Patent ID: 8939681
Filing Date: 2015-01-27
Classification: E02B

Abstract:
1. A composite particulate material retaining bag for wall construction and erosion control, the composite bag comprising a plurality of tubular inner bags located within a tubular outer bag, the inner bags being juxtaposed with one another and arranged longitudinally coaxially relatively to one another and the outer bag, the composite bag including at least one filling inlet by means of which a fluid fill material may be transported into the inner bags to fill the inner bags, the material of the bags being selected to be porous to the fluid within which the particulate material is transported and, after the fluid fill material has been transported into the inner bags in use, to exude the fluid and retain the particulate material, and wherein the sum of each cross-sectional width of the unfilled inner bags is greater than the cross-sectional width of the unfilled outer bag.