Super wide box with angled support
■ The "Oblique Super Wide Box" is applicable to ultra-large cross-sections ranging from 10.0m to 13.0m in width. ■ The oblique angle can be freely set within the range of 75° to 90°. ■ By setting the oblique angle to match intersecting rivers or roads, it enables a highly flexible design that promotes effective land use. ■ It is also compatible with other forms such as portal culverts. ■ To accommodate faster construction, it is also possible to use precast elements for the bottom slab.
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【Design Conditions】 Soil Cover: 0.2m to 2.0m Dead Load Unit Volume Mass of Reinforced Concrete: 24.5 kN/m³ Unit Volume Mass of Soil: 18.0 kN/m³ Unit Volume Mass 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 ground or better. Allowable Tensile Stress for Reinforcement: 180 N/mm² Side Wall Joint Method: Joint using 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 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.
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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 and foster a free and open corporate culture through talent development and fair personnel practices. 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.
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