Trench Sections

Trench sheets are used to form a retaining wall through overlapping of the sheets.

The main types of applications are sewerage and drainage works, and particularly sheeting for small excavations and temporary works. They are indispensable structural elements that provide protection for the job-site personnel working within enclosed areas.

Trench sheets have a very low elastic section modulus and are not watertight. They usually require at least one support (struts) at the top of the wall.

However, with thicknesses up to 8.0 mm, they can be reused multiple times.

Last modified: November 29, 2018
Metric units Imperial units


b Width of a single pile
h Height
t Thickness of flange
s Thickness of web
A Cross sectional steel area
Gsp Mass per m of single pile
Gw Mass per m of wall
Iy Moment of inertia about the main neutral axis y-y
Wel,y Elastic section modulus
Sy Static moment
Wpl,y Plastic section modulus