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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=300x300mm. (external wxh=425/443x400mm). Double galvanized steel angle profiles. 0.75m 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 677cm2/m. Weight 728kg.
