• Sewer Screwpiles (easements)

• Building Settlement Problems

• Underpinning

• Soil Retention & Shoring

• Modular Buildings

• Soil Stabilisation

• Simple Screwpile Solutions

• Problem Sites

• Swimming Pool and Cellar Excavations

• Generic Sewer Screwpile Detail

  Drawing of a generic screwpiling solution for single level domestic housing footing next to a sewer

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• Water Corp Building Applications Guide Brochure

  Water Corp Building Applications Guideline Brochure

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• Water Corp BuilderNet Form

  Water Corp BuilderNet Form

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Residential

Sewer Screwpiles (easements)

As building sites get smaller and underground services infrastructure becomes more congested, demand for the protection of these services for future maintenance  access increases.  Structures in close proximity to these services require special regulatory consideration.  During the building design and licencing phase, the identification of these services must be made to ensure the new building does not impact on these services.

Statutory Authorities charged with the management of underground services generally impose construction easements around the services.  Typically,  any structure that extends into an easement's "zone of influence" must have its foundation system transfer the building's loads to below the predetermined "line of influence ". Screwpiles are now the prefered method of transferring those loads. This combined with consideration to the immediate soil conditions allows authorities to excavate a service without fear of damaging the immediate structure.

A structural engineer needs to design a piling foundation solution and drawings need to submitted to the relevent authority for approval prior to construction. Failure to do so may result in you having to do expensive underpinning work in the future, should authorities ever find out approval or piling was not undertaken.

Prior to us introducing screwpiles to the building industry, it was common practice to construct bored piles by augering holes and placing concrete. Most engineers, builders and grano-workers now prefer to install screwpiles over conventional methods as problems associated with high water tables, hole caverning & collapsing ,causing delays and additional expense are all eliminated

Screwpile Australia works closely with regulatory authorities such as the WaterCorp to ensure their assets and your building are adequately protected in the event future maintenance excavation is required.

Note: Even though a building has been piled, appropriate box shoring at excavations is required to ensure no soil slip occurs below the structure.

 

No Surcharge No Screwpiles Needed

Allowing Safe Services Excavation

Sewer Surcharged by Building Loads

Services Excavation is Dangerous

Using Screwpiles Remove Surcharge Loads