C6: Mt Eden stormwater realignment works CLG meeting – 31st of January, 2018
CRL C6 project
•
•
•
•
•
Bought by Vinci SA at the end of 2017
Infrastructure but concentrate on in ground
Christchurch based but NZ focused
March Family
Founded 1971
March Construction C6 PROJECT
•
Vinci SA is a French organisation which is one of the largest construction companies in the world
•
•
•
•
>30 TBMs from 0.5mØ – 5.5mØ
140km of tunnels in last 10 years
MTBM manufacturer as well as installer
Over 40 years in business
France based (Saint-Jory, near Toulouse)
Bessac
•
•
•
•
All tunnelling works completed from Water Street
Tunnelling method involves the use of an AVN 2000 AB MTBM
Less time taken for construction of the tunnel
Single drive from Water St to Nikau St
The Tunnel
•
The Shafts Water St (the Drive Shaft) 16m deep secant pile construction • 8.5m internal diameter • 0.75m piles bored with a Soilmec SR40 drill rig (50 tonne) • 50-80 tonne crawler crane Mt Eden Rd 18m deep access chamber • 2.5m internal diameter • Casing installed by Liebherr LRB155 (70 tonne) drill rig • 50-80 tonne crawler crane Nikau St (the receiving shaft) 15m deep shaft • 9.4m internal diameter stepped down to 5.6mØ • Pre cast concrete caissons • 50-80 tonne crawler crane • 30-35 ton excavator with rock breaker
•
•
Works will then be continuous from this period through until January 2019 at Water St and Nikau St. Mt Eden Rd will be to some extent dependent on tunnelling progress.
First site works – Mid February at Water St with hoardings going up followed by Mt Eden Rd and Nikau St
Timing/Programme
•
GPTs: GPT1 (Boston Rd-late February) GPT2 (Boston Rd-Mid March) GPT3 (Normanby Rd-Early April) Completion will be early May with each GPT taking about four weeks.
• • • •
•
•
Noise: • Rock breaking at Nikau St • Generators at Water St • General construction activity
Hours of Work: • 7.00am to 7.00pm • 24 hours for MTBM
Impacts
•
Traffic: • Site establishment of plant • Truck movements
•
•
•
•
Martin Hughes on 027 3846576
Contacts: Graeme Inglis on 027 4557299 or the 0800 CRLTALK (2758255)
The MBJV will at all times keep communication open
March and Bessac have good reputations when it comes to working with communities
The work sites are quite contained with activities restricted to within the boundaries apart from truck movements.
Summary
•