A-Jacks®
Streambank erosion often produces steep banks with little or no vegetation. These unprotected banks are even more susceptible to erosion due to over steepening, loss of ground cover, groundwater discharge, and stream erosion at the base of the bank. The cost of stabilization may be quite high using conventional hard methods, particularly for high banks. A-Jacks concrete armor units provide an alternative which, when used with biostabilization techniques, develops a costeffective solution.
A-Jacks are high stability concrete armor units designed to interlock into a flexible, highly permeable matrix. A-Jacks can be installed either randomly or in a uniform pattern. The interstices formed within the A-Jacks matrix provide approximately 40% void space in the uniform placement pattern. The voids provide habitat for fish and other marine life when applied as a reef, revetment or as a soil support system in river applications. Whether or not A-Jacks are applied as a revetment on riverbanks or lakeshores, the voids may be backfilled with suitable soils and planted with a variety of vegetation including grasses, shrubs and trees above the normal base flow.
A-Jacks are high stability concrete armor units designed to interlock into a flexible, highly permeable matrix. A-Jacks can be installed either randomly or in a uniform pattern. The interstices formed within the A-Jacks matrix provide approximately 40% void space in the uniform placement pattern. The voids provide habitat for fish and other marine life when applied as a reef, revetment or as a soil support system in river applications. Whether or not A-Jacks are applied as a revetment on riverbanks or lakeshores, the voids may be backfilled with suitable soils and planted with a variety of vegetation including grasses, shrubs and trees above the normal base flow.
