Combi wall
Combi wall

Combi wall

Retaining wall structures based on steel piles

Retaining wall structures based on steel piles are often the best solution to replace traditional, labor-intensive cast-in-place based retaining wall structures.

RR® large diameter piles can be built into a continuous combi wall by welding interlocking sections or complete sheet piles into them. In a combi wall, piles act as the load-bearing structure, while sheet piles installed in between make the wall continuous.

Thanks to SSAB’s high-grade steel, our combi walls have excellent bending stiffness and resistance.


Applications:

  • Retaining wall structures
  • Building foundations
  • Wharves and piers
  • Road and railway structures
  • Bridges


Design tools

Software for fast and easy design

RRPileCalc is a design program for SSAB's steel piles. Eurocodes as well as National codes and instructions are applied in the end-bearing pile design.

PileWallCalc design tool enables easy calculation of cross section properties and bending resistances of the pile walls. The program calculates the bending resistances and normal force resistances of RD® pile wall, Combi wall and Zig-Zag Combi wall.
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Environmental responsibility and sustainability

SSAB develops new products and services in order to improve our customers’ performance in sustainability and overall efficiency.

Life cycle assessment data for SSAB’s products are available in the form of Environmental product declarations (EPDs). Manufacturing chain from raw material to finished product is carefully managed.

SSAB has introduced CE marking for infrastructure products. Declarations of Performance (DoP) indicate the technical characteristics of CE-marked products.
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Customer cases

Read about our customers' success using SSAB's Infrastructure products

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Standard pile sizes used in Combi walls. For project specific dimensions, please contact our sales.

Combi wall

Standard piles and availability of steel grades of Combi pile wall


 Wall thickness [mm]

8
10 12.5
 14.2
 16
18
20
22
23
RD400 X
X X





RD450 X
 X
 X
           
RD500 X X X X
 *



RD550 X X X X
*        
RD600 X X X X X O


RD650 X X X X X O
     
RD700 X X X X X X O

RD750 X X X X X X O
   
RD800 X X X X X X O *
RD900   X X X X X O *
RD1000   X X X X X O * *
RD1200   X X X X X O * *

  X = Steel grades S355J2H, S440J2H and S550J2H          O = Steel grades S355J2H and S440J2H

*) Please contact our sales for availability


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