A Gabion (from Italian gabbione meaning "big cage"; from Italian gabbia and Latin cavea meaning "cage") is a cage, cylinder, or box filled with rocks, concrete, or sometimes sand and soil for use in civil engineering, road building, military applications and landscaping. For Flood Control and Slope Protection. For erosion control, caged riprap is used. etc.
Gabions and Mattresses
Gabion box divided into several cells by virtue of clapboards, and edges of all plates employ steel wire of larger diameters as a way of strengthening intensity of Gabion Box structure. Besides, Gabion Box is used to server slope protection structures regarding water courses, banks and roadbed slopes. Not only does Gabion boxes protect riversides from damage caused by corrosion arising but also achieves natural convention exchange between waters and downslope soil mass for ecological balance. Upslope vegetation contributes to landscapes planting. PVC coating can be applied when it is used to waters with high salinity.
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 380N/mm2 and 550N/mm2 according to BS 1052.
TOLERANCES:
On the hexagonal, double-twisted wire mesh opening shall not exceed 10% on the nominal dimension
D values
Specification | Earth Gabion | Earth Mattress |
Body wire (BW) - Option A (DPWH) - Option B |
3.05mm 2.70mm |
2.20mm - |
Selvedge Wire (SW) - SW Option A - SW Option B |
3.80mm 3.40mm |
2.70mm - |
Lacing/Tie Wire | 2.20mm | 2.20mm |
Mesh Opening | MESH 8cm x 10cm | Mesh 6cm x 8cm |
Standard Opening - L X W X H (m) |
2m x 1m x 1m 2m x 1m x .5m 3m x 1m x 1m 3m x 1x x .5m 4m x 1m x 1m 4m x 1m x .5m |
6m x 2m x 0.3m |
There is another Gabion, it is called PVC Coated Gabion. PVC Coated Gabion can be applied when it is used to waters with high salinity
Specification | PVC Coated Gabion |
Body wire (PVC) |
2.70mm |
Selvedge Wire (PVC) |
3.40mm |
Lacing/Tie Wire (PVC COATED) |
2.20mm |
Mesh Opening | MESH 8cm x 10cm |