E
SECTION E — FIXED CONSTRUCTIONS
  
BUILDING
 E01
CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
 E01G
DESIGN OF TUNNELS OR GALLERIES; CONSTRUCTING TUNNELS OR GALLERIES BY MEANS NOT INVOLVING BORING OPERATIONS (constructing tunnels or galleries involving boring operations E21D; safety devices, transport, filling-up, rescue, ventilation or drainage in or of tunnels E21F)
 E01G 1/00
Design or layout of tunnels or galleries (conduits E02B 9/06)
 E01G 3/00
( transferred to E01G 4/00, E21D )
 E01G 4/00
Constructing tunnels or galleries by means not involving boring operations  [2]
 E01G 4/02
·  by building in open excavations (making excavations or subsequently filling-in E02D)  [2]
 E01G 4/04
·  by making use of prefabricated elements laid or sunk in water  [2]
 E01G 5/00
( transferred to E21D )
 E01G 7/00
( transferred to E21F )