2. Rockfill for the sack gabion must be quarried rock of sizes in accordance with the engineer¡¯s specifications.
3. Before filling, the mesh should be placed on the prepared surface and tensioned to ensure that the shape is good. For speed of construction, several gabions may be laced together end-to-end with fully laced joints on their adjoining vertical edges and tensioned as a unit. Filling of sack gabion with rockfill may be by machine or hand taking care to minimise voids.
4. If the height of sack gabion is more than 500mm then cross-ties of HDPE braid should be installed at vertical intervals of 250-400mm to improve stability and quality of finish.
5. Slightly over-fill each mesh, using smaller stones on the surface, to allow for settlement. Adjust finished surface of rockfill as needed. Close down top of sack gabion and tightly lace, all edges and top-diaphragm joints