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    Customer

    Portland Port

    Location

    Portland, Dorset

    Value

    £6m combined value

    Portland Port has invested £25m in a new deep water berth so it could simultaneously accommodate two 350m long cruise ships. Knights Brown was appointed as managing contractor responsible for bringing the project in on time and budget.

    The original deep water berth (DWB) was removed and replaced with a brand new, extended berth. The development has also seen a 74m extension to the solid quay face of the current primary cruise berth, the Outer Coaling Pier. Overall, the project created 16,000m2 of additional quayside space and enabled two 350m cruise ships to moor alongside simultaneously.

    Knights Brown was awarded the role of managing contractor (£2.6m) and also trade contracts (£3.4m) for the anchor wall, tie rods, walings and capping beam packages.

    The 430m long quay wall is constructed from 1.4m diameter, 24m long tubular steel piles with a AZ20-700 sheet piles between the tubes. Each tubular pile is anchored with 32m long tie rods back to a sheet pile anchor wall. 400,000t of material was required to fill this area up to pavement level.

    25T precast concrete units were installed on top of the piles to act as permanent formwork for the in-situ capping beam. Surfacing that was due to be completed in a second phase was brought forward, allowing the port much fuller utilisation of its new berths during the 2023 cruise season.

    The project, valued at £25m, was completed between October 2022 and April 2023.

    A unique form of contract was adopted, which relied on collaboration between all parties to deliver the works. As originally tendered, the project was beyond the port’s available budget. Through workshops with the client’s team, Knights Brown collectively agreed a way forward in which the port carried many of the major project risks and procured the high value materials and subcontract packages.

    Through our role as managing contractor, we adopted mitigation measures to minimise the port’s exposure. These collective measures allowed the project to be brought in line with the budgetary requirements without compromising the scope.

    our sectors

    Airports
    Buildings
    Coasts, Rivers & Ports
    Defence
    Energy
    Infra & Public Realm
    Waste
    Water

    Knights Brown was a great client to deal with. We felt from the very outset that they worked with us rather than for us, demonstrating real collaboration in order to minimise disruption to the port. The works were also delivered through a very challenging time, with the latter stages coinciding with the COVID-19 pandemic. Their approach to this was thoroughly professional, with health and safety the primary consideration. Working practices were strictly amended and monitored, with the project completed to the satisfaction of all involved.

    - Anisa Koci Port Master Plan Project Manager at Portsmouth International Port

    This complex and challenging project was a collaborative undertaking from the outset. Combining two projects was inspirational, saving not only money but diverting 22,000m3 from landfill. Some extremely innovative tools and methods were used to demolish the pier, recover material and to achieve the lowest environmental impact on one of the most environmentally designated places in the UK.

    - London and South East Constructing Excellence Awards judging panel on Phase 2 of the North Portsea Island CFERM

    Malcolm & I would like to thank yourself and Guy for working with us and our design team in delivering a superb finished product for FloPlast that we are very proud of and which has been much admired by our customers on site visits.  So far so good, we are finding our operational feet on the site and it all appears to be working well.

    - Bryan Lynch, Floplast