The advantage of a bag revetment is its ease of construction and moderate cost.
Sand-filled bags
are relatively flexible and can be repaired if some of the original bags are dislodged. In addition, stacked
bags are suitable as temporary emergency protection measures. Among their disadvantages, they are
limited to low energy areas, have a relatively short service life compared to other revetments, and
generally have an unattractive appearance. Since concrete-filled structures are rigid, any movement or
distortion from differential settlement of the subgrade can cause a major failure that would be hard to
repair. Sand-filled bags are highly susceptible to damage and possible failure from vandalism, impact by
water-borne debris and deterioration of material and seams by sunlight. The smooth, rounded contours
of bags also present an interlocking problem and they should be kept flatter and underfilled for stability.
87
Previous Page
