Concrete Profiles
Structural Concrete Rehabilitation Works.
Pacific Highway Upgrade, Karuah to Buladelah.
Concrete Construction – Rail Line for Blasting
Chamber.
Concrete Profile 1:
- Project:
- Structural Concrete Rehabilitation Works.
- Client:
- Newcastle Hunter Water Corporation.
- Duration:
- 8 weeks.
Description:
Specialist Site Services was engaged to carry out
structural rehabilitation of the Winding Creek stormwater
channel. Years of erosion had caused Channel walls to move
inwards.This created the possibility of damage to the surrounding
properties. Hunter Water Corporation required stabilisation
of channel walls and some floor panels. Access restrictions
created difficulties for normal sized concrete trucks. All
concrete was delivered in mini-mix trucks at 1.4m3 per delivery.
Wet weather posed a continual problem with the stormwater
levels rising very quickly as water was channeled from many
branch channels.
The construction specification called for
the excavation and removal of tree stumps, damaged channel
walls, supply, placement and finishing of steel reinforced
concrete footings and channel walls. The entire construction
project required galvinised steel reinforcement and concrete
footings for over 1km. The entire project was completed within
the specified timeframe to the satisfaction of the client.
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Spraying SFRS from a boom lift to seal
up areas of instability. This was carried out prior
to allowing the access of workers. |
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Cut and Cover section at western portal
to Cross City Tunnel. Ironstone seam required 3mtr CT
bolts and mesh prior to SFRS. |
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Concrete Profile 2:
- Project:
- Pacific Highway Upgrade, Karuah to Buladelah.
- Client:
- Baulderstone Hornibrook.
- Duration:
- 3 Months.
Description:
Specialist Site Services were awarded the contract to construct
culverts along a 10 kms section of the Pacific Highway, north
of Karuah. A total of 9 culverts were constructed for the
highway upgrade. Specialist Site Services supplied the erection
of all formwork and steel fixing as well as the placement/finish
of concrete. All culvert excavation was carried out by sub-contractors
prior to the laying of mud mats. All formwork used was marine
ply shutters with all culverts requiring dowel joints and
double layers of steel.
All concrete was batched at Boral’s
Seaham Quarry some 40 minutes away from the construction site.
All concrete deliveries were tested on-site to ensure that
the strict specifications and concrete quality was adhered
too. All formwork, steel fixing and concrete placement inspection
and testing was carried out by Hyder Consulting and the Roads
& Traffic Authority (RTA).
All works were interrupted by wet weather
which required the removal of large volumes of water and mud
from culvert areas ready for pouring. All formwork and steel
reinforcing required washing down prior to any construction
proceeding.
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Galvanised F82 sheets were lifted into
place with a rough terrain crane. All individual panels
required double mesh tied to dowels. |
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All drilling, steel fixing and shotcrete
was carried out from a man basket. A wood float finish
was then applied to the wall surface. |
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Concrete Profile 3:
- Project:
- Concrete Construction – Rail Line for Blasting Chamber.
- Client:
- Client Alstom Power.
- Duration:
- 3 Weeks.
Description:
Alstom Power approached Specialist Site Services
to carry out rockface stabilisation at their Telarah facility
in the Hunter Valley. Upon completion of the work we were
then asked to provide a price to construct a 50 metre concrete
rail line. This rail line is to be used for moving large pieces
of equipment from the main work site to the blast chamber.
The acceptance of our price and program meant
that Specialist Site Services could begin demolition of existing
rail line and concrete. A road saw was used to cut through
the 600mm slab prior to removal with excavator/hammer. The
work area was screened off to enable the client to continue
working within the facility. All formwork, steel fixing and
concrete was carried out by Specialist Site Services. The
rail was poured in 3 sections at 600mm think by 5 metres wide.
The rail sections were fitted by Alstom prior to Specialist
Site Services grouting the entire rail section. The work was
completed well within the program and to the clients satisfaction.
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Placing blinding layer for rail section
of blast chamber project. |
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Freshly placed concrete for rail section
of blast chamer project. |
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