CONSTRUCTION PROCUREMENT CAT 0
Design strategy
Construction elements – CAT 1 to 6 (Gross Capital Cost) Offsite value
On-site elements (prelims, labour etc)
Profit and risk
CAT 7
Construction strategy
Figure 3: A core part of the Toolkit is the calculation of the project Pre-Manufactured Value (PMV) or Pre-Manufactured Cost (PMC).
This process will help bridge the gap from client priorities to MMC typologies; if the answer is ‘yes’, faster delivery may indicate that consideration be given to greater use of standardised offsite products. This ‘Benefits assessment’ element may be further expanded over time to embed the Construction Innovation Hub Value Toolkit, and be reassessed at each project stage.
Constraints assessment The type of healthcare building, site location, local or national policy, or local environmental conditions, may constrain or influence the MMC approaches for a given site. An outline Constraints Assessment form (see Table 2) is provided within the Toolkit, with a series of prompts, to allow the project team to assess project constraints. This list is not intended to be exhaustive, but is a ‘conversation starter’ to ensure that project teams have considered what impact the site may have on the MMC solution. Through this assessment we can ask
questions such as ‘Does the project have specific site constraints limiting the size of components – i.e. is it a ‘constrained site?’ Again, this process bridges the gap between the designers, contractors,
and suppliers; if the answer is ‘yes’, a constrained site may limit the forms of offsite components.
CAT 0 assessment The Toolkit includes a qualitative assessment (see Table 3) of the Category 0 interventions proposed for a project. This includes a range of predetermined metrics seen as ‘good practice’ by the P23 Contractor group, cutting across project briefing, shell and core design, room fit-out design, stakeholder engagement, Building Information Management (BIM), and pre-construction activities. Further site-specific metrics may be added as required. The metrics embrace the role that digital design plays in facilitating the right design solution. The assessment provides increased scores under shell and core and room-fit-out design for greater levels of standardisation, acknowledging that this will underpin future deployment of MMC forms.
Under BIM, emphasis is placed on ensuring that the right documentation is in place, and that greater use of data is being employed. There is a focus on briefing, considering the ‘digital twin’ aspirations that may form part of future asset management. As standardisation is a key part of successful deployment of MMC, the expectation is that the trend will show greater deployment of MMC through higher Category 0 scores, as seen in other sectors (such as education).
CAT 7 assessment Similar to Category 0, the Category 7 tool (see Table 4) logs potential interventions to improve onsite practices. This includes predetermined metrics such as the approach to construction delivery, temporary works, and asset and productivity tracking and commissioning. Again, site-specific innovations can be included to enhance the score. This assessment is best completed
Table 4: The Category 7 tool logs potential interventions to improve on-site practices. This includes predetermined metrics such as the approach to construction delivery, temporary works, asset and productivity tracking, and commissioning.
in collaboration with future suppliers. However, for the early stages of a project, the assessment will set the aspirations for the future construction activities. Completing this assessment during the SOC or OBC stages will inform contractor partners, if not already employed, of the aspirations of the client and consultant team, similar to well-known environmental assessment methods such as BREEAM, WELL, and LEAD.
Pre-Manufactured Value A core part of the Toolkit is the calculation of the project Pre-Manufactured-Value (PMV), or Pre-Manufactured-Cost (PMC) (see Figure 3). This metric is central to developing the cost-based quantity of offsite construction within a project. It is the measure in proportion to the cost of offsite works within a given package, compared with the gross capital cost of that package.
Although seen as too simplistic by
some, PMV is a widely used metric in the UK construction industry to measure the quantity of offsite elements within a project. It has thus been adopted with guidance around a standardised approach to quantification. A focus is on the consistency of the calculations completed for healthcare projects, to enable the collation and assessment of the data provided during business case submissions to NHSE. The PMV part of the Toolkit has
adopted the Building Cost Information Service (BCIS) categories widely used in the development of cost plans in England. However, this has been expanded to include further healthcare specific sub-sets to aid completion (if required). These have been divided into structural, architectural, and building services categories to enable successful
Figure 4: An Executive Summary is provided at the start of the Toolkit.
June 2023 Health Estate Journal 33
P23 MMC
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