Meet the TTT MultiPole – an incredibly versatile pole due to its’ unique hollow core. TTT MultiPole was developed in conjunction with Structural Engineer Mark Batchelar of mlb Consulting Engineers. TTT MultiPoles can be manufactured from TTTSED Poles, Uglies, or UniLog.

Most of the heartwood core is removed via a special process developed by TTT Products – a first for NZ and possibly the world! This leaves a centre hole that runs the full length of the pole. Removing only the heartwood does not weaken the strength of the TTT MultiPole as the strength is retained in the outer sapwood layers. The heartwood removal results in greatly reduced pole checking and splitting as the pole dries out. Further processing or preservative treatment is then carried out. Full penetration of the preservative can be achieved as the preservative is able to be impregnated from both the internal and external faces.

TTT MultiPoles are lighter (compared with solid timber poles or steel or concrete products) which means they are easily transported and handled on site. The hollow core also allows for installation via high-frequency vibration which makes for easier installation particularly in difficult ground conditions.

The hollow core of a TTT MultiPole can be used for the insertion of cabling/ducting and services, or reinforcing bars (either pre-tensioned or grouted). It also means separate TTT MultiPole sections can be joined with our proprietary TTT MultiPole Connectors. This makes TTT MultiPoles incredibly versatile and a great solution for foundations and above-ground structures.

As a response to the geotechnical and structural problems encountered after the Christchurch earthquakes foundation systems using TTT MultiPoles were developed by NZ Ground Control Limited. The foundation systems provide a variety of solutions for difficult ground conditions, in particular TC2 and TC3 land in Canterbury, but also suitable for most sites throughout New Zealand and overseas. Refer to for more information on foundation systems using TTT MultiPoles.

MultiPole Image of Pole with Hole
Unilog Mulitpole Cut Posts
TTT Products Fluid

Use TTT MultiPoles specifically for:

  • Foundations – See
  • Ground Improvement
  • Construction & Retaining Walls
  • Insertion of cabling/ducting and services, or reinforcing bars
  • Installation via Pile Driving, Drilling & Concreting, or Vibration. An authorised installer may be recommended for particular sites.

TTT Quick Info

  • Radiata Pine
  • TTT SED Poles, UniLog, TTT Uglies
  • Diameter range: 160mm to 500mm SED
  • Length range: 1.8m to 18m long
  • Hollow core generally 1/3 of the pole diameter
  • Minimum hollow core diameter – 50mm
  • Maximum hollow core diameter – 146mm
  • TTT MultiPole Connector (thin or thick walled) – for joining MultiPole sections
  • H5 Hazard Class, CCA
  • TTTested - proof-tested poles (see TTTested Poles page)
  • Manufactured to order

    • TTT Poles Brochure

    • PDF | 2.53mb | Download

    • TTT MultiPole Brochure

    • PDF | 1.80mb | Download

    • Structural components using TTT MultiPoles

    • PDF | 416kb | Download

    • TTT MultiPole Connector Guideline MP001

    • PDF | 536kb | Download

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