Excavation for an Olympic-sized swimming pool, with eight lanes at Oran Park.
Residential construction in Western Sydney particularly in NSW has been on the upsurge in the recent years. This has been made possible due to the increase in residential density, infrastructure and zoning requirements that made the Local Councils to meet these needs. As such, development embarked in 2008 and had been going on since then to date. As planned, the Oran Park is a modern urban setting with a broad range of facilities that will be put up concurrently, and the final developments will be commercialised. The precinct of the town, once complete, will include facilities such as 18 hectares of employment land, a 50,000 square metre city centre and two neighbourhood centres, 36km of walking and cycling routes and 148 hectares of open space (Oran Park Town, 2017).
Eventually, the town is expected to have 25,000 residents living in the community whereby they will enjoy the most modern lifestyle that is both sustainable and holistic (Anon, 2017). One of the main focus in the developments will be the construction of an Olympic-sized swimming pool, with eight lanes that will offer both leisurely and recreational services to the residents of the city. This paper will look into the construction of the swimming pool with a particular focus on the civil earthworks and footings required for this structure. Also, it will discuss the Work Health Safety (WHS) issues that will be encountered during the construction of the same.
The biggest task that will need to be undertaken in the building of the swimming pool is the excavation and other earthworks. Given the size of the proposed pool, the contractors excavating will need to focus on the stability of the soil as well as the depth and alignment aspects of the walls of the pool. For such a big size pool, the most appropriate machinery to use are the backhoe excavators, Bobcat excavators, and loading trucks to damp the soil. However, before any excavation begins, it will be crucial to conducting geological investigations to establish the subsurface conditions of the site to be used for the construction. It will be done by boring about eight trial pits on the site which will give details such as; the ground water level, the depth of the bedrock, the shear strength of the soil among other characteristics. An Olympic sized pool runs 50meters long-25meters wide and 2 meters deep. As such the total volume of soil to be excavated is about 2500m3 that may cost about 5 AUD per cubic meter to excavate.
Due to the nature of the excavation some of the risks that may occur include the collapsing of the sidewalls of the pool after excavation. To avoid this, the soil may be stabilised by grouting using cement on the sides of the pool. This will also solve such problems like sediment ponds and erosion that may occur. Also, all the workers will be required to wear safety gear such as helmets, protective boots, and reflective clothes during the excavations. A temporary fence will be put up on the site that is expected to be excavated which will prevent any unauthorised access of the premise.
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Oran Park Town. (2017). Sydneys fastest growing town | Oran Park Town. [online] Available at: https://www.oranparktown.com.au [Accessed 16 May 2017].