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This major flood alleviation project was delivered on behalf of East Riding of Yorkshire Council, procured via the YORcivils Framework.
The scheme was required to address flood risk to over 4,000 properties located in Cottingham and Orchard Park, following an event in 2007 which saw thousands of homes and businesses damaged as a result of a significant flood event.
A total of 8 water attenuation lagoons, inlet & outlet structures and associated works were constructed, creating vital large-scale rainwater runoff storage. The lagoons resemble formalised grazing areas, remaining dry most of the time and only filling during severe wet weather.
They have capacity to store 300,000m3 of flood water (the equivalent of 120 Olympic-sized swimming pools). The lagoons have been linked together by culverts allowing the water to flow from one reservoir to the next in a cascading fashion.
Significant earthworks were undertaken with the majority of materials being re-used on the site.
On behalf of Scarborough Borough Council, crucial flood alleviation and public realm works were completed at Church Street, Whitby.
The scheme comprised the construction of a 300m L-shaped concrete floodwall along Church Street, parallel to the River Esk.
Property level protection works were undertaken at a local public house, including flood gate and air bricks.
Public realm works included the demolition and construction of replacement summer houses located within the Merchant Seamen’s Hospital Gardens.
At Bridlington Harbour, works were undertaken to reinforce the existing pier. The scheme involved the installation of a 200m length of interlocking steel piles and concrete capping beam to the pier and marine parade sea wall.
Necessary upgrade works were completed to the existing pier in order to improve stability and access for fishing and sailing boats.
Aesthetical improvements were also made to compliment the natural beauty of the surrounding area.
The coastline was subjected to severe adverse weather which resulted in Sunderland's coastal defence sustaining damage. Several schemes were completed to improve the integrity.
This included; ground investigation works and marine surveys of the existing North Pier, recovery of South Pier coping stones, removal and replacement of concrete slabs and wall repairs.
The most severe damage occurred at North Pier whereby 35m of the masonry was breached, resulting in erosion of the rubble infill and loss of approximately 20m of pier. Essential repair works were completed and approximately 2500t of rock armour was placed in total.
The coping stones at the New South Pier were dislodged during the storm. These were recovered from the sea bed and stored until the works were completed to reposition and fix them back into place.
Metal and timber repair works were undertaken to the No.1 Dock Gate which was damaged during the storm, including repairs to the locking mechanisms and hydraulic operating systems.
The crash framework to the top of gate was reinstalled and dock gate rigorously tested. Historical drawings were used to assist with repair and fabrication of new parts.
Due to the emergency nature of the works, each design was value engineered to ensure the best value would be attained.
Filey Flood Alleviation Scheme is vital project which will protect 739 homes and non-residential properties in the Yorkshire coast town of Filey from flooding. Delivered by Esh’s civil engineering division, a series of earth embankments, ditches, and temporary flood storage areas will be constructed at different locations around the edge of Filey.
Together with new drainage channels and culverts, the storage areas are designed to catch the flows of water from surrounding land during extreme rainfall before they reach the town. The flood water will be temporarily stored before being released at a controlled rate into the existing urban drainage system and ravines once a storm has passed.
An established public footpath will be installed and the surrounding land will be rotavated and wildflower seeded to enhance the land around the flood storage areas.
Filey has a history of surface water flooding, with records of properties flooding dating back to 1985 and most recently the major flood event in the summer of 2007. As well as homes and businesses, the scheme will also help to protect Filey’s only secondary school, the Scarborough to Hull railway line, which is routed via Filey, and the town’s two access roads.
This multi award-winning scheme comprised the construction of coastal defence works at Runswick Bay where the coastline and its surrounding area consist of unstable cliffs, which are susceptible to landslides.
The works included concrete repairs to 2 existing sea walls and the protection of the sea walls through the placement of 10,000 tonnes of rock armour along the bay.
The high-density Norwegian granite, each weighing between 8 and 10 tonnes, was delivered to the beach via barge and placed using 50t excavators and dump trucks.
The rock armour profile was examined to ensure that the wave energy was sufficiently reduced to limit the impacts on the existing sea wall.
Reinforced concrete steps were constructed through the rock armour to enable access to the beach. Artificial rock pools were also created to replace habitat lost and encourage sea life back into the area. The rock pools were created by drill coring into the granite to provide valuable habitat.
The newly constructed scheme offers 100 years of better protection to 96 residential and 17 non-residential properties that were predicted to be lost should the sea wall fail, of these properties 6 are listed structures.
Delivered on behalf of Durham County Council, and in partnership with the Environment Agency, the Chester-le-Street flood prevention scheme was essential to prevent a long history of flooding within the town.
The development comprised the re-opening of an existing 87m culvert channel located underneath a busy market place. Works included; the construction of a 25m long Rootlok wall along the edge of the river, formation of headwalls and a 20m long extension to an existing flood wall.
To accommodate the relocation of the market place, public realm works comprised lifting and re-paving the red carpet area, the addition of new street furniture, planters, soft landscaping and footpath widening.
The scheme consisted of coastal protection works to reduce the risk of flooding due to deterioration of the existing defences.
Works included rock armour protection, repairs to Skinningrove jetty and associated works in a tidal environment.
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