... 3. PERMEABLEA Gabion structure allows water to pass through, water pressure cannot build up behind ... and dissipate pressures exerted by water and earth masses.5. ECONOMICALFilling materials are usually found ... x 1 x 11,5 x 1 x 12 x 1 x 13 x 1 x 14 x 1 x 12 x 0,5 x 0,52 x 1 x 0,53 x 1 x 0,54 x 1 x ... and dissipate pressures exerted by water and earth masses.5. ECONOMICALFilling materials are usually found ...