Dennis - Design Certificates · OPW13/0583

Sp)

OurRef 204161
Contact Andreas Reckentin

15 May 2013

Grant Dennis

PO Box 2128

ASCOT QLD 4007

Dear Sir,

STRUCTURAL DESIGN ADVICE

Project: Proposed Boat Ramp

Owner: Dennis Grant

Address: Lot 24 (49) Wyuna Drive, Noosaville

We, Cardno (Qld) Pty Ltd, advise that the proposal to construct the works described
above has been checked by us. When the works are constructed in accordance with
the approved drawings and in the location shown, the proposed works are structurally
adequate for the anticipated usage in this location and should comply with the design
and safety provisions of the Prescribed Tidal Work Code (Schedule 4A of the Coastal
Protection and Management Regulation 2003), based on the design criteria, and
assumptions listed below.

Basis of Design Advice
e The works do not impose loads that would significantly affect existing
structures.
e The works do not adversely affect the stability of the bed and banks in the
near vicinity of the structure.

e — Structural design criteria:

Maximum Wave Height 400mm wind wave
300mm boat wake

Wind Classification N3
Max. Current 1.0 m/s
Scour Reasonable scour effects from flood flows and

tidal flows have been considered

Relevant Codes AS1170,and AS 3600, except where varied by the

Prescribed Tidal Work Code

Departure from Prescribed Tidal Work Code (Schedule 4A of the Coastal
Protection and Management Regulation 2003)

e Boat ramp width of 2.86 metres is deemed satisfactory for this private use.
This design advice does not cover the construction or installation of the works on site.

The Builder shall confirm the adequacy of the site conditions during installation and
shall advise the Engineer if variation from details shown on the drawings occur. No

Australia e Belgium e Canada e Ecuador e Indonesia e Kenya » New Zealand » Papua New Guinea
Peru » United Kingdom e United Arab Emirates » United States Operations in 70 countries

Cardna

Shaping the Future

Cardno (QId) Pty Ltd
ABN 87 081 074.992

Level 1

9 Maud Street
Maroochydore QLD 4558
Australia

P.O. Box 152
Maroochydore QLD 4558
Australia

Phone: 617 5443 2555
Fax. 617 5443 5642

Email: [email protected]

www.cardno.com.au