INNOVATIVE SEAWALL DESIGN DEVELOPMENT IN NSW, AUSTRALIA: 4 RECENT CASE STUDIES

Abstract

Coastal development is coming under increasing pressure from climate change. Management of erosion hazards essentially involves retreat or protection. Where hard coastal protection structures are selected, the aesthetics and amenity benefit, in addition to the protection functionality, are subjected to ever-increasing scrutiny. With legislative changes in NSW essentially limiting temporary coastal protection to sand-filled geocontainer structures and decision-makers becoming more stringent about hard structures, the demand for temporary structures is also on the rise. This presentation will cover four recent, completed case studies in NSW including two temporary medium-term structures at Stockton (Newcastle) using geocontainer and Rock Bags and two longer term hard structures at Kingscliff (Tweed Shire) and Avoca (Central Coast). Innovative solutions have been developed for the varying design scenarios.