| E | Sektion E — Bauwesen; Erdbohren; Bergbau | FIXED CONSTRUCTIONS | |
 | E03 | Wasserversorgung; Kanalisation | WATER SUPPLY; SEWERAGE |
| E03F | Abwasserkanäle; Abwassergruben | SEWERS; CESSPOOLS |
 | E03F 3/00 | Kanalisationsnetze [1, 2006.01] | Sewer pipe-line systems [1, 2006.01] |