TO: Builders, Architects, Certifiers, Owners, Authorities and Sutherland Shire Council.
RE: SEAWALL SAFETY AND COMPLIANCE WITH REGULATIONS
The seawalls in Sylvania Waters were constructed generally over 50 years ago and there are many properties that have seawalls which need attention. In recent years we have had some serious situations occur where the owners, builders or contractors did not respect or understand the critical importance of the seawall, capping and associated tie rods.
Only recently, we had a property renew their tie rods and discovered that their plumbers were about to excavate across the backyard for drainage which would have cut all tie rods and caused the seawall to be unstable and possibly collapse. There are no records of these at “Dial before you dig”.
Compliance With Regulations
In Sylvania Waters all waterfront properties must comply with Sylvania Waterways Limited Regulations otherwise the opportunity to obtain a licence or approval for waterfront facilities may be affected. This situation can cause a major disappointment for the property owners and is sometimes costly to rectify.
To ensure these situations do not occur we now impose the following procedures for all properties carrying out renovations, pool construction, re-building and demolition for all Sylvania Waters waterfront properties.
Pre demolition, pool construction, site excavation (other than seawall repairs or pontoon DA’s) on the seawall the following must be obtained:
(a) Engineers safety report via Sylvania Waterways Limited to the current seawall status.
(b) Submit drawings to Sylvania Waterways Limited for comment, must show all intended fences including material types.
(c) Show rectification of any non compliant issues.
Sylvania Waterways have recorded all recent engineers certification and records to every property and these records are available on request. Sylvania Waterways Limited Directors are available to discuss any project and/or pre-design review on request at no cost.
Minimum procedures during any project
1) Life buoy and lanyard must be fitted near seawall during construction and completion of project.
2) A temporary siltation fence to be erected across the back of the property in front of the seawall (be aware of tie rods).
3) No core holing or drilling into the seawall capping (especially by fencing contractors) without review and approval given on each situation by Sylvania Waterways Limited.
4) A sign semi permanently fixed near the seawall capping which notes:
NO DIGGING OR EXCAVATION WITHIN 15 METRES OF THE SEAWALL. SUPPORTING CABLES ARE BURIED IN THIS AREA – REFER TO SYLVANIA WATERWAYS ENGINEER FOR APPROVAL.
5) No demolition without approval from Sylvania Waterways Limited and the seawall engineer. (eg. Do not operate a 10 tonne excavator/Kato within 12 metres of the seawall, it may cause a collapse.)
6) Note: if seawall works are required it is most economical for access to carry out these upgrades when the block is cleared after demolition. This can save you thousands of dollars.
7) New engineering procedures for seawalls are available to all members at no cost. A report from Sylvania Waterways Limited will be issued after submission of documents or discussions so the works can proceed.