| Symbol | Typ | Titel |
|---|---|---|
| E | SK | FIXED CONSTRUCTIONS |
| E02 | KL | HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL-SHIFTING |
| E02B | UKL | HYDRAULIC ENGINEERING (ship-lifting E02C; dredging E02F) |
| E02C | UKL | SHIP-LIFTING DEVICES OR MECHANISMS |
| E02D | UKL | FOUNDATIONS; EXCAVATIONS; EMBANKMENTS (specially adapted for hydraulic engineering E02B); UNDERGROUND OR UNDERWATER STRUCTURES [6] |
| E02F | UKL | DREDGING; SOIL-SHIFTING (winning peat E21C 49/00) |