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The main considerations for the designer are usually the width of each course of gabion baskets and whether the front face of the gabion wall is to be stepped or sheer.

The first step in gabion wall design is to input a proposed retaining wall geometry. This is because there are no bonds between the levels in a gabion wall, just the friction between the courses. As described above, the overturning and sliding failure modes must be completed both for the whole structure and for each level of the gabion wall. The three failure modes are bearing capacity failure of the underlying soils, overturning failure of the gabion wall or sliding failure of the gabion wall caused by the forces acting on the gabion wall from the retained materials. This is the approach required in BS EN 1997. The CivilWeb Gabion Wall Design Spreadsheet works by completing a design analysis for a proposed gabion wall design input by the designer against three failure modes. Unique design analysis tools also show the designer graphically the effects of changes to the main design parameters, allowing the designer to optimise the design at a glance.Ĭompared to completing the calculations by hand, the CivilWeb Gabion Wall Design Spreadsheet will save the designer hours of work on every single design. The designer can see instantly the effects of changes on any of the parameters making optimisation of the design quick and simple. The CivilWeb Gabion Wall Design XLS completes these time consuming calculations automatically every time the designer alters any of the input parameters. If an optimised gabion wall design is required, the whole process may need to be repeated multiple times. The requirements of BS EN 1997 further complicate matters with two design combinations which need to be checked for every level. For a high gabion wall this can lead to dozens of calculations. This means that the stability calculations need to be repeated for each layer in the gabion wall. This is mostly because of the fact that there are no bonds between the layers in the gabion wall. The design of gabion walls and other modular retaining wall systems can be extremely time consuming.