米山工業 List of Products and Services

The "Rack Scaffolding (R)" is a mobile suspended scaffold that uses two rack rails installed on a structure as its track. After installing the movable floor of the rack scaffolding, only the extension work of the rack rails, which serve as the track, remains, allowing for a significant reduction in the construction period for scaffold work. Additionally, during the extension work of the rack rails, workers are always within the handrail area, which enhances safety during construction. In recent years, these features have been utilized for the installation of new bridges, inspection and repair work on existing bridges, and ceiling finishing in large buildings. [Features] ■ High safety ■ Rapid construction possible ■ Excellent cost-effectiveness ■ Material savings possible ■ Compatible with various shapes of structures *For more details, please download the PDF or feel free to contact us.

The "Rack Scaffold (R)" is a mobile suspended scaffold that uses two rack rails installed on a structure as its track. After installing the rack scaffold's movable floor, only the extension work of the rack rails, which serve as the track, is required, allowing for a significant reduction in construction time for scaffold workers. It can demonstrate its characteristics in various sites, and in locations where "work using the scaffold and ground work need to be performed simultaneously," there is no need to set up a frame scaffold from the ground, thus not hindering ground work and requiring no time for scaffold movement. 【Features of Rack Scaffold (R)】 ■ High safety ■ Quick installation possible ■ Excellent cost-effectiveness ■ Material-saving capability ■ Compatible with various shapes of structures *For more details, please refer to the PDF materials or feel free to contact us.

The "Rack Scaffold (R)" is a mobile suspended scaffold that uses two rack rails installed on a structure as its track. After installing the rack scaffold mobile floor, only the extension work of the rack rails, which serve as the track, is required, allowing for a significant reduction in construction time for scaffold work. It can demonstrate its characteristics in various sites, and in "sites where the shape requiring scaffolding is particularly long in one direction," after installing the rack scaffold mobile floor, only the extension of the running rails is needed, making it more economical the longer the travel distance. 【Features of Rack Scaffold (R)】 ■ High safety ■ Quick installation possible ■ Excellent economy ■ Material savings possible ■ Compatible with various shapes of structures *For more details, please refer to the PDF document or feel free to contact us.

The "Rack Scaffolding (R)" is a movable suspended scaffold that uses two rack rails installed on a structure as its track. After installing the movable floor of the rack scaffolding, only the extension work of the rack rails, which serve as the track, remains, allowing for a significant reduction in the construction period for scaffolding work. It can demonstrate its characteristics at various sites, and in locations where "a shorter construction period than conventional methods is required," it does not require the erection of frame scaffolding from the ground, thus preventing excessive material usage or prolonged construction periods due to the height of the work surface. 【Features of Rack Scaffolding (R)】 ■ High safety ■ Quick installation possible ■ Excellent cost-effectiveness ■ Material reduction possible ■ Compatible with various shapes of structures *For more details, please refer to the PDF document or feel free to contact us.

The "Rack Scaffold (R)" is a mobile suspended scaffold that uses two rack rails installed on a structure as its track. After installing the rack scaffold mobile floor, only the extension work of the rack rails, which serve as the track, remains, allowing for a significant reduction in the construction period for scaffold work. It can demonstrate its characteristics in various sites, and in locations where "there is a need to quickly install scaffolding during the night when the factory is not in operation," only the extension of the running rails is required after the installation of the rack scaffold mobile floor, enabling rapid scaffold installation. 【Features of Rack Scaffold (R)】 ■ High safety ■ Quick construction possible ■ Excellent cost-effectiveness ■ Resource-saving possible ■ Compatible with various shapes of structures *For more details, please refer to the PDF materials or feel free to contact us.

The "Rack Scaffold (R)" is a movable suspended scaffold that uses two rack rails installed on a structure as its track. After installing the movable floor of the rack scaffold, only the extension work of the rack rails, which serve as the track, is required, allowing for a significant reduction in the construction period for scaffold work. It can demonstrate its characteristics in various sites, and in locations where "there is a need to quickly respond to changes in the level of the work surface," level changes can be made quickly and easily by simply adjusting the length of the suspended material of the rack scaffold. 【Features of Rack Scaffold (R)】 ■ High safety ■ Quick installation possible ■ Excellent cost-effectiveness ■ Resource-saving possible ■ Compatible with various shapes of structures *For more details, please refer to the PDF materials or feel free to contact us.

The "Rack Scaffolding (R)" is a movable suspended scaffolding that uses two rack rails installed on a structure as its track. After installing the movable floor of the rack scaffolding, only the extension work of the rack rails, which serve as the track, remains, allowing for a significant reduction in the construction period for scaffolding work. It demonstrates its characteristics at various sites, and for "bridges over railways and main roads," the movable floor of the rack scaffolding can be secured outside the impact range of railways and main roads when not in use, minimizing the risk of damage from potential scaffold falls due to earthquakes and other events. 【Features of Rack Scaffolding (R)】 ■ High safety ■ Quick installation possible ■ Excellent cost-effectiveness ■ Material-saving potential ■ Compatible with various structural shapes *For more details, please refer to the PDF materials or feel free to contact us.

The "Rack Scaffolding (R)" is a movable suspended scaffolding that uses two rack rails installed on a structure as its track. After installing the movable floor of the rack scaffolding, only the extension work of the rack rails, which serve as the track, is required, allowing for a significant reduction in the construction period for scaffolding work. It demonstrates its characteristics at various sites, and in situations where "there is a need to quickly install a full suspended scaffolding on bridges over railways or main roads," the movable floor of the rack scaffolding can be assembled outside the influence area of the railway or main road, enabling the sequential deployment of the movable floor within a limited time to achieve a full suspended scaffolding state. [Rack Scaffolding (R) Features] ■ High safety ■ Quick installation possible ■ Excellent cost-effectiveness ■ Material-saving potential ■ Compatible with various shapes of structures *For more details, please refer to the PDF document or feel free to contact us.

The "Rack Scaffolding (R)" is a mobile suspended scaffolding that uses two rack rails installed on a structure as its track. After installing the rack scaffolding mobile floor, only the extension work of the rack rails, which serve as the track, is required, significantly shortening the construction period for scaffolding work. It demonstrates its characteristics in various sites, and in "bridge inspections," it can quickly set up and dismantle scaffolding in areas that are unreachable by the bucket of a bridge inspection vehicle. 【Features of Rack Scaffolding (R)】 ■ High safety ■ Quick installation possible ■ Excellent cost-effectiveness ■ Material-saving possible ■ Compatible with various shapes of structures *For more details, please refer to the PDF materials or feel free to contact us.

The "Rack Scaffolding (R)" is a movable suspended scaffold that uses two rack rails installed on a structure as its track. After installing the movable floor of the rack scaffolding, only the extension work of the rack rails, which serve as the track, remains, allowing for a significant reduction in construction time for scaffold workers. It demonstrates its characteristics at various sites, and in locations where "the movement of rack scaffolding can be utilized for material transportation," it is possible to load and transport materials on the movable floor of the rack scaffolding. This makes it easy to transport materials that would be difficult to carry manually with conventional suspended scaffolding. 【Features of Rack Scaffolding (R)】 ■ High safety ■ Quick installation ■ Excellent cost-effectiveness ■ Material-saving potential ■ Compatible with various structural shapes *For more details, please refer to the PDF document or feel free to contact us.

The "Rack Scaffold (R)" is a movable suspended scaffold that uses two rack rails installed on a structure as its track. After installing the movable floor of the rack scaffold, only the extension work of the rack rails, which serve as the track, remains, significantly shortening the construction period for scaffold workers. It can demonstrate its characteristics in various sites, and in the case of “fall prevention sheet installation work and fall prevention net installation work,” there are significantly fewer hanging materials compared to full suspended scaffolds, resulting in higher work efficiency for sheet and net installation. 【Features of Rack Scaffold (R)】 ■ High safety ■ Quick installation possible ■ Excellent cost-effectiveness ■ Material conservation possible ■ Compatible with various shapes of structures *For more details, please refer to the PDF materials or feel free to contact us.

The "Rack Scaffolding (R)" is a mobile suspended scaffolding that uses two rack rails installed on the structure as its track. After installing the rack scaffolding mobile floor, only the extension work of the rack rails, which serve as the track, remains, allowing for a significant reduction in the construction period for scaffolding work. It can demonstrate its characteristics in various sites, and in locations where "there is a need to reduce traffic restrictions on main roads under bridges," the rack scaffolding can cover the area below the full suspended scaffolding installation site in advance, utilizing the rack scaffolding as a fall protection facility. 【Features of Rack Scaffolding (R)】 ■ High safety ■ Quick installation possible ■ Excellent cost-effectiveness ■ Material-saving capability ■ Compatible with various shapes of structures *For more details, please refer to the PDF materials or feel free to contact us.

The "Rack Scaffold (R)" is a mobile suspended scaffold that uses two rack rails installed on a structure as its track. After installing the moving floor of the rack scaffold, only the extension work of the rack rails, which serve as the track, is required, allowing for a significant reduction in the construction period for scaffold work. It demonstrates its characteristics in various sites, and in "sites where transporting a large amount of suspended scaffold materials is difficult," the only necessary materials are the moving floor that the workers board and the running rail materials, resulting in material savings. 【Features of Rack Scaffold (R)】 ■ High safety ■ Quick installation possible ■ Excellent cost-effectiveness ■ Material savings possible ■ Compatible with various shapes of structures *For more details, please refer to the PDF document or feel free to contact us.

The "Rack Scaffolding (R)" is a mobile suspended scaffold that uses two rack rails installed on a structure as its track. After installing the rack scaffolding mobile floor, only the extension work of the rack rails, which serve as the track, remains, allowing for a significant reduction in the construction period for scaffold workers. It demonstrates its characteristics in various sites, and in the case of "bridges over navigation routes," even if the rack scaffolding mobile floor encroaches on the navigation limits, it can be stopped and secured outside the navigation limits when not in use, minimizing the impact on navigating vessels. 【Features of Rack Scaffolding (R)】 ■ High safety ■ Quick installation ■ Excellent cost-effectiveness ■ Resource-saving ■ Compatible with various structural shapes *For more details, please refer to the PDF materials or feel free to contact us.

The "Rack Scaffolding (R)" is a movable suspended scaffold that uses two rack rails installed on a structure as its track. After installing the movable floor of the rack scaffolding, only the extension work of the rack rails, which serve as the track, remains, allowing for a significant reduction in the construction period for scaffold work. It demonstrates its characteristics in various sites, and in cases where "the rack scaffolding is moved over the bridge pier to the next span," it can be installed on multi-span bridges using materials for just one span, with successful projects such as the Takizawa River Bridge. 【Features of Rack Scaffolding (R)】 ■ High safety ■ Quick installation possible ■ Excellent cost-effectiveness ■ Material-saving capability ■ Compatible with various shapes of structures *For more details, please refer to the PDF materials or feel free to contact us.

The "Rack Scaffolding (R)" is a mobile suspended scaffolding that uses two rack rails installed on a structure as its track. After installing the movable floor of the rack scaffolding, only the extension work of the rack rails, which serve as the track, remains, allowing for a significant reduction in construction time for scaffolding work. It demonstrates its characteristics in various sites, and in cases where "the rack scaffolding is moved over the bridge pier to the next span," it can be installed on multi-span bridges using materials for just one span, with successful projects such as the Morimoto River Bridge. 【Features of Rack Scaffolding (R)】 ■ High safety ■ Quick installation possible ■ Excellent cost-effectiveness ■ Material-saving capability ■ Compatible with various structural shapes *For more details, please refer to the PDF materials or feel free to contact us.

The "Rack Scaffold (R)" is a mobile suspended scaffold that uses two rack rails installed on a structure as its track. After installing the rack scaffold's movable floor, only the extension work of the rack rails, which serve as the track, is required, allowing for a significant reduction in the construction period for scaffold work. It demonstrates its characteristics in various sites, and for "inspection of external work vehicles," the rack scaffold can be installed with minimal materials and is lightweight, making it suitable even when the load capacity of the work vehicle is small. 【Features of Rack Scaffold (R)】 ■ High safety ■ Quick installation possible ■ Excellent cost-effectiveness ■ Material-saving capabilities ■ Compatible with various shapes of structures *For more details, please refer to the PDF document or feel free to contact us.

We would like to introduce our construction achievements of the "rack scaffolding." In the construction work of the Iwaki Bridge (new construction) connecting Iwaki Island and Ikina Island in the Seto Inland Sea, it was utilized for the bolting and painting of the main girder connection and the tensioning work of the diagonal members. Please feel free to contact us when you need our services. 【Overview】 ■ Location/Prefecture: Kamijima Town, Ochi District, Ehime Prefecture ■ Client: Ehime Prefecture ■ Construction Companies - Project 1: Kajima, MMB, Fuji P.S. JV - Project 2: Mitsui Sumitomo Construction, Mitsui Sumitomo Construction Steel Engineering, Showa Concrete Industry JV *For more details, please refer to the PDF materials or feel free to contact us.

We would like to introduce our construction achievements of "rack scaffolding." In the new construction of the Tamagawa Sky Bridge connecting Haneda Airport and Tonomachi in Kawasaki City, we were utilized for the high-strength bolt work at the main girder connection and on-site painting work. Please feel free to contact us when you need our services. 【Overview】 ■Location/Prefecture: Tokyo, Kanagawa ■Client: Tokyo Metropolitan Government, Kawasaki City ■Contractors: Goyo Construction, Hitachi Zosen, Fudo Tetra, Yokogawa Bridge, Honma Corporation, Takada Kiko Special Construction *For more details, please refer to the PDF document or feel free to contact us.

We would like to introduce our construction achievements of the "rack scaffolding." It was utilized for the periodic inspection of the reinforcement girders of the simple truss section, side span section, and central span section of the Wakatō Bridge, which spans the Dokai Bay on the Wakamatsu side of National Route 199. Please feel free to contact us when you need our services. 【Overview】 ■ Location/Prefecture: Fukuoka Prefecture ■ Client: Kitakyushu City ■ Construction Company: IHI Infrastructure Systems Co., Ltd. ■ Start Date of Use: November 2021 ■ Experience of Local Workers in Rack Scaffolding Construction: Yes ■ Availability of Rack Scaffolding Handling Instructors: Yes *For more details, please refer to the PDF materials or feel free to contact us.

We would like to introduce our construction achievements related to the seismic reinforcement work on the main bridge section (a prestressed concrete two-span continuous cable-stayed bridge) of the Tajiri Sky Bridge, which spans the Tajiri Fishing Port, along Osaka Prefectural Route 63, Izumisano-Iwade Line. The issue of yacht masts interfering with the permanent suspended scaffolding and rendering navigation impossible for vessels entering and exiting Tajiri Fishing Port was resolved by using a "rack scaffold." Additionally, after conducting a full-scale load test to confirm safety, we utilized floor truss materials with increased rigidity. As a result, it became possible to widen the spacing between the left and right rails compared to the initial plan. We changed the method of fixing the rail suspension points to the main girder from post-installed anchors to ground-mounted brackets (which do not require post-installed anchors), allowing us to lay the rails without damaging the main girder. The full-scale load test conducted this time expanded the maximum spacing between the left and right rails from 24 meters to 29 meters, enabling us to accommodate wider bridges as well. *For more details, please refer to the PDF document or feel free to contact us.*

We would like to introduce our construction achievements using "rack scaffolding." The concrete fall prevention measures were utilized for the Shimotsuke Ohashi Bridge (a prestressed concrete three-span continuous frame box girder bridge) that spans the JR Tohoku Shinkansen and JR Tohoku Main Line on the Kita-Kanto Expressway. For the JR Tohoku Main Line, it was adopted under site conditions where there is a significant change in girder height. 【Overview】 ■ Location/Prefecture: Tochigi Prefecture ■ Client: East Japan Railway Company, Omiya Branch ■ Construction Company: Tekken Construction Co., Ltd. ■ Start Date of Use: February 2019 (on conventional lines), April 2019 (on Shinkansen) ■ Experience of local workers in rack scaffolding construction: First time ■ Presence of rack scaffolding handling instructor: Yes *For more details, please refer to the PDF document or feel free to contact us.

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.

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.

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.

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.

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.

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.

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.

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.

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.*

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.

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.

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.

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.*

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.