Super large box culvert with post-tensioned PC steel materials arranged in the top slab.
■NETIS CB-080002-A (Publication Ended) ■This is a box culvert with a PRC structure using PC steel materials for the top slab and side wall components. ■It is applicable for ultra-large cross-sections ranging from 10.0m to 13.0m in width. (Please consult us if it exceeds 13.0m) ■The top slab and side wall components are made of precast concrete, while the bottom slab component is constructed with cast-in-place concrete. ■To shorten construction time, it is also possible to precast the bottom slab component. ■The angle can be freely set up to 75°. (Please contact us for angles less than 75°) ■It is widely adopted as an alternative to small-scale bridges at many sites.
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basic information
【Design Conditions】 Soil Cover: 0.2m to 2.0m Dead Load Unit Weight of Reinforced Concrete: 24.5 kN/m³ Unit Weight of Soil: 18.0 kN/m³ Unit Weight of Asphalt: 22.5 kN/m³ Live Load (Road Crossing): T-25t Horizontal Earth Pressure Coefficient: 0.50 Groundwater Level: Not considered Applicable Ground: Generally, good ground of ordinary level or higher. Allowable Tensile Stress of Reinforcement: 180 N/mm² Side Wall Joint Method: Jointed with PC Steel Bars Concrete Design Standard Strength: Top Slab Member: 50 N/mm² Side Wall Member: 40 N/mm² Bottom Slab Member: 30 N/mm² (cast in two locations) *Separate considerations can be made outside of the above design conditions. *If the inside of the box has a roadway, sidewalk, and high external water level, water stop measures need to be considered.
Price information
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Delivery Time
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Applications/Examples of results
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Detailed information
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Construction Achievements Fukushima Prefecture (Station Front Terminal)
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Construction achievements Saitama Prefecture (73° inclined box)
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Construction Achievements Gifu Prefecture
CAD data（8）
| Model number | overview | File |
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| swb_10000x5500.dxf |
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| swb_11000x5500.dxf |
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| swb_12000x5500.dxf |
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| swb_13000x5500.dxf |
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| swb_10000x5500.sfc |
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| swb_11000x5500.sfc |
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| swb_12000x5500.sfc |
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| swb_13000x5500.sfc |
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Company information
Our company, under the belief of contributing to society through the development of social infrastructure, constantly strives for quality improvement and technical advancement. With the conviction that business is about people, we respect humanity, engage in talent development and fair personnel practices, and cultivate a free and open corporate culture. We aim to deepen mutual understanding and trust, working together towards the development of the company and the enhancement of welfare, while concentrating all our efforts on stabilizing and expanding our management foundation.