Cold formed steel sheet piles

Efficient Solutions in Cold Formed Steel Sheet Piles

Cold formed steel sheet piles have been used for decades in permanent and temporary structures, like waterfront structures, dykes, river embankments and cofferdams. 

Main applications are small retaining walls, temporary cofferdams requesting low watertightness, anchor walls of quay walls, reinforcement of dykes, river embankments, etc. 

The installation is quite simple and fast, and can be performed with standard driving methods, with a reduced driving team as well as usual driving equipment like impact hammers, vibratory hammers or hydraulic presses.

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Introduction Cold formed steel sheet piles
Characteristics image
Durability Watertightness Installation
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Flexible production capacities

 

  • Several sections in different thicknesses, lengths and steel grades are stocked, allowing for very short delivery times of one to two weeks. 
  • A large stock of coils from 3 mm to 10 mm thickness is available for the production of main sections. Delivery is possible from 4 to 6 weeks time. 
  • Any sheet pile section can be manufactured in thickness increments of 0.1 mm (up to the maximum thickness of the specific section). Delivery time, including lead time for the supply of the coils, is less than 8 weeks

Omega sections & Characteristics

 

Omega sections are ideally suited for the execution of continuous walls that require a limited profile height. The ‘inversed’ interlocks allow for the installation of relatively shallow structures. Their shape has been optimised in order to achieve an excellent section modulus / mass ratio, with section modulus up to 1 100 cm3/m.

The shape (the geometry) of cold formed steel sheet piles depends among other on the thickness of the sheet pile. There are two interlock shapes: a "small" lock and a "large" lock. 

Durability

Unprotected steel sheet piles can corrode, leading to material loss. Maintenance may involve local repairs or corrosion protection methods like surface coating and choosing stronger sections. Corrosion rates vary based on the surrounding environment.

Watertightness

Sheet piles resist water seepage, with interlocks offering resistance. Sealing systems are unnecessary for moderate seepage, while double sheet piles with sealed joints are recommended for higher seepage resistance. Additional waterproofing options include "Beltan®Plus" filler or seal-welding after installation.

Installation

Installation of cold formed steel sheet piles is efficient, requiring minimal crew and specialized equipment. Main methods include Impact Hammers, Vibratory Hammers, and Hydraulic Presses. Techniques like pre-drilling and jetting can aid installation in challenging soil conditions.