ACO RoofBloxx

Application

  • Active and passive blue roof applications.
  • Green/ 'living' roofs.
  • Blue/ green roof applications with or without passive irrigation systems.
  • Roofing systems that form part of a podium deck or green roof system.
  • Warm and inverted roofs.

Description

Complete roof water attenuation system for blue, green and blue/ green roofs. It enables engineers to create a drainage platform which gives architects the design flexibility required to create imaginative, multi-functional open green spaces at the roof or podium level.

Comprising a shallow, high-strength, adjustable geo-cellular storage void and roof outlet flow control system, it is fully compatible with ACO roof outlets, downpipes and surface water drainage systems to provide a complete sustainable drainage system (SuDS).

Complete system includes:

  • Planting (200–1000 mm).
  • Filter geotextile.
  • ACO RoofBloxx (85–165 mm).
  • Protection fleece.
  • Waterproofing.
  • Insulation.
  • Vapour barrier.
  • Roof slab.
  • ACO Blue Roof Flow Restrictor.

ACO Blue Roof Flow Restrictor:

When combined with the ACO Blue Roof Flow Restrictor, the units can store rainwater at source to control surface water run-off. The system can also permanently store a percentage of the captured water for use in passive irrigation systems. Manufactured from corrosion-resistant 1.4301 (304) grade stainless steel. A coded solid cover (with vent) ensures the restrictor position is easily identified and prevents debris from potentially blocking the outlet.

The design of the restrictor is individually tailored to suit the site-specific requirement of each roof. Carried out to BS EN 12056-3 or attenuation sizing principles. ACO design services need to know:

  • The desired flow rate of the roof (L/s).
  • The maximum design storage depth (mm).
  • The number of roof outlets and overflows.
  • Water reservoir depth (mm), if required.

Features and benefits:

  • Modular polypropylene construction.
  • Stackable geocellular units (in 40 mm increments).
  • Three unit sizes (85, 125 and 165 mm depth).
  • Units interlock in any orientation.
  • Internal void ratio of 90%.
  • Top surface void ratio of 53%.
  • ACO Blue Roof Flow Restrictor works with ACO vertical, and 45 and 90 degree roof outlets.
  • 100% recyclable.
  • Shallow, high strength design (800 kN/m²).
  • Adjustable storage depth.
  • Stackable without the need for shear connectors.
  • Suitable for pedestrian and vehicular areas.
  • Suitable for use beneath permeable and impermeable surfaces.
  • Passive irrigation is attainable with a cotton capillary wick (6 mm thick).
  • Compatible with ACO roof outlets, downpipes and surface water drainage.

Applications:

  • Active and passive blue roof applications.
  • Green/ 'living' roofs.
  • Blue/ green roof applications with or without passive irrigation systems.
  • Roofing systems that form part of a podium deck or green roof system.
  • Warm and inverted roofs.

General information

Uniclass 2015

Ss_50_70_85_34 Geocellular soakaway systemsPrimary

CAWS

R17/315 Modular plastics soakaway units

Specification data - Geocellular soakaway systems

Product Reference

ACO RoofBloxx

Type

ACO RoofBloxx 85

500 x 500 x 85 mm. Volume: Gross: 0.021 m³, Net: 0.019 m³. Weight: 2.2 kg.

ACO RoofBloxx 125

500 x 500 x 125 mm. Volume: Gross: 0.031 m³, Net: 0.028 m³. Weight: 3.3kg.

ACO RoofBloxx 165

500 x 500 x 165 mm. Volume: Gross 0.041 m³, Net: 0.037 m³. Weight: 4.4 kg.

ACO Blue Roof Flow Restrictor

Not required

50/75 Horizontal Orifice

300 mm diameter, 3 mm depth.

50/75 HP Vertical Orifice

300 mm diameter, 3 mm depth. Height to suit max storage depth.

100/150 Horizontal Orifice

380 mm diameter, 3 mm depth.

100/150 HP Vertical Orifice

380 mm diameter, 3 mm depth. Height to suit max storage depth.

ACO RoofBloxx Reservoir Tray

110008

500 x 500 x 30 mm. Vertical compressive strength: 470 kN/m². Capacity: 11.6 L/m².

110007

500 x 500 x 60 mm. Vertical compressive strength: 618 kN/m². Capacity: 18 L/m².

Standard product features

Colour:

Black.

Technical characteristics:

- ACO RoofBloxx:

  • Material: Polypropylene.
  • Top surface void area: ~53%.
  • Internal void ratio: ~90%.
  • Compressive strength: 800 kN/m² (maximum).
  • Discharge capacity (depending on type and gradient percentage): 6.4–18.8 L/m/s.
  • Biological/ chemical resistance: Unaffected by moulds and algae, soil-borne chemicals, bacteria and bitumen.

- ACOTex plus protection fleece:

  • Material: 100% ultraviolet (UV) stabilized polypropylene, mechanically bonded continuous filament non-woven sheet.
  • Size: 100 x 4 m.
  • Thickness (for 2 kPa): 2.9 mm.
  • Mass per unit area: 325 g/m².
  • CBR puncture resistance: 3850 N.
  • Strip tensile strength: Machine and cross machine direction (md and cd): 24 kN/m.
  • Elongation at maximum load: Machine direction (md): 100%, cross machine direction (cd): 40%.
  • Cone drop test: 15 mm.
  • Opening size: 90 mm.
  • Permeability vertical: 60 L/m²/s.

- ACOTex infiltration geotextile:

  • Material: 100% ultraviolet (UV) stabilized polypropylene, mechanically bonded continuous filament non-woven sheet.
  • Size: 100 x 4 m.
  • Thickness (for 2 kPa): 1 mm.
  • Mass per unit area: 125 g/m².
  • CBR puncture resistance: 1500 N.
  • Strip tensile strength: Machine direction (md): 9 kN/m, cross machine direction (cd): 10 kN/m.
  • Elongation at maximum load: Machine direction (md): 90%, cross machine direction (cd): 65%.
  • Cone drop test: 15 mm.
  • Opening size: 90 mm.
  • Permeability vertical: 60 L/m²/s.

- ACO RoofBloxx Reservoir Tray:

Material: Recycled polypropylene.

Literature

ACO RoofBloxx Brochure

ACO RoofBloxx Brochure