Beer Wall Flood Alleviation
Form of Contract: NEC 3 Option B
Dates: July 2016 – November 2016
Duration: 16 weeks
- Flood alleviation and mitigation works
- Improvements to drainage capacity
- Earthworks and construction of a haul road to accommodate a long reach excavator
Project scope During the winter of 2013/14 Othery in Somerset was severely flooded. MJ Church working for Skanska and the Environment Agency were contracted to enhance the capacity of water-flow and aid the passage of floodwater in the local river and rhyne network.
Works included the construction of field accesses and a 400m haul road between the proposed diverted channels to allow for the excavation and removal of soils during the construction. The haul road was constructed as a base for the long reach excavator, used to cut the new channel through the peat. The haul road was designed in-house and constructed to withstand the weight and size of the 40 tonne long reach excavator in the soft local ground conditions.
In the location of the proposed channels, the levels were reduced to 2m OD, (Ordnance Datum) where the channel side walls were graded at a gradient of 1 in 3. Using our in-house fleet of lorries, we disposed of the excavated material off site. Some selected and approved excavated material, in addition to imported aggregate, was used as backfill to parts of the Rhine and River.