Applications

Moorings & Marine

Screwpiles are ideally suited to marine environments where installation is conducted from land for shoreline and short jetty applications, barges for extended piling works and underwater hydraulic systems utilising divers and specialised marinised equipment for mooring and sub-seabed anchoring points.

Corrosion issues are addressed much like every other steel section used in these conditions. Consideration is given to the expected environmental conditions.

  1. Permanently above or underwater
  2. Part or all of the pile or anchor is within a splash or tidal zone
  3. Salt or freshwater enviroment
  4. Structure and piling foundation design life
  5. Maintanance requirements

Naturally, the most corrosive environment is where a pile is subjected to salt spray splash zones or tidal exposure levels. The combination of salts and oxygen on steel require a quality corrosion protection such as two-pac urethane or tar epoxy coatings or tar tape protection such as Denso Wrap. For other environments it is likely that heavy duty hot-dip galvanising may be sufficient protection. In some instances a combination of the two may be appropriate.

Marine applications include:

  • Jetty soldier piles
  • Floating and fixed marina platform piles
  • Embankment abutments
  • Seabed ground tension anchors
  • Moorings

Note: Screwpiles are not suited where the piles are required to found into limestone unless there is sufficient overburden marine bed strength to accommodate the lateral design loads for the piles.