28 May 2019
Sponsored by Heathrow Limited
*** HIGHLY COMMENDED *** The Robert Clack School - submitted by Mid Group
On the Robert Clack School project, the Mid Group were approached by the Client when the original procurement fell over, as tenders were around £12m over the original £35m budget. Following a 6-month review, undertaken fully in partnership with their supply chain, the Mid Group and its partners, reduced the costs from £47m to £36m, which enabled the project to proceed. Through adopting intelligent design that integrated with offsite solutions, Mid Group were able to shave 12 months off the original construction programme, greatly assisting in the savings.
Mid Group used an offsite solution to ensure the new buildings were available for the increase in pupils at the school for the start of term and to hit the budget requirements.
The use of many different offsite solutions on the Lymington site has significantly contributed to hitting the budget. The 3 different structural solutions, running at the same time, has resulted in around 7 months of programme saving alone - as 3 different frame contractors are erecting on site simultaneously. Eliminating time on site saves significant sums on prelims - around £4.5m on this project alone.
The standardisation of design to suit offsite has also reduced time and cost. For example, across the concrete frame for the secondary school, there is only one column type. This allows the economic pre-fabrication of precast concrete columns, both reducing time and cost. The pursuit of simplification has been relentless across various areas to save time and money.
In more detail
With a contract award date in December 2017, there was less than 8 months available to design and build the first phase of the new school, as pupils were arriving in September 2018. The 2nd phase started in May 2018 and completed in December 2018. The use of a hybrid offsite solution meant that the Mid Group were able to confidently and contractually state that they would both deliver the school in time for opening and to the standard of the employer’s requirements, having successfully previously used it on a prior project, Greatfields School.
The project involved construction works across 3 different campuses and involved the following works on each:
The works are across c.16,000m2 of new build space and c.3,000m2 of refurbished space.
The prelims were originally c.17% of £47m, which reduced to c.10% of £35m through the adoption of an offsite approach. This saved c.£4.5m in preliminary costs alone, with reductions in both durations on site of staff and plant, and a reduction in the number of people on site, further reducing the temporary accommodation costs, for example.
Using three different offsite solutions, they ensured that the best value solution was used for different parts of the project. This could only be done with the partners working together.
During the 6-month review of the project, Mid Group had three different frame contractors working together on the design development of the Lymington Fields campus.
The different approaches ensured the most cost and time efficient solution was used on each element of the works. Also, as the frame had been built, Mid Group had three different frame systems working at the same time on site, with the 3 buildings built at the same time, resulting in the frames being complete and water tight in a third of the time that the tradition tenders estimated.
Mid Group was established to realise all the benefits of offsite construction. They believe their results and their annualised growth of c.350% per annum over the last three years demonstrates that offsite construction has a place within the industry.
For more details:
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The SECBE 2019 Offsite Award is sponsored by Heathrow Limited.