EVENT | BUILD2PERFORM LIVE 10 years. It particularly looked at energy performance and indoor air quality, and found that the retrofitted homes still performed extremely well in terms of energy use. Energy performance has not significantly degraded at all, which is a very positive finding. Its much better than the national average, and many of the homes perform more or less in line with Leti targets, Godefroy said. Air leakage was slightly higher, with degradation of doors and windows being the key contributor. Feedback from residents was that conditions were comfortable, but summer comfort rated less well than winter comfort. There were some issues around system maintenance, said Godefroy, with complex services generating more problems. The risk of mould from ambient conditions, was assessed by measuring relative humidity and surface temperature, and tests looked at the movement of moisture through the fabric. Mould related to ambient conditions was rated as very low risk across seven of nine homes tested and there was generally low CO2 across all homes, indicating good ventilation. Kristina Allison MSLL MCIBSE, vicepresident of the SLL that are healthy and inclusive to use. There has been a shift away from traditional accessibility measures focused on physical impairment to a more inclusive approach for neurological conditions, said Rob Turpin, head of sector healthcare at the BSI. Challenges have been identified relating to lighting, acoustics, route preview, signage, and clarity in buildings. Turpin introduced PAS 6463 Design for the mind, a world-first standard that covers designing for neurodiversity. He hopes it will be a catalyst for international standardisation. Tin Oberman, senior eesearch fellow at UCL, discussed the importance of soundscapes and inclusive acoustics. He and Turpin highlighted that the majority of auditory research acoustics have been driven by healthy-hearing participants, and knowledge about how most people perceive sound is missing. Speakers noted that the event did not create the most accessible acoustic environment. Rachel Smalley, head of inclusive design at Jacobs, said future approaches must ensure the environment is suitable for a diverse population, and that requirements are integrated from the outset. Pumped for growth Independent consultant Roger Hitchin shared research by the IEA Heat Pump Technologies programme on non-domestic heat pump retrofits. The Annex 60 programme (Heatpumpingtechnologies.org/annex60) is an international collaboration aimed at identifying and quantifying technical options for non-domestic retrofits, and providing advice and tools to help decision-makers. There is very little guidance for building owners and tenants, said Hitchin. We want to provide high-level guidance so they can look at different heat pump systems. The project will link to case studies and Hitchin is particularly keen to include studies showing comparative costs. An online tool will invite users to describe the building and its HVAC systems and the degree to which fabric will be upgraded. It will then come up with a shortlist of solutions worth investigating. Ken Gordon, CEO of the Ground Source Heat Pump Association(GSHPA) , spoke of the upcoming revised TM51 guidance on GSHPs, which would include information on shared ground loop systems. These are increasingly popular because they offer economies of scale, said Gordon. Accessible acoustics In a discussion about wellbeing in the built environment, Foster & Partners associate partner Milena Stojkovic FCIBSE said: We have a responsibility to create environments Crossing generations The event attracted leading building services brands from across the industry F or more information on Build2Perform Live, visit bit.ly/CJLIVE23 A Young Engineers Network (YEN) panel focused on how to foster collaboration between older and younger members, including buddy systems and mentoring. Ruth Tatanga MCIBSE, chair of YEN London emphasised the importance of examining what seniors can learn from younger colleagues, and Jack Kenny, senior M&E consultant at RLB, agreed. Play to the strengths of both generations, foster flexibility, and provide opportunities without rigidity, he said. CJ 22 January 2024 www.cibsejournal.com CIBSE Jan 24 pp20-22 Build2Perform.indd 22 21/12/2023 15:26