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Self-supporting drainage channel Type I according to EN1433. Resistant to frost, thaw, salt, oil and petrol etc. Self-compacting concrete C 55/67. Manning Stickler roughness coefficient of 95. Internal dimensions wxh=200x400mm. (external wxh=325/345x480mm). Double galvanized steel angle profiles. 0.75 m gratings fixed to the channel with dynamometric keys. Grating bolted 4 times. Subtle flow in the drainage channel for better hydraulic cleaning and accelerated flow. Traffic class F, 900KN. The drainage channel has a hydraulic section of 710 cm2/m. Weight 656kg.
