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InteriorInterior
ACO Climate Tunnel
Description

Protection systems for amphibians and small animals have to satisfy a range of different criteria, balancing road-building requirements with wildlife conservation needs.

ACO polymer concrete climate entrance units regulate moisture in two different ways: via climate openings at the road edge and via climate plates with drainage holes on the tunnel floor. Rainfall immediately penetrates the sensitive entrance area, ensuring the required air humidity and quickly adjusting to the ambient temperature. In periods of drought, the system benefits from direct connection to the ground moisture via the slotted climate plates.

ACO polymer concrete properties are favourable to amphibians and other small animals. Because the water penetration depth is zero, not only are components durable, animals will also normally be walking on materials which have a moist non-abrasive surface. Polymer concrete also contains no metal reinforcement, meaning that amphibians won’t be disorientated.

Key Features
  • Slotted upper surface allows airflow in and out of the tunnel to ensure climatic conditions remain constant
  • Efficient — road closures during installation are minimal as units fit flush to the road surface and low profile (520mm) depth minimises excavation requirements
  • Polymer concrete tunnel sections are resistant to the freeze-thaw and its smooth surface also ensures that the amphibians can pass safely through the tunnel with no risk of injury
Scope of Use
  • Roads close to water 
  • Areas prone to high groundwater levels 
In-Service History

First installations back in 1987 in the UK and 1989 in the US. 

Documents
Amphibian Wall Spec Sheet
Climate Tunnel Spec Sheet
Fencing System Spec Sheet
KT500 Tunnel Spec Sheet

ACO are a world market leader in drainage technology with innovative solutions to new environmental conditions.

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