building the foundations of australia - piling · pdf filebuilding the foundations of...

Building the Foundations of Australia www.pilingcontractors.com.au

Piling Contractors are proud of our reputation as one of Australia’s premier specialist engineering companies. We have an impressive track record for providing outstanding results on all types of heavy engineering, resources, mining and infrastructure projects as well as utilities, commercial building and marine projects throughout Australia.

We work for a wide range of clients including EPC/M Contractors, Main Contractors, Government entities and Developers. We specialise in offering design and construction solutions, as well as value engineering, Alliancing, partnering and construct only services.

Our foundation and ground improvement range is comprehensive, including driven steel tubes, sheets and prestressed concrete piles, temporary and permanent cased bored piles with or without fluid support, segmentally cased bored and CFA piles, displacement columns, diaphragm walls, slurry walls, secant, contiguous, or soldier pile walls, falsework, marine piling and mine void filling.

Some of these techniques are shown on the following pages.

Building the Foundations of Australia

CFA piling for rail line at coal export terminal, NSW

Driven steel piles from barge, NSW

Our capability in bored pile construction covers piles from 400mm to 6000mm diameter to depths in excess of 60m. We operate Australia’s largest fleet of Bauer Maschinen (BG) rotary track mounted drill rigs along with several Mait rotary drill rigs. We also have a variety of crane-mounted rigs and specialised short mast rigs. This equipment gives us the capability to drill vertical, under and over raked shafts.

Piling Contractors’ key capabilities in Bored Pile construction are:

• A wide range of drill rigs available (rotary, crane-mount, excavator mounted)• Reliable experienced personnel, plant and equipment to provide a quality product delivered ahead of programme• Knowledge in all areas of Australia gained over 30 years constructing bored piles• Economical and productive methods of drilling in all ground conditions, from soft soils to very high strength rock• Extensive stock of auxiliary equipment including drill tools, casings, cluster drills and core barrels to handle various drilling conditions and obstructions encountered• Localised plant and equipment support in capital cities around Australia


Bored Piles

Boring out raked steel tube piles, NSW

Cluster drilling of very high strength rock, NSW

Piling for new busway, QLD

2www.pilingcontractors.com.au Building the Foundations of Australia

Continuous Flight Auger (CFA) Piling is a fast, economical, low noise and vibration free piling technique which is suited to a wide variety of ground conditions.

CFA piles can be used for heavy foundations, secant, contiguous or soldier pile wall applications. CFA piles range from 450mm to 1200mm diameter and drill depths up to 30m are possible.

Good quality CFA pile construction requires an experienced team to ensure that ground conditions are fully understood and that concrete mix design, as well as reinforcement detailing, is appropriately specified.

Powerful rigs, assisted by computerised instrumentation are needed to ensure correct construction procedure. Piling Contractors has the experience and equipment to ensure high quality CFA pile construction.

CFA Piles / Displacement Columns

Concrete pumping for displacement

columns, QLD

Displacement columns, QLD

Low headroom CFA piling, NSW

Displacement Columns, often called “rigid inclusions”, work on a similar principle to CFA piles and offer an economical solution for road or railway embankments. The main difference from CFA construction is that the soil is displaced rather than replaced, and hence minimal spoil is produced during pile construction.

During the drilling process the ground is displaced laterally by a specially designed and patented auger. This compacts the soil, generally improving the skin friction of the pile.

Concrete placement and reinforcement cage installation are similar to CFA piles. Typical diameters are 360mm, 450mm and 520mm. Pile lengths up to 30m are possible.

3


Piling Contractors installs driven steel tubular piles up to 1500mm diameter, 50m single lengths and 1 in 3 rakes using a range of leaders, some fitted with GPS to provide good accuracy and position control.

We operate driven piling machines ranging from 60t up to 160t rigs such as the LRB-400 rigs with 45m long leaders that can install piles on 1 in 3 over-rakes and 1 in 3 under-rakes using up to 16t piling hammers.

We also drive piles with rope suspended hammers and flying leaders in which our 9t, 12t and 16t hammers are mounted.

The flying leader allows the hammer to work independent of the crane and hence can drive piles into locations a fixed leader cannot access.

Piling Contractors installs driven sheet piles up to 25m in length and weighing up to 5t. Sheet pile installation rigs including purpose built RG16, RG19 and LRB255 piling rigs with telescopic leaders allowing the piling rig to pitch and vibrate piles to refusal. We also use ICE 44-50 and PTC 120D vibrators for steel pile installation including H pile, UB and column sections.

Driven Steel and Driven Concrete Piles

Driven prestressed concrete piles, QLD

Driven steel tube piling, NSW


Piling Contractors has designed and fabricated over 500m of falsework systems to carry cranes and piling rigs up to 280t.

Using falsework to install permanent piles has the following advantages:

• Reduced disruption to port or river traffic • Minimises additional vessel movements for the structure’s construction • Provides the ability to operate independent of tides and sea states • Work on several fronts concurrently • Ease of access for following trades • Piling in difficult ground conditions is better suited to “land- based” plant operated off falsework • Short lead time to mobilise

We have recently developed a hydraulic operated rotating marine leader which can traverse in all directions on a grid arrangement and rotate 360 degrees to pick up any pile on any rake within a defined area. This leader was used on our 300t falsework for a recent Port Berth extension to install 50m long 900mm 1 in 3 raking piles on a 12 x 14m grid.

Piling Contractors operates a modular barge with attendant service boats allowing us to work in river or near shore. We install driven steel tubes, sheets and bored piles using these access means, hired barges or client provided access.

Marine Piling and FalseworkPiling for new bridge foundations from falsework, QLD

Marine leader on falsework, WA

Tubular and sheet piles for Port Berth Upgrade, WA

5

Driven steel piles for LNG project, Gladstone QLD


A retaining wall is a structure designed and constructed to retain and resist lateral pressure of soil when there is a desired change in ground elevation.

Piling Contractors constructs many types of retaining wall including concrete or steel piled walls and diaphragm walls. We also offer non structural slurry walls used to control migration of in ground liquids or gases.

Diaphragm walling is the in-situ construction of vertical walls by means of deep trench excavations. Stability of the excavation is maintained by the use of a bentonite or polymer mud which balances the external water pressures. Excavation is carried out by rope-suspended, mechanical or hydraulic grabs, or for hard rock excavation a hydraulic cutter is used.

Wall thicknesses range from 500mm to 1500mm and excavation depths of 50m or more are common. Construction joints include a waterstop providing a water retaining structure.

Bored, CFA and steel pile retaining walls are constructed using the techniques described on earlier pages.

Piling Contractors works with our clients to provide the most appropriate retaining solution to the project needs.

Key features of retaining walls are:

• Structural support for the construction of building basements• Stability to landslides and highway cuts• Can take any shape, including circular shafts• Constructed in areas where limitations may be imposed by noise, vibration, geology or groundwater • Can provide geometric precision at depth, vital for structural and hydraulic reasons• Installed through virtually all soil conditions and to considerable depths• Structural stiffness limits ground movement and adjacent settlement• Can be constructed in relatively low headroom and in areas of restricted access• Can carry very high vertical loading where required

Retaining Walls

Secant pile wall, QLD

Diaphragm wall, QLD

Contiguous pile wall, QLD


We embrace safety, quality, innovation and technical excellence as our foundation values.

Safety is our highest priority and it is why so many of the country’s leading contractors choose us as their preferred partner. Our Safety Management System is certified to AS4801.

Over more than 30 years, we have built our reputation on achieving outstanding quality in the products we deliver on land and over water. Quality accredited since 1997, we are now certified to ISO9001:2008. We constantly review and improve our internal systems and procedures to ensure our clients will receive best value for money.

Piling Contractors’ commitment to minimising our environmental impact is being realised as we strive to exceed industry standards. Environmental management plans are established and control measures implemented to minimise dust, noise and air pollution.

We are known as leading innovators in the industry and we demonstrate the depth of our experience through the delivery of important and technically challenging projects.

Technical excellence is not achieved by accident, it is part of our culture and the result of commitment across the organisation. Our in-house design teams use the best analysis techniques, latest data and knowledge from many years experience of a wide variety of soils, rock and construction methods to design and detail cost-effective solutions for our clients.

We offer a range of pile testing and analysis including vertical, lateral and bi-directional static tests, PDA, PIT and sonic logging.

We take a lead role in the technical activities of industry associations. Many of our engineering staff hold memberships of the major national or international professional institutions.

Our skills and expertise are offered to our clients in a collaborative and engaging approach to solving problems and providing solutions.

Piling Contractors is one of the largest Australian piling companies, undertaking projects in all States and Territories. Our plant maintenance facilities in Brisbane, Sydney and Perth provide prompt service to our comprehensive plant fleet anywhere we work.

Piling Contractors is a part of the Keller Group, the world’s largest independent specialist ground engineering contractor.

Our Key Attributes

7

Sheet pile retaining wall, NSW


[email protected]

Large shaft drilling, VIC

Remote location piling, WA

Mine void filling, QLD

Reliable Successful Dynamic

V3, 03/13

building the foundations of australia - piling · pdf filebuilding the foundations of...

Documents