Triple Twisted Hexagonal Mesh Gabion Mattresses are mostly used in projects of Flood Embankment and intake works. Gabions types are boxes and mattresses. Aerct supplies quality gabions system for flood protection, with detailed requirements for the gabion wire, mesh fabric, filter fabric, stones and construction of gabions work as following.

Technical Requirements of Gabion Mattresses:

Wire Fabric for Gabions

All wire used in the fabrication of gabions (including selvage wire and lacing wire) 

and in the wiring operating during construction (including tie wire) shall be 

annealed mild steel wire, having an average strength of 38-50 kg/mm2.

The adhesion of the zinc coating to the wire should be such that, when the wire is 

wrapped six turns round a mandrel of 4 times the diameter of the wire, it does not 

flake or crack to such an extent that any flakes of zinc can be removed by rubbing 

with the bare fingers.

Wire mesh fabric shall be hexagonal triple twist mesh. The tightness of the twisted 

joints shall be such that a force of not less than 1.7kN is required to pull on one 

wire to separate it from the other wire provided that each wire is prevented from 

turning and the whole process is done in one plane. Ultimate failure load in the 

direction of the weave will be about 43 kN/metre length. Longitudinal elongation of 

mesh will not exceed 10%.

The gabion mesh shall be cut, folded and wired together to form joints, angles, 

curves or slopes which are not possible to obtain in the structures with the 

standard rectangular gabions, the mesh must be cleanly cut, and the surplus mesh cut 

completely out, or folded back or on to, and neatly wired to an adjacent gabion 

face. The cut edges of the mesh shall be securely laced together with binding wire.

Gabions and mattresses should be laid on a filter fabric.

The filter fabric shall be of a non-woven melted fabric consisting of a mixture of 

polypropylene and polythene or other similar materials. The fabric shall be 

resistant to ultra violet rays and sunlight.

Where overlapping of fabric is required, the overlap shall not be less than 500 mm 

and shall be sewn with a lock type stitch in such a manner that it produce a joint 

as durable as the fabric.

Tensile strength shall be not less than 2kN/m. Permeability (ViH50) shall be not 

less than 60l/s*m2.

Storage and handling of the fabric in no case shall be the geotextile be exposed to 

direct sunlight, ultra violet rays, temperature greater than 60o C, mud, dirt, dust 

and debris, to the extent that its strength, toughness or permeability 

characteristics are diminished.