Builders and developers grappling with carbon during the creation and ongoing operations of assets have another consideration to account, and budget, for in their projects – embodied water.
Embodied water is water consumed in growing and extracting raw materials, manufacture and transport of products, and during construction. The vast majority of it – 92 per cent of the total – relates to materials production, the Slattery research shows. The company has completed an embodied carbon-neutral logistics facility at Truganina in Melbourne’s west and its 51 Flinders Lane office building in Melbourne will be embodied carbon-neutral when complete. GPT is also looking into how to measure and reduce embodied water.
“Typically when people have spoken about water in construction they’re focusing on what happens on site, but the 92 per cent shows it’s everything to do with raw materials and the creation of those is where the water is, not on site,” he said.High-embodied-energy materials such as concrete, glass, aluminium and steel also appear to be high in embodied water. But though similar, the two concepts do not necessarily mirror each other.
Cement, a key ingredient of concrete, require high heat for production and generates about 7 per cent of global carbon emissions, while concrete production was responsible for 9 per cent of global industrial water consumption, separate studies cited by the Slattery paper show.Over time, water was likely to be priced higher to reflect its value and the loss of a global resource to the construction industry, Mr Dean said.
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