NZTA - SH1 PUHOI TO WARKWORTH:
CN8A CULVERT CONSTRUCTION, EARTHWORKS, STREAM DIVERSION
CLIENT: NX2 - Northern Express Group Contractor
COMPLETED: 2019
With a depth from pavement to invert of 45mtrs deep, this is most likely the deepest culvert ever to be installed on a NZTA Roading project. This project involved the construction of a Triple Barrel 3x large diameter Stormwater culvert, consisting of 1x 2500 dia. pipe & 2x 2000 dia. pipes, at a 220m length across the main SH1 Motorway alignment.
The project had significant challenges, outlined below:
Highly sensitive Clean stream diversion works with full electro-fishing for relocation of fish eels and freshwater crayfish.
Cutting through a large Rock Bluff, Rock Stabilisation work, and Shear Key works.
Placing of flowable fill (approx. 3,300m3) as backfill to keep the culvert safe from high overburden loads.
One million m3 of fill placed on top of Culvert pipes, filled to 45m height above invert of pipe to top of road pavement alignment.
Due to the complex challenges, P&I provided the client with a detailed pre-construction methodology using 3D modelling. P&I’s use of 3D modelling at the planning phase helped to reach planning consensus for a one of the most challenging areas of the P2Wk project critical path, and ensured effective & efficient completion of the works at the actual construction phase.
The works were carried out with high level implementation of health & safety procedures, quality assurance and strict environmental awareness, with none of the approx 3,300m3 of flowable fill concrete reaching the diverted stream.
Precision prior planning was required due to difficult access and rough terrain. The extra time spent planning and 3D modelling meant that only minor methodology adjustments were made during construction, allowing execution to go as planned.
NZTA - SH1 PUHOI TO WARKWORTH:
CS6 STORMWATER CULVERT AND STRUCTURES
CLIENT: NX2 - Northern Express Group Contractor
COMPLETED: 2019
This project involved the construction of a Quad Barrel 4x large diameter Stormwater culvert, consisting of 3x 2000mm dia. HDPE pipes and 1x 2500mm dia. HDPE pipe.
Our work involved environment-sensitive works such as pouring 4,000m3 of flowable fill adjacent to a live stream without incident, and was lauded by the client. Constructing a low-flow channel and fish baffles for the safe movement of fish along the pipe. Also, undertaking clean stream channel and bypass pumping works.
The works were carried out with high level implementation of health & safety procedures, quality assurance. This project was complted during Winter and had strict environmental controls and awareness onsite, with none of the approx 4,000m3 of flowable fill concrete reaching the live stream.
Installing the final 2500mm dia PE Pipes with Relief Inlet.
Finsished product - 4x Inlet Struture with Debris fins and Relief Inlet Risers with Scruffy Domes installed.
NZTA - SH1 PUHOI TO WARKWORTH:
PROCUREMENT AND INSTALLATION OF N2F 11x 2400mm BARREL CULVERT
CLIENT: NX2 - Northern Express Group Contractor
COMPLETED: ONGOING
This project involved the construction of an unique 11x Barrel Culvert consisting of 11x 2400 dia. culvert pipes and 2x 40mtr Inlet & Outlet Wall Structures across the main new SH1 Motorway alignment.
This culverts main purpose is to drain stormwater away in a one in 100year flood from the low lying farm land areas, due to the SH1 motorway pavement alignment being raised along this section in Warkworth.
P&I developed a pre-construction methodology using 3D modelling to showcase the possible real-time scenarios at site during the construction phase. This model illustrated the clients the step-by-step activity of the process required to manage interactions with the clients concurrent activities along the project critical path.
The methodology also was designed to reduce H&S risks with the interactions between heavy earthmoving machinery and workers on the ground.
Scope of works:
Dewatering
Bulk Open earthworks.
Ground improvement works – Installing raft layers with PET1200 cloth.
Construction of 11x 2400 dia. Culvert Pipes x 42.5m across the main new SH1 Motorway alignment.
Construction of 40m long Wingwall Inlet & Outlet Structures. Installing multiple 14T precast concrete panels. Install steel. Pouring concrete blinding, footing, for 2x 40m long base slab installations.
NX2 N2F 11x Barrel Culvert - Placing of Outlet Pannels
NX2 N2F 11x Barrel Culvert - Start of Pipe Laying
NX2 N2F 11x Barrel Culvert - 3D Model
NZTA - SH1 PUHOI TO WARKWORTH:
UTILITIES AND DRAINAGE (SOUTH)
CLIENT: NX2 - Northern Express Group Contractor
COMPLETED: ONGOING
This project involves the installation of utility pipelines for stormwater drain, lighting, signals, CCTV, and communication lines along the SH1 motorway alignment.
We have been awarded with half of the P2Wk project’s 18km Longitudinal Drainage and ITS services, consisting of 9kms of stormwater drainage and 9kms of utility services along the pavement alignment.
REDHILLS WASTEWATER PROJECT - Pipelaying & Earthworks
CLIENT: Watercare - Pipeline & Civil
COMPLETED: 2020
NZTA - SH1 PUHOI TO WARKWORTH:
Multiple culvert CONSTRUCTION, EARTHWORKS, STREAM DIVERSION
CLIENT: NX2 - Northern Express Group Contractor
COMPLETED: ONGOING
We have undertaken multiple large dia Stormwater Culverts at key locations along the P2Wk SH1 motorway alignment. These mainly provide drainage for streams crossing the SH1 motorway alignment, collection of stormwater along the alignment and provide safe passage for the stormwater and aquatic life to mix with the nearest stream without disturbing the existing natural environment.
BULLOCK TRACK INTERSECTION UPGRADE
CLIENT: Auckland Transport
COMPLETED: 2017
CROWS ROAD PARK
CLIENT: Watercare
COMPLETED: 2017
NZTA SH20A TO AIRPORT MOTORWAY
CLIENT: Manukau Harbour Kirkbride Alliance (MHX)
YEAR: 2016 to 2017
SH20A is the primary route to and from Auckland Airport and forms a strategic link between the Western Ring Route (SH20 and SH16), the Airport Business District and the greater Auckland area.
To improve journey time reliability to the airport, and to improve safety at this intersection, a trench will be constructed under Kirkbride Road to separate motorway traffic from local traffic.
This grade separated intersection at the SH20A/Kirkbride Road intersection will allow motorway traffic to pass underneath Kirkbride Road to and from the airport more efficiently.
P&I's scope on this project was to install drainage & services and associated structures at various locations along the motorway project and assist with multiple aspects of motorway and local road widenings.
WOOLSTON TRUNK MAIN REPLACEMENT
CLIENT: Stronger Christchurch Infrastructure Rebuild Team (SCIRT) - Downers
COMPLETED: 2016
Replacement of existing DN700 trunk main, damaged during the Christchurch Earthquakes, and replace with DN700 GRP pipeline. Also replaced were the local submain and associated manhole structures along damaged section.
Excavation depths up to 5mtrs deep in poor ground conditions with high water table. Well point de-watering with multiple pumps was used to deal with high volume of ground water. Extensive wastewater bypass pumping was used to contend with existing flows while works were undertaken.
NORTHERN RELIEF TRUNK MAIN
CLIENT: Stronger Christchurch Infrastructure Rebuild Team (SCIRT) - Downers
COMPLETED: 2016
The Northern Relief Trunk Main conveys wastewater for approximately 70,000 people from the north and west of the Christchurch to the Christchurch City Council (CCC) Pump Station 1 on Woodham Road. The Northern Relief Trunk Main is considered a critical asset within the CCC wastewater network.
The existing main suffered significant damage during the Canterbury Earthquakes, particularly in the vicinity of the Avon River where there was evidence of liquefaction, settlement and lateral spread.
The existing alignment is largely through the Residential Red Zone and crosses beneath the Avon River via an inverted siphon.
The new alignment (installing 1400mm diameter GRP pipe) typically ran along Council owned carriageways (Retreat Road and Eveleyn Couzins Avenue) and across Council owned land currently occupied by Pump Station 8 and community buildings.
KILMORE ST - SOUTH CATCHMENT
CLIENT: Christchurch City Council (SCRIT)
YEAR: 2013
This section of work involved open trench replacement of 2km of earthquake damaged wastewater pipe inside the Christchurch Central Business District along Durham St, Hereford St, Montreal St, Cambridge Tce for the 'Stronger Christchurch Infrastructure Rebuild Team' (SCIRT) for Christchurch City Council.
This required excavating outside and renewing wastewater pipes to high profile building sites such as the Christchurch City Council Building, Christchurch Police Headquarters Building, Christchurch Arts Centre and the Christchurch Art Gallery all of which had survived the earthquakes.
The Christchurch Art Gallery building was used as the NZ Civil Defence headquarters for Christchurch following the 2010 and 2011 Christchurch earthquakes.
SH1 VICTORIA PARK TUNNEL
CLIENT: The Fletcher Construction Company
COMPLETED: 2011
BIRKDALE WASTEWATER UPGRADE - ESKDALE ROAD
CLIENT: Pipeworks - Watercare
COMPLETED: 2011
BIRKDALE WASTWATER UPGRADE - CASTLETON ST.
CLIENT: Pipeworks - Watercare
COMPLETED: 2011
http://www.pipeworks.co.nz/view_project.php?id=14
BIRKDALE WASTEWATER UPGRADE - RUGBY CLUB
CLIENT: Pipeworks - Watercare
COMPLETED: 2011
http://www.pipeworks.co.nz/view_project.php?id=14
HENDERSON PIPEBRIDGES
CLIENT: WATERCARE
COMPLETED: 2011
WHANGAPAROA RD. STORWATER UPGRADE
CLIENT: Rodney District Council
COMPLETED: 2010
ALBANY LAKE WASTEWATER UPGRADE
CLIENT: Pipeworks North Shore City Council
COMPLETED: 2009
SH1 NEWMARKET VIADUCT REPLACEMENT
CLIENT: Northern Gateway Alliance (NGA)
COMPLETED: 2009
SH1 NORTHERN GATEWAY TUNNEL PROJECT
CLIENT: Northern Gateway Alliance (NGA)
COMPLETED: 2009
GODLEY RD. - STORMWATER 360 UPGRADE
CLIENT: Waitakere City Council
COMPLETED: 2009
TAKANINI STORMWATER & SEWER UPGRADE
CLIENT: Brian Perry Civil -Watercare
COMPLETED: 2008
http://www.brianperrycivil.co.nz/view_project_temp.php?id=53&parentservice=Pipelines
FLEET ST. STORMWATER UPGRADE
CLIENT: Metrowater
COMPLETED: 2005
WELLESLY ST. STORMWATER BRICK BARREL RELINING
CLIENT: Metrowater
COMPLETED: 1999
COMMERCE ST. TWIN 2050mm STORMWATER PIPELINE
CLIENT: Auckland City Council
COMPLETED: 1999
