Drawing of a generic screwpiling solution for domestic housing footing next to a sewer
Select file format:Drawing of a generic screwpiling underpinning solution for slab down housing footing next to a sewer
Select file format:As home sites become smaller and underground services infrastructure becomes more congested protection of these services becomes more of an issue. Structures within easement proximity require special consideration.
During the buildings design, survey and licencing phase location and identification of underground services needs to confirmed. As defined by the relevant Services Authority any structure, or part thereof, that extends into an aloted easement's "zone of influence" must have its foundation system loads transferred to below a specified "line of influence" to ensure any future underground maintenance work does not compromise the structure or affect the service itself.


Screwpile Australia supplies a range of "off the shelf" sewer screwpiles for domestic housing applications in accordance with a standardised foundation design concept that it has developed with local housing engineers over the years. The connection interface between the screwpile and concrete footing is standardised with specified shear bar sizes to transfer design loads into the piles.
The same range of screwpiles can be used in situations where easements exist due to exposed drains and sumps. This along with Screwpile Australia's computerised scheduling department provide builders with the most time efficient piling works ordering system available.
Larger buildings and structures within easements require individual engineering consideration. Design loads are likely to be considerable and minimum pile depths will be increased. Interface connection will be in accordance with the pile design loads. These screwpiles are all special order manufacture.
For a guide on a typical interface conncetion visit the engineering section of this site. For all large structures purpose-designed sewer screwpiles are designed and manufactured to order.
As with all our screwpiles design life is in accordance with the building's design life so you can be assured that the screwpiles will last as long as your building. Check with your design engineer as to the design life of your building.

