Environmental work, Dams, Reservoirs and Rivers
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Shore Protection work is undertaken wherever ground is being eroded from boat wash, flooding, waves etc. and consists of rip rap type pitched stones laid to protect river banks, lake shores etc. A geotextile layer is generally placed behind the stones to prevent the fines being washed out. |
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| Construction of masonry wall at bottom of spillway | Construction of fishpass as a bypass to the spillway |
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Shore Protection work is undertaken wherever ground is being eroded from boat wash, flooding, waves etc. and consists of rip rap type pitched stones laid to protect river banks, lake shores etc. A geotextile layer is generally placed behind the stones to prevent the fines being washed out.
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LMC were contracted by National Trust to investigate the leakage of Yew Tree Tarn Dam. A v-notch had been installed to measure the extent of the leak but was found inadequate to measure the volume actually leaking. LMC carried out a Site investigation, installed a Flow Measuring device and carried out a diving survey. The dam was found to contain no clay core but was relying on the masonry wall. The mortar of which was in a poor condition particularly around the base of the wall and around the penstock, and was leaking at about 100m3/hr. LMC then proposed a remedial repair and once NT had funding carried out the work in Summer ‘04.