APPROVED Plans · OPW11/0116

 

 

 

NOTES

1. Design conditions
TA. Tides [QT tide tables, Noosa Head]

 

 

 

 

 

a ain 218m SUNSHINE COAST REGIONAL COUNCIL
MHWS +0.62m +1.74m 3
AHD +0.00m +1.12m
MLWS -0.80m +0.32m
LAT -1.12m +0.00m
1.2. Flood [Noosa River Flood Study, John Wilson & Partners, 1995]
50yr ARI 1.44mAHD

entrance scour 0.5m
1:3; Currents [GCCM numerical model]
Max spring tide 1 -1.5m/s.
Velocities expected to vary in response to prevailing channel configurations and location within
the estuary.
1.4. Waves
Hs 1m [nominal]
Potential wave conditions at the foreshore are expected to vary in
response to prevailing channel configurations.

2. Materials - Geotextile and Sand-filled Geotextile Mega-Containers

2.1. Containers to be fabricated using ELCOMax 1209RP geotextile (or equivalent). Expected lifetime
25 years.

2.2. Container length to be 20m [may be altered if necessary or preferred by contractor].

23: Containers to have suitably spaced filling ports [MIN 3 preferred] with "screw & glue" closure types.

2.4. Geotextile underlay to be ELCOMax 600R (or equivalent)

2.5. Geotextile flaps, where required, are to be of sufficient size to provide a 30m x 6m flap. Flaps are to
be fabricated using ELCOMax 600R (or equivalent). Flaps are to be adequately secured (e.g.
stiched) to the bottom of the container.

2.6. If flaps cannot be fabricated, may be replaced with separate geotextile fabric with 1m laps.

3. Filling of Containers
3.1. Excavation tolerances
Vertical +/- 0.2m
3.2. Containers to be filled in accordance with manufacturer's specifications using either jetpump, dredge
or suitable alternative.
3.3. Design filled container dimensions as shown.
3.4. Finished container tolerances
Horizontal _+/- 1.0m from design alignment [containers to be well butted together]
Vertical +/- 0.5m at any single point
+/- 0.3m averaged over 10m

4. Maintenance
4.1. Nominated geotextile is more robust than the standard geotextile, however may be subject to
damage from vandalism, vessel impact, anchors etc.
4.2. Structures to be inspected periodically and after all major events.
4.3. Any minor damage is to be repaired as soon as practicable.
4.4. Any major damage or deflation and the container is to be replaced.

4.5. If damage is an ongoing concern, consideration may need to be given to armouring the structures
[e.g. with rock].
46. Scour may require topping up with additional containers or placing of rock in scour holes
5. Monitoring
5.1. The natural system is highly variable. Monitoring is to be undertaken in accordance with ICM Report

"Option Review - Noosa River Spit" to determine the performance and impacts of the works.
5.2. Works may be modified or removed if monitoring indicates that this is necessary.
5.3. Implementation of later stages of the works to be undertaken as required.

Sand-filled Geotextile Containers
Finished dimensions
[Filled above water level]

Nominal Diameter = 3.0m
Volume = 81m?

Nominal Diameter = 3.4m
Volume = 103m?

Nominal Diameter = 4.2m
Volume = 183m?

Nominal Diameter = 4.6m
Volume = 224m*

.

T4 2.2m

 

 

 

 

Sand-filled Geotextile Containers
Finished dimensions
[Filled below water level]

Nominal Diameter = 4.6m

, 6m
Flap Detail

.

T4 2.6m

6m

|

T4 2.6m

 

 

LOCALITY PLAN

NOOSA SPIT

ea)

 

LEGEND

 

VERTINL DATUM: AND [RORZONTAL DATUM WGA

 

REVISION REGISTER

 

 

 

 

 

8 161103 Amended Te Bc AL

 

A 04.0211 For JOAS approval RO BC OAD

 

eevno. DATE DESCRIPTION BY ENG, APP,

 

International
¢4 Coastal
Management

OFFICE 50/G Am, SYC Marina, Maln Beach, 4217, QLD, Austalla
PGST, PO Box 206, Main Beach LPO, Main Beach QLO, 4217, Australia
TELEPHONE 61755640564 FAX 61755329147
WEBSITE wwn.coastabnanagement.com.au

 

 

PROJET NAME

NOOSA RIVER SPIT

 

DRAWING TITLE

NOTES

 

IBRAWING No. SN

NRS-011 B

 

 

JoRAWN RD [enEGKED: BC PPROVED: AD
/
REQ 2876|

 

 

 

 

 

 

Ksize: AS SCALE: NTS. DATE: 07 Apr, 2011