Gabion Retaining Wall Design Calculations

How retaining walls fail.

Gabion retaining wall design calculations.

Units of gabion wall are considered as one cohesive mass for design purposes. Restrained non yielding walls 20. 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. Pilaster masonry walls 19.

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. 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. Gabion earth retaining walls are required to comply eurocode 7 clause 9 and clause 4 and clause 5 of bs8002 2015 notably eurocode 7 cl. The use of horizontal layers of wire mesh as a horizontal tie back or soil reinforcement is discussed separately.

Four main steps must. Construction topics and caveats 24. Design examples appendix a. With traditional procedures for retaining wall design.

The design of both types is based on the same principles. 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. Design begins with the selection of trail dimensions for a typical vertical cross section through the wall. The design of gravity retaining walls e g.

Calculations this post is also available in. 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. Swimming pool walls 18. The retaining wall toe prevents the gabion wall sliding forwards the depth of the toe needs to increase as the wall gets bigger.

Wood retaining walls 14. Gabion walls may be stepped on either the front or the back soil side face as illustrated in figure 1. 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.

Sheet pile walls 21. 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. The retaining wall toe prevents the gabion wall sliding forwards the depth of the toe needs to increase as the wall gets bigger. 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 code applicable to gabions is bs 8002 the code of conduct for earth retaining. The design does not consider that the gabion mesh provides improvement to stability.