IPC 2013 : E02D 19/04 : by coffer-dams.

IPC2013 > E > E02 > E02D > E02D 19/00 > E02D 19/04[2] > by coffer-dams.
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 19/04 · · by coffer-dams.