eTool was engaged by EMCO to conduct a Life Cycle Costing (LCC) study on the HBF Arena Upgrades located in Joondalup – WA. The design development report required a conclusive whole facility life cycle cost analysis showing cost elements to be budgeted for in each year of the planned project useful economic life.
The object of the assessment was the structure itself. eToolLCD software was used to model the LCC using available construction drawings. The assessment included all the upstream and downstream processes needed to provide the primary function of the structure from construction, maintenance, operation, and finally demolition and disposal. The inventory included the extraction of raw materials or energy and the release of substances back to the environment or to the point where inventory items exit the system boundary either during or at the end of the project life cycle.
The results of the life cycle model over the 50 year period showed little difference between the benchmark design and the concept design as both assume NCC compliant ‘deemed to satisfy’ thermal comfort measures. It was assumed that the concept design had slightly better energy consumption due to design features (like the extended roof) which should be of benefit. These design features were also reflected in the capital costs of the building design. The Low Impact design (assuming all low impact strategies are put in place) significantly exceeds the performance of the other designs modelled. This is due to energy cost savings which are significant (over $100,000) in the first year and expanding over time with inflation).
Opportunities – The study highlights a number of opportunities to improve the LCC of the buildings during the operational phase. These are summarised below:
• Care for the sprung floor in the sports hall to extend the life past 25 years.
• Care for other floor finishes (carpet and vinyl throughout) to extend their life.
• Care for the sports seating in the sports hall to extend life past 15 years.
• Ensuring energy is conserved by switching off lights and air conditioning in zones that are not in use.
• Ensuring building ventilation systems are deactivated when the buildings (or zones) are not in use.
• Minimise cleaning costs by spacing cleaning frequency, careful selection of service provider and setting high expectations of occupants regarding cleanliness.
eTool LCC is a whole of building, whole of life design approach aimed at improving the economic performance of buildings. The scope of the LCC model provides certainty that design decisions made with the aim of improving performance of one life cycle stage or component of a building don’t result on poor trade offs and net reductions in performance.