米山工業 List of Products and Services

We would like to introduce our construction achievements on bridges of the Tomei Expressway. Since there are no hanging points (post-installed anchors) in the web and bottom of the main girder for the installation of carbon fiber sheets, we were able to efficiently carry out the application of the carbon fiber sheets. 【Overview】 ■ Location: Kanagawa Prefecture ■ Client: Central Nippon Expressway Company Limited, Tokyo Branch ■ Contractor: Okumura Corporation ■ Local workers' experience with rack scaffolding: First time for all but one ■ Dispatch of rack scaffolding handling instructors: Yes ■ Start date of use: May 2024 to August 2024 *For more details, please refer to the PDF document or feel free to contact us.

• Bridge Materials

We would like to introduce our construction achievements on the Metropolitan Expressway. In a section from the Ryogoku Junction to the Kinshicho Toll Plaza on the Metropolitan Expressway Route 7 Komatsugawa Line, we utilized permanent scaffolding installation work. Due to the minimal interference between the permanent scaffolding and the rack scaffolding suspension points, we were able to carry out the permanent scaffolding installation work efficiently. 【Overview】 ■ Location: Tokyo ■ Client: Metropolitan Expressway Company Limited ■ Construction Company: JFE ShoBond (Repair) Upper Structure Reinforcement 2-210 Special Construction Joint Venture ■ Start Date of Use: June 2023 to May 2024 ■ Local Workers' Experience with Rack Scaffolding Installation: First time ■ Dispatch of Rack Scaffolding Handling Instructors: Yes *For more details, please refer to the PDF document or feel free to contact us.

• Scaffolding and Support Materials

We would like to introduce our construction achievements on the new transportation system (Yurikamome). Due to the architectural limitations of the new transportation system (Yurikamome), it was not possible to install standard construction scaffolding, so a method was adopted to move rack scaffolding onto the track during the power outage period to carry out the construction. Outside of construction working hours, the rack scaffolding was moved outside the influence area of the new transportation system and secured close to the bridge pier. 【Overview】 ■ Location/Prefecture: Tokyo ■ Client: Metropolitan Expressway Company Limited ■ Construction Company: JFE Civil Engineering and JFE Engineering (Repair) Upper Structure Reinforcement 2-206 Special Construction Joint Venture ■ Start of Use: July 2022 to November 2023 ■ Local workers' experience with rack scaffolding installation: First time ■ Dispatch of rack scaffolding handling instructors: Yes *For more details, please refer to the PDF document or feel free to contact us.

• Scaffolding and Support Materials

During the renovation work at Matsuyama Airport, "rack scaffolding" was utilized for the finishing of the ceiling panels. First, the ceiling panels, except for the rail suspension points, were finished in advance, and finally, the finishing of the ceiling panels at the rail suspension points was completed during the removal of the rails. By doing this, it became possible to finish all ceiling panels using our product. [Overview] ■ Location/Prefecture: Ehime Prefecture ■ Client: Ehime Prefecture ■ Construction Company: Okumura Corporation ■ Start Date of Use: August 1994 ■ Local Workers' Experience with Rack Scaffolding: First time ■ Presence of Rack Scaffolding Handling Instructor: Yes *For more details, please refer to the PDF document or feel free to contact us.

• Scaffolding and Support Materials

At Yokohama International Stadium, "Rack Scaffolding" was utilized to shorten the construction process for scaffolding. It was used for finishing the panels of the outer ceiling and for installing lighting and speakers on the inner ceiling. The product was moved around the stadium to carry out each task sequentially. 【Overview】 ■ Location/Prefecture: Kanagawa Prefecture ■ Client: Yokohama City ■ Construction Companies - Takenaka Corporation - Zenitaka Corporation - Japan Land Development Co., Ltd. - Sato Construction Co., Ltd. *For more details, please refer to the PDF document or feel free to contact us.

• Scaffolding and Support Materials

We would like to introduce the features of our "Rack Scaffolding." This product is designed with modular components. By changing the connection points and methods of these units, as well as the units used, the shape of the rack scaffolding can be flexibly modified. Additionally, we can manufacture components tailored to the site and can add or replace them as needed. [Features] ■ The shape of the rack scaffolding can be flexibly changed by altering the connection points and methods of the units or by changing the units used. ■ Components can be manufactured to suit the site, and additions or replacements can be made. *For more details, please refer to the PDF document or feel free to contact us.

• Scaffolding and Support Materials

We would like to introduce the features of our "rack scaffolding." Compared to conventional suspended scaffolding, it requires a significantly smaller scaffolding area, allowing for a substantial reduction in the amount of materials such as scaffolding boards. In recent years, it has been used for the construction of new bridges, inspection and repair work on existing bridges, and ceiling finishing in large buildings. *For more details, please refer to the PDF document or feel free to contact us.

• Scaffolding and Support Materials

We would like to introduce the features of the "rack scaffolding" that we handle. The longer the extension of the rack rail, the more it allows for labor-saving, rapid construction, and material conservation. Therefore, it becomes even more economically advantageous. Additionally, the economic feasibility can vary significantly depending on factors such as the size of the site, rental period, and type of materials. If you contact us, we will promptly provide you with a quotation. *For more details, please refer to the PDF document or feel free to contact us.

• Scaffolding and Support Materials

We would like to introduce the features of our "rack scaffolding." After installing the product at the starting position, the only work required is the extension of the two rack rails. Since no additional scaffolding assembly is needed, the longer the extension of the rack rails, the relatively quicker the construction can be completed. [Features] ■ After installation at the starting position, the only work required is the extension of the two rack rails. ■ The longer the extension of the rack rails, the relatively quicker the construction can be completed. *For more details, please refer to the PDF document or feel free to contact us.

• Scaffolding and Support Materials

We would like to introduce the features of the "rack scaffolding" that we handle. During the extension and dismantling of the rack rails, workers will always be working within the handrails. Therefore, a high level of safety can be ensured. *For more details, please refer to the PDF document or feel free to contact us.

• Scaffolding and Support Materials

We would like to introduce our construction achievements in the steel frame assembly of the stand, the finishing of the underside of the stand, and the finishing of the eaves ceiling. To shorten the scaffolding work process, we utilized "rack scaffolding." During the finishing of the underside of the stand, the movable floor was slid sideways to advance while avoiding the diagonal supports that support the stand. 【Overview】 ■ Location/Prefecture: Ehime Prefecture ■ Client: Matsuyama City ■ Construction Companies: Azuma Corporation, Nishimatsu Construction Co., Ltd., Aiso JV ■ Start Date of Use: April 1999 ■ Experience of local workers with rack scaffolding: First time ■ Dispatch of rack scaffolding handling instructors: Yes *For more details, please refer to the PDF document or feel free to contact us.

• Scaffolding and Support Materials

We would like to introduce our construction achievements in the installation of ceiling panels and the lifting of wall glass at Tokyo International Airport (Haneda Airport). Due to design requirements, it was necessary to install the rack rails in a three-dimensional manner, but through careful discussions with the construction company, we were able to achieve this. Please feel free to contact us if you have any inquiries. 【Overview】 ■ Location/Prefecture: Tokyo ■ Client: Japan Airport Terminal Co., Ltd. ■ Construction Company: Taisei Corporation ■ Start of Use: November 2003 ■ Experience of local workers in rack scaffolding construction: First time ■ Availability of rack scaffolding handling instructors: Yes *For more details, please refer to the PDF materials or feel free to contact us.

• Scaffolding and Support Materials

We would like to introduce our construction achievements regarding the inspection of the exterior work vehicles for the Akashi Kaikyō Bridge. Due to the small load capacity of the work vehicles and the difficulty in installing suspended scaffolding, we installed a lightweight "rack scaffolding" using fewer materials. Additionally, this was similarly utilized for the exterior work vehicles of the Tarada Bridge. 【Overview】 ■ Location/Prefecture: Hyogo Prefecture ■ Client: Honshu-Shikoku Bridge Authority (currently Honshu-Shikoku Bridge Expressway Company) ■ Start date of use: July 2004 (initial) ■ Experience of local workers in rack scaffolding installation: First time ■ Dispatch of rack scaffolding handling instructors: Yes *For more details, please refer to the PDF document or feel free to contact us.

• Scaffolding and Support Materials

The concrete painting work under the PC box girder (during bridge installation) was utilized. The span for the "rack scaffolding" was a curved bridge, but due to its characteristics, it was possible to carry out the work without any issues. Additionally, for this bridge, we installed the rail suspension using brackets, allowing us to avoid driving concrete anchors into the superstructure. [Overview] ■ Location/Prefecture: Shizuoka Prefecture ■ Client: Ministry of Land, Infrastructure, Transport and Tourism ■ Construction Companies: Daido Painting Industry Co., Ltd., Matsubara Painting Co., Ltd. ■ Start Date of Use: November 2004 ■ Local Workers' Experience with Rack Scaffolding: First time ■ Dispatch of Rack Scaffolding Handling Instructors: Yes *For more details, please refer to the PDF document or feel free to contact us.

• Scaffolding and Support Materials

We would like to introduce our construction achievements in the installation of PCa floor slab infill work. During the production of the PCa floor slab beams, ceramic inserts were pre-embedded, and the running rails were installed using these as suspension points. Despite the harsh corrosion environment due to heavy seawater splashes, there were no issues until the completion of the project. 【Overview】 ■ Location/Prefecture: Tokyo ■ Client: Ministry of Land, Infrastructure, Transport and Tourism ■ Construction Company: Mitsui Sumitomo Construction Co., Ltd. ■ Start Date of Use: July 2008 ■ Experience of local workers in rack scaffolding construction: First time ■ Presence of rack scaffolding handling instructors: Yes *For more details, please refer to the PDF document or feel free to contact us.

• Scaffolding and Support Materials

We would like to introduce our construction achievements in the repair work of PC box girder bridges (including concrete painting and crack injection, etc.). This is a cross bridge that spans National Route 2, and to shorten the scaffolding work process on the national road, we utilized "rack scaffolding." By using brackets to suspend the rails from the ground cover, we were able to install them without driving concrete anchors into the upper structure. Additionally, by equipping the movable floor with a lift, we accommodated a height variation of 3.0 meters in the girder. 【Overview】 ■ Location/Prefecture: Okayama Prefecture ■ Client: Ministry of Land, Infrastructure, Transport and Tourism ■ Construction Company: Light Industry Co., Ltd. ■ Start of Use: September 2008 ■ Local Workers' Experience with Rack Scaffolding: Extensive experience ■ Availability of Rack Scaffolding Instruction Personnel: Yes *For more details, please refer to the PDF document or feel free to contact us.

• Scaffolding and Support Materials

We would like to introduce our construction achievements for the concrete painting work on the overhang section of the anchorage (4A) of the Nanbi-San Seto Ohashi Bridge. Since work on the underside of the overhang section cannot be performed using a gondola, we utilized a "rack scaffold." Concrete anchors were installed on the underside of the overhang section, and rails were set up horizontally from these anchors. Due to the steep angle of the overhang, which is 60 degrees, the scaffold is designed in a stair-like manner. 【Overview】 ■ Location/Prefecture: Sakaide City, Kagawa Prefecture - Kurashiki City, Okayama Prefecture ■ Client: Honshu-Shikoku Bridge Expressway Company Limited ■ Construction Company: Bridge Engineering Co., Ltd. ■ Start Date of Use: October 2008 (initial) ■ Local workers' experience with rack scaffold installation: First time ■ Presence of rack scaffold handling instructor: Yes *For more details, please refer to the PDF document or feel free to contact us.

• Scaffolding and Support Materials

We would like to introduce our construction achievements in ceiling work for the New Doha International Airport (Qatar New Doha International Airport) new construction project. To cover the vast construction area cost-effectively, we utilized "rack scaffolding." Please feel free to contact us if you have any inquiries. 【Overview】 ■Location/Prefecture: Qatar ■Construction Company: Taisei Corporation ■Start Date of Use: September 2008 ■Experience of local workers in rack scaffolding installation: First time ■Presence of rack scaffolding handling instructors: Yes *For more details, please refer to the PDF materials or feel free to contact us.

• Scaffolding and Support Materials

We would like to introduce our construction achievements in the installation of sound-absorbing panels on the underside (during bridge construction). To shorten the construction process of scaffolding on JR, we utilized "rack scaffolding." This site was constructed using a method that allows for the rapid installation of full suspended scaffolding by sending out the scaffolding using rails, rather than as a "mobile suspended scaffolding." 【Overview】 ■ Location/Prefecture: Osaka Prefecture ■ Client: West Japan Railway Company ■ Construction Company: Daitetsu Industry Co., Ltd. ■ Start Date of Use: May 2009 ■ Experience of Local Workers in Rack Scaffolding Installation: Extensive experience ■ Availability of Rack Scaffolding Handling Instructors: Yes *For more details, please refer to the PDF materials or feel free to contact us.

• Scaffolding and Support Materials

We would like to introduce our construction achievements regarding the ceiling panel finishing during the renovation work of Terminal 1. Since the renovation work is being carried out while the airport is in operation, the construction area is within temporary enclosures. To efficiently conduct the renovation work in the limited space within the enclosures, a method was adopted to simultaneously carry out the ceiling panel renovation and floor renovation. During this ceiling panel renovation, "rack scaffolding" was utilized. The scaffolding was also moved in accordance with the changes to the temporary enclosures. [Overview] ■ Location/Prefecture: Singapore ■ Client: CAG (Changi Airport Group) ■ Construction Company: Takenaka Corporation ■ Start Date of Use: May 2009 ■ Local workers' experience with rack scaffolding: First time ■ Presence of rack scaffolding handling instructor: Yes *For more details, please refer to the PDF document or feel free to contact us.

• Scaffolding and Support Materials

We would like to introduce our construction achievements related to the ceiling finishing work for the new international passenger terminal building at New Chitose Airport. Since the installation rail components (large roof truss) are curved in a planar manner, the track width has changed. However, by utilizing the characteristics of the "rack scaffolding," we were able to install it without any issues. Additionally, during the lateral reconfiguration, the movable floor was never lowered to the ground, which minimized the impact on ground operations. 【Overview】 ■ Location/Prefecture: Hokkaido ■ Client: Hokkaido Airport Co., Ltd. ■ Construction Company: Kajima, Miyasaka, Arai Joint Venture ■ Start of Use: August 2009 ■ Local Workers' Experience with Rack Scaffolding: First time ■ Dispatch of Rack Scaffolding Handling Instructors: Yes *For more details, please refer to the PDF document or feel free to contact us.

• Scaffolding and Support Materials

We would like to introduce our track record in floor slab repair work. Due to the difficulty of moving the floor and lifting it under the target span, we installed a "rack scaffold" in the adjacent span. Subsequently, we adopted a method to raise the floor without lowering it to the ground, allowing us to cross over the bridge pier. This site maximized the unique characteristic of being able to cross over the bridge pier without lowering the scaffold to the ground. 【Overview】 ■ Location/Prefecture: Kanagawa Prefecture ■ Client: NEXCO Central Japan ■ Contractor: Kajima Corporation ■ Start of Use: September 2009 to October 2009 ■ Experience of local workers with rack scaffold installation: First time ■ Availability of rack scaffold handling instructors: Yes *For more details, please refer to the PDF document or feel free to contact us.

• Scaffolding and Support Materials

We would like to introduce our track record of painting and repainting work on a gantry crane (approximately 35m high). Since the gantry crane operates on weekdays, the painting work was scheduled to take place only on weekends. We adopted "rack scaffolding" as it allowed us to move within a range that would not interfere with the crane's operation. The installation and removal work was completed in just two days over the weekend, so there was no impact on the operation of the gantry crane. [Overview] ■ Location/Prefecture: Kagawa Prefecture ■ Client: Kawada Industries, Inc. ■ Contractor: Kawada Industries, Inc. ■ Start of Use: March 2010 ■ Local workers' experience with rack scaffolding: First time ■ Availability of rack scaffolding handling instructor: Yes *For more details, please refer to the PDF document or feel free to contact us.

• Scaffolding and Support Materials

We would like to introduce our construction achievements in the inspection work for the Kiso River Ohashi Bridge (downstream) and the Ibi Nagara Ohashi Bridge (downstream). Both bridges have an upper structure type of "lower chord simple steel Warren truss bridge," with 12 spans and 14 spans, respectively. It was necessary to complete the inspection work quickly, but the main structure posed obstacles, making it difficult to use bridge inspection vehicles. Therefore, we adopted a method of installing a "rack scaffold" movable floor on the high water bed and conducting the inspection work while shifting it for each span, progressing all the way to the opposite bank. When shifting the movable floor over the bridge piers, there was no need for road restrictions or barges, so there was almost no impact on users. *For more details, please refer to the PDF document or feel free to contact us.

• Scaffolding and Support Materials

We would like to introduce our construction achievements for the installation work of the Namihashi Bridge. We utilized bolt tightening and painting at the main girder connection, and due to the lightweight nature of the scaffold and the reduction in work volume over the navigation route, we adopted the "rack scaffold." By pre-installing the running rails on the main girder at the assembly yard, the installation work for the running rails over the navigation route was limited to the connection points only. Additionally, since rapid travel was possible up to the tip of the next connection point, we significantly reduced the working time related to the scaffold over the navigation route. [Overview] ■ Location/Prefecture: Ehime Prefecture ■ Client: Ehime Prefecture ■ Construction Company: Mitsui Sumitomo Construction Co., Ltd. ■ Start Date of Use: June 2010 ■ Experience of Local Workers with Rack Scaffold Installation: First time ■ Presence of Rack Scaffold Handling Instructor: Yes *For more details, please refer to the PDF document or feel free to contact us.

• Scaffolding and Support Materials

We would like to introduce our construction achievements for the investigation and repainting work of the Morimoto River Bridge. Both the upstream and downstream sections feature a two-span continuous steel plate girder bridge, and by utilizing the offset of the bridge piers in the front and back, we adopted a construction method where the "rack scaffolding" slides horizontally to cross over the piers. As a result, it became possible to cover all work for the four spans (= two spans × upstream and downstream) with a single unit. 【Overview】 ■ Location/Prefecture: Ishikawa Prefecture ■ Client: NEXCO Central Japan ■ Construction Company: Hokuriku Highway Construction Co., Ltd. ■ Start of Use: February 2011 to March 2011 ■ Local workers' experience with rack scaffolding: First time ■ Dispatch of rack scaffolding handling instructors: Yes *For more details, please refer to the PDF materials or feel free to contact us.

• Scaffolding and Support Materials

We would like to introduce our construction achievements related to the removal work of the Sanpo Entrance (Bay P121 to Sanpo Entrance P2) bridge. The bridge is a three-span continuous steel deck box girder bridge. To avoid impacting the work, we adopted a method where the running rails of the "rack scaffolding" were installed on the protruding part of the lower flange of the box girder, utilizing the cutting and bolt removal of the wall parapet and the root of the steel deck overhang. After the work was completed, we were able to quickly relocate the scaffolding, allowing for prompt temporary support of the main girder using a bent. 【Overview】 ■ Location/Prefecture: Osaka Prefecture ■ Client: Hanshin Expressway Company Limited ■ Construction Company: Yokogawa, Yokogawa Sumitomo, Takigami Construction Joint Venture ■ Start Date of Use: June 2011 ■ Local Workers' Experience with Rack Scaffolding: First time ■ Dispatch of Rack Scaffolding Handling Instructors: Yes *For more details, please refer to the PDF document or feel free to contact us.

• Scaffolding and Support Materials

In the construction of the new West Kubo JCT ramp bridge (3-span continuous steel deck steel box girder bridge), "rack scaffolding" was utilized for the bolted connection of the main girder. The installation of the movable floor and running rails was carried out while the main girder was within the construction yard. Additionally, after moving the movable floor to a location with minimal impact on the new Shonan Bypass (intersection project), dismantling was performed. By adopting these construction methods, it became possible to minimize traffic restrictions on the new Shonan Bypass for the installation and dismantling of scaffolding. 【Overview】 ■ Location/Prefecture: Kanagawa Prefecture ■ Client: NEXCO Central Japan ■ Construction Company: Mitsubishi-Komai Joint Venture ■ Start Date of Use: May 2011 ■ Experience of local workers in rack scaffolding installation: First time ■ Presence of rack scaffolding handling instructor: Yes *For more details, please refer to the PDF document or feel free to contact us.

• Scaffolding and Support Materials

We would like to introduce our construction achievements in the bridge inspections of the Minami Bridge (a four-span continuous RC slab steel girder bridge) on the Hakodate-Mobetsu Road, as well as the Ono B Ramp Bridge and Ono C Ramp Bridge (both three-span continuous steel slab box girder bridges). In the case of inspection work using a bridge inspection vehicle, the Minami Bridge is in a provisional shared section, requiring alternating one-way traffic control, while the Ono B Ramp Bridge and C Ramp Bridge are single-lane ramp bridges, necessitating a complete traffic stop. To avoid the occurrence of these traffic regulations and to minimize the impact on road users, we adopted "rack scaffolding." Since the work was carried out from underneath the bridge during both installation and dismantling, there was no impact on those using the Hakodate-Mobetsu Road. *For more details, please refer to the PDF document or feel free to contact us.

• Scaffolding and Support Materials

We would like to introduce our track record of repair and reinforcement work on the port bridge (2-span simple pre-tensioned PCT girder bridge). Since the intersecting property is a shipping route, we adopted a "rack scaffold" that allows the movable floor to be shifted outside the shipping route when not in operation. By utilizing the characteristic of lateral movement, we were able to minimize the impact on navigating vessels. Additionally, the bridge surface included an R-shaped batten section, which we were also able to use without any issues by taking advantage of its characteristics. [Overview] ■ Location/Prefecture: Fukuoka Prefecture ■ Client: Kitakyushu City ■ Construction Company: Toyo Construction Co., Ltd. ■ Start Date of Use: November 2011 ■ Experience of local workers with rack scaffold installation: First time ■ Availability of rack scaffold handling instructors: Yes *For more details, please refer to the PDF document or feel free to contact us.

• Scaffolding and Support Materials

We would like to introduce our construction achievements for the concrete spalling prevention measures at the intersection of the down line of the Tomei Expressway (upbound) and the Tomei Ashigara Bridge (PC3 span continuous cable-stayed bridge). The selection of scaffolding was carried out with a focus on ensuring the safety of the traffic on the main line during operation and the structural integrity of the cable-stayed bridge (including the stay cables), while also considering economic efficiency and constructability. Among the comparative proposals, the "Rack Scaffolding Method" was adopted due to its shorter down line restriction days and superior economic efficiency. Since the site is located at a point where it intersects with the down line of the Tomei Expressway, higher safety and reliability were required in planning and execution. In particular, measures against strong winds, earthquakes, and falling objects were implemented by installing additional hanging materials and conducting thorough protective boarding and netting, ensuring the required quality. Additionally, side scaffolding and cantilever scaffolding were constructed to match the shape of the underside of the main girder, achieving improved workability. *For more details, please refer to the PDF document or feel free to contact us.

• Scaffolding and Support Materials

We would like to introduce our construction achievements for the repair work on the Nakahama Bridge (a two-span simple pre-tensioned PC hollow slab bridge). Due to the structural characteristics of the superstructure, it was necessary to avoid post-installed anchor drilling into the bottom of the girders, so we adopted a "rack scaffold" that eliminates the need for these anchors. By using this scaffold, we were able to install it without damaging the main structure of the bridge girders at all. Although there were intersecting properties that served as a navigation route, we were able to minimize the impact on passing vessels by moving the rack scaffold's movable floor outside the navigation route when not in use. 【Overview】 ■ Location/Prefecture: Chiba Prefecture ■ Client: Chiba City ■ Construction Company: Toa Construction Co., Ltd. ■ Start of Use: July 2012 ■ Local workers' experience with rack scaffold installation: First time ■ Presence of rack scaffold handling instructor: Yes *For more details, please refer to the PDF document or feel free to contact us.

• Scaffolding and Support Materials

We would like to introduce our construction achievements for the Kushikawa Bridge (PC three-span continuous box girder bridge) located between Sagamihara I.C. and Takaozan I.C. on the Ken-O Expressway. This bridge consists of two box girders between A1 and P2, and three box girders between P2 and A2 after the ramp merge, and it is a PC box girder bridge with intermediate cross girders between the box girders. The "rack scaffolding" was adopted as the support structure during the construction of the cross girders and as the scaffolding for the PC steel materials for the cross girders. Despite being a large-scale and highly challenging bridge with a width variation of 4m (27.5m to 31.5m) and a girder height variation of 5m (4m to 9.5m), we were able to assist with the scaffolding installation under the meticulous planning and appropriate instructions from the construction company. *For more details, please refer to the PDF document or feel free to contact us.*

• Scaffolding and Support Materials

We would like to introduce the construction achievements related to the seismic reinforcement work on the Asou no Ura Ohashi Bridge (Nielsen Rose Bridge) spanning the Iura Bay on the Mie Prefectural Road 128 Toba Ago Line (Pearl Road Seaside Line). Due to the presence of localized seismic reinforcement areas across the entire main span, we adopted a "rack scaffold" that allows for the movement of a certain range of scaffolding to cover the entire area. By utilizing its characteristics, we assisted in the transportation of seismic reinforcement materials, the reduction of materials for temporary scaffolding, and the shortening of the construction period for scaffold installation and dismantling. [Overview] ■ Location/Prefecture: Mie Prefecture ■ Client: Mie Prefecture ■ Construction Company: Yokogawa Construction Co., Ltd. ■ Start Date of Use: August 2013 ■ Experience of local workers in rack scaffold construction: First time ■ Presence of rack scaffold handling instructors: Yes *For more details, please refer to the PDF document or feel free to contact us.

• Scaffolding and Support Materials

We would like to introduce our construction achievements for the repainting work of the Portopia Bridge (a lower chord truss bridge) on the Kobe New Transit Port Island Line. Due to the large installation pitch of the hanging pieces on the underside and sides of the girder, setting up the hanging scaffolding was more challenging than usual. For this reason, we adopted "rack scaffolding" for this repainting work as well, given our experience in similar projects. Since there is a height variation of 5.6 meters (from 2m to 7.6m), we proposed a method of using a total of three units—one for the underside of the girder and two for the sides—configured as one set. [Overview] ■ Location/Prefecture: Hyogo Prefecture ■ Client: Kobe City ■ Construction Company: Showbond Construction Co., Ltd. ■ Start Date of Use: July 2013 ■ Local Workers' Experience with Rack Scaffolding: First time ■ Dispatch of Rack Scaffolding Handling Instructor: Yes *For more details, please refer to the PDF document or feel free to contact us.

• Scaffolding and Support Materials

We would like to introduce our construction achievements for the new construction work of the Isogo Elevated Bridge (Part 1) in the "Negishi Area" along National Route 357 (Wangan Road). The Isogo Elevated Bridge spans Yokohama City Road No. 181, and to shorten the period for the installation of the suspended scaffolding on this city road, we adopted the "rack scaffolding." At the construction yard beside the city road, we assembled and lifted a scaffolding that can cover the entire width of the city road (19m in the width direction × 24m in the bridge axis direction), which was later transported onto the city road during nighttime work. As a result of this adoption, the period for the installation of the suspended scaffolding on the city road was reduced to just two nights of nighttime work. This site was adopted not as a "mobile suspended scaffolding method," but as a method that "quickly constructs full suspended scaffolding by using rails to extend the scaffolding." *For more details, please refer to the PDF document or feel free to contact us.

• Scaffolding and Support Materials

We would like to introduce our construction achievements for the seismic reinforcement work on the upper structure of the Katashina River Bridge (a three-span continuous truss bridge) on the Kan-Etsu Expressway. The height from the ground to the bottom chord of the truss exceeds 55 meters, making it difficult to supply temporary materials from the ground using large cranes at all locations. Therefore, we transported temporary materials using a "rack scaffold." This helped reduce traffic restrictions on the Kan-Etsu Expressway caused by material transportation. There are sections of the bridge where the main structure height changes from 25 meters to 14 meters, but we were able to utilize these areas without any issues. *For more details, please refer to the PDF document or feel free to contact us.*

• Scaffolding and Support Materials

We would like to introduce our construction achievements for the new installation of the Takashu Viaduct (a steel 5-span continuous 2-main mixed girder bridge, and a steel 5-span continuous 2-main plate girder bridge) on the Tokyo Gaikan Expressway. To reduce the necessary traffic regulations on the national road during the installation of the full suspended scaffold, we adopted the "rack scaffold." By covering the area below the full suspended scaffold installation in advance, we were able to eliminate the need for traffic regulations on the national road. 【Overview】 ■ Location/Prefecture: Saitama Prefecture ■ Client: NEXCO East Japan ■ Construction Company: Tokyo Steel Bridge Co., Ltd. and Katayama Structec Co., Ltd. Joint Venture ■ Start of Use: January 2015 ■ Local Workers' Experience with Rack Scaffold Installation: First time ■ Dispatch of Rack Scaffold Handling Instructors: Yes *For more details, please refer to the PDF document or feel free to contact us.

• Scaffolding and Support Materials

We would like to introduce our construction achievements for the repair work on the Konpira Ohashi Bridge (an 8-span post-tensioned PC simple T-beam bridge) spanning the Hita Bypass (National Route 210). By attaching the running rails with chains from the railing posts at the top of the wall railing, we were able to install the "rack scaffolding" without using any post-installed anchors. Additionally, since the only work on the municipal road, which is an intersecting property, was the installation of the running rails, we were able to shorten the duration of the scaffolding installation work on the municipal road. 【Overview】 ■ Location/Prefecture: Oita Prefecture ■ Client: Kyushu Regional Development Bureau, Ministry of Land, Infrastructure, Transport and Tourism, Oita River and National Road Office ■ Contractor: Kawakami Corporation ■ Start date of use: November 2014 ■ Experience of local workers in rack scaffolding installation: First time ■ Presence of rack scaffolding handling instructor: Yes *For more details, please refer to the PDF document or feel free to contact us.

• Scaffolding and Support Materials

We would like to introduce our construction achievements for the inspection work on the Omorikawa Bridge (Phase 1) (a five-span continuous post-tensioned PC box girder bridge) spanning the Omorikawa River on the Akita Minami Bypass (National Route 7). Due to the presence of a water pipe bridge and Phase 2 on either side of Phase 1, inspections using a bridge inspection vehicle were difficult, which is why we adopted a "rack scaffold." Since the installation spans consist of five spans, we installed one unit on the high water bed and conducted inspection work by moving it from span to span until reaching the opposite bank. When moving over the piers, there was no need for lane restrictions or barges, so there was almost no impact on road users. Additionally, by using brackets to suspend the running rails from the ground cover, we were able to install them without using post-installed anchors. Furthermore, by using a mid-level scaffold, we were able to accommodate a 2.7m change in girder height. *For more details, please refer to the PDF materials or feel free to contact us.

• Scaffolding and Support Materials

We would like to introduce our construction achievements for the repair work on the Okaya Viaduct (a prestressed concrete five-span continuous frame box girder bridge) located between Okaya Junction and Okaya Interchange on the Nagano Expressway. Since the intersecting property is the JR Chuo Main Line, we adopted the "rack scaffolding," which allows for efficient scaffold installation even during limited working hours when the tracks are closed. Please feel free to contact us if you have any inquiries. 【Overview】 ■ Location/Prefecture: Nagano Prefecture ■ Client: East Japan Railway Company Nagano Branch ■ Construction Company: Tohoku Steel Industry Co., Ltd. ■ Start of Use: October 2015 ■ Local Workers' Experience with Rack Scaffolding: First time ■ Presence of Rack Scaffolding Handling Instructor: Yes *For more details, please refer to the PDF document or feel free to contact us.

• Scaffolding and Support Materials

We would like to introduce our construction achievements for the repair work on the Hamana Ohashi Bridge (a 5-span continuous frame bridge <PC box girder>) on National Route 1, Hamana Bypass. As the bridge spans Lake Hamana and has a high superstructure girder height, the large-scale temporary scaffolding became a maintenance management issue. To address this, we utilized "rack scaffolding" for the bridge inspection and repair work. 【Overview】 ■ Location/Prefecture: Shizuoka Prefecture ■ Client: Ministry of Land, Infrastructure, Transport and Tourism, Chubu Regional Development Bureau, Hamamatsu River and National Route Office ■ Construction Company: Nakamura Corporation ■ Start Date of Use: May 2017 ■ Local workers' experience with rack scaffolding: First time ■ Presence of rack scaffolding handling instructor: Yes *For more details, please refer to the PDF document or feel free to contact us.

• Scaffolding and Support Materials

We would like to introduce our construction achievements using "rack scaffolding." This was utilized for concrete spalling prevention work on the underside of the beams and the outer side of the wall railings of the Rokujō Overpass, Hayashi Overpass, Fuseishi Overpass, Sanjō Overpass, and Kamitenjin Overpass, which span the Takamatsu Expressway in Takamatsu City, Kagawa Prefecture. Underneath the targeted bridges, National Route 11 bypass runs parallel, and there were many intersections, making for challenging site conditions; however, we were able to use the scaffolding safely until the completion of the project. Please feel free to contact us when you need our services. 【Overview】 ■ Location/Prefecture: Kagawa Prefecture ■ Client: NEXCO West Japan Shikoku Branch ■ Construction Company: Fuji P.S. Co., Ltd. ■ Start Date of Use: May 2018 ■ Experience of On-site Workers with Rack Scaffolding: First time (including some experienced workers) ■ Availability of Rack Scaffolding Handling Instructors: Yes *For more details, please refer to the PDF document or feel free to contact us.

• Scaffolding and Support Materials

We would like to introduce our construction achievements using "rack scaffolding." This was utilized for the superstructure work of the Ariake Chikugo River Bridge (a steel four-span continuous <two-span> single-cable arch bridge) over the Chikugo River along National Route 208 on the Ariake Sea coast (for dismantling the suspended scaffolding and as a substitute for the suspended scaffolding). Please feel free to contact us when you need our services. 【Overview】 ■ Location/Prefecture: Fukuoka Prefecture ■ Client: Kyushu Regional Development Bureau, Ministry of Land, Infrastructure, Transport and Tourism ■ Construction Company: MMB, Miyachi, Kawada Joint Venture ■ Start Date of Use: July 2018 ■ Local Workers' Experience with Rack Scaffolding: First time ■ Availability of Rack Scaffolding Handling Instructors: Yes *For more details, please refer to the PDF document or feel free to contact us.

• Scaffolding and Support Materials

We would like to introduce our construction achievements for the concrete spalling prevention measures at the Yahata Bridge (a prestressed concrete three-span continuous frame box girder bridge) that crosses the JR Hanawa Line on the Tohoku Expressway. Given the site conditions where there is a significant change in girder height over the JR Hanawa Line, we adopted the "rack scaffolding." Please feel free to contact us if you have any inquiries. 【Overview】 ■ Location/Prefecture: Akita Prefecture ■ Client: East Japan Railway Company Morioka Branch ■ Construction Company: Senken Kogyo Co., Ltd. ■ Start of Use: May 2019 (up line), April 2020 (down line) ■ Experience of local workers in rack scaffolding construction: Yes ■ Availability of dispatched instructors for rack scaffolding handling: Yes *For more details, please refer to the PDF materials or feel free to contact us.

• Scaffolding and Support Materials