C6: Mt Eden stormwater realignment works CLG meeting – 31st of January, 2018
CRL C6 project
March Construction C6 PROJECT •
Founded 1971
•
March Family
•
Christchurch based but NZ focused
•
Infrastructure but concentrate on in ground
•
Bought by Vinci SA at the end of 2017
•
Vinci SA is a French organisation which is one of the largest construction companies in the world
Bessac •
France based (Saint-Jory, near Toulouse)
•
Over 40 years in business
•
MTBM manufacturer as well as installer
•
140km of tunnels in last 10 years
•
>30 TBMs from 0.5mØ – 5.5mØ
The Tunnel
•
Single drive from Water St to Nikau St
•
Less time taken for construction of the tunnel
•
Tunnelling method involves the use of an AVN 2000 AB MTBM
•
All tunnelling works completed from Water Street
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
Timing/Programme •
First site works – Mid February at Water St with hoardings going up followed by Mt Eden Rd and Nikau St
•
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.
•
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.
• • • •
Impacts •
Hours of Work: • 7.00am to 7.00pm • 24 hours for MTBM
•
Noise: • Rock breaking at Nikau St • Generators at Water St • General construction activity
•
Traffic: • Site establishment of plant • Truck movements
Summary •
The work sites are quite contained with activities restricted to within the boundaries apart from truck movements.
•
March and Bessac have good reputations when it comes to working with communities
•
The MBJV will at all times keep communication open
•
Contacts: Graeme Inglis on 027 4557299 or the 0800 CRLTALK (2758255)
•
Martin Hughes on 027 3846576