The overarching goal of this project is to innovate the design of interactive visualisations and sensing for environmental change, reorienting them beyond their current use as levers of individual persuasion, towards an extended role as technologies that can link behaviour change and sustainability policy. The link aims to be bidirectional: on one hand helping people in relating existing climate change and energy policies to everyday life; on the other empowering them in influencing and engaging with policy making by generating an enhanced understanding of their own everyday practices. While there is certainly merit in using digital technology interventions to try and persuade individuals to act sustainably, it is also clear that the large-scale changes needed to tackle the climate emergency require policy interventions, beyond promoting individual action. We believe that there is vast untapped potential for digital technology to catalyse engagement with environmental sustainability policies. This project puts forward the ambition to realize such potential, and the vision of transforming the role of digital technology in relation to behaviour change for environmental sustainability. The work will target in particular practices and policies related to the built environment, in a variety of domestic and non-domestic buildings, and with policy contexts ranging from organization-focused change (e.g. temperature policy in office buildings) to policies focused on increasing the use of renewable energy (e.g. by enabling collective self-consumption of rooftop solar or demand shifting within household or community settings). Such a multi-domain approach is enabled by the involvement of four different user partners, who recognize the relevance of the proposed project and will facilitate research deployments across the private (Fosters + Partners), non-profit (Carbon Coop; Repowering) and higher education (UCL) sectors. Moreover, strategic advice by project partner Arup will further broaden the scope and impact of our work (see also letters of support). The project will leverage network-connected sensor nodes and displays, generally considered part of the Internet of Things (IoT). The research will follow a user-centred approach, involving the iterative development of robust, fully functional "high fidelity" IoT interactive prototypes and their evaluation in-the-wild through research methods from the social sciences, thanks to the close collaboration of our multi-disciplinary research team. Moreover, the project puts forward a novel participatory prototyping research approach: by combining ethnographic and user-centred design methodologies we will involve (some of the) participants not only in the design, but also in the technical development of interactive visualization and sensing prototypes. In parallel with more traditional researcher-led user-centred design and prototyping, hands-on workshops (such as 'hackathons') and online engagement activities will play a pivotal role in the research plan strengthening links between community interests and visualization design. These activities will leverage strong existing research relationships with communities along with the abundance of easy to use open source interactive tools and software libraries, and widely available hardware. This approach is designed to actively increase the social and environmental sustainability of the research process: promoting the community ownership of the open source prototypes developed throughout the project will prevent them from becoming unmaintainable e-waste once the research funding ends. Moreover, this approach will also maximize impact. The participatory prototyping activities will target multiple age groups, including teenagers, offering them STEM skills learning opportunities. Our collaboration with community-based partners will help us to reach under-represented groups particularly from BAME communities

With the increasing urbanisation of society, human health & well-being is ever more affected by the air quality within our cities. We now spend over 90% of our time indoors and so the most chronic exposures can occur inside buildings. Mixing by buoyant fluid flows within buildings plays a dominant role in determining these exposures and the proposed research focuses on the buoyant turbulent plumes that arise in buildings from, the likes of, HVAC systems, window & door openings, radiators, electrical appliances, computers, cooking and the occupants themselves. An extensive campaign of laboratory experiments will examine the physics governing the mixing and transport of heat and tracers by turbulent buoyant plumes within the confining geometry of a room. Current exposure models take no account of the influence on the flow structure of the confinement of a room. The knowledge gained through this research will enable the development of models better suited to predicting indoor exposure levels, thereby enabling better management of exposure. Investigation of these flows also has considerably broader relevance and future application to examine include, for example, the mixing and dilution of flows within our urban environments, the mixing of fluids in the food, beverage & pharmaceutical industries, and the pollutant and nutrient transport in the Earth's oceans. This work will investigate factors which affect the mixing by fluid flows typical of the flows within building, specifically by: 1) De-coupling the effects of confinement from those of the no-slip condition which are typically simultaneously introduced into a fluid flow by the presence of a boundary - this is of fundamental scientific interest; 2) Varying the extent of the confinement imposed on the flow by the introduction of a jointed wall so that the degree of confinement can be continuously varied. The jointed wall can mimic the confinement of a corner formed by the meeting of two walls within a room. The angle of this corner wall can then be systematically varied to replicate the confinement imposed when, for example, people or computer equipment are placed, for example, near a corner within a room, next to a plane wall, or indeed near an obtuse 'external' corner. The new understanding will enable better modelling of the mixing produced by heat sources, including people, radiators and computers, within rooms - providing a practical output of real application and value to society.

The Government's Industrial Strategy highlights the need for the construction industry to embrace digitally-driven, automated manufacturing if it is going to deliver the planned infrastructure development, building and renovation of the built environment. The group funded through this award understands this need and envisages an industry that routinely deploys digitally-driven, off-site-manufacturing technologies to deliver customised and unique precision components to enable the rapid, just-in-time assembly of the built environment. Seamless digital workflow and accurate process simulation will reduce the time from design to product from weeks to hours, delivering buildings faster. It will facilitate the optimisation of components, removing unwanted material (reduced resource use and embedded CO2), designing out interfaces and reducing assembly time and complexity, both during installation and at end of life. 3D Concrete Printing (3DCP) is a digitally-driven, off-site manufacturing technology that is establishing itself worldwide as a viable manufacturing process, but its potential beyond aesthetic objects is fundamentally limited by the manufacturing tolerances achievable. The work undertaken by this group will develop the next generation, Hybrid Concrete Printing (or HCP), technology that uses 3DCP to create a near-net-shape (an object slightly larger than the desired object) and then uses subtractive process (cutting, milling and drilling) to remove a small amount of material to create the net-shape - the desired object to sub-millimetre precision. HCP technology will enable the intelligent integration of building performance and energy production and storage technologies, freed from traditional constraints on form and finish. This will unlock the potential for accurate interfaces and assemblies and, hence, open the gateway for a revolution in design and manufacture of buildings and the wider built environment. The team will develop research that answers three central goals of the Industrial Strategy Challenge Fund's Transforming Construction initiative: - Designing and managing buildings: We will develop and promote new design tools and design capabilities for UK design practise that will create globally marketable expertise; - Constructing quality buildings: HCP, a digitally-driven off-site manufacturing technology, will realise greater precision in manufacture than is currently possible, enabling repeatable, high quality components to be manufactured with a much shorter lead-time; and, - Powering buildings: The technology gives the designer close control of surface finish and component geometry, enabling them to add value through function and to design in order to integrate other active components as part of automated assembly.

Reducing the demand for new materials and reducing embodied carbon will be one of the most significant challenges that the construction sector faces in the coming decades. The 20th century oversaw a 23-fold increase in accumulated resources extracted, including materials currently locked in buildings and infrastructure. This rate of consumption far exceeds the planet's capacity to regenerate, and has serious implications for global greenhouse gas (GHG) emissions. Addressing this interlinked material demand and emissions problem requires a step-change in practice, and implementation of circular economic (CE) reduce-reuse-recycle strategies, where materials are highly valued and remain in use for as long as possible. However, detailed knowledge of material types and quantities that are locked in the building stock is lacking, making estimation of CE potential unfeasible. This project will develop a spatially multi-scale framework to assess CE potential in individual buildings, cities and countries. Application of this new framework to non-residential construction in the UK will enable estimation of CE potential in the existing stock - at building, city and national level. The framework will utilise bottom-up material flow analysis to assess building level material intensity, embodied carbon and CE potential. This will be combined with remote sensing and satellite data to assess city level building stocks, with demand modelling applied to explore future material demand scenarios - considering different construction mixes and optimised CE potential. The embodied carbon implications of this material demand will also be forecast so it can be considered as part of UK decarbonisation pathways. This will be essential as the proportion of embodied carbon in the whole life carbon of the built environment is only increasing, and will continue to do so as the electricity grid is decarbonised and thus operational GHG emissions are minimised. This research will build the evidence base to demonstrate the role the circular economy can have in tackling these challenges in construction, and provide the knowledge required to facilitate shifts in policy and practice.

The development and modernisation of UK infrastructure requires the ubiquitous use of concrete, but conventional casting methods are inefficient, inflexible and dangerous. The UK Industrial Strategy White Paper identifies that the UK has insufficient skilled labour to undertake the next 10 to 20 years of essential infrastructure development, to deliver the £600Bn National Infrastructure and Construction Pipeline. Hence, the development of world-leadership in automation of key parts of the construction supply chain is critical. 3DCP removes the need for conventional moulds or formwork, by precisely placing and solidifying specific volumes of cementitious material in sequential layers under a computer controlled positioning process. This represents a radical 'mould-breaking' change, that challenges the implicit mind-sets of architects and engineers, where for millennia casting has required moulds, which in turn constrain the form, geometry and variety of building components and systems. 3DCP technology implicitly binds design and manufacture in contrast to current practice where designers and constructors are separated organisationally, institutionally and professionally. 3DCP is creating worldwide interest from the construction sector and lends itself to using readily available robotic arms as positioning tools for clever material deposition devices, which enable the manufacture of components to be digitally driven. However the required pull into commercialisation requires architects and engineers to engage their clients with designs suitable for the manufacturing process. However the underlying science as it relates to concrete composite materials simply does not exist. This project will be the first in the world to systematically investigate the interrelationships between rheology, process control, design geometry and reinforcement design in relation to there impact on the hardened properties of the final material. The project goes further and makes the first steps towards encoding the rules learnt into a software environment that will seed the development of new design software in the future.