Alpha Flow Permeable Block Paving

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Brett Alpha Flow is a surface tumbled, permeable concrete block paving unit. With the appearance of a traditional aged pavement coupled with excellent permeability for achieving SuDS and surface water drainage considerations. The blocks feature an innovative interlocking spacer nib, creating a pavement with a permeability of 3386 mm/h whilst providing a structural interlock.

Sizes - 60 mm thickness

  • 105 x140 mm
  • 140 x140 mm
  • 210 x140 mm

Sizes - 80 mm thickness

  • 105x140 mm
  • 140x140 mm
  • 210x140 mm

Colours

  • Autumn Gold
  • Brindle
  • Charcoal

Other Information

  • Alpha – Offering the same aesthetics in an impermeable format
  • Complementary Alpha kerb units available

Alpha Flow is manufactured in accordance with BS EN 1338: 2003.

Alpha Flow is suitable for both pedestrian and vehicular applications when designed and installed in accordance with the BS7533 suite of standards.

Platform Compatible Version Certified to
IFC IFC 2X3 5 1.3
Revit Revit 2016 + 6 2.0

  • Properties and values
  • More information
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Properties and values

COBie
NBS_General
NBS_Data
Accessories
Permeable Chippings
ColourOptions
Autumn Gold (AG), Brindle (BR), Charcoal (CL)
EnvironmentalProductDeclaration
n/a
FinishOptions
n/a
PaverTolerancesOnDiagonals
Thickness: ±3 mm; Plan size: ±2 mm
Permeability
3386 mm/h
PhysicalPropertiesAbrasionResistance
Class 4
PhysicalPropertiesProfileArrises
Tumbled
PhysicalPropertiesProfileInterlockingFeatures
Nibs
PhysicalPropertiesProfilePaverType
Regular plan form
PhysicalPropertiesRecycledContentMinimum
Up to 10%, depending on site of manufacture
PhysicalPropertiesSkidResistance
USRV: ≥55 - Low
PhysicalPropertiesSlipResistance
USRV: ≥55 - Low
PhysicalPropertiesWeatheringResistance
Class 3
TensileStength
≥3.6 MPa
Pset_SlabCommon

More information

  • NBS specification data
    Case studies and technical literature
  • More BIM objects

    What's Changed?

    8/06/2018

    Object upgraded to NBS BIM Object Standard v2.0.

    10/02/2017