大正鉄筋コンクリート List of Products and Services

【Construction Case Studies】 ○ Inner Cylinder Renovation Work, Carbon Fiber Reinforcement, H=59m (1) ○ Inner Cylinder Renovation Work, Carbon Fiber Reinforcement, H=59m (2) ○ Inner Cylinder Renovation Work, H=58m ○ Drainage Pump Station Exhaust Duct Work (1) ○ Drainage Pump Station Exhaust Duct Work (2) ○ Pier Construction For more details, please contact us.

• Dismantling and moving
• Facility Design
• Other construction services

【Construction Case Studies】 ○ PC Water Distribution Tank 4,000×2 units ○ PC Water Distribution Tank 1,400×2 units ○ Water Supply Regulation Tank 20,000×2 units ○ PC Water Distribution Tank 1,150×2 units ○ PC Water Supply Tower 200t Double Tank ○ Egg-shaped Prestressed Concrete Sludge Digestion Tank For more details, please contact us.

• Dismantling and moving
• Facility Design
• Other construction services

【Construction Examples】 ○ Coal Silo 70,000t × 8 units, Coal Silo 70,000t × 4 units ○ Coal Silo 100,000t ○ Cement Silo 8,000t, 30,000t × 2 units ○ Coal Silo 7,000t × 3 units ○ Cement Silo 10,000t, 30,000t × 2 units ○ Cement Silo 10,000t ○ Blast Furnace Slag Silo 30,000t For more details, please contact us.

• Dismantling and moving
• Facility Design
• Other construction services

【Construction Case Studies】 ○ Thermal Power Plant 198m ○ Waste Treatment Plant 130m ○ Waste Treatment Plant 87.5m ○ Waste Treatment Plant 174.5m ○ Waste Treatment Plant 150m For more details, please contact us.

• Incinerators and chimneys
• Facility Design
• Other construction services

The large formal climbing scaffold method was developed primarily as an external scaffold for the dismantling of circular RC chimneys. Recently, it has also been used for exterior wall repairs of circular chimneys. The scaffold is installed only in the work area, so it has similar characteristics to the large formal self-climbing scaffold. 【Features】 ○ It wraps around the lower part of the chimney and ascends by shifting the bands alternately in two tiers upwards. ○ At the top, the chimney is dismantled using a compressor, and it descends while shifting downwards. ○ Concrete debris is poured into the interior of the chimney. ○ It has already achieved numerous successful results. ○ The fact that no accidents or troubles have occurred so far is its greatest feature. For more details, please contact us.

• Renovation and repair methods
• Special Construction Method

The large formal self-elevating scaffold was developed as an external scaffold for the construction of new RC chimneys and silos. The structure is installed only in the work area (1.8m x 2 levels from the top) on a steel frame. The working platform consists of two levels: upper and lower. There is no need to assemble it from the ground like a frame or single-pipe scaffold, making it user-friendly, requiring fewer materials, and having a simple and safe structure. 【Features】 - Assembly and disassembly only require one time each at the beginning and end. - It offers numerous economic advantages. - It is optimal as a scaffold for high-rise structures with the same external cross-section, such as chimneys and silos. - There are already numerous proven results. - The fact that no accidents or troubles have occurred so far is its greatest feature. For more details, please contact us.

• Scaffolding and Support Materials

The slide construction method involves attaching formwork and internal and external working platforms to a frame made of steel (such as H-beams) called a yoke, and then using jacks to raise the working platforms along with steel rods embedded in concrete as reaction forces. The working platforms are constructed in three tiers—upper, middle, and lower—according to the work requirements, with rebar reinforcement, concrete pouring, and plaster finishing both inside and outside. Additionally, if the roof of structures like silos is made of steel, connecting the steel parts to the yoke and raising them simultaneously makes it easier to maintain verticality and roundness, eliminates the need for steel frame erection, and enhances safety. **Features** - The biggest feature of the slide construction method is the reduction of construction time. - Concrete pouring can be done daily after the assembly of the equipment is completed. - It is ideal for super-tall chimneys (H=100-200m) and sites with no construction time constraints. - Continuous concrete pouring minimizes joints. - It is also beneficial in terms of quality. For more details, please contact us.

• Renovation and repair methods

【Features】 ○ Large panel construction method ○ Setting the height of a single concrete pour to approximately 3.0m to 6.0m ○ A method that involves repeated construction of scaffolding → rebar → formwork → concrete ○ There is also a method where scaffolding uses embedded hardware as a reaction force to raise the work platform with hydraulic jacks (2.75m per stage) ○ We will provide a safe and optimal plan depending on the project Please contact us for more details.

• Renovation and repair methods

【Features】 ○ The height of a single concrete placement is set to about 1.8 meters. ○ A construction method that involves repeated processes of scaffolding → rebar placement → formwork → concrete. ○ External scaffolding uses self-climbing scaffolding. ○ Internal scaffolding is raised using an electric chain block, supported by hardware embedded in the poured concrete. ○ Excellent safety, workability, and cost-effectiveness for structures of a certain scale. For more details, please contact us.

• Scaffolding and Support Materials

【Features】 ○ Set the height of a single concrete pour to approximately 1.8m ○ A construction method that involves repeated processes of scaffolding → rebar placement → formwork → concrete ○ For formwork, metal forms are primarily used for chimneys, silos, and PC tanks ○ The working scaffolding uses both internal and external frame scaffolding and single-pipe scaffolding ○ External scaffolding includes self-climbing scaffolding developed by Taisho Reinforced Concrete For more details, please contact us.

• Renovation and repair methods