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Engineered solutions for contaminated land

PAGeoTechnical logo

Engineered solutions for contaminated land

PAGeoTechnical have developed an extensive range of gas protection ventilation products that include voidformers and vent components. When installed as part of a designed gas venting system, they will safely disperse harmful gases to atmosphere.

Under BS8485:2015 it is recommended that all gas protection designs should include provision for some form of sub-floor ventilation. Depending on the site risk this may be a simple pressure relief pathway or demonstrable ventilation with good or very good performance.

PAG offer advice and design appropriate for the gas risk identified including demonstration by calculation for ventilation design performance

passive ground gas control illustration
Geocomposite installation

Voidformers / vent layers

  • 25mm cuspated high density polyethylene
  • High strength and crush resistance
  • Available as fully wrapped or single sided geotextile.

  • 6mm cuspated high density polyethylene
  • High strength and crush resistance
  • Fully wrapped geotextile.

Venting components

PAGeoTechnical  has developed an extensive range of ventilation components that when installed as part of a designed gas venting system will safely disperse harmful gases to atmosphere. All PAG passive gas venting components are supplied with venting calculations to prove their efficiency in line with BS 8485.

The range includes T pipes, bends and couplings, slotted pipes, voidformer outlets, air bricks, periscope vents and many more.

PAG Standard Venting Components

Datasheets and brochures

Venting

pdf

Venting descriptions

Details of venting components available from PAG.

pdf

Vent-to-vent layer detail

 

Typical venting component detail.

 

pdf

V42 HSF

Rectangular vent.

pdf

V41 HSF

Round gully vent.

pdf

V40 vent box

Standard vent box.

pdf

PAG Standard Venting Components

List of PAG venting components.

pdf

PAG 25 Single Wrap

25mm flat topped geocomposite venting layer for passive ventilation under buildings.

pdf

PAG 25 Fully Wrapped

25mm flat topped geocomposite venting layer for passive ventilation under buildings.Fully wrapped for use in discrete strips.

pdf

PAG 6 Fully Wrapped

Fully wrapped geocomopsite drain for pressure relief designs underneath buildings.

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