Great lengths

Friday, 14 February, 2014 | Supplied by: Future Pools

Case study 5 case study  20453 1383529950  30a1317 reduced

Designed for both style and functionality and built as part of an entertaining area around the house, this 41 m pool utilises the maximum amount of useable space available from the front of the property to the rear, providing enough room for lap swimming, entertaining and recreation.

Built by Future Pools and designed by architect Blane Brackenridge, the pool and pond combination is the largest residential pool in Western Australia. Completed in the suburb of Cottesloe in October 2011, this project was awarded gold in the Residential Lap Pool category at the 2013 WA SPASA Awards of Excellence.

There were several challenges faced in both the design and construction of the project. The original design of the pool included a control joint in the concrete surface (due to its extreme length) to minimise the prospect of the shell cracking. This design, while practical, looked aesthetically unpleasing and needed to be changed. Both parties considered numerous ideas over a considerable period of time to come up with a new engineering plan, one that removed the need for a control joint.

In order to achieve a continuous concrete shell structure, the design included construction of a double-steeled cage with bars in a lengthwise grid pattern. This process took two weeks to complete. While a standard pool generally has a concrete render of 150 mm, the render for this project was thickened to 300 mm on both the walls and floor, to withstand the weight of the water when the pool was being filled. When the concrete shell was being poured, two concrete spray pumps were in use, spraying concrete in sequence to alleviate cold joints in the concrete.

Further challenges were presented through the differing depths of the pool floor and heights of the pool walls. One end of the pool was to be 1.7 m deep, the middle swimming lane was 1.4 m deep and the opposite end was 2.2 m. Additionally, the pool was to be constructed prior to the property’s multilevel house and the water level of the pool was to be level with the first floor of the home, so the measurements had to be exact. The pool heights and levels were established on the initial site visit, as they needed to be confirmed prior to the commencement of construction.

Adding to the complexity of the project, the neighbour’s double-storey property was situated just 1 m from the excavation.

To tie in both the first and second levels of the home, a water feature/pond was designed on the base level of the home with the wall behind the pond - the pool wall, tiled and designed as a feature. Water from the pool cascades over the negative edge, down the wall and into the feature pond. From the feature pond all water flows into a 25,000 L balance tank, which is located under the lawn in the backyard. The water is then recirculated, balanced and returned back into the pool. The pond’s coping and waterline were tiled in 20 x 20 mm mosaic. Over 5000 tiles were individually laid on the pool and pond.

Two large, circular steps shaped into the pool double as informal seats as well as complement the architectural design of the home.

The pool lighting and equipment is all centrally controlled by C-Bus throughout the home. When in use at night, the LED blue lights make the pool glow and create a bold design statement.

Project specifications:

  • Pool dimensions - 3 x 41 m
  • Pond dimensions - 3 x 4 m to a point
  • Pool internal finish - Regal Blue Dura Quartz
  • Pond internal finish - Black glass Beadcrete
  • Coping - Travertine
  • Tile size - 35 x 125 mm
  • Filter - Hurlcon CL600
  • Pump - Hurlcon CTX 500HP pump
  • Chemical balancing system - Hurlcon RC9 100-20 chlorine system
  • Lights - Blue LED underwater pool lights
  • Heating - Solar with provision for gas heating
  • Cleaner - Waterco robotic
  • Balance tank - 25,000 L
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