PAGeoTechnical’s active gas protection systems utilise combinations of barriers, fans and vents to maintain a safe environment below buildings.
Active gas protection
Industrial and commercial units, as well as public buildings, are eminently suitable for the installation of active gas protection systems. They are typically larger, (BS8485 type D), or have more complicated subfloor structures, and are generally “managed”. This allows the advantages of active systems – both technical and commercial – to be utilised.
Active systems utilise electromechanical means of enhancing the ventilation system either running constantly or via a switched system.
Clean Air Blanket (CAB)
Designed for low to medium risk sites, CAB is often the most cost effective solution for gas protection for industrial or commercial buildings. Utilising the standard damp proofing of the building and offering combined ventilation and barrier, CAB has probably the least impact on construction of any gas protection system and therefore offers construction as well as commercial advantage with provable performance.
- Risers and cowls not required
- Constant performance
- Based on provable facts
Passive assisted CAB
Air is introduced and the void former ensures consistent flow irrespective of building size or complexity. In the event of power failure a passive relief system operates to allow pressure relief and limited passive ventilation.
- Constant performance irrespective of wind speed.
- Dilution/dispersion based on air changes.
- Single geosynthetic barrier component.
- Provable via probe system.
- Cost effective w.r.t. well designed passive system.
Datasheets and brochures
Reinforced gas resistant membrane with aluminium core for max resistance to passage of ground gas and vapours.
High-tech co-extruded multi-layer membrane with EVOH core for optimal resistance to passage of organic vapours, and good biaxial properties.
Robust 0.8mm reinforced aluminium foil gas resistant membrane for use in tough conditions such as beneath reinforced ground bearing slabs.