昭和コンクリート工業 List of Products and Services

■ "OGS Flume" is a three-sided water channel with a drop lid design. ■ It is standardized with a top width of 0.6m × height of 0.6m to a top width of 1.5m × height of 1.5m. Please feel free to contact us when you need assistance.

• Secondary steel products
• Foundation construction
• Other civil engineering works

■This is a standard from the Agricultural Civil Engineering Association. ■The base slab will be constructed with cast-in-place concrete. ■The width of the waterway can be freely set within the standards. ■The types are classified based on the superimposed load acting on the horizontal line at the top of the vertical wall and the soil conditions.

• Secondary steel products
• Foundation construction
• Other civil engineering works

■Compliant with the association-type culvert cross-section! Various processing options are available, including J-types with different side wall heights, top slant cuts, and openings. ■Various processing options are available, including J-types with different side wall heights, top slant cuts, and openings. ■Standardized dimensions are 1.0m in width × 1.0m to 3.5m in height × 2.5m.

• Secondary steel products
• Foundation construction
• Other civil engineering works

■It is used for field maintenance and land development. ■There are two types: Type 1 for use with the butt joint method and Type 2 for use with the socket method.

• Secondary steel products
• Foundation construction
• Other civil engineering works

■It is used for irrigation channels for agricultural land development. ■The socket does not protrude from the base plate and is flat, making installation easy.

• Secondary steel products
• Foundation construction
• Other civil engineering works

■The water collection holes are arranged in a staggered manner, resulting in high water collection functionality. ■The joint section has a fitting type, which ensures good workability.

• Secondary steel products
• Foundation construction
• Other civil engineering works

■ By utilizing precast technology, we achieve significant reductions in construction time and improvements in productivity. ■ The use of metal fittings accelerates construction and reduces labor on site. ■ It can accommodate drop heights of 500 to 1000 mm. ■ It is compatible with drainage flumes ranging from HF300 to HF900. ■ The standard extension for the waterway section is 4m for drainage flumes below HF500 and 6m for those above HF600. ■ By adjusting the extension and using a stepped drop, it can accommodate longitudinal slopes and effectively reduce flow velocity. *We can also consider specifications other than those listed. Please consult us.*

• Secondary steel products
• Foundation construction
• Other civil engineering works

■It is an assembly type. ■Installation is easy and can shorten construction time. ■Components can be reused. ■It is also possible to accommodate folding points and curves.

• Secondary steel products
• Foundation construction
• Other civil engineering works

■ By installation, we will reduce "ineffective discharge" and achieve water resource conservation. ■ By installation, we will reduce "ineffective discharge" and achieve water resource conservation. ■ It is easy to wash away accumulated sediment and other materials with the lifting handle. ■ By eliminating "overflow," we will not only eliminate "waste water" but also suppress "nutrient runoff," achieving water resource conservation and reducing environmental impact. ■ Since communication is not conducted, base station installation and communication volume are unnecessary. The simple structure is less prone to failure and easy to repair.

• others

■The method of stacking fishway blocks in an oval shape significantly reduces the site area. ■The product shapes used for the curved and straight sections are standardized, which enhances workability. ■By creating a track shape with straight sections between the semicircular parts, the flow conditions in the pool are adjusted to facilitate fish ascending. ■The slope of the fishway has the semicircular return section at level and the ascending straight section at a gentle slope of 1/10, improving the ascent efficiency compared to a circular shape. ■The partition wall adopts an ice harbor method that accommodates small fish species. ■By rounding the shape of the overflow section of the partition wall, it creates a submerged flow that is easier for fish to ascend. ■Overflowing at the fishway outlet section allows for adjustment of the fishway flow rate. ■Light windows are installed to ensure adequate illumination.

• Secondary steel products
• Foundation construction
• Other civil engineering works

■This product can uniformly form a soft overflow section curve that is easy for fish to ascend. ■When the optimal overflow water depth exceeds 10 cm, excess water overflows over the side walls and is eliminated, automatically stabilizing the flow conditions. ■It forms a fishway installed on a sloped foundation (1/8 to 1/10 gradient). ■The side walls at the top of the partition weir have a rounded raised shape, preventing fish from jumping out during their ascent. ■By installing it on a PC girder, it is also possible to construct a bridge-type switchback fishway.

• Secondary steel products
• Foundation construction
• Other civil engineering works

This is a fish nest block that has a shape resembling a cut top slab and upper side walls of a box culvert. It creates natural depressions suitable for the ecological environment of aquatic life. The block has good water and light permeability, making it suitable for the growth environment of aquatic plants, algae, and plankton. It allows for relatively easy inflow and outflow of sediment, which helps prevent functional degradation. By laying stones on the bottom slab, a natural environment is formed, making it suitable for the activities and spawning behaviors of aquatic life. Its stepped structure helps prevent water accidents caused by falls or slips, and it provides a platform for cleaning operations within rivers. Patterns can be added to the front wall, harmonizing with the landscape. The slope can be freely selected (1: 0.5 to 2.0). The stagnant water areas are conducive to the growth of reeds and other vegetation, creating an environment for bird nesting. It is easy to install and does not require specialized skills such as those needed for block work. It can be used not only as a fish nest but also as a fishway.

• Secondary steel products
• Foundation construction
• Other civil engineering works

■Early flood prevention measures are possible. ■The impact on the surrounding environment can be minimized. ■It accommodates product heights of 1.1 to 1.5 meters. ■No need for cast-in-place concrete. ■Easy installation, shortened construction period, and labor-saving on-site work can be achieved. ■A shape is adopted that sets the backfill height low to minimize the impact on existing structures. ■It has a strong integrity with three reinforced fittings. ■Waterproofing between products is ensured by sealing materials.

• Secondary steel products
• Foundation construction
• Other civil engineering works

■This is a slab for crossing waterways, such as roads and agricultural roads. ■By shaping it into a π shape, we have achieved weight reduction compared to rectangular RC slabs. ■You can choose the design load from T-6t, T-10t, and pedestrian load (5.0 kN/m²).

• Secondary steel products
• Foundation construction
• Other civil engineering works

■This is a slab for crossing water channels such as agricultural roads. ■The design load is only T-6t. ■The product width is 50cm, making it lightweight, and it can accommodate widths in 0.5m increments. ■The maximum applicable span for the slab is 3.5m.

• Secondary steel products
• Foundation construction
• Other civil engineering works

■The design load can accommodate sidewalk loads (5.0 kN/m2) and vehicle loads, etc. ■The basic width of the RC and PC slabs is 1.0 m. The thickness varies depending on the load. ■The maximum span for RC slabs is approximately 4.0 m, while for PC slabs it is approximately 7.0 m. ■The standard concrete strength is σck = 40 N/mm2.

• Secondary steel products
• Foundation construction
• Other civil engineering works

■ This is a retaining wall and soundproofing panel according to NEXCO (formerly JH) specifications. ■ It is also possible to consider additional design conditions separately.

• Secondary steel products
• Foundation construction
• Other civil engineering works

■There are many aspects that can be addressed with factory-made products, allowing for a reduction in construction time. ■Measures against salt damage are possible, and durability is excellent. ■It has high rigidity and toughness, resulting in a stable structure. ■It is possible to reduce damage from disasters and quickly restore damaged areas. ■We can propose at a scale with a high local return rate.

• Secondary steel products
• Foundation construction
• Other civil engineering works

The "Precast Saya Pipe Block" is a method for strengthening embankments that is installed around bridge piers to prevent the transmission of vibrations from the piers during an earthquake. Products in circular or rectangular shapes are used vertically according to the shape of the bridge pier, creating a gap around the pier. This absorbs the relative displacement between the pier and the embankment, mitigating the impact on the embankment. 【Construction Steps】(Procedure for each layer) (1) Delivery of materials (2) Assembly of U-shaped components (R components) (3) Joint treatment of components (4) Assembly of rectangular components (5) Pulling the product closer (6) Injection of upper and lower mortar (7) Installation of rubber plates (8) Completion of one layer

• Secondary steel products
• Foundation construction
• Other civil engineering works

■The toilet environment can be quickly secured as it can be used immediately after the temporary tent booth is set up. ■The entrance step can be minimized, making it easier for those requiring assistance to use. ■The installation of large temporary tent booths allows for wheelchair access. ■The adoption of PCaBOX enables construction in a short period. ■The underground box cross-section can be selected according to the required capacity.

• Secondary steel products
• Foundation construction
• Other civil engineering works

■The upper part can be used as a schoolyard, parking lot, park, etc. ■A significant reduction in construction time is possible. ■It leads to a reduction in total costs. ■The retention basin will serve as a disaster prevention base during earthquakes. ■By replacing the bottom slab with crushed stone, it can also be used as an infiltration facility.

• Secondary steel products
• Foundation construction
• Other civil engineering works

■The main body material can be easily installed manually, and the side panel material can be attached with a single touch. ■Utilizing the communication structure within the tank allows for cleaning operations using maintenance tools (self-propelled cameras, vacuum hoses), resulting in excellent maintainability. ■This material can be delivered to the site without using pallets, eliminating the need for pallet collection and industrial waste disposal after installation. ■The product complies with Environmental Agency Notification No. 46 regarding environmental standards related to soil contamination and meets RoHS standards.

• Secondary steel products
• Foundation construction
• Other civil engineering works

■The member shape is based on the design guidelines of the Hokuriku Regional Development Bureau (σck=60N/mm2). ■Member selection is carried out considering load conditions, road width, and building height limits, making it compatible with all roads. ■The structural types can be broadly classified into three categories: - Simple beam type (1 hinge, 1 roller) - Inverted L type (1 rigid, 2 hinges) - 2 rigid connection type (2 rigid, 2 hinges)

• Secondary steel products
• Foundation construction
• Other civil engineering works

■The member shape is based on the design guidelines of the Hokuriku Regional Development Bureau (σ ck=60N/mm2). ■Member selection is carried out considering load conditions, road width, and construction height limits, making it compatible with all roads. ■The structural forms are broadly classified into three types: - Simple beam type (1 hinge, 1 roller) - Inverted L type (1 fixed, 2 hinges) - 2 fixed connection type (2 fixed, 2 hinges)

• Secondary steel products
• Foundation construction
• Other civil engineering works

■The shape of the materials is designed based on the Road Snow Prevention Manual published by the Hokuriku Construction Welfare Association (σck = 60N/㎟). ■The type selection will be made considering the amount of snow accumulation due to snow collapse. ■The structural form is a 1 rigid and 2 hinge structure, taking into account economic efficiency.

• Secondary steel products
• Foundation construction
• Other civil engineering works

■This structure is the optimal construction method for terrain other than collapsed earth and overhanging slopes. ■The shape of the components is designed similarly to the rock sheds in the Hokuriku region's design guidelines (σck = 60 N/㎟). ■The type selection will be based on the impact force of falling rocks. ■The structural form is a rigid one and two-hinge structure, considering economic efficiency.

• Secondary steel products
• Foundation construction
• Other civil engineering works

■The shape of the components is based on the standard design type from the Snow Prevention Manual for Roads published by the Hokuriku Construction Welfare Association (σck = 60N/㎟). ■Considering the design snow depth, road width, and construction limits, we select components that are suitable for all roads. ■The structural form is a three-hinged arch structure, designed with economic efficiency in mind.

• Secondary steel products
• Foundation construction
• Other civil engineering works

<Extremely Excellent Shock Absorption Performance> ■ The Geo-Lock Wall primarily uses soil and geosynthetics as its main materials. ■ Its unique flexible structure characteristic of soil structures efficiently absorbs shocks and can handle large-scale impact energy. <Construction Costs are 50-65% of Conventional Methods> ■ The main material is soil, allowing the use of locally generated soil and construction waste as materials. ■ It can be constructed using only general earthworks, without the need for specialized techniques by skilled workers. ■ Compared to other methods, it is significantly more economical in terms of energy absorption levels. <Can Be Installed in Various Terrains and Grounds> ■ Being a soil structure, it can be installed in various terrains, including sites with limited installation space, sites with longitudinal slopes, and sites with valley topography. ■ Since it does not transmit shock forces to the supporting ground, ground improvement or other treatments are usually unnecessary. <Environmentally Friendly and Aesthetic Coexistence> ■ By greening the wall surface with vegetation, it harmonizes with the surrounding landscape. <Easy Maintenance After Rockfall Capture> ■ Even if damage occurs due to disasters, repairs can be made by replacing partial components.

• Secondary steel products
• Foundation construction
• Other civil engineering works

<Lineup> ■ Landslide debris protection fence "Slope Guard Fence Type LE" ■ Avalanche protection fence "Slope Guard Fence Type LS" ■ Rockfall protection fence "Slope Guard Fence Type LR" ■ Rockfall protection fence "SPARC Fence" ■ Avalanche prevention measure "SPARC Fence Type S" ■ Reinforcement work for existing rockfall protection measures "Reinforced Fence" ■ Reinforcement work for existing rockfall protection measures "Reinforced Fence Type L" ■ Pocket-type rockfall protection net "Slope Guard Net Type R" ■ Collapse snow protection net "Slope Guard Net Type S"

• Secondary steel products
• Foundation construction
• Other civil engineering works

■ It can shorten the construction period by reducing the time for formwork installation. ■ It improves safety. ■ It ensures high quality. ■ Products that consider the landscape can be produced.

• Formwork material

<Ensuring Safety and Planning> ■ The residual formwork method allows for construction in stages, eliminating enclosure and enabling quick evacuation in emergencies. ■ The residual formwork itself is self-supporting, allowing for safe operations underwater. ■ It is possible to ensure planning for offshore construction, which is easily affected by weather and sea conditions. <Economic Efficiency and Improved Workability> ■ The absence of enclosed spaces improves work efficiency, leading to shortened construction periods. ■ The lightweight of the products allows for construction using small machinery. ■ In conventional methods, a minimum width of 1.0 m was required for underwater work space for stability calculations, but with the residual formwork method that does not require enclosed spaces, designs can be made according to stability calculations, reducing the amount of concrete needed. <Simplification of Material Procurement> ■ Staged construction makes it easy to secure ready-mixed concrete and improves workability, enabling small-scale placements in fishing port construction. ■ Material delivery is limited to what is needed for staged construction, reducing yard area and simplifying yard planning.

• Coastal construction
• Harbor Construction
• Other civil engineering works

■Since you only need to drive the wedge part with a hammer, installation is very simple and quick. ■It uses a rubber material that is extremely resistant to weathering. ■There is almost no deterioration of the rubber, allowing for long-term use of the joint material. ■Displacement due to differential settlement has been confirmed to withstand an average of 4-5 cm and a maximum of 7 cm for V-troughs, and an average of 4-5 cm and a maximum of 9.5 cm for PC flumes.

• Joint material

• Other civil engineering works
• Formwork material

■This product is a bottom drain pipe that adopts the TSKJ method. ■Compared to site-cast structures using Hume pipes, it significantly shortens construction time and minimizes the duration of temporary drainage work and excavation. ■It can greatly reduce construction time compared to water-stopping walls built on-site. ■The joints between the bottom drain pipe and the water-stopping wall also employ a complete water-stopping method, eliminating the risk of leakage. ■The use of a segmented design helps to reduce the weight of the product. ■High water-stopping performance swelling gaskets are used at the product joints. ■Adjustments can be made in both vertical and horizontal directions according to the site (up to +500 to 1000mm beyond the external width of each size product).

• Other civil engineering works
• Prefabricated Concrete Products

■ It is mainly used as the deck slab of steel minor girder bridges. ■ Generally, the deck slab span direction is a PC structure fixed by the pretension method. ■ In the direction perpendicular to the deck slab span (vehicle travel direction), it is an RC structure that integrates individual precast deck slabs with loop joint structures using cast-in-place concrete at the infill locations. ■ Compared to RC deck slabs, it allows for the reduction of minor girders due to the elongation of the deck slab, while also providing excellent durability. ■ Utilizing the characteristics of factory production, it can adapt to various site conditions. ■ There are numerous delivery records, including for highways and national roads.

• Reinforcement and repair materials

■ Since it uses a connection fitting method, there is no need for on-site work such as formwork or concrete pouring, allowing for a reduction in construction time of about 40% compared to on-site casting. ■ By providing shear keys at the joints, it prevents misalignment and steps between products. ■ Since the connecting steel materials and rebar do not protrude from the products, it allows for slide installation from above, making it suitable for construction in narrow spaces. ■ It is a simple task of just connecting bolts, so it does not require skilled workers. ■ It can accommodate any desired member thickness or angled shape. ■ Being a precast product, it offers high strength and quality, reducing long-term lifecycle costs.

• Secondary steel products
• Foundation construction
• Other civil engineering works

The joint between the concrete slab and the precast wall railing is designed with a loop-shaped rebar arrangement, considering height adjustment and rapid construction, making it adaptable for slab replacement or new structures. This rebar arrangement achieves a continuous structure. The connection between precast wall railings employs a special joint structure where a PBL joint protruding from one side of the joint surface is inserted into the other wall railing, ensuring continuity of the wall railings, facilitating rapid construction, and minimizing the area for post-construction work.

• Secondary steel products
• Foundation construction
• Other civil engineering works

■ No changes to the indoor layout are necessary due to reinforcement from the outside. ■ It allows for low noise, low vibration, and dust-free construction, resulting in minimal environmental impact and enabling continued use of the building during the construction period. ■ The diagonal PC steel materials arranged within the structural frame are slender, with a maximum diameter of 40mm, while possessing high durability and excellent recovery characteristics, without obstructing natural light or ventilation after reinforcement. ■ By having the majority of the reinforcement capacity supported by diagonal PC steel materials, the cross-section of the PCa components remains slender. ■ The main components are precast materials (factory products), which reduces on-site work and shortens the construction period. ■ Cost reduction is achieved through the miniaturization of components.

• Earth retaining wall/foundation reinforcement
• Earthquake-resistant construction method
• Vibration isolation, vibration control, and earthquake resistance construction