Sack gabion is a cylindrical bag made of double twisted steel woven mesh panel. It is assembled by rolling the mesh panel into a cylindrical shape and overlapping the selvedge edges. Inserted steel wire which runs through the sack facilitates tightening the bag when it is filled with riprap.
Sack gabions are filled with stones on the job site forming flexible and permeable structures and extensively used in river training, bank reinforcement, slope protection and similar applications.
Compared with other gabions which have rectangular or square profile, gabion bag has no requirement of foundation conditions and will create a firm platform. Hence, gabion sack is especially suitable for emergency conditions when the found is not prepared.