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  • Project - Shellachan Earth/Rockfill Dam
  • Project - Glenfeochan Dam
  • Areas of Expertise
  • Project - Slurry Tanks
  • Project - Glencruiten Earth Dam
  • Environmental Engineering

  • Project - Earth Dams
  • Project - Barmore Dam
  • Project - Constructing a Lake
  • Project - Forestry Flood Alleviation
  • Project - Low-cost River Crossing
  • Project - Reed Bed Construction
  • Solar Energy
  • Wind Energy
  • Small Scale Hydro Power
  • Coignafearn Hydro Power Scheme
  • Heat Pumps
  • River Training and Flood Control
  • Areas of Expertise

    • CONCRETE RECYCLING PLANT
    • RIVER AND FLOOD CONTROL
    • WATER SUPPLIES
    • REED BEDS
    • LAND DRAINAGE
    • DAMS
    • WATER RESOURCE PLANNING
    • SOLAR & WIND ENERGY
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    Slurry Tanks

    Cement Slurry Tanks

    Design and construction of slurry tanks for a concrete batching plant. These enabled the separation and re-use of cement slurry, sand, gravel and water from waste concrete, transit mixers and yard washings.

    Economic savings in water use and concrete raw materials, together with a reduced risk of environmental pollution, were the result.
     
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    Glencruiten Earth Dam

    Construction of an earth dam with geosynthetic clay membrane, to create a lake for environmental enhancement.

    Glencruiten Dam Glencruiten Dam
    Glencruiten Dam Glencruiten Dam

     
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    Earth Dams

    Earth Dam Under Construction

    An earth dam under construction in the Scottish Highlands to regulate farm water supplies affected by forestry development.

    Adrian Laycock Ltd has carried out investigations, design, and construction supervision for a number of small dams for flood control, farm and domestic water supply, micro hydropower schemes, and amenity purposes.
     
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    Shellachan Dam, Argyll, Scotland

    Shellachan Dam

    Rehabilitation of an old earth/rockfill dam using synthetic membranes. The old dam leaked and was in danger of collapse. Rehabilitation included reconstructing the embankment, sealing with Nicoflex membrane and bentonite, and installing a 200mm diameter PE outlet pipe. The work was completed in a week.
    Shellachan Dam under construction Shellachan Dam completed

     
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    Glenfeochan Dam, Argyll, Scotland

    Glenfeochan Dam Glenfeochan Dam

     
    Glenfeochan Dam was constructed in 2002, turning a midge-infested Argyll bog into a beautiful lake.

    Glenfeochan Dam
    Glenfeochan Dam starts filling.

    Glenfeochan Dam Glenfeochan Dam
     
    The dam and lake from the air, and the spillway in operation.
     
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    Barmore Dam, Argyll, Scotland

    Barmore Dam Barmore Dam
    Barmore Dam Barmore Dam
     
    Barmore Dam in the Scottish Highlands is being constructed across a deep peat bog. This calls for some careful machine work and some innovative engineering, aided by the use of geogrid for soil reinforcement in the embankment. Pictures illustrate the dam through construction to completion.

     
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    Constructing a Small Lake, Argyll, Scotland

    Constructing a Small Lake Constructing a Small Lake
    Constructing a Small Lake Constructing a Small Lake
    Constructing a Small Lake
     
    Pictures show the construction of a small lake in Argyll, Scotland. After stripping the peat (top left), the main dam is formed with a clay core and peat shoulders. A sedimentation pond (top right) traps mud and silt from the excavation works to prevent contamination for downstream users. The picture at the bottom left shows the clay core, and the one bottom right shows the completed project.

     
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    Forestry Flood Alleviation

    Flood Alleviation Channel

    Forestry planting has had serious effects on the flow regimes and water quality of some Scottish rivers. Adrian Laycock Ltd has carried out a number of Hydrological studies into the effects of forestry planting, and has designed appropriate flood alleviation measures.
     

     
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    Low-cost River Crossing

    Low-cost river crossing Low-cost river crossing
     

    A low-cost road crossing over a highland river. The structure is designed to submerge in heavy floods.
     
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    Reed Bed Construction

    Reed Bed Construction Reed Bed Construction
     

    Reed beds are an environmentally sound means of purifying effluent from septic tanks or industrial, agricultural or domestic sewage. The beds shown under construction above, are for treating a million gallons per year of farmyard slurry from a livestock market in the West of Scotland. The options for disposal of waste were very restricted due to the absence of any filtering soils. The three stage vertical flow installation is constructed floating on peat and supported by geotextile. The picture below right shows the reed beds one year after construction.

    Reed Bed Construction Reed Bed after 1 year
     

    Reed beds under construction for a private house are shown below. They provide secondary treatment of sewage by taking effluent from a septic tank and passing it through a two-stage vertical flow process. With this form of construction they can be made to any shape.

    Reed Bed Construction Reed Bed Construction
     
    A reedbed in an urban setting treating rainfall runoff from a main road Left: A reed bed in an urban setting treating rainfall runoff from a main road.
          Below: Construction of a domestic reed bed in Argyll.
     
    Reed Bed Construction in Argyll Reed Bed Construction in Argyll
     

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    Solar Energy

    The utilisation of Solar energy is incorporated into all buildings designed by us. Warm air from beneath the roofing slates is circulated into the building using solar powered fans, and warm water from solar collector panels is used for underfloor heating and as a base for domestic hot water. Contrary to conventional wisdom, Scotland offers great potential for economic savings using solar, since there is normally a high heating load coinciding with high insolation during spring and autumn. Every building should incorporate solar energy systems.

    Solar panel installation Solar panel installation
     

    Installing solar collectors in the Scottish Highlands. Solar panel installation
     
     
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    Wind Energy

    Helicopter transport Constructing foundations
    Using a helicopter to install wind turbine foundations in the Scottish Highlands. 
     
     
     
    Below: The completed wind turbine.
    Small wind turbines producing up to 6 kilowatts are becoming increasingly popular in remote areas such as the Scottish Highlands. We are involved in several projects which will utilise wind as an adjunct to solar energy.
    Constructing foundations
     
     
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    Small Scale Hydro Power

    We are actively engaged in the design and construction of several hydropower schemes in the scottish highlands. These projects are in environmentally sensitive areas and require extreme care in design and construction. This access road to a remote damsite is skillfully constructed to prevent soil erosion and to blend in with the surrounding terrain.

    We can carry out initial appraisals very rapidly, to assess the potential power yield of small rivers and streams. If a realistic potential is identified, the follow-up process involves environmental and hydrological studies, economic analysis and engineering design of dams, pipelines and associated structures.

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    Dam site access road Head pond prior to sealing
    Site investigations at a small hydro damsite Balancing dam under construction
    Penstock pipes awaiting installation Damsite access road

     
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    Coignafearn Hydro Power Scheme

    Coignafearn Hydro Power Scheme under construction in the Scottish Highlands.

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    Underground heat pump building Intake works under construction
    Core at full height, rock in downstream shell Core filling in earth-rockfill dam
    Concreting intake structure Hauling pipeline
    Installing pipelines for scour and main penstock Backfilling main penstock pipe
     
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    Heat Pumps

    Drilling for ground sourced heat pumps

    Heat pumps are becoming an accepted method of reducing energy costs, and we have incorporated ground-sourced heat pumps into the design of houses and hydro power schemes.

    (mouseover picture for image caption)


     
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    River Training and Flood Control

    River bank strengthening, channel improvements and flood control measures have to be sensitively designed and carefully carried out to minimise disruption to sensitive environments.

    (mouseover pictures for image captions)

    Rock spurs for bank stabilisation A Scottish river needing careful management
    Flash flood Flash flood
    River improvement studies River training with rock armouring

     

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    © Adrian Laycock Ltd 2000. Fair use and distribution of this material is encouraged provided proper citation is given.