Gabion mesh

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Gabion mesh
Posting date : Oct 22, 2013
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GABIONS consist of rectangular units, fabricated from a double-twisted hexagonal mesh. Filled with stones, gabions become large, flexible and permeable elements from which a broad range of structures may be built. Gabions and mattresses are widely used for hydraulic and geo- technical control such as retaining walls, riverbank protections, weirs, channel linings etc. GABIONS are divided into cells with diaphragms (usually spaced at 1 meter or 3’ intervals), whose function is to reinforce the structure. The mesh (except for the diaphragms) is reinforced on all edges with wires of a larger diameter to strengthen the gabions and facilitate the assembly and installation. INTERNATION STANDARD TO FOLLOW: ASTM 975 standard: Style 1 galvanzied wire as per ASTM A 641, class 3 soft temper Style 2 style 1 and overcoated with PVC Style 3 Zn-5Al-MM coated wire as per ASTM A 856 EN 10223-3 standard: Galvanzied wire meets EN 10244-2 and old BS 443 Tensile strength between 420N/mm2 and 500N/mm2 according to EN 10218-2 TOLERANCES: On the hexagonal, double-twisted wire mesh opening shall not exceed ±10% on the nominal dimension D values (see figure), as follows: Table 1 mesh characteristics Characteristics Gabion Metallic coated PVC coated Mesh type opening 8 by 10 83 by 114 mm(3.25 by 4.5 in.) 8 by 10 83 by 114 mm(3.25 by 4.5 in.) Mesh wire 2.4/2.7/3.0mm 2.4/2.7mm Selvege wire 3.0/3.4/3.8mm 3.0/3.4mm Lacing wire 2.2mm 2.2mm Fasteners 3.0mm 3.0mm Stiffeners( using lacing wire ) 2.2mm 2.2mm Preformed 3.8mm 3.4mm PVC coating thickness: Nominal N/A 0.5mm Minimum N/A 0.38mm Table 2 typical gabions size (m) Length M Width M Height M No. Of Cells Volume M3 Meter Meter Meter Each Cu.meter 2.0 1.0 1.0 2.0 2.0 3.0 1.0 1.0 3.0 3.0 4.0 1.0 1.0 4.0 4.0 2.0 1.0 0.5 2.0 1.0 3.0 1.0 0.5 3.0 1.5 4.0 1.0 0.5 4.0 2.0 2.0 1.0 0.3 2.0 0.6 3.0 1.0 0.3 3.0 0.9 4.0 1.0 0.3 4.0 1.2 Table 3 typical gabions size (feet) Length Feet Width Feet Height Feet No. Of Cells Volume Yd3 Feet Feet Feet Each Cu.Yard 6.0 3.0 3.0 2.0 2.0 9.0 3.0 3.0 3.0 3.0 12.0 3.0 3.0 4.0 4.0 6.0 3.0 1.5 2.0 1.0 9.0 3.0 1.5 3.0 1.5 9.0 3.0 1.5 3.0 1.5 12.0 3.0 1.3 4.0 2.0 6.0 3.0 1.0 2.0 0.67 12.0 3.0 1.0 4.0 1.33

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