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Straight web sections

Straight web sheet piles are designed to form cylindrical structures, generally closed, retaining a soil backfill. The stability of constructions built up like that is guaranteed by the weight of the internal soil massive. Straight Web sheet piles are mostly used on projects where rock layers are close to ground level, where the excavation depth is very important or where anchoring would be difficult or even impossible.

Straight web sheet pile structures are realised as circular cells or diaphragm walls depending on the site characteristics or the particular requirements of the project.
The efforts developing in these sheet pile sections are essentially horizontal traction forces requiring interlocks especially designed for declutching resistance, corresponding to the horizontal force in the web of pile.

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Section Dimensions Perimeter
of single
pile
Sectional
area
Mass
per m
Mass
per m2
of wall
Section
modulus
Moment
of
inertia
Coating
area*
L e
mm mm cm  cm2  kg/m  kg/m2  cm3  cm4  m2/m 
AS 500-09.5 500 9.5 139 81.6 64.0 128 37 170 0.58
AS 500-11.0 500 11.0 139 90.0 70.6 141 49 186 0.58
AS 500-12.0 500 12.0 139 94.6 74.3 149 51 196 0.58
AS 500-12.5 500 12.5 139 97.2 76.3 153 51 201 0.58
AS 500-12.7 500 12.7 139 98.2 77.1 154 52 204 0.58
AS 500-13.0 500 13.0 140 100.6 79.0 158 54 213 0.58

*One side, excluding inside of interlocks

Note: all straight web sections interlock with each other.
Interlock strenghts up to 5 500 kN/m are possible.