B 294 OU Winches - Section II - Overwinds

Brandberg tunnel with trough construction

Essential services:

Trough structure l = 86 m

Tunnel in open construction 116 m

Tunnel in bergm. Construction 765 m

2 rescue lenghts l = 178 m or 103 m

under Central

Overcut bored pile wall 2 915 m 2

Sheet pile wall 2 150 m 2

Anchored underwater concrete sole 1 700 m 2

Grout anchor 5 240 m

Tunnel and tunnel excavation 87 700 m 3

Excavation 35 200 m 3

Shotcrete 6 500 m 3

Reinforced concrete 24 700 m 3

Reinforcing steel 3 500 t

Sealing with KDB 27 000 m 2