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Drop cover type U-shaped drainage ditch according to JISA5372 Appendix E recommended specifications E-2.
Type 1 is primarily installed on sidewalks. Type 3 is rarely adjacent to vehicles, and even when it does occur, it is installed parallel to the roadway in places where vehicles travel at low speeds, such as during temporary stops.
L-shaped drainage ditch according to JISA5372 Appendix E recommended specification E-4 and JISA5371 Appendix C recommended specification C-1.
■L-shaped drainage channel JISA5372 - Mainly used for mount-up types below 100mm. ■L-shaped drainage channel JISA5371 - It is rare for vehicles to run adjacent to each other, and even when they do, it is in places where they run at low speeds, such as during temporary stops, and is installed parallel to the roadway.
