Alpha Flow Permeable Block Paving
Verified by manufacturer 4 months ago
80 mm Single size packs
80 mm Single size packs
Brett Alpha Flow is a surface-tumbled, permeable concrete block paving unit. Has the appearance of traditional aged pavement, and permeability for achieving SuDS and surface water drainage.
Application
Block paving unit with permeability for achieving SuDS and surface water drainage.
Domestic and commercial use; hardstanding for vehicular and pedestrian pavements including footpaths, cycle tracks, driveways,
adoptable highways, commercial pavements, roof top and balcony applications.
Installation standard: BS 7533-3:2005 + A1:2009.
Description
Permeable paving block available in three sizes specifically designed to create the appearance of a traditional aged pavement whilst the interlocking nib design provides enhanced permeability rates for use within Sustainable Drainage Systems.
Alpha Flow blocks come with a number of matching products including circle packs and kerbs as well as an impermeable option suitable for both hand or machine lay installation.
When tested to BS DD 229: 1996 for Surface Permeability, Alpha Flow achieved 3386 mm/h.
Standards:
Brett Landscaping operate a number of independently audited management systems:
- BS EN ISO 9001: 2008 Quality Management System.
- BS EN ISO 14001: 2004 Environmental Management System.
- OHSAS 18001: 2007 Health and Safety Management System.
- BES 6001 Responsible Sourcing of Construction Products.
General information
Color | Gold Brown Black |
Finish | Textured |
Material | Concrete |
Shape | Rectangle |
Length | 105 mm 140 mm 210 mm |
Width | 140 mm |
Height | 60 mm 80 mm |
Uniclass | |
CAWS | Q24/115 Permeable concrete block paving – total infiltration Q24/117 Permeable concrete block paving – partial infiltration Q24/119 Permeable concrete block paving – no infiltration Q24/12 Permeable concrete block paving |
Product range |
Specification data - Concrete paving blocks
Standard | To BS EN 1338: 2003. |
Physical properties | |
Colour | Autumn Gold.Brindle.Charcoal. |
Finish | Textured.Guidance for specification option: Aged chamfer. |
Profile | |
Paver type | Regular plan form. |
Arrises | Chamfered (aged). |
Interlocking features | Spacer nibs. |
Dimensions and associated tolerances | |
Nominal sizes | 105 x 140 x 80 mm.Guidance for specification option: 7.50 m² per pack. 140 x 140 x 80 mm.Guidance for specification option: 7.53 m² per pack. 210 x 140 x 80 mm.Guidance for specification option: 7.53 m² per pack. |
Arrises | Chamfered. |
Weathering resistance | Class 3. |
Abrasion resistance | Class 3.Guidance for specification option: ≤23 mm; determined by Wide Wheel Abrasion test. |
Slip resistance | Unpolished Slip Resistance Value (USRV): ≥55; Potential for slip: Low. |
Recycled content (minimum) | Manufacturer's standard. |
Type | Hand lay. |
Other requirements | Not required. Permeable chippings joint material. Guidance for specification option: Compliant with BS 7533-13: 2009. |
Third-party certification | CE marked. |
Permeability | Surface permeability: 3386 mm/h when tested to BS DD 229:1996. |
ThermalConductivity | 1.2 W/m·K. |
Strength | Characteristic tensile splitting strength: ≥3.6 MPa; Failing load ≥250 N/mm. |
Tolerances on plan dimension and thickness (nominal) | Thickness: ±3 mm; Plan size: ±2 mm. |
Literature
Specialist Kerbs & Permeable Paving
Case studies
Darcliffe Homes provide a sustainable solution with Brett's Alpha Flow permeable paving, complement the rural backdrop of their prestigious development.