The new Whyalla Jetty

November 1, 2018
Filed under: Coastal Engineering — Tags: , — Peter Cornish @ 11:44 am

The existing public access fishing jetty which extends out from the breakwater at the marina at the eastern end of the town beach is in very poor condition and is unsafe for public use.

A decision has been made by the City Council of Whyalla to replace the jetty with a new structure, to act as the centrepiece for the revitalisation of Whyalla.

The construction of the jetty is to be a partnership between the City Council of Whyalla, the South Australian Government, and the new owners of the Whyalla Steelworks, GFG Alliance.

Magryn is delighted to be appointed design engineers for the project and to be involved in the upcoming construction.

The jetty is to be a steel substructure, with precast concrete decking over. The concrete is to be reinforced with glass fibre reinforced plastic (GFRP) reinforcement to ensure the structure is safe from “concrete cancer” in the future.”

Coast engineering project Whyalla

 Rendered images provided by our client

Coast engineering project Whyalla Jetty

Rendered images provided by our client

Proposed Coast engineering project Whyalla Jetty

Rendered images provided by our client

 




Coastal Engineering – Whyalla Jetty

January 31, 2018
Filed under: Coastal Engineering — Tags: , — Magryn @ 10:53 am

Whyalla Jetty Project

We are undertaking a design for a new fishing jetty at Whyalla, after the existing jetty was closed last year due to damage and degradation. Part of our scope of works is to present three options for the new jetty construction, which will be:

  • Steel piles and superstructure, as Whyalla is a steel producing town. These are to be protected with a marine grade paint system.
  • Concrete piles and superstructure, but using high strength marine grade concrete and glass fibre reinforced plastic (GFRP) reinforcement in lieu of normal steel reinforcement. This GFRP is stronger than steel and will not rust, negating the “concrete cancer” problem common in concrete structures in the marine environment. This GFRP is now manufactured in Australia to world-class standard and offers a leading edge of technology.
  • Steel piles with composite fibre beams and decking. These are beams and decking manufactured from fibreglass and will not rust. This provides a solution that largely avoids rusting of steel or concrete cancer and should have a much greater maintenance free lifespan. Again, these products are Australian manufactured.

This work is currently in the site investigation and preliminary design phase.

Whyalla Jetty - Current State

Whyalla Jetty – Current State

Whyalla Jetty - Current State

Whyalla Jetty – Current State

Whyalla Jetty - Current State

Whyalla Jetty – Current State

Whyalla Jetty - Current State

Whyalla Jetty – Current State




Coastal Engineering – Seawall Projects

Filed under: Coastal Engineering — Magryn @ 9:45 am

Coastal Engineering – Seawall Projects

Recently we have quite a few new and large coastal engineering projects at Magryn.

These include:

Rock Seawalls – Point Turton, Yorke Peninsula in South Australia

We have two at Point Turton on Yorke Peninsula, one being 400m long.

seawall port turton

Prior to seawall works commencing

During seawall construction

During seawall construction

Moonta Bay Seawall Installations

Magryn Engineering have also designed and supervised installation of several seawalls at Moonta Bay, one being 85m long.

Seawall Installation at Moonta Bay, Yorke Peninsula, South Australia

Seawall Installation at Moonta Bay, Yorke Peninsula, South Australia

 

All of these are rock revetment seawalls are designed to resist the local wave action on unstable and eroding cliffs, and prevent further erosion, protecting buildings, housing and infrastructure. All the walls are site-specific designs for the conditions at that site.

There was an article on the Yorke Peninsula Country Times Newspaper 17 January, 2018 on the Pt Turton seawall and in the same paper on 24 October, 2017 and 17 October, 2017 for the Moonta Bay seawall.