Articles:
One of the greatest challenges we have is finance, because there’s still a lot of prejudice against nuclear power in the finance market.
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?.
Construction sites could be defined as locations where finished assets are built.
They can be messy, congested, dirty and chaotic places.The building design also needs to achieve low primary energy & renewable demand.
This is a combined target and is based on the energy consumed by building systems and the renewable energy generated by building mounted wind, photovoltaics or solar thermal systems.. For the above reasons, Passivhaus is a suitable standard for clients and developers that seek a well-established, sustainability standard to deliver low energy buildings with the highest construction quality, aspiring to net zero carbon in operation.. Bryden Wood’s 10-step approach to Passivhaus building design and construction.Whilst there is no fixed formula to Passivhaus, Bryden Wood proposes the achievement of the above targets via the following 10 steps, which relate both to design decisions and construction specifications for improved sustainability:.
A compact shape with low building envelope to volume ratios.. Building orientation to benefit from useful solar gains.. Optimised window sizes to capitalise on useful solar gains, reduce heat losses and deliver exemplary levels of natural light into the building..Highly insulated walls, floors and roofs.. Site specific shading to mitigate summertime overheating, whilst allowing winter solar heat gains.. High performance triple glazing with thermally bridge- free heads, jams and sills.. A thermal bridge-free building via detailed design of junctions, and clear and easily buildable air seal lines, to deliver the specified air permeability..