Construction

Gabions Weldmesh and Trapions

Gabions Weldmesh

Gabions are wire mesh baskets formed by connecting individual panels of mesh with helical spirals on the vertical edge wires creating an open series of box compartments that fold in a concertina fashion to be flat packed. Lids and bases are sometimes supplied loose with helical spiral binders to connect the top and bottom of the open cells along one edge. Alternatively, they may be factory fitted where practical for transportation purposes.

Gabions are engineered retaining structures designed as mass gravity walls to hold back earth or other solid materials without overturning, sliding or foundation failure. All designed, gabion walls should be checked by a suitably qualified structural engineer on site prior to construction.

General information

Gabions are engineered retaining structures designed as mass gravity walls to hold back earth or other solid materials without overturning, sliding or foundation failure. All designed, gabion walls should be checked by a suitably qualified structural engineer on site prior to construction.

The modular structure of these walls allows for variation in section to be accommodated as the height increases. The inherent strength of the units ensures structural and dimensional stability whilst a degree of flexibility accommodates ground movement and settlement where necessary.

Length (m) Width (m) Height (m)
1.0 1.0 0.5 to 1.0
1.5 1.0 0.5 to 1.0
2.0 1.0 0.5 to 1.0
3.0 1.0 0.5 to 1.0
4.0 1.0 0.5 to 1.0
5.0 1.0 0.5 to 1.0

Trapions

Trapions are a form of gabion manufactured from welded wire mesh panels with either one or both faces inclined at varying angles to the horizontal dependant upon the unit height. They are supplied in lengths of 1, 2 or 3m or part lengths thereof and pre-assembled with helical spirals for flat packing and ease of transportation to site

General information

Trapions are engineered for dimensional rigidity and stability in structural applications. This inclination of the walls normally at around 8% degrees from the vertical is essential for the stability of these gravity systems. They are trapezoidal in section to permit easy construction of free-standing flush-faced (not stepped) tapered walls to act as either sound bunds alongside roads and railways dependant upon what they are filled with or as simple decorative perimeter walls. The wall ends are terminated with prefabricated trapezoidal shaped Weldmesh panels.

Trapions are normally filled with clean graded gabion stone for a rustic appearance. In circumstances where a vegetative face is required specialist advice should be sought from suitably qualified landscape architects to ensure that the correct mix of filling mediums, irrigation and planted materials are used to sustain growth.p>

Mesh aperture(mm) Wire diameter(mm) Corrosion protection Durability
76.2 x 76.2 4.55 Zincalu Super 100 to 1000 (g/m²) More than 70 years in a mild environment
References BS 1052 BS EN 10244-2