Road retaining walls that achieve quality stability and shortened construction periods.
Precast concrete products are essential for construction projects, as they ensure stable quality and shorten construction periods. For more details, please contact us or download the catalog.
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**Features** ○ Design conditions ○ Surface load on the ground Q = 10.0 kN/m² ○ Unit weight of soil Ws = 19.0 kN/m³ ○ Internal friction angle of soil φ = 30° ○ Wall friction angle of soil (soil to soil) δ = 0° ○ Wall friction angle of soil (soil to concrete) δ = 2/3 φ = 20° ○ Cohesion of soil C = 0.0 kN/m² ○ Friction coefficient between foundation ground and retaining wall base μ = tan φ = 0.577 ○ Unit weight of concrete Wc = 24.5 kN/m³ ○ Design standard strength of concrete σck = 30 N/mm² ○ Allowable bending compressive stress of concrete σca = 10 N/mm² ○ Allowable shear stress of concrete τa = 0.45 N/mm² ○ Allowable tensile stress of rebar (SD295A) σsa = 160 N/mm² ○ Soil pressure calculation using trial wedge method (according to road earthworks and retaining wall construction guidelines) ○ Safety factor for sliding Fs > 1.5 for overturning, the point of action of the resultant force is within the central 1/3 of the base width B ● For more details, please contact us or download the catalog.
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Company information
Since our establishment in 1930, we have been dedicated to producing various concrete products, starting with thick slate. In 1958, we began the production of ready-mixed concrete and concrete secondary products with the establishment of the Nagakute factory. We have also obtained JIS factory certification and have worked to improve quality control and enhance production facilities to meet the needs of our customers and the demands of the times.