Marina Pez-Vela | Costa Rica
Breakwater | 2007
RWI Pumphouse | Canada
Temporary cofferdam | 2010
Marina Pez-Vela | Costa Rica

Breakwater | 2007

RWI Pumphouse | Canada

Temporary cofferdam | 2010

AS 500® straight web steel sheet piles

AS500® straight web steel sheet piles are designed to form cylindrical structures, retaining a soil backfill and/or water.

AS500 circular cells layout | Steel sheet piles | ArcelorMittal
AS500 circular cells layout

The stability of constructions built up like that, a steel envelope and an internal soil mass, is guaranteed by their own weight.

Straight web sheet piles are mostly used on projects where rock layers are quite shallow (close to excavation level), where the excavation depth is very high, or where anchoring would be difficult or even impossible, or in seismic regions.

Main applications are
  • very deep cofferdams / dry-docks (temporary or permanent),
  • deep-sea quay walls,
  • breakwaters (maritime).
Straight web sheet pile structures are executed as circular cells or diaphragm walls depending on the site characteristics or the particular requirements of the project.

The forces developing in these sheet pile sections are essentially horizontal tensile forces requiring an interlock resistance corresponding to the horizontal force in the web of the pile. AS 500 interlocks comply with EN10248, with interlock resistances Rk,s up to 6 000 kN/m. Note that both the resistance of the interlock and of the web need to be guaranteed. The safety factors applied to the web resistance and to the interlock resistance can be different.

All AS 500 straight web sections interlock with each other.

See below links to two additional pages with more details on installation and cell geometries.
a) contact us for the related steel grade and further information
Characteristic interlock resistance Rk,s (guaranteed) a)
Rk,s [kN/m]
Rk,s [kips/ft]
AS500 - 9.5
AS500 - 11.0
AS500 - 12.0
AS500 - 12.5
AS500 - 12.7
AS500 - 13.0
Please refer to our brochure “AS500® Straight web steel sheet pile – design & execution manual” for further details.

Note: AS 500® is a registered trademark of ArcelorMittal
Last modified: March 21, 2020
Metric units Imperial units

AS 500

Section b t δ P A Gsp Gw Iy Wel AL
(single pile) (single pile)
mm mm ° cm cm2 kg/m kg/m2 cm4 cm3 m2/m
AS 500 – 9.55009.54.513881.363.8128168460.58
AS 500 – 11.050011.04.513989.470.2140186490.58
AS 500 – 12.050012.04.513994.674.3149196510.58
AS 500 – 12.550012.54.513997.276.3153201510.58
AS 500 – 12.750012.74.513998.277.1154204510.58
AS 500 – 13.04)50013.04.5140100.679.0158213540.58

b Width (nominal). The effective width for design purposes (layout) is 503 mm
t Thickness
δ Deviation angle. Max. of 4.0° for pile length > 20 m
P Perimeter
A Cross sectional steel area
Gsp Mass
Gw Mass per m2 of wall
Iy Moment of inertia
Wel Elastic section modulus
AL Coating area. One side, excluding inside of interlocks
4) Please contact us for further information

AS 500 Installation

Installation of AS 500 straight web sheet piles requires a specific procedure and templates.

AS 500 Cell geometries

The optimized geometry of circular cells is quite complex to determine. Below are basic...