Waterview Connection Information Sheet

FREEPHONE 0508 TUNNEL(886635) www.nzta.govt.nz/waterviewconnection

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TBM TUNNEL:• Total length (not including Northern Access

Trench, Southern Access Trench & Cross Passages) TBM bored tunnel length: 4,830m

• NB – tunnel: 2,428m• SB – tunnel: 2,402m• Number of cross passages: 17• 16 TBM tunnel to TBM tunnel (XP02 to XP17)• 1 SAT Cut and Cover (XP01)

SEGMENTS:• Inside diameter of ring: 13,100mm• Total number of permanent rings: 2,415• Number of segments per ring: 9 + 1• Width: 2,000mm• Length (max): 4,700mm• Thickness: 450mm• Weight per ring (appr.): 93.4tonnes (SFRC)• Taper: 30mm (single taper)• Ring type: Left + Right hand rings

SEGMENT PRODUCTION:• Number of segment moulds: 3 sets• Concrete strength: 55MPa• Reinforcement: 35kg/m3 Dramix steel fibre• Fire protection: 1.0Kg/m3 Duomix M6 pp Fibre

TBM:• S-764 Herrenknecht TBM• Cost: NZD58million• Diameter of cutterhead: 14,430mm• Cutting diameter (new disc): 14,460mm• Excavated face area (new discs): 164.0m2

• Number of cutting discs: 16• Number of ripper tools: 69• Total length of main-shield TBM: 11,600mm• Total length of TBM and backup trailers: 95m• Total weight: 3,600 tonnes• Expected average production (per week):

90.0m

GROUT:• Bi-Component Grout – Cement Bentonite Mix • Sodium Silicate Accelerator• Ring annulus: 230mm• Volume of grout per ring (norm): 21m3

NORTHBOUND TUNNEL

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Ö SOUTHBOUND TUNNEL

NAT northern access trench

SAT southern access trench

TBM ALICE – S764

ABOUT THE TUNNEL