This is a concrete product whose safety has been confirmed through static load testing with actual objects.
The Preguard II (PG Foundation) is a concrete product with a cross-section shaped like an inverted T and a length of 2 meters. This product is designed to function as a unified protective fence foundation by connecting 4 to 10 units in the direction of road extension (longitudinally). The friction resistance generated on the bottom surface of the product is treated as a discrete-type spring, and the bending moments and shear forces are calculated as a beam on a finite-length elastic floor, ensuring through stress calculations that the product does not experience bending or shear failure. 【Features】 ○ Excellent workability and environmental compatibility ○ Lightweight, allowing for construction with small machinery ○ Superior economic efficiency and safety ○ Performance verified through static full-scale experiments ○ NETIS registration NO. SK-060003-V For more details, please contact us or download the catalog.
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basic information
【Design Conditions】 ○Impact Load →[A] Impact Load P=50kN, Impact Height Hp=0.600m →[B.C] Impact Load P=30kN, Impact Height Hp=0.600m ○Support Ground →Friction Coefficient μ=0.6 →Ultimate Bearing Capacity qd=300kN/m² ○Concrete →Unit Weight γc=24.5kN/m² →Design Standard Strength σck=30N/mm² →Allowable Bending Compression Stress σca=15N/mm² →Allowable Shear Stress Tca=0.675N/mm² →Allowable Punching Shear Stress Tpa=1.0N/mm² ○Backfill Soil →Unit Weight γ=20kN/mm³ →Shear Resistance Angle φ35° ○Reinforcement →Material SD295A →Yield Strength σsy=295N/mm² →Allowable Tensile Stress σsa=270N/mm² ○Connecting Bolt →Material Equivalent to SS400 M20 →Yield Strength σsy=235N/mm² →Allowable Tensile Stress σsa=210N/mm² →Allowable Shear Stress Tsa=σsa/√3=121N/mm² ●For more details, please contact us or download the catalog.
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Company information
Mizutaki Concrete Industry Co., Ltd. is based in Tateyama City and Minami Boso City on the Boso Peninsula, boasting over 65 years of tradition and achievements in rich natural surroundings, and providing products that you can use with confidence. We manufacture and sell a variety of concrete products, including gutters, waterways, retaining walls, blocks, and catch basins. Our company is a factory certified for product quality and management conditions through the certification inspection conducted by the Technical Committee of the Chiba Prefecture Concrete Products Cooperative. Under the Chiba Prefecture Concrete Products Cooperative, we are engaged in the production of products using eco-cement (JIS R 5214) made primarily from urban waste incineration ash.