IPC 2013 : E02D 19/08 : by employing open ditches arranged below the level of the water.

IPC2013 > E > E02 > E02D > E02D 19/00 > E02D 19/08[2] > by employing open ditches arranged below the level of the water.
Notes[t] E01 - E06: BUILDING
E SECTION E — FIXED CONSTRUCTIONS.
E02 HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL-SHIFTING.
E02D FOUNDATIONS; EXCAVATIONS; EMBANKMENTS (specially adapted for hydraulic engineering E02B ); UNDERGROUND OR UNDERWATER STRUCTURES.
E02D 19/00 Keeping dry foundation sites or other areas in the ground (sheet piles or bulkheads E02D 5/02).
E02D 19/08 · · by employing open ditches arranged below the level of the water.