Cairns Botanical Garden Project
Client
Cairns Botanic Gardens
Project Description
Construction of a 35 meter Pondless Stream in the Aboriginal Plant Walk. The feature included a 3 x 2.5 pond with a negative edge that then flows into the reservoir/pump station.
The feature includes a main waterfall section which then passes under walkway bridges and flows on as a stream with small rapids and drop offs.
This instillation required the use of a 4 ton excavator with rock grab and a bobcat for materials logistics and it took 5 days to complete the project with 4 staff on site.
Construction impact was minimal as there is no cement used in the construction and we were required to work around mature plantings.
Equipment List
- Signature Biofalls 2500
- Large Aquablox x 16
- Check Valve 50mm
- Large Pondless Snorkel and Centipede Combo
- Black 50mm PVC flex piping x 40 meters
- Black Waterfall Foam - Pro size x 2 cans plus cleaner
- Pump – Submersible 22000 lts/m
- Hudson Auto Fill Unit with micro irrigation piping and fittings to connect to the Gardens existing irrigation system
Materials List
- EPDM 1.14 mm Rubber Stream liner 2 x 4 m
- EPDM 1.14mm Rubber Reservoir Liner 4.5 x 5m
- PVC glue and cleaner
- Pond Liner Underlay 2 x 50 m
- Rock – 150mm to 500mm x 12 cubic meters
- Rock – 500mm – 800mm x 5 ton
- Pebble – 20mm-40mm river pebble x 4 cubic meters
Gallery and Notes
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Before shot of the Pondless Reservoir area and finishing spot of the Stream.
http://www.waterscapesaustralia.com.au/wa/wp-content/uploads/2012/01/IMA40.jpgFlecker Botanic Gardens - Cairns Regional Council
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Excavation of Reservoir
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Excavation and pre shaping completed - notice the drop-off's
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Reservoir 3 x 2.5 m x 1.8m deep.
http://www.waterscapesaustralia.com.au/wa/wp-content/uploads/2012/01/IMA37.jpgFlecker Botanic Gardens - Cairns Regional Council
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Stream and small pond area partly rocked in. Fabric on the reservoir walls and base
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Aquablock's set in place with the pump wet well snorkel and centipede to be set to one side
http://www.waterscapesaustralia.com.au/wa/wp-content/uploads/2012/01/IMA35.jpgFlecker Botanic Gardens - Cairns Regional Council
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Rock Placement with Rock grab attachment - invaluable when placing larger rocks on liner.
http://www.waterscapesaustralia.com.au/wa/wp-content/uploads/2012/01/IMA34.jpgFlecker Botanic Gardens - Cairns Regional Council
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Rock Grab in Action. Notice the liner overlap at the level change - no need to glue liner together as long as water level is no higher than the overlap.
http://www.waterscapesaustralia.com.au/wa/wp-content/uploads/2012/01/IMA33.jpgFlecker Botanic Gardens - Cairns Regional Council
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Rock Placement - a good EDPM liner will easily support very large rocks. Best to use the 1.14mm size
http://www.waterscapesaustralia.com.au/wa/wp-content/uploads/2012/01/IMA32.jpgFlecker Botanic Gardens - Cairns Regional Council
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Rocking in of the Pooling Area
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Before Shot of the Waterfall Starting area.
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Creek Start and Main Waterfall shaping
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Mark out area with paint after machine excavation and final trim with shovel
http://www.waterscapesaustralia.com.au/wa/wp-content/uploads/2012/01/IMA28.jpgFlecker Botanic Gardens - Cairns Regional Council
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Liner in Place, We use Underlay under areas when large rocks will be placed
http://www.waterscapesaustralia.com.au/wa/wp-content/uploads/2012/01/IMA27.jpgFlecker Botanic Gardens - Cairns Regional Council
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Biofalls 2500 in place, plumbing connected. Set up of the liner to be connected to the filter/ waterfall weir
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Liner cut to allow reverse fit of Weir Plate. Allows for rocks to be set right up to the face of the filter
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Screwing weir Plate in Place
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Liner connected to Filter
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Framing Rock Placement
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Rock Placement. Notice how the feature steps side to side making for a more interesting water flow
http://www.waterscapesaustralia.com.au/wa/wp-content/uploads/2012/01/IMA21.jpgFlecker Botanic Gardens - Cairns Regional Council
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Feature Rocks placement in Stream Area. We always place the larger rocks through out a feature and then fill in with ever smaller pieces
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Large drop off with an interesting large rock
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Before Shot of stream area
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Shaping stream area - notice the defined drop offs: these become the small falls and rapids
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Placement under way - edge work next to do
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Stream in construction
http://www.waterscapesaustralia.com.au/wa/wp-content/uploads/2012/01/IMA14.jpgFlecker Botanic Gardens - Cairns Regional Council
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Logs and old stumps are a great feature to add to any water feature
http://www.waterscapesaustralia.com.au/wa/wp-content/uploads/2012/01/IMA13.jpgFlecker Botanic Gardens - Cairns Regional Council
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Log becomes part of a small waterfall
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Edge work under way - the finishing edge work is what makes or breaks a natural feature. It can take a large part of the project to finish properly
http://www.waterscapesaustralia.com.au/wa/wp-content/uploads/2012/01/IMA11.jpgFlecker Botanic Gardens - Cairns Regional Council
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Using Black Water fall Foam to seal a waterfall area
http://www.waterscapesaustralia.com.au/wa/wp-content/uploads/2012/01/IMA10.jpgFlecker Botanic Gardens - Cairns Regional Council
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Notice the foam coming from behind the rock. This will be trimmed and covered in pebble
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Finished small rapid area. Water can go only over the rock as it is sealed in place with the construction foam
http://www.waterscapesaustralia.com.au/wa/wp-content/uploads/2012/01/IMA08.jpgFlecker Botanic Gardens - Cairns Regional Council
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Finished shot of water fall area. This photo is around 6 months after the installation
http://www.waterscapesaustralia.com.au/wa/wp-content/uploads/2012/01/IMA07.jpgFlecker Botanic Gardens - Cairns Regional Council
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Finished shot of creek area. It runs under two walk way bridges .
http://www.waterscapesaustralia.com.au/wa/wp-content/uploads/2012/01/IMA06.jpgFlecker Botanic Gardens - Cairns Regional Council
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Stream flows from the small pool into the Pondless reservoir. LEaves and debris collect here for easy cleaning
http://www.waterscapesaustralia.com.au/wa/wp-content/uploads/2012/01/IMA05.jpgFlecker Botanic Gardens - Cairns Regional Council
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Showing the log as part of the creek
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Main waterfall area
http://www.waterscapesaustralia.com.au/wa/wp-content/uploads/2012/01/IMA03.jpgFlecker Botanic Gardens - Cairns Regional Council
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Pooling area which then runs into the reservoir. Any configuration is possible
http://www.waterscapesaustralia.com.au/wa/wp-content/uploads/2012/01/IMA02.jpgFlecker Botanic Gardens - Cairns Regional Council
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Water fall area with drop off under walkway bridge
http://www.waterscapesaustralia.com.au/wa/wp-content/uploads/2012/01/IMA01.jpgFlecker Botanic Gardens - Cairns Regional Council
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