IPC 2013 : E02D 23/04 : Pneumatic caissons.

IPC2013 > E > E02 > E02D > E02D 23/00 > E02D 23/04[1] > Pneumatic caissons.
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 23/00 Caissons; Construction or placing of caissons (tunnels submerged into or built in open water E02D 29/063).
E02D 23/04 · Pneumatic caissons.