Gabions Box for River Training Works - Construction of Levees, Platforms and Channels

In this page, we introduce steps of fabrication of gabion boxes ( including placement of gabion box, filling requirements, measurement of gabions works), bank protection layout on sites, construction of levees, platforms and channels realignments. All these works are basic for the bridge construction project along riverside.

FABRICATION OF GABIONS:

Standard Dimensions for Gabion Boxes and Mattresses Used

Step 1. Stretching: The gabions shall be unfolded on the ground and stretched to the maximum extent possible while ensuring that all creases are in the correct positions for forming the box.

Step 2. Cutting: Any cutting required shall be carried out so that the cut ends of wire are a minimum of 50 millimetres from the twisted joins. After stretching and cutting as required the side and end panels shall be lifted so that the tops of all sides are level. Any loose ends of wire protruding above a level plane at the top or from the corners shall be bent down into the gabion box.

Step 3. Fastening and Lacing: Corners shall be fastened securely and the box shaped prior to commencing any binding. The binding wire shall be securely fastened to the top of a corner by lacing between two meshes at the corner and twisting the binding wire through three half turns. The wire shall then be laced around the two vertical selvedges, when applicable, and through each mesh in turn in a continuous lacing action and shall be pulled tight before securing to the bottom corner by the three half turns to an adjacent wire.

Step 4. Positioning of gabion boxes before filling: The diaphragm panels shall then be placed in position and secured to the gabion sides in the same manner as the corners. The empty box shall then be firmly seated on a prepared area in its final position and laced to the adjoining corners or sides of gabions previously placed along all adjoining corners and tops. If additional binding of the gabions is required this shall be shown on the Drawings or specified.

Placement of the Gabion Boxes:
The placement of the gabion boxes shall be carried out in an orderly manner so that a face of uncompleted work is maintained. At least two rows of empty boxes shall be wired together at the face of uncompleted work prior to filling the box closest to the completed work.

Prior to filling any box one end or side of the box shall be secured to completed works or to stakes driven into the ground at the corners or in any other approved manner and the opposite end, side or corner shall be stretched with crowbars and secured top and bottom in an approved manner.