Adding a heat pump would increase carbon by 3.5 kgCO2/m2.
However with accelerating interest in Design for Manufacture and Assembly (DfMA) and Modern Methods of Construction (MMC), it sometimes seems that on-site construction is falling out of favour..In 2019, the UK’s Ministry of Housing, Communities and Local Government (MHCLG) – as it was then called – published an MMC Definition Framework (see my earlier article,.
What does DfMA stand for?).This framework proposes Pre-Manufactured Value (PMV) as a metric for assessing the scale of MMC adoption on a project.PMV is calculated as the percentage of cost that is derived before any site works and strongly encourages maximising the proportion of off-site works.. As a result, many parts of the construction industry are focusing more and more on off-site prefabrication in pursuit of benefits including lower cost, reduced delivery timescales, higher quality, improved health and safety, less waste and more productive site labour..
But is off-site always the best way to achieve these benefits?Construction sites have been around since the dawn of civilisation.
Do we really want to walk away from all that learning, and start moving as much of the construction process as possible into distant sheds?.
Is on-site construction really all that bad?.Pablo highlighted Passivhaus as a rigorous standard for energy efficiency in a building, reducing its ecological footprint.
It represents a robust model for achieving extreme energy efficiency and comfort via airtight building envelopes, high-performance windows, and ventilation with heat recovery.. 4.Importance of early integration of sustainability.
Pablo stressed the necessity of embedding sustainability discussions early in the design process to ensure these principles are deeply rooted in the project.By doing so, teams can leverage collaborative workshops and iterative processes to refine sustainability goals continually.. 5.
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