Services

Basement Construction Specialist Piling ServicesBasement Construction Services provides specialised piling services, including the design and construction or construct only, of concrete piles and piled retention systems, as well as offering associated basement construction services.

Piling

Basement Constructions Services’ specialist piling equipment is designed to offer both CFA and bored pile installation for use as piled foundations or piled retention systems.  Our equipment is compact and able to install piles close to the site boundary without disturbing neighbouring properties, which enables maximum site utilisation even when the site is narrow or difficult to access.

Our specialised piling equipment and experienced team are able to guarantee piles are installed within positional tolerances specified in AS2159.

Basement Construction Specialist Piling Services - Services CFA

CFA – Continuous Flight Auger

The CFA pile installation methodology involves drilling the pile to depth and then injecting concrete under pressure through the hollow flight auger to the base of the pile as the auger is being withdrawn from the hole. The steel reinforcement is then placed into the concrete filled pile.

The CFA pile installation methodology involves drilling the pile to depth and then injecting concrete under pressure through the hollow flight auger to the base of the pile as the auger is being withdrawn from the hole. The steel reinforcement is then placed into the concrete filled pile.

Bored piles

If concrete injected piles are not required, bored piles are offered. Bored pile holes are drilled and reinforcing is placed into holes prior to placing concrete into pile holes.

Piled Retention Systems

Basement Construction Specialist Piling Services - Piled Retention Systems

Basement Construction Services has the capabilities, experience and equipment to construct a range of Piled Retention Systems: Contiguous Pile Walls; Soldier Pile Walls; Secant Pile Walls and Diaphragm Walls.

Earth retention piles offer protection of neighbouring assets and workers during construction. A piled retention system provides superior site safety as shoring is fully installed prior to excavation. In addition, retention piles can act as an integrated foundation and earth retention structural element. Utilising the retention piles as foundations can reduce the project’s overall critical path timeframe and project costs. Piled retention systems can assist in maximising site utilisation by installing a piled retention system and subsequently building the basement wall close to the property boundary without impacting on neighbouring properties or buildings.

Contiguous pile walls

A Contiguous Pile Wall is one which is constructed using piles spaced very close to one another in a line, to form a retaining wall. Where the ground conditions require a contiguous pile wall to be constructed the piles are usually required to be installed using CFA pile installation methodology. A shotcrete finish can be sprayed over the contiguous pile wall.

Basement Construction Specialist Piling Services - Contiguous Pile Wall

Soldier pile walls

Basement Construction Specialist Piling Services - Soldier Pile Walls

Soldier Piles are installed as either CFA or bored piles. Once the Soldier Piles are installed, the retention system construction can be completed with shotcrete over the face of the piles, sprayed concrete infill panels or timber sleepers.

Secant pile walls

Secant pile walls are constructed by installing interlocking piles. Piles are installed in an alternating sequence of “primary” – non-reinforced piles, and “secondary” reinforced piles. The primary piles are installed, then when sufficient strength is obtained, the secondary piles are installed between them, with an interlock (or secant) cut into the secondary piles.  Secant pile walls are used when the ground conditions are sandy/unstable or when there is a high water table.

Diaphragm walls

Basement Construction Specialist Piling Services - Diaphragm walls

BCS’s hydraulic diaphragm wall grab is capable of constructing 300mm wide diaphragm walls to 15m depth.

Design and Construct services

Basement Construction Specialist Piling Services - Design & Construct services

Basement Construction Services’ has in-house engineers with extensive experience in structural and geotechnical design, specialising in foundation and retention system design.  This experience and expertise enables BCS to design and certify cost-effective alternative retention system solutions for our clients.

Basement Construction – Associated Services

Basement Construction Specialist Piling Services - Associated Services

Basement Construction Services offers more than the design and construction of piles and piled retention systems. BCS also offers the following additional services:

  • Associated Concrete Works including Shotcrete Walls and Capping Beams
  • Installation of Temporary Propping, Permanent Propping and Ground Anchors
  • Bulk and Detailed Excavation
  • Installation of Waterproofing Blanket
  • Static Pile Testing: In-house Static Pile tests to verity pile capacity and vertical displacement under load.