Civil Engineering Within our Civil Engineering Division we have a wealth of experience through our fully trained workforce. All our Site Managers have attended the CITB Site Management Safety Training Scheme (for Building and Civil Engineering Industries), ensuring that Health & Safety is at the forefront of our business. We are partners with Wessex Water, Environment Agency, Bristol City Council, Somerset County Council and Bath & N. E. Somerset Council. Our experience in partnering enables us to work closely with our customers fulfilling their individual requirements. We have successfully completed projects in bridge strengthening, sewage treatment works, pumping stations, highways and sea defence works. Shaftesbury Scheme At Wessex Water’s Shaftesbury STW site, Damar Group were appointed Principal Contractor under CDM Regulations for a £400k project to provide additional Sludge Storage facilities together with various associated works. All elements of the project were undertaken by companies under the Damar Group umbrella. The contract required construction of 2 no. new glass coated steel holding tanks with a ‘domed’ GRP segmental roof, each tank being 9.3metres diameter and 9.5 metres high constructed off of a conical R.C. base. Damar’s ‘Civils Division’ undertook all civil works elements of the project, with the ‘Engineering Division’ being entrusted with erection of the Tanks, a complex pipework manifold to facilitate de-watering, and a common GMS staircase and access platform constructed between the tanks to provide access to roof level for maintenance and inspection. Other elements of the work included a modified Sludge Collection and Pumped Sludge Transfer system with associated underground process pipework. The ‘Engineering Division’ also undertook all Electrical and Control elements of the project. Longbridge Sewage Treatment Works October 2002 saw the start of a fast-track project at Longbridge STW near Ilminster, Somerset, for M.J.Gleeson/ECL. The works involved major upgrading of the existing infrastructure using the MBR, membrane technology process and upon completion, the majority of the existing works became redundant. Damar Group’s Civil Engineering Division were contracted to carried out all civil work elements which included site preparation/demolition of existing structures, 3no. new/refurbished pump stations, R.C. slabs for various mechanical plant items, buried services including gravity sewerage, pumped process pipework, washwater distribution and cable-ways. Core to the whole scheme was a partly buried R.C. tank approximately 16m x 12m x 4m deep with integral external pipework access galleries. Internally, the main tank was divided into 7no. compartments containing the 4no membrane units, with separate flow splitting, sludge reception and permeate collection chambers. ‘External Works’ included new R.C. access roads and footways with associated soft landscaping. Under a separate sub-contract let by the main contractor, design and installation of all above ground/surface mounted pipework was carried out by our steel fabrication division. This included complex ABS and welded stainless steel ‘manifold arrangements’ for the air blowers, permeate draw-off and sludge draw-off, all associated valves included actuators, and purpose made support bracketry. New inlet and screening facilities required provision of several ‘small’ custom built stainless steel ‘tanks’ for flow reception and grit separation. Damar Group’s Engineering Division carried out all mechanical works associated with the pump stations under confined space working conditions including temporary overpumping of incoming flows. All ‘critical path’ elements of the works were completed on programme in April 2003 allowing ‘plant start-up and commissioning. Project Pictures Longbridge Sewage Treatment Works