Testing of open section drilled C-pile and CT-pile wall

Liisa Larkela, Jouko Lehtonen, Leena Korkiala-Tanttu

Research output: Contribution to journalArticleScientificpeer-review

1 Citation (Scopus)


Micropile developments have greatly advanced over the last two decades and new kinds of piles have been created to meet different challenges in foundation works. This paper describes an open section steel C-pile. A C-pile can be used for lightly loaded foundations to reduce cost and improve environmental efficiency. This C-pile has been developed further for use as a vertical drilled ‘sheet pile wall’. In this application, a T-profile is welded to a single C-pile. This combined profile allows the piles to be connected to each other and to form a wall – a CT-pile wall. When cement grouting is used to infill the hollow sections, a moderately watertight structure with higher stiffness is created. This paper presents the results of an installation test conducted on a CT-pile wall. The results from the test showed that the CT-pile wall performed well, and the deformations in the wall and behind the wall were at an acceptable level. The CT-pile wall is similar to a moderately light sheet pile wall and is expected to provide relatively good watertightness.
Original languageEnglish
Article number1500029
Pages (from-to)129-136
Number of pages8
Issue number2
Early online date2016
Publication statusPublished - 8 Mar 2017
MoE publication typeA1 Journal article-refereed


  • Drilling & drillholes
  • Piles & piling
  • Retaining walls

Fingerprint Dive into the research topics of 'Testing of open section drilled C-pile and CT-pile wall'. Together they form a unique fingerprint.

Cite this