News & Media
June 20, 2019

Small UK flood job excels

Small UK flood job excels

Over 40 houses in Harlow, Essex are now protected from internal flooding during a 1-in-20-year flood event following successful completion of an NEC-procured flood alleviation scheme. The project won the Small Project of the Year award in the 2018 British Construction Industry Awards (BCIA).

Client Essex County Council and its delivery partner Ringway Jacobs engaged contractor Topbond to construct a flood bund and main flood storage area for the scheme under a £400,000 NEC3 Engineering and Construction Contract (ECC) Option C (target contract with activity schedule).

The 150m long, S-shaped flood bund was built from a combination of site-won and imported fill within Kingsmoor playing fields at the foot of rising woodlands south of Harlow. Measuring up to 30m wide and over 2m high, the bund was designed by Ringway Jacobs to attenuate 7500–8000m3 of flood water at peak storage capacity. Nearby properties had experienced significant flooding in recent years from overland flows and overloaded surface-water sewers.

NEC-procured programme

The Kingsmoor bund works were undertaken as part of the NEC-procured Essex Highways programme, a bespoke 10-year framework contract between Essex County Council and Ringway Jacobs. Commenced in 2012, the framework has played a major part in delivering the council’s capital flood alleviation programme, which has seen over £13 million schemes completed to date.

Council project delivery manager Dave Chapman says, ‘We have used ECC Option C on many different projects over the past 4 years and found the NEC target cost arrangement works really well. It gives us the ability to reject or renegotiate prices that we have queried, but it also gives our contractors the confidence of knowing there is a clear and transparent process for supporting and implementing any changes to the NEC works information.’

Early warning benefits

He says the NEC early warning process is also a major benefit. ‘On the Kingsmoor contract, there were early warning notifications for things such as bad weather but also for the fact that some  of the material being excavated from the site was unsuitable for constructing the bund. This enabled the project team to source additional fill material without causing undue delay to delivery.’

He adds that the NEC obligation for parties to work in a ‘spirit of mutual trust and co-operation’ means the council has generally enjoyed collaborative relationships with its contractors. ‘This in turn has led to more efficient delivery on our flood alleviation schemes’.

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