ARCHITECTURE & DESIGN
platforms from other projects, our contribution to the P22 repeatable room programme, our lean design development of an HBN 15-01 exemplar Emergency Department, and our collective expertise in the delivery of MMC for healthcare to inform current design proposals for a number of major hospitals across the UK.
Paul Bell dubs the new Dumfries and Galloway Royal Infirmary ‘an exemplar of offsite and modular construction’.
Struggling to ‘flex’ Traditional bespoke hospital designs can struggle to flex and quickly adapt to change. By developing designs based on a standardised platform approach, underpinned by a dimensional rigour which leaves room for flexibility, and incorporating standardised design components, we can begin to realise the opportunities of pre-manufactured value (PMV), the measure of the extent of offsite construction used on a project. This standardised platform approach can be combined in a number of configurations to meet the bespoke needs and demands of any given project, creating a flexible framework based on the key principles of NZC, MMC, and a digital strategy aligned
with the international standard for BIM and information management, ISO 19650. A key challenge for the UK New Hospital Programme is to facilitate the flexibility required to respond to the current and future needs of individual projects, while adhering to the demand for limited scope for variation. Rather than setting a definitive standard grid and fixed templates for clinical settings, we have developed a series of design principles that can be implemented to inform, but not limit, projects, studying how typical rooms and spaces can be stacked to respond to particular sites, massing, scale, land take, typology, and brief constraints. This approach builds on our knowledge of standardised
Dumfries and Galloway Royal Infirmary – early supply chain engagement Dumfries and Galloway Royal Infirmary is an exemplar of offsite and modular construction. The project utilises systems including large-scale prefabricated components and structural elements – from external envelope panels, to pods, to building service installations. The goal was to lead a step change in increased production of the construction process, and quality improvements, plus an associated reduction in costs. The advanced application of BIM
allowed a direct process flow from digital prototyping at design stage through to manufacture. The design team, working directly with the contractor, adopted standardised and prefabricated components and elements of construction to improve product quality, guarantee consistency of performance, enhance efficiency of maintenance, and provide flexibility for future changes and ease of replacement. This was an integral part of the project delivery strategy, and was applied to all aspects of the building – civils, structure, envelope, internals, and services.
The advanced application of BIM on the Dumfries and Galloway Royal Infirmary scheme allowed a direct process flow from digital prototyping at design stage through to manufacture.
62 Health Estate Journal February 2023
Façade system The façade system is a series of precast load-bearing insulated panels that are manufactured off site using Laing O’Rourke’s DfMA principles. The use of offsite-manufactured wall panels, complete with insulation and window installation, facilitates safer, cleaner, and more efficient construction techniques, which minimise disruption, guarantee quality and cost, and save time by reducing the overall construction period. The principles of DfMA are integrated into project workflows from initial concept design through use of BIM-enabled parametric modelling. BIM applications assisted in the development and use of standardised components for structure and building envelope using 3D geometry and property and performance data embedded in the models. DfMA components were coordinated with other disciplines through early clash detection, with design models directly used as a base for fabrication information, reducing time and risk. BIM models were used for 4D construction simulation planning to inform and communicate installation of components on site. This
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