Gabion Retaining Wall Design Calculations

The design code applicable to gabions is bs 8002 the code of conduct for earth retaining.

Gabion retaining wall design calculations.

When building gabions on softer soils both the depth of the toe and the size of the base needs to be increased to spread the load over a wider area. The design of gravity retaining walls e g. The main forces acting on the wall are lateral earth pressure at the back face and vertical forces which is the weight of the wall as shown in figure 4 the latter force is employed to resist the. Four main steps must.

The design of gabion retaining walls is based on the mass of the contained stone or rock being able to resist the disturbing forces due to soil and external loadings. The design of both types is based on the same principles. How retaining walls fail. The retaining wall toe prevents the gabion wall sliding forwards the depth of the toe needs to increase as the wall gets bigger.

Dutch french the design and calculations are based on the coulomb method and conform the britisch standard bs8002 which state that the security factor against overturning fo has to be 2 and the security factor against sliding fs has to be 1 5. Soldier pile walls 22. 3 0 design guide for lane gabion walls 3 1 gravity wall design lane gabion walls are generally analyzed as gravity retaining walls that is walls which use their own weight to resist the lateral earth pressures. Design begins with the selection of trail dimensions for a typical vertical cross section through the wall.

Design examples appendix a. Gabion wall is designed in the same way as gravity retaining wall. The design does not consider that the gabion mesh provides improvement to stability. Wood retaining walls 14.

Pilaster masonry walls 19. Segmental retaining walls 17. 9 3 2 2 1 p in respect of unplanned excavation. Gabion retaining walls can be designed and configured with a stepped front face or a smooth front face.

Restrained non yielding walls 20. Swimming pool walls 18. Units of gabion wall are considered as one cohesive mass for design purposes. The use of horizontal layers of wire mesh as a horizontal tie back or soil reinforcement is discussed separately.

Gabion walls may be stepped on either the front or the back soil side face as illustrated in figure 1. Construction topics and caveats 24. When utilizing a gabion wall with a smooth front face the gabion wall should be placed on a 5 6 degree batter and is not recommended for walls above 18 high. When building gabions on softer soils both the depth of the toe and the size of the base needs to be increased to spread the load over a wider area.

The retaining wall toe prevents the gabion wall sliding forwards the depth of the toe needs to increase as the wall gets bigger. Sheet pile walls 21.