CPCCBC406B_materials_intro - Section 1 Materials...

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CPCCBC4006B Element 3 Demonstrate how you would supervise the safe handling and storage of materials on site 1 © New South Wales Technical and Further Education Commission, 2013 (TAFE NSW – WSI) Section 1- Materials Introduction Identifying suitable products As the swing towards sustainable building practices intensifies around the world and especially in the US, there are an increasing number of organizations, books and magazines, making research data available to help in material choice. Two websites that provide a wealth of such information are: Use these websites and associated links on the sites to learn about available environmentally friendly materials and methods involved in recycling materials. Life-cycle assessment analysis Life-cycle assessment analysis (LCA) means measuring the total impact of a product on the environment. This encompasses the time from when the raw materials are extracted, through its life as a product, to when it is disposed or recycled. One LCA approach applicable to the Australian construction industry is the Building Material Ecological Sustainability Index (BES Index), which was developed at the University of NSW. This allows products to be rated according to resource depletion, pollution and energy use. LCA’s can help consumers compare products with regard to their impact on the environment. However it should be remembered that these measurements are often incomplete and may include some subjective assessments. As such they do not always take into account all other factors such as technical economic or social aspects of the product. Onsite application Applying these principles to on site building requires constant awareness and a degree of perseverance. Once the desired materials have been identified and documented though, it is simply a matter of updating your files as you go. Different organizations within Australia have tried to make
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CPCCBC4006B Element 3 Demonstrate how you would supervise the safe handling and storage of materials on site 2 © New South Wales Technical and Further Education Commission, 2013 (TAFE NSW – WSI) this easier by producing tables of data that help to classify the materials according to one criteria or another. An example of this is shown below, listing materials according to their embodied energy contained in the product. Embodied energy is the energy required to obtain the raw materials, process them and produce the building material or product. This varies according to the amount used in the building. This is difficult to calculate. A more appropriate way of measuring the energy used is according to unit area of typical house components. A table showing this is included below, for the three main construction assemblies for dwellings.
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