Sample Q37’s

February 8, 2015


Q37

Extensive Green Roof

  • Roof Type : Eco Green Roof Wildflower Plug Plant roof System

-Substrate: Root – resistant waterproofing or aluminium (by others)

-Slope: 0-8 Degrees

  • Waterproofing: As J41
  • Thermal Insulation: as J41
  • Protection: Root resistant waterproofing (by others)
  • Moisture contril layers:

-Eco 300mm Moisture Retention/protection Mat as clause 340

-Eco Drainage/Retention Layer as clause 350

-Eco Filter sheet as clause 360

 

  • Growing Medium: Eco Green Roofs Extensive Substrate as Clause 380

-Depth 150mm + 20% Settlement factor

  • Vegetation: Eco Wildflower, grass and herb plugs and seed,5% minimum coverage on installation as clause 400
  • Accessories:

-Upstand protection fleece: – as Clause 330

-Nutrient – as Clause 380

-Edge retaining profile – as clause 420

-Inspection chamber – as clause 430

-Vegetation barrier – as clause 440

 

Performance

 

General Design

  • Green roof and associated features: Complete the detailed design.
  • Proposals: Submit drawings, technical information, calculations and manufacturer’s literature.
  • Performance criteria: Instant green coverage on roof

 

Characteristic Roof Loads

  • Dead loads:

-Roof structure, screed and waterproofing

-Green roof layers: 1.69 kN per square meter (saturated)

  • Imposed roof loads

-Activity

-Vegetation

-Allowance for additional loads during construction

 

  • Service loads:
  • Snow Loads:
  • Other loads:
  • Requirement: Restrict site activities to ensure that design loads are not exceeded, or submit proposals for temporary supports.

Products

 

Moisture Retention/Protection Mat

  • Manufacturer: Manufacturer: Eco Green Roofs Ltd Unit 3 Rays Farm Barns, Ingatestone, Essex CM4 9EH Tel: 0800 6347035 Web: www.ecogreenroofs.co.uk
  • Material – Non rotting, biumen – compatible geotextile fleece- backed,recycled polypropylene mat.

-Capacity: 2l/m2

Drainage Layer

  • Manufacturer: Manufacturer: Eco Green Roofs Ltd Unit 3 Rays Farm Barns, Ingatestone, Essex CM4 9EH Tel: 0800 6347035 Web: www.ecogreenroofs.co.uk
  • Material: Thermoformed recycled polypropylene

-Depth:12mm

-Retention Volume: 4.3l/m2

-Horizontal flow rate: 1.25 l/s/m2

-Vertical flow rate: 8 l/s/m2

Compressive strength:150 kPa

  • Infill: Not required

 

Filter Membrane

  • Manufacturer: Eco Green Roofs Ltd Unit 3 Rays Farm Barns, Ingatestone, Essex CM4 9EH Tel: 0800 6347035 Web: www.ecogreenroofs.co.uk
  • Material: Thermally – Strengthened polypropylene

-Mass 0.120kg/m2

Extensive Growing Medium

  • Manufacturer: Eco Green Roofs Ltd Unit 3 Rays Farm Barns, Ingatestone, Essex CM4 9EH Tel: 0800 6347035 Web: www.ecogreenroofs.co.uk
  • Material: Light weight site formulated, crushed brick & expanded clay growing substrate. In –Organic & organic substrate consisting of crushed brick, expanded clay & organic matter of composted bark fines
  • Depth: 50-150mmm
  • Declaration of analysis: Submit.
  • Parameters: Prosity: 63%
  • Water Holding Capacity: 35% – 45%
  • Bulk Density DIN EN 1097-3: 0,85 – 0,90 to /m3
  • Weight by max water capacity: 1,10 to /m3

Vegetation

  • Manufacturer: Manufacturer: Eco Green Roofs Ltd Unit 3 Rays Farm Barns, Ingatestone, Essex CM4 9EH Tel: 0800 6347035 Web: www.ecogreenroofs.co.uk
  • Planting mix: Wildflower plug plant Species
  • Vegetation coverage: 5% minimum

Edge Retaining Profile

  • Manufacturer: Manufacturer: Eco Green Roofs Ltd Unit 3 Rays Farm Barns, Ingatestone, Essex CM4 9EH Tel: 0800 6347035 Web: www.ecogreenroofs.co.uk
  • Material: Aluminium
  • Height: 180mm

Inspection Chambers

  • Manufacturer: Manufacturer: Eco Green Roofs Ltd Unit 3 Rays Farm Barns, Ingatestone, Essex CM4 9EH Tel: 0800 6347035 Web: www.ecogreenroofs.co.uk
  • Material: Black,plastic – coated steel
  • Size: 250x250mm Depth 120mm

 

Vegetation Barrier

  • Material@ Rounded washed pebbles (20-40mm)
  • Depth: 70mm
  • Width: 300mm
  • Void Filler:
  • 100mm deep
  • 300mm wide

Execution

Installation Generally

  • Preparation: Clear all surfaces of debris.
  • Timing: After certification of waterproof membrane integrity.
  • Surface condition: Visually inspect waterproof membrane, report any damage.
  • Faults in waterproof membrane: Report
  • Contamination: Do not use materials detrimental to healthy plants growth.
  • Storage: Do not overload – point loads avoid
  • Outlets: Do no block. – Outlet grilles: Installed

Adverse Weather

  • Unfinished work: Secure for damage and wind uplift
  • Conditions: Do not install or work with frozen materials

Moisture Retention/Protection Mat Installation

  • Extent: Loose lay continuously over entire roof area.
  • Joints: Minimze.
  • Overlaps (Minimum):150mm
  • Upstands: Eco Green roofs fleece to fit closely around penetrations and outlets

Drainage Layer Installation

  • Extent: Loose lay continuously over entire roof area.
  • Fitting: Closely butt- joint boards.
  • Upstands: Cut to fit closely around penetrations and outlets, using a heavy duty knife or smooth – toothed saw.

Filter Membrane Installation

  • Joints: Minimize.
  • Overlaps (minimum): 150mm
  • Fitting: Loose Laid

Growing Medium Installation

  • Handling: Minimize handling. Deliver to roof in small sacks, bulk bag or pump, spreading the specified depth on to filter sheet, allowing the settlement factor of 20%
  • Conditions: Handle in the driest condition possible. Do not handle or install when wet or frozen
  • Layers:
  • Depth(Max): 50- 150mm

Sequence: Use grading bars to achieve the correct depth. Gently firm each layer before spreading the next. Apply pre-formulated nutrient regrime according to planting plan and rake in.

Vegetation Installation

  • Handling Plug:
  • Extent: Continuous over area to be planted.
  • Timing: To be installed during the spring or Autumn
  • Storage: must be stored in a cool and shaded area
  • Application
  • Wildflower and grasses plug plant. To be installed within 48 hours of delivery. Plug plants hand – planted into the growing medium. 20 plugs per sqm. Irrigated to saturation.
  • Watering: Thoroughly, after laying account for climatic variation and seasonality

Edge Retaining Profile Installation

  • Cutting: Neat, accurate and without spalling
  • Junctions: vertical, secured using proprietary connectors.
  • Position: True to line and level. Smooth continuous lines.
  • Fixing: Loose laid onto 300g protection fleece, ballasted by weight on foot plate.
  • Suitable for pitched roofs of 5 degrees or less

Inspection Chamber Installation

  • Location: Install centrally over drain outlet.
  • Orientation: Align parallel with adjacent features
  • Bedding: Position flanges on to crowns of drainage layer.
  • Backfill: Ballast flanges with pebbles
  • Surround: 300mm diameter circle/square of 20-40 rounds pebbles

COMPLETION

Inspection

  • Timing: Before handover.

-Give notice (minimum):3 days

Completion

  • General: Leave the works in a clean, tidy, condition.
  • Surfaces: Clean immediately before handover
  • Outlets: Clean and clear of obstructions
  • Completed green roofs: Protect from adjacent or high level working

Documentation

  • Timing: Submit at handover.
  • Contents
  • Growing medium declaration of analysis
  • Manufacturers gurantees and warranties
  • Procedures for maintenance of green roof
  • Record drawings the location of planting and associated features

Plug Plants list

  • YARROW
  • KIDNEY VETCH
  • DAISY
  • GERANIUM VARIRITES
  • HAREBELL
  • CLUSTERED BELLFLOWER
  • WILD STRAWBERRY
  • LADYS BEDSTRAW
  • GROUND IVY
  • CATS EAR
  • AUTUNM HAWKBIT
  • ROUGH HAWKBIT
  • OXEYE DAISY
  • YELLOW TOADFLAX
  • CREEPING CINQUEFOIL
  • COWSLIP
  • PRIMROSE
  • SELFHEAL
  • BULBOUS BUTTERCUP
  • SALAD BURNET
  • SMALL SCABIOUS
  • WHITE CAMPION
  • BLADDER CAMPION
  • BETONY
  • WILD THYME
  • HAIRY VIOLET
  • COMMON DOG VIOLET
  • WILD PANSY