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| Product |
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Reinforced Soil |
| Client |
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HA & BAA |
| Contractor |
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May Gurney |
| Project |
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Soil Nail Facing - M11 / Stanstead Airport Slip Roads, Stanstead, Essex |
| Wall Height |
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New dedicated slip roads into Stanstead Airport have been created from the M11 by the design, supply and construction of Soil Nailed slopes. The
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| site geology consisted of a thin layer of Terrace Gravels over London Clay, which lent itself to the use of the soil nailing technique of slope stabilisation. The Client required a vegetated finish to the soil nailed face with slope angles varying between 26° to 55°, and an adequate thickness of topsoil had to be provided to enable vegetation to successfully establish. |
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For the steep slopes, 35-60° a geosynthetic 100mm deep, 100mm dia. cellular matting was installed to provide full depth support to the topsoil. For the shallow slopes <35° where the topsoil is relatively self supporting, a geosynthetic erosion control matting was pinned to the slope. Upon completion the face was grass Hydroseeded.
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