LOCATION
Hollyford Wind Farm Tipperary, Ireland
Client
Denis Moriarty Limited
Product used
StrataGrid™ 150 and 200
Application
StrataSlope® System to increase the bearing capacity
About the project
As the location was set on the side of a steep slope, building a working platform on the edge of the mountain was necessary.
To ensure that the amount of fill material was minimised, a reinforced earth solution was proposed to achieve a steep slope and assist in reducing the overall footprint of the structure. The platform needed to provide sufficient bearing capacity to accommodate construction traffic and heavy lifting equipment needed to construct the 75 m tall turbines. The design surcharge used in the calculation was 45 kN/m2 and a bearing capacity of 200 kPa on the finished surface of the hardstanding equipment needed to construct the 75m tall turbines. The design surcharge used in the calculation was 45 kN/m2 and a bearing capacity of 200 kPa on the finished surface of the hardstanding.
Geosynthetics determined that utilising on-site granular material and a combination of StrataGrid™ 35 kN and 55 kN with 600mm space that the 10m high, 70-degree walls would be viable for the contractor.
The calculation of the reinforced soil wall was performed following the SD8006:2010 for the internal stability and Eurocode EC7 to assess global stability. By introducing the reinforced earth solution, we reduced the overall height of the structure significantly from approx. 30m to a more realistic 10m. This allowed the contractor to deliver the scheme quickly and within budget.
Strata offered the best solution at the best price.
CONSULTATION From know-how to manufacture, installation |
