CASE STUDIES

PAR & ST BLAZEY FLOOD DEFENCE SCHEME

The team have recently completed installing 380 metres of Coir Pallets on the river edge at the Par & St. Blazey Flood Alleviation Scheme. The Coir material are pre-planted mats which are pinned with long wooden pegs to the river edge to prevent erosion. 
As they are pre-planted they give an instant effect, as the photos show. 

LEAN QUARRY WASTE TRANSFER

Another scheme completed by the bespoke contracting team. This time concrete wall repairs then the fabrication & installation of steep push plates & greedy boards at the Lean Quarry Waste Transfer Station for Viridor (now Biffa). Thanks to the Biffa team who were great to work with & couldn’t be more helpful. 

FLOOD RELIEF - EXMOUTH TIDAL DEFENCE SCHEME

WH Bond recently completed works to the Tidal Defence Scheme in Exmouth, a £12million project to improve flood defences in the town, which has a long history of tidal-flooding. The worst recorded incident of flooding was in 1960 when Exmouth flooded twice and over 1,000 homes were affected. Now the new defences will reduce the risk of tidal flooding to over 1,400 residential and 400 commercial properties.

Split into three phases, WH Bond were responsible for Area 3 – The Esplanade, where the proposed works stretched along the sea front, from Mamhead slipway in the west, to between the clock tower and Premier Inn to the east, including the Alexander Terrace junction. Working in collaboration with main contractor Kier, the Environment Agency and East Devon District Council, WH Bond completed the scheme in July 2021.

The overall project included works to the existing seawall, the lower sea wall walkway, strengthening and improving its’ ability to hold the waves back which were carried out by Kier. A new dedicated drainage system for the scheme was installed on the landward side of the Esplanade, which in the past was struggling to cope with the increased volume of water. Now cascading water from waves crashing over the seawall, drain back out to sea, stopping flooding to the existing main sewer system on the highways.

To further reduce excessive sea water flooding the town, as waves crash over the sea wall, a floodgate system was installed by WH Bond.  New reinforced concrete foundations were installed, that now carry a system of new flood gates which can be deployed either electrically or manually and stop the increased volume of water ‘rushing’ up the road network, into the town, and affecting residential and commercial properties.

WH Bond commenced the works in Area 3 on 4th January 2021 and the phase was completed in July 2021, and the people of Exmouth can now keep their feet dry as the winter approaches.

HELSTON FLOOD ALLEVIATION SCHEME - SUSTAINABLE OUTCOME

In February 2020 our bespoke contracting team commenced a complex flood alleviation scheme for Kier Integrated Services / Environment Agency on the river Cober in Helston, which would draw upon the specialist skills of our bespoke contracting division

Constructing a retaining wall across 20 private gardens and forming a large earth bund through a further 10 gardens, the location made the project sensitive. The project required a specialist contractor that could complete all elements of the project, including, demolishing existing structures, erecting scaffolding in the river Cober to access the river edge, excavating and casting the RC foundations and building the Stepoc walls, as well as casting the bespoke coping stones as the size was irregular.
The northern section of the scheme called for the construction of 330 linear metres of  flood banks, requiring the importing of five thousand tonnes of primary (virgin) aggregates to use as a fill material. Using a CEEQUAL calculation, an evidence-based sustainability assessment tool, the distance to suitable material sources meant significant HGV movements would impact air quality and carbon levels. Following extensive research, an alternative solution was found at a local development site, where 5,000t of excavated material was waiting for disposal. Following rigorous testing, the soils from this single site were deemed suitable for the works required.
Fences and gates were erected to cordon off the bank and then the scheme was totally re-reinstated to return the landscaping of the area to its former condition.  Working closely with the Environment Agency enormous care was taken to ensure no spoil material entered the watercourse throughout the entire 9-month project for fear of polluting the river.

The project was completed successfully and is a lasting testimony to the ability of WH Bond to take on complex and sensitive schemes, whilst working sustainably.

FORDER VALLEY, PLYMOUTH

Our works started in  January 2019 to carry out enabling works in preparation for the main site clearance for Balfour Beatty at Forder Valley Plymouth. A laydown area was constructed adjoining the main road, under Traffic Management, which would enable us to set up our site & deliver all plant equipment for Phase 1. A river was flumed & the silt prevention fencing was erected alongside all watercourses ahead of plant movements, 750 metres of Heras was erected & all overhead lines had the relevant control measures constructed.

In February the tree & vegetation commenced. All works have been carried out under a watching brief from a number of Ecologists & due to the presence of Birds, Badgers, Bats & Reptiles methods such as soft felling, hand cutting of vegetation & grass & erection of Bat Boxes have been carried out.

The team, of up to 16, worked  successfully for seven days to ensure trees were removed before the Birds began nesting. 

We have erected 2500 metres of site fencing & another 1000 metres of fencing to act as temporary Bat corridors; the fence panels are covered with green netting, dead hedging & Willow to give the Bats flight lines within previously cleared sections.

All cleared material has been recycled with the wood being processed for firewood & all wood chip used for bedding for livestock on local farms.

BESPOKE CONTRACTING

Tree Clearance, Enabling Works, Fencing & Earthworks

Our experienced team work on bespoke commercial & residential projects throughout the South West.  Our small highly skilled team are able to offer tree clearance, enabling works, fencing and earthworks for bespoke projects throughout the South West. Some of examples of work carried out are detailed below.