The design of a two-layer permeable membrane/webbing filter system for a marine causeway wave defence system in the Gulf of Arabia

Abstract

The unusual problems connected with the re-furbishment of a distressed marine causeway in the Middle East are described, together with the design solution, comprising a double-layer permeable membrane/webbing filter system. A comparison is made between this design and the design requirement for a new causeway to be built in the same locality. P . R . RANKILOR FIG. 2. Filter webbing material showing minimal damage after rock test-drop from 10 m height. To the underneath side of the webbing (and not visible in these photographs) is welded a conventional geotextile lilter fabric. The webbing provides high tensile strength, protection from damage and protection from u.v. exposure.

Geomaterials: aggregates, building stone and earthworks: papers from 50 years of QJEGH

“…The other two papers in this issue report on 'The performance of impermeable and permeable reinforcement in clay subject to undrained loading' (Ingold and Miller, 1982) and 'The design of a two-layer permeable membrane/webbing filter system for a marine causeway wave defence system in the Gulf of Arabia' (Rankilor, 1982). It is more than a decade later that another paper in this area appears by Al-Omari et al (1995), 'Effect of stiffness and amount of reinforcement on strength of sand'.…”