents】 ■ What is the Neplus Method? ■ Features of the Neplus Method ■ Construction methods ■ Case studies * Registration period for NETIS ended in March 2017 (Registration number HR-060021) * For more details, please refer to the PDF document or feel free to contact us.

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Drain covers that prevent damage from snow removal.

Prevent damage to drainage covers caused by snow removal!!

Due to the height difference between the road and the drainage ditch, many drainage covers have been damaged during winter snow removal operations. In particular, the damage to grates can lead to tire punctures, which is very dangerous. To prevent such damage, some areas in snow-prone regions install drainage covers lower than the road surface. However, during non-snow periods, the height difference can hinder bicycle passage and lead to accidents, as well as cause noise and vibration when vehicles pass. By using the Neplus method for construction, the work can be completed in a short period.

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[For municipalities] Side ditch repair using the Neplus method

Immediate traffic opening! Reducing social costs without excavation.

In the maintenance and management of ditches by local governments, consideration for surrounding residents and private property, as well as the impact of traffic congestion due to traffic regulations, are significant challenges. In particular, the renovation of aging ditches tends to lead to prolonged traffic regulations and increased costs due to excavation work. The Neplus method was developed to address these challenges. 【Usage Scenarios】 - Renovation of ditches in areas where traffic regulation is difficult, such as road crossings or in front of stores - Construction in locations close to underground installations or structures - Responding to needs for height adjustments of ditches (raising or lowering) due to road improvements - Resolving difficulties in construction caused by the depth of free-slope ditches 【Effects of Implementation】 - Shortening of traffic regulation periods due to immediate reopening of roads - No excavation required, avoiding impact on underground installations and private property - Potential cost savings through the reuse of existing covers - Significant reduction in construction time

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Snow Removal Considerate Cast Iron Grating for Snow Removal Routes

Measures against fragile drainage covers in snow removal using the Neplus method.

In areas with snowfall, there are many instances of grating damage due to snow removal. Particularly, when there is a step between the grating and the pavement surface, the risk of damage is high, and frequent repair work is currently being carried out. The Neplus method offers grating that is less affected by snowplows even with some step differences. The snow removal-friendly grating features a cast iron integrated structure that is corrosion-resistant and durable, significantly contributing to the reduction of lifecycle costs. 【Usage Scenarios】 - Cross-drainage ditches and access ditches on snow removal routes - Locations where steps between the grating and pavement surface are likely to occur (areas prone to ruts) - Areas where grating corrosion due to de-icing agents is severe 【Benefits of Implementation】 - Prevents damage from snowplow blades - Significantly reduces restriction time by allowing immediate traffic reopening - The cast iron integrated structure makes the grating body less prone to deformation, allowing for long-term use - The cast iron integrated structure improves corrosion resistance and durability

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Snow removal considerate cast iron grating for highways

Preventing damage to grates caused by snowplow snow plows.

In ensuring safety on highways, snow removal operations during snowfall are essential. However, there are frequent cases where the snow plow of snow removal vehicles gets caught on grates, causing damage. The damage to the grates not only threatens the safety of passing vehicles but also leads to traffic restrictions due to repair work, creating further risks. Our snow removal-friendly cast iron grates are designed to be less affected by snow removal vehicles, even with some height differences. This reduces the risk of grate damage and ensures safe passage on highways. 【Usage Scenarios】 - Snow removal routes on highways - Areas where height differences between grates and pavement are likely to occur - Areas with severe corrosion of grates due to de-icing agents 【Benefits of Implementation】 - Prevents damage from snow plows of snow removal vehicles - Significantly reduces restriction time due to immediate traffic reopening - The cast iron integrated structure makes the grates less prone to deformation, allowing for long-term use - The cast iron integrated structure improves corrosion resistance and durability

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Snow removal considerate cast iron grating for local governments

Prevent damage from snowplow vehicles and reduce maintenance costs for ditches.

In local governments, the maintenance of roads faces significant challenges due to damage to grates caused by snow removal. Damage to grates not only increases the frequency of repair work and strains budgets but can also obstruct traffic. Our snow-removal-friendly cast iron grates help prevent damage from snowplows and contribute to solving challenges in the maintenance of ditches. 【Usage Scenarios】 - Cross ditches and entrance ditches on snow removal routes - Areas where a step difference between the grate and the pavement is likely to occur (areas prone to ruts) - Areas where corrosion of grates due to de-icing agents is severe 【Benefits of Introduction】 - Prevents damage from snowplow blades - Significantly reduces restriction time with same-day traffic reopening - The cast iron integrated structure makes the grate body resistant to deformation, allowing for long-term use - The cast iron integrated structure improves corrosion resistance and durability

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Maintenance and Repair: The 'Neplus Method' for Drainage Repair that Allows for Immediate Traffic Opening

Immediate traffic opening! A drainage repair method that enhances road safety.

The aging of drainage ditches is a significant issue in improving road safety. Damaged ditches can lead to accidents involving pedestrians and vehicles, undermining the overall safety of the road. Additionally, repairing ditches incurs time and economic losses due to traffic regulations. The Neplus method was developed to address these challenges. 【Usage Scenarios】 - Roads with heavy traffic - Sidewalks with many pedestrians - Repair of aging drainage ditches - Urgent repairs of drainage ditches 【Effects of Implementation】 - Minimization of traffic impact through same-day reopening - Reduction of accident risk through upgrades to safer drainage ditches - Potential cost savings by reusing existing covers

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Extending the Lifespan of Drainage Ditches Using the Neplus Method for the Construction Industry

Immediate traffic opening! The Neplus method realizes the renovation and longevity of drainage ditches.

In the construction industry, the aging of drainage ditches poses challenges that not only compromise road safety and aesthetics but also lead to traffic restrictions and increased costs due to repair work. Especially in modern times, where the longevity of infrastructure is required, proper maintenance and management of drainage ditches is a critical issue. The Neplus method allows for the renovation of only the upper part of damaged drainage ditches, eliminating the need for excavation and enabling construction while avoiding structures and underground installations. This minimizes the impact on traffic while achieving the longevity of drainage ditches. 【Application Scenarios】 - Renovation of drainage ditches in various locations such as roads, highways, airport and port facilities, railway facilities, factories, and stores - Renovation of drainage ditches in areas where traffic regulation is difficult - Construction in locations close to underground installations or structures - Addressing the need for height adjustments of drainage ditches due to road improvements - Resolving construction difficulties caused by the depth of free-slope drainage ditches 【Benefits of Implementation】 - Shortened construction period due to immediate traffic reopening - Cost reduction due to no excavation required - Effective use of resources through the reuse of existing covers - Improved durability with steel frames - Ability to meet a wide range of needs with diverse product variations

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Neplus Method for School Routes

Safe drainage ditches along school routes! Repair methods that allow for immediate traffic reopening.

On the school route, ensuring the safety of students is the top priority. The deterioration and damage of drainage ditches can increase the risk of falls and vehicle accidents. In particular, traffic regulations during school hours can place a significant burden on parents and nearby residents, so we want to avoid them as much as possible. The Neplus method allows for immediate traffic reopening, ensuring the safety of school routes while minimizing the impact on traffic. 【Usage Scenarios】 - Renovation of drainage ditches on school routes - Repair of ditches between sidewalks and roadways - Repair of ditches around schools - Construction of new sidewalks utilizing waterway beds 【Benefits of Implementation】 - Ensures safe passage for students - Minimizes the impact of traffic regulations - Reduces accident risk through early ditch repairs - Cuts construction costs (especially effective for large waterways)

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[Problem Solving] Repair of the Ditch Near the House "Neplus Method"

Repairs to the drainage ditch near the structure can also be easily carried out!

Advantages of adopting the Neplus method at the proximity of structures! 1. It can avoid interference with the excavation of the structure's foundation. 2. It can be easily constructed even if there are block walls with shallow embedment nearby. 3. It ensures the stability of existing structures. 4. It can be safely constructed even if there are buried utilities such as gas pipes, water pipes, and optical cables nearby.

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