ESTATE DEVELOPMENT
l Infection control – the design pays attention to infection control, with special consideration given to floorcoverings and choice of other materials and finishes.
l Ease of access to outdoor space – gardens are designed to provide ease of access, and become spaces that service-users can use more easily and safely. Furthermore, good visibility into the garden space ensures that privacy is retained.
l Long-reaching views – provided both from the main garden spaces and bedrooms, offering service-users with both a nearby ‘green’ view, and a horizon view of the surrounding city scape.
l Natural daylight and ventilation – to provide a positive rehabilitation environment for service-users.
l Separation of living and working spaces – providing a functionally safe but normalised division between the ward day spaces and bedrooms and the therapeutic and office spaces.
A focus on therapeutic design The Trust and C.F. Møller have worked hard to take account of the available evidence on what constitutes therapeutic design, gathering and analysing evidence from service-users, staff, monitoring reports, and conducting a detailed analysis of data from the Trust’s records. This work has led to the identification of key design principles for therapeutic environments which has informed the work of the design team. The result is a two-building solution containing eight inpatient wards across: l The Non-Forensic building (Fig. 7) will contain several wards, including Eating Disorders, General Adults, Deaf Adults, as well as Children and Adult Outpatient departments, training facilities, a Recovery College, 33 parking spaces, FM facilities, and the main mental health reception.
l The Forensic building will contain the low to medium secure wards, approximately 50% of the site parking spaces, FM workshops, waste areas,
Figure 7: A CF Møller-generated image of the Non-Forensic building.
and the receptions for Forensic and the Wandsworth Recovery Centre.
Energy strategy
The site energy strategy is through the development of a district heat network (DHN), utilising heat from the site-wide energy centre’s CHP plant to provide a highly carbon-efficient heating solution for the site. Given the necessary restrictions in emissions of NOx and particulates to minimise impact on local air quality, the CHP plant and supporting boiler plant will be gas-fired, and fitted with NOx reduction technology to reduce emissions to acceptable levels. Biomass solutions were precluded due to air quality considerations. While this high-efficiency CHP solution will not count as renewable, it is carbon- efficient, offsetting use of more carbon- intensive mains electricity, and contributing to site-wide carbon reduction targets. An Energy Service Company (ESCO) has been set up through Pinnacle Power to deliver the solution.
The location of the energy centre proved to be a challenge, as we did not want to use any valued land, and were keen to minimise any impact of resultant chimney flues. After much investigation, we realised that a good location would be in the basement of the Ballroom building, within which we are also installing an
underground DHN with capacity to connect and supply hot water for heating, with residual electricity being fed back into the grid. For resilience reasons, the mental health facilities will have on-site standby heat and electrical generation plant to provide the level of redundancy and security of supply required to meet NHS specifications. The diverse character of the site means an optimum energy strategy of combining gas-fired CHP district heating with PV renewables – as best suits
individual plots – to deliver an overall CO2 reduction of 35%, where CHP will deliver a
23% reduction in residential regulated CO2 emissions, and PV a 12% reduction in residential regulated CO2 emissions.
How did we do it?
The project to date has been a rewarding collective challenge for the team. A lot of skill, the will to succeed, and a camaraderie that results from working together, have made a difference, successfully managing changing business circumstances and the constant battle to join all the dots to form a cohesive, affordable solution across the whole site. Unsurprisingly, one of the documents we are working with is a collaboration agreement, which makes sure all parties work in a coordinated and effective manner, working with, and alongside, each other.
Figure 8: The Forensic mental health building – intermediate floor level (taken from tower crane 2).
THE NETWORK | JULY 2020
Figure 9: The Non-Forensic mental health building – ground floor (taken from middle tower crane 2).
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©Sir Robert McAlpine
©Sir Robert McAlpine
©CF Møller
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