technical brochure - optigreen · motto of the optigreen technical brochure. the heart of this...

T ECH N I C A L B RO CH U R EGREEN ROOFS

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INTRODUCTION2 Contents3 User information & service4 Green roofs and their benefits SYSTEM SOLUTIONS6 The 10 Optigreen system solutions – an overview8 Economy Roof12 Lightweight Roof16 Nature Roof20 Retention Roof24 Pitched Roof32 Garden Roof36 Landscape Roof40 Public Roof46 Solar Green Roof52 Wall Garden PRODUCT SOLUTIONS56 Root barrier58 Connectors60 Protective, storage and filter fleeces 62 Fall protection66 Surround (edging)68 Drainage74 Irrigation76 Substrates80 Europa82 Vegetation planting / approval84 Care and maintenance86 Wind drift / erosion protection89 Planters CONSTRUCTION aND PLaNNING aIDS90 Suitable roof constructions92 Structural requirements93 Checklist94 Explanations / Conversions / Drainage index CONTaCT96 about Optigreen

INTRODUCTION

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“At least one secure solution to every problem” – that is the motto of the Optigreen Technical Brochure.

The heart of this technical guide is the range of Optigreen system solutions for the ten most important applications. Here you will find an appropriate solution for the majority of your projects that will also impress building owners:

Optigreen system solutions page1. Economy Roof 82. Lightweight Roof 123. Nature Roof 164. Retention Roof 205. Pitched Roof 246. Garden Roof 327. Landscape Roof 368. Public Roof 409. Solar Green Roof 4610. Wall Garden 52

a SOLUTION FOR DESIGNING aNY TYPE OF GREEN ROOF

HOW TO QUICKLY FIND YOUR SYSTEM SOLUTION

On pages 6 + 7 you will find an overview of each of the ten Optigreen system solutions displayed together with an identification symbol, reference photo, and the most impor-tant technical features. With the help of the SYMBOL, the page number and the right-hand tab, you can quickly navi-gate to the desired Optigreen system solution.a more detailed description of the primary functions and components of each system solution can then be found on the following pages. Following on from the Optigreen system solutions, the most important Optigreen products are described along with photos, technical data and planning fundamentals starting at page 56.This Technical Brochure takes the following issues into account: The experience and knowledge of the Optigreen Group; the tried and tested Optigreen product and system solutions; the requirements of the green roof guidelines of the FLL (Landscape research, development, and construc-tion association - Forschungsgesellschaft Landschaftsent-wicklung Landschaftsbau e.V.)This does not, however, remove the obligation to inform oneself about the current technical state of structures and to apply any additional guidelines, standards, and legisla-tive requirements that are needed. as our experience relates primarily to United Kingdom, for countries outside of this region other planning require-ments must be adhered to. We take no responsibility for typographical errors or altera-tions made after printing. an up-to-date current version can be found at www.optigreen.co.uk.

Krauchenwies, 10th May 2011

USER NOTES

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Protects the roof membrane from ex-treme temperature differences, UV rays, hail and incrustation. This makes for a roof lifespan approximately twice as long as that of a non-greened roof.

Rainwater storage. an extensive green roof retains approximately 40 – 80 % of annual rainfall, while an intensive green roof retains up to 80 – 99 %.

Minimisation of rainfall runoff peaks. Incidents caused by heavy rains are re-duced by 50 – 100 % and water discharge to the sewer system is delayed.

These positive effects of green roofs of-fer potential savings via roof drainage, channel dimensioning, and rain-catching cisterns.Green roofs generally help reduce costs. a green roof is recognised as a “sealing measure” by many local authorities in the course of ecological wastewater manage-ment.

PRO GREEN ROOFThese benefits speak for themselves

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Improvement of the (micro-) climate through evaporation and transpiration. The retained rainwater evaporates and cools the surroundings.

Yield increase of photovoltaic systems of up to 5 % through the evaporation-induced cooling of the green roof.

Binding of dust and pollutants in the air. Particle matter and air pollutants are filtered out – they are bound in the sub-strate, decomposed and absorbed by the plants. CO2 is also reduced.

Improvement of the heating and cooling insulation. The green roof construction functions like an additional insulation layer: In the summer it serves as a heat shield, in the winter as thermal insulation.

Ecological compensation surface in accordance with the Impact Compensa-tion Regulation. Green roofs provide temporary and permanent habitats for vegetation and animals. They offer rest-ing, feeding and nesting opportunities.

Improvement of commercial and residential environments. Roof greening as component of sustainable building. accessible roofs can serve as additional living spaces, playgrounds, sport areas and communal meeting points.

Large-scale usable design elements for city planners and landscapers. In major cities it is already considered a given fact that the roofs of new buildings will be green roofs: Residential buildings, car parks and carports.

Improvement of sound insulation through greater vibration control of the overall surface and good sound absorption by the vegetation. The mass of the green roof construction and the structure of the vegetation contribute to noise reduction in large cities and areas crossed by airport flight paths.

Protects against electrosmog and mobile telecommunication radiation.

CO2

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SYSTEM SOLUTIONSThe 10 Optigreen system solutions

PAGE 8 – 11

PAGE 12 – 15

PAGE 16 – 19

PAGE 20 – 23

PAGE 24 – 31

OPTIGREEN TYPE “ECONOMY ROOF” Weight: approx. 0.9 – 1.4 KN/m2

Layer height: 80 mmVegetation form: Sedum - herbs - grassesWater rentention: approx. 50 – 60 %Ecological value: Cost factor:

OPTIGREEN TYPE “PITCHED ROOF”Weight: approx. 1.0 – 1.9 KN/m2

Layer height: 80 – 130 mmVegetation form: Sedum (herbs - grasses)Water rentention: approx. 40 – 70 %Ecological value: – Cost factor:

OPTIGREEN TYPE “NaTURE ROOF”Weight: approx. 1.0 – 3.0 KN/m2

Layer height: 100 – 250 mmVegetation form: Sedum - herbs - grassesWater rentention: approx. 60 – 70 % Ecological value: Cost factor:

OPTIGREEN TYPE “LIGHT-WEIGHT ROOF”Weight: approx. 0.5 KN/m2

Layer height: 50 mmVegetation form: Sedum - mossWater rentention: approx. 40 – 50 %Ecological value: Cost factor:

OPTIGREEN TYPE “RETENTION ROOF”Weight: approx. 1.2 – 1.5 KN/m2

Layer height: 120 – 140 mmVegetation form: Sedum - herbs - grassesWater rentention: > 80 % Ecological value: Cost factor:

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OPTIGREEN TYPE “GaRDEN ROOF”Weight: approx. 3.2 – 6.8 KN/m2

Layer height: 260 – 600 mmVegetation form: Perennials - woody plants - lawns Water rentention: approx. 70 – 95 %Ecological value: Cost factor:

OPTIGREEN TYPE “SOLaR GREEN ROOF”Weight: approx. 1.0 – 1.4 KN/m2

Layer height: from 80 mmVegetation form: Sedum Water rentention: approx. 50 – 60 %Ecological value: Cost factor:

OPTIGREEN TYPE “WaLL GaRDEN”Weight: approx. 0.5 – 0.83 KN/m2

Height: 1000 mmWidth: 600 mmDepth: 60 mmVegetation form: Sedum - herbs - grassesEcological value: Cost factor:

OPTIGREEN TYPE “PUBLIC ROOF”Weight: approx. 2.5 – 7.0 KN/m2

Layer height: 120 – 400 mmEcological value: (Green variety)Cost factor: –

OPTIGREEN TYPE “LaNDSCaPE ROOF”Weight: approx. 7.0 – 13.0 KN/m2

Layer height: 600 – 1000 mmVegetation form: Perennials - woody plants - trees Water rentention: approx. 95 – 99 %Ecological value: Cost factor:

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TECHNICaL DaTaWeight*: Solution 1: 0.9 – 1.4 KN/m2 Solution 2: 1.0 – 1.4 KN/m2

Layer height: 80 mmRoof pitch: 0 – 5° (0 – 9 %) Vegetation form: Sedum - herbs - grassesWater rentention / discharge coefficient / water storage 50 – 60 % C = 0.47 – 0.6 approx. 25 l/m2

Ecological value: Maintenance costs: Cost factor:

BRIEF DESCRIPTION SOLUTION 1: 0 – 5°

… m2 Optigreen Protection and Storage Fleece Type RMS 300 (RMS 500 with increased requirements) as a protec-tive layer over the root-resistant roof membrane, or Optigreen Root Barrier Membrane

… m2 Optigreen Drainage Board Type FKD 25 as drainage layer

... units of Optigreen Combi Inspection Chamber fitted over the roof drainage outlets

… m2 Optigreen Extensive Single Layer Substrate Type M* to fill the FKD 25 with 60 litres/m2

… m2 pre-cultivated Optigreen Vegetation Mat Type SM/G for rapid and safe establishment of vegetation

alternative: … m2 Optigreen Seeding with Optigreen Seed Type a and

8 litres/m2 Optigreen Germinating Substrate for rapid and safe establishment of vegetation with 50 g/m2 sedum sprouts

… m2 maintenance care

BRIEF DESCRIPTION SOLUTION 2: 1 – 5°***

… m2 Optigreen Protection and Storage Fleece Type RMS 300 (RMS 500 with increased requirements) as a protective layer over the root-resistant roof membrane, or Optigreen Root Barrier Layer

… units of Optigreen Triangle Water Conduit consisting of 1 Combi Inspection Chamber and 24 linear meters of Water Conduit profiles per roof drainage outlet

… m2 80 mm Optigreen Extensive Single Layer Substrate Type M* as drainage vegetation layer


alternative: … m2 Optigreen Seeding with Optigreen Seed Type a and

8 litres/m2 Optigreen Germinating Substrate for rapid and safe establishment of vegetation with 50 g/m2 sedum sprouts


CHaRaCTERISTICS The most cost-efficient

green roof solution. Low maintenance green roof

design. Relatively low biodiversity.

* Depending on the load capacity of the substructure, Optigreen “High Density (HD)“ or “Low Density (LD)“ substrates can be used. Weight specifications refer to saturated conditions; dry weight is approx. 60 – 70 % of the saturated weight.** Depends on slope and system solution.*** Minimum slope pursuant to national guidelines.

OPTIGREEN „ECONOMY ROOF“ SYSTEM SOLUTION

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Optigreen Drainage Board Type FKD 25(25 mm)- Rapid discharge of surplus water

- Prevents the accumulation of water on non-

pitched roofs and in large drainage lengths

- Light-weight build-up with high drainage

capacity

Optigreen Extensive Single Layer Substrate Type M* (Solution 1: 60 l/m2 or Solution 2: 80 mm)

- This substrate is specifically for extensive

single layer systems with high water retention

and good drainage

Optigreen Combi Inspection Chamber- Simple control of roof drainage outlets

- Extendable in 100 mm increments

- Side and top drainage openings

Optigreen Protection and Storage Fleece Type RMS 300 (RMS 500 with increased require-ments) - Protects the roof membrane against damage

and stores water

- For inverted roofs, use the Optigreen Trickle

Protection Mat Type RS instead of the RMS

fleece

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2 2

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SOLUTION 2: 1 – 5°** SOLUTION 1: 0 – 5°

Solution 1

Solution 1

Optigreen Triangle Water Conduit (patented)- For fast water drainage and distribution,

consisting of Combi Inspection Chamber and

Water Conduit profiles

Solution 2

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1 Optigreen Vegetation Mat Type SM/G- Pre-cultivated sedum/moss mat for the fast

establishment of vegetation against wind

erosion, with decomposable lining material

- alternative: Optigreen Hydro-Seeding

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1. Economy Roof features Cost-efficient green roof structure in terms of material,

installation and care. Relatively low maximum weight. Weighs as little as a

gravel roof. The only lighter system is the Optigreen “Lightweight Roof” system solution (see Page 12 and following).

a simple method to give large roof areas a low-mainte-nance green roof.

Often cheaper than a gravel roof.

2. Vegetation MatsThe use of pre-cultivated vegetation mats provides with immediate surface finalisation and an instant coverage of approx. 80 – 100 %. Vegetation mats are installed on the finished layer of Exten-sive Substrate Type M and are available with several spe-cies compositions, consisting of sedum, grasses and herbs.Vegetation mats are ideal as wind drift/erosion protec-tion in corners and edges of green roofs and on extremely exposed roofs in general. They provide with the fastest means of vegetation establishment.

3. Hydro-seedingThere is an ideal solution for greening large surface areas (from 1,000 m2) reliably and cost-effectively: Optigreen Hydro-Seeding. Sedum shoots are distributed on the extensive single layer substrate Type M (approx. 50 g/m2) and covered with a watery solution (approx. 8 l/m2). also see page 86.

The watery solution is comprised of Optigreen Germinating Substrate:

Special substrate with primarily organic materials to ensure the rapid establishment of vegetation

Optigreen Seed Mix Type A: a proven, special blend of seeds “Sedum/Herbs (/Grasses)” for extensive single layer greening

Optigreen erosion protection: To protect against erosion caused by wind and rain; remains effective for many weeks

Water

The viscous hydro-seeding solution, containing seeds, surrounds the sedum shoots and creates close contact between the vegetation parts and the Optigreen Extensive Single Layer Substrate Type M. The result is an even distribution of seeds and shoots over the entire surface area. The resulting growth from Optigreen Hydro-Seeding is far more reliable and weather-independent than dry seeding. WITHOUT germinating sub-

strate: Risk of drying outWITH Optigreen Germinating Substrate: Reliable growth

OPTIGREEN “ECONOMY ROOF” SYSTEM SOLUTION

Simple and cost-efficient measure for impacts on nature and landscape.

Reduction in costs for municipalities with split waste-water fees.

Biodiversity is lower than, for instance, that of the Optigreen “Nature Roof” system solution (see page 16) due to the shallow layer construction and the use of a single layer substrate.

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Triangle Water Conduit Profile as “branch channels” to drainage points

3. 0°-Roof with Ponding (Solution 1)In the case of a 0°-roof where unevenness and counter slopes create ponding of 10 – 20 mm, special measures need to be taken in order to prevent the vegetation from becoming waterlogged. Single Layer extensive greening does not cope well with high levels of standing water over an extended period of time – the substrate becomes waterlogged, transforming the abovelying vegetation into an undesired mixture of moss and grass. Through the underside drainage channels of the Optigreen Drainage Board Type FKD 25, a part of the surplus water is directed to the drainage point, while the standing water that remains is kept out of the substrate. additional solutions in the case of high levels of standing water: Optigreen Nature Roof, as a multi-layered structure (see page 16).

4. Roof with pitch from 1 – 5° (Solution 1 and 2)Despite a minimum pitch, heavy rainfall can cause an accumulation of water in longer drainage distances (more than 10 m) if not properly dimensioned. as a rule, the surplus water should always be directed to the roof drainage outlets without backup forming at the substrate surface. This is achieved by installing the Drainage Board FKD 25 (solution 1) or 24 – 40 m of Triangle Water Conduit Profiles per roof drainage outlet and the matching Combi Inspection Chamber (Solution 2).The Optigreen Triangle Water Conduit Profiles are laid out on the Optigreen Protection Fleece Type RMS in a Y-formation and then covered with Optigreen Extensive Single Layer Substrate Type M. Surplus water is directed through the triangle Water Conduit to the roof drainage outlets or drainage gutters. Combining the Optigreen Triangle Water Conduit System with Optigreen Extensive Single Layer Substrate Type M will allow for trouble-free drainage distances of up to 30 m with no backwater formation. Long grooves in saddle or monopitch roofs may require larger drain profiles (TSK).

Further details see product solutions Drainage, page 70 onward

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1 Optigreen Extensive Single Layer Substrate Type M2 Optigreen Drainage Board Type FKD3 Standing water underneath the FKD:

FKD 25 up to 15 mm water; FKD 40 up to 25 mm water

1

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OPTIGREEN “LIGHTWEIGHT ROOF” SYSTEM SOLUTION

TECHNICaL DaTaWeight*: 0.5 KN/m2

Layer height: 50 mmRoof pitch: 0 – 5° (0 – 9 %) Vegetation form: Sedum - mossWater rentention / discharge coefficient / water storage 40 – 50 % C = 0.64** approx. 18 l/m2

Ecological value: Maintenance cost: Cost factor:


… m2 Optigreen Protection and Storage Fleece Type RMS 300 (RMS 500 with increased requirements) as protective layer over the root-resistant roof membrane


... units of Optigreen Combi Inspection Chamber fitted over the roof drainage outlets

… m2 Optigreen Low Density Substrate Type L to fill the FKD 25 with 30 litres/m2




… m2 Optigreen Protection and Storage Fleece Type RMS 600 K as protective layer with a capillary effect on the root-resistant roof membrane

... units of Optigreen Inspection Chamber with 4 m2 Optigreen Drainage Mats Type EV as drainage support fitted over the roof drainage outlets

… m2 30 mm Optigreen Low Density Substrate Type L as vegetation substrate



CHaRaCTERISTICS The lightest green roof solution.

Special construction design. Drift-proof system solution, only

usable with a secured (fixed) roof membrane.

Can also be used for non-pitched roofs without deep ponding.

Available with automatic irrigation for dry regions.

Higher care and production costs than the “Economy Roof” system.

* Weight specifications refer to saturated conditions; dry weight is approx. 50 – 60 % of this** Messured at 0° in accordance with FLL guidelines*** Minimum slope pursuant to national guidelines.

NOTE Not suitable for inverted roofs, as the load is too low.

To be used only with fixed roof membranes.

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Optigreen Inspection Chamber- Simple control of roof drainage outlets

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Optigreen Vegetation Mat Type SM/G- Pre-cultivated sedum/moss mat for the fast

establishment of vegetation against wind

erosion, with decomposable lining material

Optigreen Low Density Substrate Type L (Solution 1: 30 l/m2 or Solution 2: 30 mm)- On single layer extensive substrate in

accordance with construction design, with

low weight but high water-storage capacity

Optigreen Drainage Board Type FKD 25 (25 mm) - Rapid discharge of surplus water

- Prevents accumulation of water for non-

pitched roofs and large drainage lengths


capacity Solution 1

Optigreen Protection and Storage FleeceType RMS 300 (RMS 500 with increasedrequirements)- Protects the roof membrane against damage

and stores water

Optigreen Drainage Mat Type EV around the roof drainage outlet- Rapid discharge of surplus water around the

roof drainage outlet

- Low membrane strength, easily and quickly

relocated

- Requirements: 4 m2 per roof drainage outlet

Solution 1

Solution 2


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6 Optigreen Protection and Storage Fleece Type RMS 600 K- Protects the roof membrane against damage

and stores water, with a capillary effect

Solution 2

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2. Lightweight Success Factors The Optigreen Light Vegetation Substrate Type L was

specially created and tested for this application area. Despite the thin-layered construction method, the vegetation sustains a rooted, natural vegetation base.

No use is made of artificial so-called “substrate panels and mats” made from materials which would not be covered by vegetation (e.g. mineral wool, foamed plastics).

Optigreen Low Density Substrate Type L meets the requirements of the FLL green roofing guidelines for extensive single layer substrates and has been opti-mised especially in the interest of “weight with maxi-mum water capacity” thanks to its great water-storage capacity: The maximum water retention lies at over 40 per cent volume, twice as much as that outlined by the green roofing specification guidelines! In other words: 30 mm of Optigreen Low Density Substrate Type L absorbs just as much water as 60 mm Optigreen Extensive Single Layer Substrate Type M (see fig. below).

In saturated conditions, the Optigreen Low Density Substrate Type L only weighs 830 kg/m3 (= 25 kg/m2 at 30mm). When dry, it only weighs 430 kg/m3.

Optimised super-lightweight Optigreen Vegetation Mat Type SM/G, which has a thickness of approximately 15 mm and weighs only about 20 kg/m2 in saturated conditions.

1. Lightweight Roof features When a green roof needs to be created but the underly-

ing structure for the roof greening will only permit a light load.

Because the Optigreen “Lightweight Roof” system solution weighs only about 50 kg/m2 even in saturated conditions, making it half as heavy as a conventional gravel roof.

However, the optimal lightweight design comes with a price: Manufacturing and maintenance costs are higher than other types, such as the Optigreen “Economy Roof” system solution.

Structural requirements: a bonded or mechanically-fixed roof membrane and a minimum roof pitch of 2 – 9 % (1 – 5°).

Optigreen Low Density Substrate Type L 1 m3 absorbs 400 litres water 1 m3 weighs 830 kg (when saturated/waterlogged)

Optigreen Extensive Single Layer Substrate Type M 1 m3 absorbs 200 litres water 1 m3 weighs 1,200 kg (when saturated/waterlogged)

400 litres

200 litres

OPTIGREEN “LIGHTWEIGHT ROOF” SYSTEM SOLUTION

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above with care and below without care

Freshly-rooted vegetation mat

The new standards must be observed (see also page 90)

3. Wind drift/erosion protectionThe Optigreen “Lightweight Roof” system solution is securely protected against wind erosion thanks to its combination of substrates and vegetation mats. The precultivated Optigreen Vegetation Mats already have a dense vegetation cover and root quickly into the Optigreen Low Density Substrate Type L.

The result is a completely rooted green-roofing system with 100% vegetation coverage that is not impacted by wind. as a rule, further measures must be taken for wind drift/erosion safety on high and/or exposed buildings, particularly around edge and corner areas.

See also the product solution “Wind drift/erosion protection” on page 90.

The Optigreen “Lightweight Roof” system solution is not suitable for wind zone 3 and inverted roofs, and only in rare cases suitable for roofs with loosely installed roof membranes.

4. VegetationThe vegetation used with this system solution is delivered as a pre-cultivated vegetation mat. The pre-cultivated Optigreen Vegetation installed with the “Lightweight Roof” is composed primarily of a combination of various sedum and mosses.

also see the product solution “Vegetation Planting/ approval” on page 86.

5. MaintenancePurely mineral-based and thinly layered substrates should immediately be treated upon installation with a thin layer of Optigreen Opticote Slow Release Fertiliser.

Subsequently, repeated fertilisation is required – usually once per year – using approximately 30 –50 g/m2 of Optigreen Opticote Slow Release Fertiliser in order to provide the vegetation with necessary nutrients. Without regular nutritional care, even sedum won’t show a strong surface-covering growth and will show a strong red colour.

This may lead to gaps in the vegetation cover, making it susceptible to wind erosion. We recommend establishing a care and maintenance contract with your local Optigreen partner.

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TECHNICaL DaTaWeight*: 1.0 – 3.0 KN/m2

Layer height: 100 – 250 mmRoof pitch: 0 – 5° (0 – 9 %) Vegetation form: Herbs - grasses - sedum, possibly woody plantsWater rentention / discharge coefficient / water storage 60 – 70 % C = 0.56 – 0.27** approx. 30 – 80 l/m2



… m2 Optigreen Protection and Storage Fleece Type RMS 300 (RMS 500 with increased requirements) as protec-tive layer over the root-resistant roof membrane or Optigreen Root Barrier Membrane


… units of Optigreen Combi Inspection Chamber fitted over the roof drainage outlets

… m2 Optigreen Filter Fleece Type 105 as filter layer be-tween the drainage and vegetation substrates

… m2 60 mm (or more) of Optigreen Extensive Substrate Type E* as vegetation substrate

… m2 200 mm partial substrate mounds with Type E … m2 seeding with Optigreen Seed Type E and 50 g/m2

sedum shoots for rapid and safe establishment of vegetation

… m2 planting with drought-resistant woody plants or perennials for partial mounds



… m2 Optigreen Protection and Storage Fleece Type RMS 300 (RMS 500 with increased requirements) as protec-tive layer over the root-resistant roof membrane or Optigreen Root Barrier Membrane

…units of Optigreen Triangle Water Conduit, consisting of Combi Inspection Chamber over the roof drainage outlets and 24 linear meters of Water Conduit profiles per shaft

… m2 50 mm Optigreen Drainage Layer Type Perl 2/10 as drainage layer from natural bulk material

… m2 Optigreen Filter Fleece Type 105 as filter layer be-tween the drainage and vegetation substrates

… m2 50 mm (or more) Optigreen Extensive Substrate Type E* as vegetation substrate

… m2 200 mm partial mound with Type E … m2 seeding with Optigreen Seed Type E and 50 g/m2

sedum shoots for rapid and safe establishment of vegetation

… m2 planting with drought-resistant woody plants or perennials for partial mounds


CHaRaCTERISTICS High biodiversity of flora

and fauna. Roof greening with high

ecological value. Habitat for butterflies

and wild bees. Long-lasting and colourful

blooming effect. Use of recycled plastic materials.

OPTIGREEN “NaTURE ROOF” SYSTEM SOLUTION

* Depending on the load capacity of the substructure, Optigreen “High Density (HD)“ or “Low Density (LD)“ substrates can be used. Weight specifications refer to saturated conditions; dry weight is approx. 60 – 70 % of the saturated weight.** Depends on slope and system solution.*** Minimum slope pursuant to national guidelines.

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Solution 2

Solution 2

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5

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5

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7 7

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Load calculation for mounds and higher sub-strates: Weight for 10 mm is approx. 13 kg/m2


Solution 1

Perennial plants and/or Optigreen Seed Mix Type E and sedum shoots- Proven and specially-balanced seed mix con-

sisting of a wide range of herbs and grasses

(as desired) as well as numerous types of

sedum shoots

Optigreen Extensive Substrate Type E (50 – 200 mm)- a substrate with high water storage capacity

and good air porosity, tailored to extensive

multi layer systems

- Mounds of up to 200 mm, as required

Optigreen Drainage Layer Type Perl 2/10 (50 mm)- Drains surplus water

- Structure completely penetrable by roots

- Simple levelling of roof unevenness

- High-capacity water reservoir for vegetation

Optigreen Filter Fleece Type 105- Prevents fine particles from forming sludge

in the drainage layer; high water permea-

bility

Optigreen Triangle Water Conduit (patented)- For rapid water drainage and distribution,

consisting of Combi Inspection Chamber and

Water Conduit profiles

Optigreen Protection and Storage Fleece Type RMS 300 (RMS 500)- Protects the roof membrane against damage

and stores water

- For inverted roofs use the Optigreen Trickle

Protection Mat Type RS instead of the RMS

Fleece

Optigreen Drainage Board Type FKD 40 (40 mm)- Rapid discharge of surplus water




capacity

- Vapour-permeable layer for tension reduction

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Optigreen-Combi Inspection Chamber- Simple control of roof drainage outlets



Solution 1

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1. Basic Principles The “Optigreen Nature Roof” has been based on the following principles for many years:

Use of natural materials Usage of recycled plastic materials only,

if any plastic materials are used No use of PVC Recyclability of all materials High biodiversity of flora and fauna Significant reduction of impacts on the environment Variety of roof landscape arrangements via different

substrate heights. High water retention and high discharge delay

2. Structural diversity & designThe Optigreen “Nature Roof” system solution should not be seen as a rigid system but rather as a green roof solu-tion that allows for structured and therefore diversified roof greening. The Optigreen Nature Roof allows you to make use of different substrate heights and corresponding plant varieties, as well as different design elementselements. This creates visually attractive green roofs of high ecologi-cal quality.

as an alternative to the basic green roof structure with a 100 mm total height, the Optigreen Extensive Sub-strate Type E can be increased by 50 – 250 mm over the entire surface or in specified areas. In other words: Substrate mounds are possible, provid-ing the underlying structure will permit their installa-tion

The use of plants based on a list of special varieties, for example in accordance with bloom colour and flowering period

Planting in sectors separated by gravel or chippings (plant patches, plant islands)

Gravel and chippings in various forms and granulations Curved or straight lines to surround objects penetrat-

ing the roofs, and for fire safety requirements Temporary water surfaces are aesthetically pleasing

and attractive to insects Durable ponds which serve many types of birds as a

drinking source during dry seasons and contribute to a greater degree of biodiversity on the roof

Rootstocks and deadwood serve as both design ele-ments and as nesting aids for wild bees

3. Plant variety Different types of vegetation can be specified depending on the overall height of the Optigreen layer construction.

Total layer height Vegetation form Optigreen Vegetation list

100 mm sedum/grass/herbs p.82

150 mm grass/herbs p.82

from 250 mm wild perennials/ p.83 woody plants

The use of Optigreen Seed Mix Type E is recommended for roof areas with a uniform and rich variety of meadow flowers blooming from april to September:

Long-term proven seed mix with a balanced composition

26 herbs and 4 types of grasses. Separate distribution of herbs and grass-seed is

possible via the use of separate packaging Very good seed quality

additionally, partial substrate mounds can be seeded with drought-resistant wild perennials and woody plants. In the case of visible roof areas, special consideration should be taken when choosing an appropriate selection of Optigreen Perennials assortment.

OPTIGREEN “NaTURE ROOF” SYSTEM SOLUTION

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a structured and diverse roof greening will support the greatest variety of animals

The most ecologically valuable type of greening is an extensive greening with partial substrate mounds and a sedum/herb/woody vegetation with temporary smaller water surfaces, deadwood and gravel areas

Thin-layered extensive green roofs are usually only temporarily inhabited by winged animals and need to be attracted on a yearly basis

Intensive green roofs provide durable habitats for animals

Soil-dwelling animals (i.e. earthworms) that are sensitive to frost and dry conditions can only survive throughout the year if they have an appropriate retreat in the form of higher substrate layers

4. Animals on green roofs Appropriate vegetation selection for the green roof structure is crucial to the attraction of animals on the roof. A dissertation based on the scientific examination of over 120 types of Optigreen Green Roofs revealed the following:

* MaNN, G. (1998): Occurrence and significance of soil animals (macrofauna) on green roofs depending

on the form of vegetation – Dissertation Univ. Tuebingen

Moos-Sedum

Sedum- Grass-Herbs

Grass-Herbs

Sedum- Woody plants

Wild Peren-nials-Woody plants

Height Perennials and Shrubbery

Num

ber o

f spe

cies

so

il-dw

ellin

g an

imal

s

0.20.9 1.2

4.4

7.26.7

Average number of species of soil-dwelling animals* depending on the type of vegetation

Moos-Sedum

Num

ber o

f spe

cies

3

17

Sedum- Herbs- Woody plants

Wild Peren-nials-Woody plants

Height Perennials and Shrub-bery

35

1719

2723

Wild bees

Ground beetles

Number of species of wild bees and ground beetles* depending on the type of vegetation

20


Layer height: 120 – 140 mmRoof pitch: 0 – 1° (0 – 2 %) Vegetation form: Herbs - grasses - sedumWater rentention / discharge coefficient / water storage ≥ 80 % C ≤ 0.2* to 53 l/m2


BRIEF DESCRIPTION

… m2 Optigreen Protection and Storage Fleece Type RMS 300 (RMS 500 with increased requirements) as protective layer over the root-resistant roof membrane or Optigreen Root Barrier Membrane

… m2 Optigreen Meander Panels as drainage system with a discharge delay effect: Discharge coefficient C (in accordance with FLL) at 1° Roof pitch: 0.17; long-term water storage capacity: 17 l/m2; temporary Water storage capacity: 15 l/m2


… m2 Optigreen Filter Fleece Type 105 as filter layer between Meander panels and Extensive Substrate Type E

… m2 60 mm Optigreen Extensive Substrate Type E* as vegetation layer

… m2 seeding with Optigreen Seed Type E and 50 g/m2 sedum shoots for the rapid and safe establishment of vegetation


* Depending on the load capacity of the substructure, Optigreen “High Density (HD)“ or “Low Density (LD)“ substrates can be used. Weight specifications refer to saturated conditions; dry weight is approx. 60 – 70 % of the saturated weight. In accordance with the requirements of the FLL guideline, the specified weight does not take temporary water accumulation into account.

CHaRaCTERISTICS System solutions with defined

water retention. Peak discharge C: 0.17 at 1° roof

pitch and 0.08 at 0° (in accordance with FLL guidelines).

Water storage and delay. For green and gravel roofs. Prevents accumulation of water in

cases of ponding in heights up to 40 mm.

With a patented system, peak flow is reduced for very good drainage (even in large areas).

NOTE Not suitable for inverted roofs

OPTIGREEN “RETENTION ROOF” SYSTEM SOLUTION – Meander System

* See also next page

21

Perennial plants and/or Optigreen Seed MixType E and sedum shoots- Proven and specially-balanced seed mix

consisting of a variety of herbs and grasses

and a wide range of sedum shoots.

Optigreen Extensive Substrate Type E* (60 mm)- a substrate with high water storage capacity

and good air porosity, tailored to extensive

multi layer systems

- Designated substrate with high water-storage

capacity and good air porosity

- Mounds of up to 200 mm, as required

Optigreen Filter Fleece Type 105- Prevents fine particles from forming

sludge in the drainage layer;

high water permeability

Optigreen Protection and Storage Fleece Type RMS 300 (RMS 500 with increased requirements)- Protects the roof membrane against damage

Optigreen Meander Panels, patented (60 mm)- Strong delay discharge of surplus water



- Lighter build-up with better drainage perfor-

mance

1

2

3

4

5

3

5

4

2

1

Optigreen Combi Inspection Chamber- Simple control of roof drainage outlets



Technical Specifications and detailed technical drawings can be found at www.optigreen.co.uk

Discharge coefficient C after or at 0 % in accordance with FLL guidelines

Total layer height120 mm(60 mm Meander Panel+ 60 mm Optigreen Extensive Substrate)140 mm(60 mm Meander Panel + 80 mm OptigreenExtensive Substrate)

Roof pitch

0 %

2 %

0%

2 %

C (ψ)

0,08

0,17

0,05

0,13

22

1. Advantages at a glance Patented, unique and safe drainage, storage and delay

elements Drainage functionality in accordance with green roof

guidelines No waterlogging Strong discharge delay Discharge coefficient C = 0.17 at 1° roof pitch

Discharge coefficient C = 0.08 at 0° roof pitch in accordance with FLL-procedures.

Simple and fast installation Suitable for most Optigreen system solutions and roof

pitches from 0 – 1°; also suitable for gravel roofs

2. How the Optigreen Meander System worksThe patented Optigreen Meander System was developed specially for combined “discharge delay and drainage” applications and is totally unique in the way it functions. Surplus water from the Optigreen system structure is gathered in the cells of the Optigreen Meander Panels and passed from one cell to the next. as the water is passed through the system elements in a sinuous route, the drainage distance is lengthened up to 13-fold, thereby delaying the discharge (thus, a meandering discharge). Simultaneously, the drainage performance beneath the drainage element is extremely high. The long-term waterstorage which is available to the vegetation has a capacity of 17 l/m2 while the maximum backup is 32 l/m2.

32

1

Nature copied: The meandering river flow as a functional principle

OPTIGREEN “RETENTION ROOF” SYSTEM SOLUTION – Meander System

*ermittelt in Anlehnung an das FLL-Prüfverfahren

23

Optigreen Substrate Type Optilith

Rainwater management

3. Modern rainwater managementThe objective of modern rainwater management is to utilise water from precipitation as far as possible and to discharge as little as possible into the sewer system. The following components play an important role:

Roof greening Rainwater utilisation Soak-aways Ponds

Green roofs retain between 40 and 90 per cent of annual precipitation depending on their layer build-up and the precipitation region. Plants and vegetation consume the retained water and return it to the environment through evaporation. The resulting positive effects include cool-ing, air humidification and air cleaning. The burden on the sewer system is significantly reduced and costly flood prevention measures can be minimised or even omitted completely.

4. Water use and leechingOptigreen system solutions can be combined with other aspects of decentralised wastewater management in or-der to reduce discharge into the sewers to zero. The Optigreen “Optilith” product solution, a zeolite-rich mineral substrate, was specially developed to be used in combination with the Optigreen green roof structures and water usage. an 80 – 150 mm high structure with Optigreen Optilith special substrate is characterised by the following features:

Water retention of approximately 40 – 50 % of annual precipitation

Zeolite-rich substrate provides a nutritional compo-nent

The surplus water attains, in general, the quality of drinking water in accordance with LaGa-ZO

Water clarity is largely unaffected The surplus water is suitable for garden irrigation and toilet flushing

24

BRIEF DESCRIPTION

… m2 Optigreen Protection and Storage Fleece Type RMS 500 as protective layer over the root-resistant roof membrane or Optigreen Root Barrier Membrane

… m2 Optigreen Structured Storage Fleece Type SSV 800 for protection and storage

Required for roofs with pitch greater than approx. 15°**: … m2 Optigreen Anti-Slip System Type ... (as and when

required, see page 29) to secure and stabilise the sub-strate layer

… m2 60 – 80 mm (for vegetation mats) and 80 – 100 mm (for seeding) Optigreen Extensive Substrate Type E* as vegetation layer

… m2 pre-cultivated Optigreen Vegetation Mat Type SM/ KG for the rapid and safe establishment of vegetation

alternative for 5 – 15°**: … m2 Seeding with Optigreen Seed Type E and 50 g/m2

sedum shoots for the rapid and safe establishment of vegetation

… m2 maintenance caree

BRIEF DESCRIPTION

… m2 Optigreen Protection and Storage Fleece Type RMS 500 as protective layer over the root-resistant roof membrane or Optigreen Root Barrier Membrane

… m2 Optigreen Structured Storage Fleece Type SSV 800 for protection and storage

Required for roofs with pitch greater than approx. 15°**: … m2 Optigreen Anti-Slip System Type ... (as and when

required, see page 29) to secure and stabilise the sub-strate layer

… m2 110 mm (for Vegetation mats) – 130 mm (for seed-ing) Optigreen Extensive Substrate Type E* as vegeta-tion layer

… m2 pre-cultivated Optigreen Vegetation Mat Type SKG/G for the rapid and safe establishment of vegetation

alternative for 5 – 15°**: … m2 Seeding with Optigreen Seed Type E and 50 g/m2 sedum shoots for the rapid and safe establishment of vegetation


CHaRaCTERISTICS Permanent solutions for pitched and steep green roofs. Different system solutions depending on construction conditions. Cost-efficient and safe anti-slip systems.

TECHNICaL DaTa SEDUM ROOFWeight*: 1.0 – 1.3 KN/m2

Layer height: 80 –100 mmRoof pitch: 5 – 45° (9 – 84 %) Vegetation form: Moss - sedum - herbsWater rentention / discharge coefficient / water storage 40 – 60 % C = 0.6 – 0.4 approx. 35 l/m2


TECHNICaL DaTa NaTURE ROOFWeight*: 1.6 – 1.9 KN/m2

Layer height: 130 mmRoof pitch: 5 – 35° (9 – 70 %) Vegetation form: Sedum - grass - herbsWater rentention / discharge coefficient / water storage 50 – 70 % C = 0.5 – 0.3 approx. 40 – 50 l/m2


* Depending on the load capacity of the substructure, Optigreen “High Density (HD)” or “Low Density (LD)” substrates can be used. Weight specifications refer to saturated conditions; dry weight is approx. 60 – 70 % of the saturated weight.

OPTIGREEN “PITCHED ROOF” SYSTEM SOLUTION

25

Optigreen Vegetation Mat (5 – 15° seeding)- Pre-cultivated sedum (herbs/grasses) mat for

the rapid establishment of vegetation, with

decomposable lining material (for roofs with

a pitch greater than 15°)

Optigreen Extensive Substrate Type E (60 – 100 mm for sedum roof, 110 – 130 mm for nature roof)- On specified extensive design-designated

substrate with high water-storage capacity

and good air porosity

Optigreen Structured Storage Fleece Type SSV 800- Protects the roof membrane against damage

and stores water

- Omitted for roofs from 15° roof pitch and

replaced with a Structured Storage Fleece

Type SSV 800

Optigreen Protection and Storage Fleece Type RMS 500- Protects the roof membrane against damage

and stores water

- Omitted for roofs from 15° roof pitch and

replaced with a Structured Storage Fleece

Type SSV 800

Optigreen Anti-Slip System (as and when required, see page 29)**- Prevents the slipping of the green roof struc-

ture and stabilises the substrate layer

Systems: Net and sills Type N

Carrier/Load-bearing and sills Type T

Cable and sills Type S

Inverted-roof = U-roof Type U

SHEaR STRESS DISTRI-BUTION aT THE RIDGE

SHEaR STRESS DISTRI-BUTION aGaINST THE EaVES

SHEaR STRESS DIS-TRIBUTION OVER THE SURFaCE

Optigreen anti-Slip System Type S (Page 30)

Optigreen anti-Slip System Type N (Page 31)

Optigreen anti-Slip System Type U (Page 32)

Optigreen anti-Slip System Type T (Page 32)

Optigreen anti-Slip System Type N and Type S (Page 30 and 33)

Sealed shear sills

1 2 3

System selection based on load-bearing capacity

1

12

2

3

3

4

4

5

5

from 15° Roof pitch**

SOLUTIONS: Sedum Roof and Nature Roof

25

** as a rule, Optigreen anti-Slip Systems (see page 29) and Optigreen Vegetation Mats need to be used in cases of a roof pitch of at least 15°. No tension should be applied to the roof membrane.

Technical Specifications and detailed technical drawings can be found at www.optigreen.co.uk

26

1. Basic principlesPitched green roofs require special attention during the planning phase. Roof pitch, roof construction, roof struc-ture, statics, safety and necessary anti-slip measures for the desired vegetation plan all need to be considered. When combined with the anti-slip system elements, the mesh-like effect of the Optigreen Extensive Substrate Type E results in a safe and stable layer that is easily penetra-ble by vegetation roots. The installation height is based on climate, roof position in relation to the sun, and – when necessary – it can also determine the positioning of green aspects of the ridges and eaves. It is also important to note that security measures for main-tenance personnel must be provided.

2. Anti-Slip Systemas a rule, it should be assumed that shear forces due to roof greening and snow loads will affect the roof construc-tion and/or roof membrane in roofs with a pitch of at least 3°. These effects must be taken into consideration. In cases of a slope greater than 3°, roof membranes need to be secured at the base in accordance with applicable guide-lines or the manufacturer’s instructions if they are subject to tension by applied loads. In the case of steep roofs, the shear stress distribution from the green roof can be trans-ferred to the roof structure in a number of ways. These shear forces are summarised as follows:

Build-up load of the green roof structure (Substrate Type E = approx. 0.13 KN/cm x m2)

Vegetation (0.1 – 0.15 KN/m2) Snow load (DIN 1055) Dependency on roof pitch and drainage flow length Type of roof membrane surface

Roof pitches up to 15°: On slightly pitched roofs with up to 15° slope, shear forces can be transferred to the roof membrane if it is firmly bond-ed to the substructure, either partially (in strips) or wholly (total surface) with the use of metal sheeting. There is a risk that the green roof build-up on roofs with a pitch of 10-15° and flow lengths exceeding 6 metres can slip under the influence of extreme weather conditions such as, for in-stance, heavy rainfall. Constructional measures are there-fore necessary to prevent this from happening. Optigreen claw fabric mats can be used on saddle roofs to spread the load evenly by laying them across the roof ridge and filling them with substrate.

Example of loads from shear forces(Roof pitch of 25°, 10 m space from the eaves/ridge, and an assumed snow load of 0.85 KN/m2)

Optigreen Sedum Roof (Weight approx. 1.15 KN/m2) Load on eaves = 8.5 KN/m

Optigreen Nature Roof (Weight approx. 1.65 KN /m2) Load on eaves = 10.6 KN/m

Depending on roof pitch and the possibility of shear forces affecting the supporting structure, the following Optigreen system solutions have been developed:

Optigreen Claw Fabric Mats for saddle roofs up to a maximum pitch of 15°

South and north sides with varying types of vegetation

OPTIGREEN “PITCHED ROOF” SYSTEM SOLUTION

27

Roof pitches over 15°: Depending on the roof structure, the corresponding desig-nated Optigreen anti-Slip System should be used: Type N (net), Type S (cable), Type T (carrier/load-bearing), and Type UK (inverted roof).Depending on the possible construction and statics, anti-slip measures for pitched roofs with a slope of greater than 15° are classified in accordance with the type of shear stress distribution:

Suspended or fastened over the ridge = shear stress distribution to the ridge Type S 1 Type N 2

Supported against the eaves = shear stress distribution against eaves Type U 3 Type T 4

Secured to the roof area surface = shear stress distribution over the surface Type S 1 Type N 2

3. DrainageThe drainage of a pitched roof should be limited to the nec-essary minimum to ensure that vegetation is not unneces-sarily deprived of water. In the Optigreen system the water storage and drainage of surplus water occurs via the Opti-green Structured Storage Fleece Type SSV 800. The under-side of the mat is comprised of 50 drainage grooves and a water storage filter fleece capable of storing up to 6 litres of water per square meter. The Structured Storage Fleece Type SSV 800 is built-in underneath the Optigreen anti-Slip System. This ensures a continuous filtering and storage of water, as well as drainage of surplus water all the way to the eaves. See also page 73.

Depending on the design of the eaves, the filtered water is directed either to the internal drainage conduit or to the external roof gutter. In the case of extreme drainage flow lengths (over 20 m), the maximum possible roof length must be calculated during the planning phase and, if ap-plicable, additional measures to meet drainage needs must be taken.

4. IrrigationWith the exception of thin-layered structures located in dry climates, additional irrigation measures are generally not necessary. In the Optigreen system, the water supply is ensured by a designated substrate, tailored to pitch roof constructions. The Optigreen Extensive Substrate Type E is comprised of strong mesh-like material with varied mineral granulations, it also has a high water-holding capacity. (approx. 38 l/m2 at a height of 100 mm), which greatly sur-passes those of storage and drainage elements.

Internal Optigreen Drainage Conduit, with Structured Storage Fleece Type SSV 800 placed above

21

3 4

28

Sill spacing for Type N

Roof pitch Sill spacingup to 20° 1000 mm21 – 25° 500 mm26 – 35° 330 mm36 – 45° 250 mm

Optigreen Anti-Slip System Type N (Net) for barrel, monopitch, saddle and cupola roofs The Optigreen anti-Slip System Type N consists of an extra-tough and rot-proof net. Its purpose is to transfer tensile force to the ridge (i.e. for barrel roof constructions).

The special Optigreen anti-Slip sill is mounted by securing it to the net, using its integrated mountain hooks. It is then either draped over the ridge or secured via anchor system. The advantage of the system lies in its easy transferabil-ity and notable flexibility. The distance between sills is easily adapted to suit the roof pitch. Due to the high level of standardisation, cost-efficient pitched roofs are made possible.

2

1Features of the Anti-Slip Sill Type N: Two extendable rods for security against vegetation mat slip-page for use with 60 and 80 mm substrate structures Staggered positioning of anti-slip sillsDrainage provided by spacer studs located underneath the profile

Layer height 60 mm, sill width 700 mm, effective width 600 mm

Curved form – prevents overturning due to substrate pressure

Space-saving transport thanks to stackable profiles

Very flexible in use depending on roof shape and pitch

3

1

11

23

OPTIGREEN “PITCHED ROOF” SYSTEM SOLUTIONSteep roofs with shear stress distribution at the ridge

29

Sill spacing for Type N


Statically effective fastening to the substructure

Screw with support and nut to attach the profiles

Optigreen Multi-Purpose Support Profile

Cover strips for sealing the fastening points

Anti-Slip Sill Type N with fastening clips

Optigreen Safety Net

Nut for profile

Clamp profile, upper part

Safety net clamped in profile

Fastening screw for profile (pre-assembled)

Clamp profile, lower part

Root-resistant moisture seal with polyester fleece insert

Statically effective fastening

Roof membrane (root-resistant in accordance with FLL)

Thermal insulation

Statically effective substructure

123

45

2 3

4

5

6

6

Optigreen Anti-Slip System Type N for applications with mechanical fixingThe stainless steel Optigreen Fastening Profile permits mounting that is flush to the substructure. The Optigreen Fastening Profile is screwed into a statically effective point in the substructure.It is sealed into the roof membrane according to the waterproofing manufacturer’s recom-mendations. The Optigreen anti-Slip Systems are simply hung and fixed into the multi-purpose support profile. This permits the Optigreen anti-Slip System Type N (Net) to be easily attached. The maximum possible load transfer must be calculated during the planning phase.

OPTIGREEN “PITCHED ROOF” SYSTEM SOLUTIONSteep roofs with shear stress distribution over the surface

6

6

6

7

7

8

8

9

9

10

10

1

1 2

2

3

34

4

5

5

1

30

Sill spacing for Type T


Drainage groove, height-adjustable from 75 – 105 mm

Optigreen Anti-Slip Safety Shoe

Optigreen Anti-Slip Element

Statically effective fastening based on calculations

Cover plate

Optigreen Substrate Type E

Optigreen Structured Storage Fleece Type SSV 800

Gravel strips

12345678

1

2 3

4

56

7

8

Sill spacing for Type U

Roof pitch Sill spacingup to 15° 1200 mm16 – 35° 600 mm

Optigreen Anti-Slip System Type U(Inverted roof) for monopitch and saddle roofsThe Optigreen anti-Slip System for inverted and DUO roofs is especially easy to install. It eliminates the fitting and covering of insulation material in wooden structures visible from below, and the integration of anti-slip sills through the roof membrane. Height of the sills: 60 – 120 mm

Optigreen Anti-Slip System Type T (carrier/load-bearing) for monopitch and saddle roofsThe Optigreen anti-Slip System Type T consists of root-proof recycled materials. The simple connector system con-sists of anti-slip beams (3250 mm length) and anti-slip sills (1070 mm length) with a height of 80 mm. The sills are inserted into the support beams, accomodat-ing for the necessary maximum distance and spacing di-mensions, in accordance with the roof slope and structure height. The water storage and drainage of surplus water takes place below the system through the Optigreen Struc-ture Storage Fleece Type SSV 800.

1

2

3

4 5 67

8

9

> 300 mm

50 mm

Eave profile

Gravel edge

Optigreen Filter Mat Type 105

From 15° roof pitch vegetation mat


Optigreen Structured Storage Sleece Type SSV 800

Optigreen Sill from extruded Polystyrene foam

Roof membrane, root-resistant in accordance with FLL

Static eaves beam

12345

67

89

OPTIGREEN “PITCHED ROOF” SYSTEM SOLUTIONSteep roofs with shear stress distribution against the eaves

* Depending on the mass of the insulation boards

31

Sill spacing for Type U

Roof pitch Sill spacingup to 15° 1200 mm16 – 35° 600 mm

OPTIGREEN “PITCHED ROOF” SYSTEM SOLUTIONSteep roofs with shear stress distribution at the ridge

Maintenance bridge

Optigreen Ridge Fastening Set

Optigreen Vegetation Mat

Optigreen Extensive Substrate Type E

Optigreen Shear Sill

Optigreen Stainless Steel Cable with stopper


123

45

6

1

345

6 7

2

7

Drainage conduit, height adjustable from 75 – 105 mm

Optigreen Stainless Steel Cable with stopper

Optigreen Shear Sill

Cover plate



Gravel strip

1

234567

1

2

3

45

6

7

Sill spacing Anti-Slip System Type S


Optigreen Anti-Slip System Type S (cable) for barrel and monopitch roofsThe Optigreen anti-Slip System Type S consists of high-tensile-strength stainless steel cables which are fitted with stoppers. The cable is attached to specified fastening points on the building via pre-fitted loops or, in the case of equilat-eral loading (saddle or barrel roofs), laid over the ridge and securely anchored. T-shaped sills are positioned in front of the sill stoppers. The system is extremely simple to install and very sturdy. However, dimensioning and stopper dis-tances must be calculated on an independent basis for every building. Height of the sills: 80 mm.

32


Layer height: 260 – 600 mmRoof pitch: 0 – 5° (0 – 9 %) Vegetation form: Perennials - woody plants - lawnsWater rentention / discharge coefficient / water storage 70 – 95 % C = 0.3 – 0.05 approx. 110 – 160 l/m2


BRIEF DESCRIPTION SOLUTION 1: without water accumulation 0 – 5°

… m2 Optigreen Protection and Storage Fleece Type RMS 500 as protective layer over the root-resistant roof membrane

… m2 60 mm Optigreen Drainage Board Type FKD 60 BO as storage and drainer layer filled with Perl 8/16


… m2 Optigreen Filter Fleece Type 105 as filter layer be-tween the drainage and vegetation layers

… m2 230 – 330 mm Optigreen Intensive Substrate Type i* as vegetation layer for perennials and woody plants

… m2 alternative: 150 mm Optigreen Lawn Substrate Type R as vegetation layer for recreational lawns

… m2 planting with selected perennials and woody plants

… m2 maintenance carealternative: … m2 turf

BRIEF DESCRIPTION SOLUTION 2: with water accumulation 0°

… m2 Optigreen Protection and Storage Fleece RMS 300 … m2 Optigreen Root Barrier Membrane 0.8 mm … m2 Optigreen Protection and Storage Fleece Type

RMS 500 as protective layer over the root-resistant roof membrane or Optigreen Root Barrier Membrane

… units of Optigreen Irrigation automation for auto-matic irrigation

… units of Optigreen Triangle Water Conduit consisting of Combi Inspection Chamber over the roof drainage points and 0.3 linear metres/m2 Water Conduit Profile per roof drainage outlet

… m2 120 mm Optigreen Drainage Layer Type Perl 8/16 as drainage layer made of natural bulk material for wa-ter accumulation

… m2 Optigreen Filter Fleece Type 105 as filter layer be-tween drainage and vegetation layers

… m2 230 – 330 mm Optigreen Intensive Substrate Type i* as vegetation layer for perennials and woody plants

… m2 alternative: 150 mm Optigreen Lawn Substrate Type R as vegetation layer for recreational lawns


… m2 maintenance carealternative: … m2 turf

CHaRaCTERISTICS Intensive roof greening. Use of roof landscape as an

additional living space. Perennial beds, recreational

lawns, shrubbery, ponds and seating areas.

Automatic irrigation.

Technical specification texts and detailed technical drawings can be found at www.optigreen.co.uk

OPTIGREEN “GaRDEN ROOF” SYSTEM SOLUTION

* Depending on the load capacity of the substructure, Opti-green “High Density (HD)“ or “Low Density (LD)“ substrates can be used. Weight specifications refer to saturated con-ditions; dry weight is approx. 60 – 70 % of the saturated weight.

33

Optigreen Intensive Substrate Type i* (230 – 350 mm). Alternative: Optigreen Lawn Substrate Type R (150 mm)- On specified extensive design-designated

substrate with high water-storage capacity, good permeability and good air porosity

Optigreen Drainage Board Type FKD 60 BO (60 mm)- Rapid discharge of surplus water- Prevents accumulation of water for non-

pitched roofs and large drainage lengths- Light-weight build-up with high drainage

capacity- Filled with Perl 8/16. No backup on the roof

membrane is possible





- Water accumulation possible


in the drainage layer; high water perme-ability

Optigreen Combi Inspection Chamber (pat-ented)- For simple control of the roof drainage out-

lets- Can be combined with Optigreen automatic

Irrigation, if needed

Optigreen Triangle Water Conduit(patented) - For rapid water drainage and distribution,

consisting of Combi Inspection Chamber and Water Conduit Profiles

- as required, can be combined with irrigation automation for automatic drainage (see page 74)

Optigreen Root Barrier Membrane 0.8 mm- as waterproof backup container

Optigreen Protection and Storage Fleece Type RMS 300/500- Protects root barrier membrane or roof mem-

brane against damage and stores water

Solution 2: not possible for inverted roofs

1

1 1

2

2

2

3

3

4

4

5

5

6

7 77

6

Solution 2

Solution 1

Solution 2

SOLUTION 1: 0 – 5°

33

Solution 1

Solution 2

SOLUTION 2: 0°

34

Optigreen Drainage Board Type FKD 60 BO For roofs from 0–5 % Light-weight material Water storage approximately 14 litres/m2/60 mm Rapid water drainage Limited structure height No backup on top of the sealing No backup irrigation possible for roof pitch If necessary, additional irrigation can be placed above,

for example via hoses or a drip irrigation system

2. OptionsMost design options are feasible. The ground-level garden can simply be transferred to the roof, creating extra living space:

Perennial beds Woody plants Recreational lawns Ponds Terraces and paths Pavilions and bowers Sandboxes

A CB

1. Choice of drainage Both the Optigreen Drainage Layer Type Perl and the Optigreen Drainage Board Type FKD conform to the green roof guidelines and are designated as drainage layers for intensive greenings. The difference lies in the material they consist of, as well as in the usage for artificial irrigation and water accumulation.

OPTIGREEN “GaRDEN ROOF” SYSTEM SOLUTION

Solution 1 Solution 2

Optigreen Drainage Layer T Perl 8/16 with water accumulation

Natural material Water storage approximately 40 litres/m2/120 mm in

water accumulation absorbs water and discharges the surplus Totally penetrable by roots Water accumulation in the drainage layer combined

with an extremely cost-effective automatic backup-irri-gation system (see section on irrigation on page 74)

Please also take note of the information concerning the Optigreen System Solution “Public Roof” on page 42.

35

A Recreational lawn a recreational lawn is considered an

“intensive greening”. Intensive care required, with multiple cut and

fertilisations and a good water supply. Water backup or drip irrigation is recommended. Use of the specialised Optigreen Lawn Substrate Type R

(see substrate product solution on page 76). Minimum installation height of the Substrate Type R:

150 mm. Lawn establishment with pre-cultivated turf in order to

achieve a uniform appearance.

B Sandbox Borders for the sandy play area can be established with

Optigreen Edge Elements Protects the roof membrane against mechanical

damage from above (i.e. a spade) through the Optigreen Protection Mat Type RMS 1200

Sand-full height up to 400 mm

C Pond Structured as a ground-level garden Separate UV-resistant Optigreen Pond Liner Optigreen Protection Fleece Type RMS 900 under the

Optigreen Pond Liner and Optigreen Protection Fleece Type RMS 300 over the Optigreen Pond Liner are used as protection against mechanical damage

3. Maintenance Lawn care on a roof is just as important as a lawn care of a ground-level garden: regular mowing and fertilisation with the Optigreen Opticote Slow Release Fertiliser (see care product solutions page 88)

Regular irrigation is essential and can be completed with Optigreen automatic Irrigation (see pages 34/35 solution 2 and irrigation product solution on page 72)

additionally, in the first months after installation the vegetation must also be watered from above in order to ensure that plant roots grow securely into the deeper substrates

We recommend using a trained Optigreen partner com-pany from your region to ensure regular and proper care

36


Layer height: 600 – 1000 mmRoof pitch: 0 – 5° (0 – 9 %) Vegetation form: Perennials - woody plants - treesWater rentention / discharge coefficient / water storage 95 – 99 % C = 0.05 – 0.01 approx. 180 – 320 l/m2


BRIEF DESCRIPTION SOLUTION 1: without water accumulation 0 – 5°

… m2 Optigreen Protection and Storage Fleece Type RMS 900 as protective layer over the root-resistant roof membrane

… m2 60 mm Optigreen Drainage Board Type FKD 60 BO as storage and drainer layer filled with Perl 8/16



… m2 290 – 690 mm Optigreen aeration Substrate Type U* as a filler substrate between the filter layer and vegetation layer

… m2 250 mm Optigreen Intensive Substrate Type i* as vegetation layer for perennials and woody plants

… m2 150 mm Optigreen Lawn Substrate Type R as vegetation layer for recreational lawns


… m2 laid turf … m2 maintenance care

BRIEF DESCRIPTION SOLUTION 2: with water accumulation 0°

… m2 Optigreen Protection and Storage Fleece RMS 300 … m2 Optigreen Root Barrier Membrane 0.8 mm … m2 Optigreen Protection and Storage Fleece Type

RMS 900 as protective layer over the root-resistant roof membrane or Optigreen Root Barrier Membrane

… m2 150 mm Optigreen Drainage L Type Perl 8/16 as drainage layer made from natural bulk material for wa-ter accumulation

… units of Optigreen Triangle Water Conduit consisting of Combi Inspection Chamber over the roof drainage points and 0.3 linear metres/m2 Water Conduit Profiles per roof drainage outlet


… m2 290 – 690 mm Optigreen aeration Substrate Type U* as a filler substrate between the filter layer and vegetation layer

… m2 250 mm Optigreen Intensive Substrate Type i* as vegetation layer for perennials and woody plants

… m2 150 mm Optigreen Lawn Substrate Type R as vegetation layer for recreational lawns


… m2 laid turf … m2 maintenance care

CHaRaCTERISTICS High green roof build-up with

low weight. Designed root landscapes;

anything possible, from plants to trees.

Long-term roof greening on underground car parks.

OPTIGREEN “LaNDSCaPE ROOF” SYSTEM SOLUTION

* Depending on the load capacity of the substructure, Opti-green “High Density (HD)“ or “Low Density (LD)“ substrates can be used. Weight specifications refer to saturated con-ditions; dry weight is approx. 60 – 70 % of the saturated weight.

37

Optigreen Intensive Substrate Type i* (250 mm)Alternative: Optigreen Lawn Substrate Type R (150 mm)- a specified extensive design-designated

substrate with high water-storage capacity,

good permeability and good air porosity

Optigreen Drainage BoardType FKD 60 BO (60 mm)- Rapid discharge of surplus water- Prevents accumulation of water for non-

pitched roofs and large drainage lengths- Light-weight build-up with high drainage

capacity- Filled with Perl 8/16. No backup on the roof

membrane is possible





Optigreen Filter Fleece Type 105- Prevents fine particles from forming

sludge in the drainage layer;

high water permeability

Optigreen Protection and Storage Fleece Type RMS 300/900- Protects root barrier membrane or roof

membrane against damage and stores water

Optigreen Root Barrier Membrane (0.8 mm) - as waterproof backup container

Solution 2: Not possible for inverted roofs

Optigreen Aeration Substrate Type U* (290 – 690 mm)- a mineral substrate designed as filler

between the Optigreen Drainage and Filter

Layer and the Optigreen Intensive Substrate

or Optigreen Lawn Substrate; specifically for

high intensive structures

1

1 1

2

2 2

3

3

3

4

4

5

5

8

6

7

77

8 7

Solution 2

Solution 2

1

37

SOLUTION 1: 0 – 5° SOLUTION 2: 0°

Solution 1

Optigreen Triangle Water Conduit (patented) - For rapid water drainage and -distribution,

consisting of Combi Inspection Chamber and Water Conduit Profiles

- Can be combined with irrigation automation for automatic drainage, if needed (see page 74)

6

Solution 2

38

1. What you need to know about the Optigreen Landscape RoofThe Optigreen “Landscape Roof” system solution allows for a diverse variety of plants, including shrubbery and trees due to its high multi-layered structure. Green rooftop land-scapes can be created that are visually not different from a ground-level landscape.Similar to the Optigreen “Garden Roof” and “Public Roof” system solutions, the “Landscape Roof” also permits the installation of lawns, play areas, ponds, terraces and more.

2. The principle of the four-layered structureOrganic parts should not be installed at a depth greater than 300 – 400 mm (this prevents unwanted anaerobic decomposition). For this reason, the Optigreen Landscape Roof requires the installation of an additional mineral-rich layer (Optigreen aeration Substrate Type U).

The Optigreen aeration Substrate Type U is incorporated in variable amounts, so that the desired total structure amount is reached. The thickness of the drainage layer and the Substrates Type i or Type R remain constant. The com-plete layer structure is completely penetrable by the roots of trees and shrubbery. The Optigreen Substrates Type i, Type R and Type U are coordinated in such a way that nei-ther a mixture nor a capillary break occurs.

3. Integration into the natural soilThe integration into the natural soil is easily achieved.

4

3

2

1

Optigreen Substrate Type i or Type R

Optigreen Aeration Substrate Type U

Optigreen Filter Fleece Type 105

Optigreen Drainage Layer Type Perl 8/16 orType FKD 60 BO (filled)

1

2

3

4

Optigreen Lawn Substrate Type R

Optigreen Filter Fleece Type 105

Optigreen Perl 8/16

Max. standing water

Optigreen Triangle Water Conduit

Optigreen Protection Fleece RMS 900

Roof membrane (root-resistant in accordance with FLL)

Appropriate substructure

Water-backup barrier

Optigreen Drainage Board Type FKD 10

Gravel pack, drained

1

2

3

4

5

6

7

89

10

11

1

2

3

4

5 6 7

8

9

10

11

OPTIGREEN “LaNDSCaPE ROOF” SYSTEM SOLUTION

39

Drainage Gravel 16 – 32 mm Optigreen Drainage Layer Type Perl 8 /16 bulk materials or Optigreen Drainage Board Type FKD 60

Weight at 150 mm High, approx. 30 KN/m2 Low, Perl 8/16 BS weighs approx. 13.5 KN/m2 Structure FKD 60 BO (filled) weighs only 5.3 KN/m2

Filter fleece Geo-textiles without requirements. Optigreen Filter Fleece Type 105 in Clogging by fine particles of the accordance with the green roof guidelines. substrate is possible. The amount of fine particles is via the requirements of these guidelines.

Vegetation layer Building on existing topsoil Optigreen aeration Substrate Type U and Optigreen Intensive Substrate Type i

Weight at 850 mm High, approx. 17 KN/m2 Low, approx. 11 KN/m2

Permeability Depends on soil quality; often low Good. applicable requirements and not in keeping with requirements of the green roof guidelines.

Unwanted foreign Roots, vegetation parts and No seeds or vegetation parts growth seeding potential of the topsoil in the substrate System with guaranteed No system structure. Project-specific additional system functionality No long-term security. solutions. Guaranteed functionality of 10 years.

4. Limited load reserveThe following solutions are possible if differences between load reserves need to be levelled:

1. Perl “BT”: Lightweight natural bulk material made from especially light expanded clay . Regarded as drainage and levelling layer.

2. “Optifill”: Sheets of extruded polystyrene. The material absorbs very little water and is stable against pressure. Weight: approx. 0.4 KN/m3.

3. “Optipor”: The light Optigreen glass and gravel struc-ture. Maximum weight when saturated/waterlogged 2.50 KN/m3. Very high compression strength; doesn’t retain water permanently due to very high air porosity. Has additional insulating qualities. Therefore is well- suited for the insulation of underground car parks against condensation build-up.

5. Comparison of a conventional underground car park to one with an Optigreen “Landscape Roof” system solutionThere are numerous examples of conventional types of green underground car park roofs (gravel + topsoil) which functioned for many years. However, such car park roofs often end up looking bleak and unattractive after a few years.

Optipor

1000 mm “Conventional” Optigreen System Solutionstructure height underground car park Landscape Roof

This is often due to the poor permeability of the top soil and the lack of coordination between the drainage, vegetation and irrigation layers.

40

TECHNICaL DaTa PEDESTRIaN CaR TRUCKWeight: 2.5 – 7.0 KN/m2 2.5 – 7.0 KN/m2 7.0 KN/m2 Layer height: 120 – 400 mm from 180 mm from 370 mmRoof pitch*: 1 – 5° (2 – 9 %) 1 – 5° (2 – 9 %) 1 – 5° (2 – 9 %)Load class: 1 (max. 4 KN/m2) 2 (max. 25 KN/m2 and 3 (to 160 KN/m2 and 2.5 t (automobile weight) 16 t (automobile weight)

BRIEF DESCRIPTION WaRM aND COLD ROOF

BRIEF DESCRIPTION INVERTED ROOF

CHaRaCTERISTICS Pedestrian areas. Accessible to cars and trucks. Fire access. Can be combined with green

surfaces on the roof. Low layer height and roof load.

… m² 2 ply Optigreen HDPE sheets: 0.2 mm (not with

FKD 12) and 1.0 mm

… m² Optigreen Drainage System as Pedestrian (FKD 10) or (FKD 12) Drainage Layer; Compres-sion strength 400 KN/m2 (FKD 10) or 1,350 KN/m2 (FKD 12)

… m² base layer gravel 0 – 22 or 0 – 32 mm as levelling layer

… m² 30 – 50 mm chippings 0 – 4 mm as bedding for pavement

… m² paving (pedestrian) or con-crete (vehicular)

x

FKD 10

70 – 200 mm

x

60 – 100 mm

x

x

x

x

x

x

70 – 200 mm

x

60 – 100 mm

x

FKD 12

100 –150 mm

x

100 – 120 mm

x

x

x

x

x

x

100 – 150 mm

x

100 – 120 mm

x

FKD 12

200 –300 mm

x

120mm

… m² 2 ply Optigreen HDPE Sheets: 0.2 mm and 1.0 mm

… m² pressure-resistant thermal insulation as specified by the planners

… m² Optigreen Trickle Protection Mat Type RS

… m² Optigreen Drainage Board Type FKD 25 Plus as vehicular drainage layer; compression strength 1,500 KN/m2

… m² filling of the FKD 25 Plus with chippings 2 – 4 mm

… m² Optigreen Filter Fleece Type 105 as Filter Layer between FKD 25 Plus and base layer

… m² base layer gravel 0 – 22 or 0 – 32 mm as levelling layer

… m² 30 – 50 mm chippings 0 – 4 mm as bedding for pavement

… m² paving (pedestrian) or concrete pav-ing (vehicular)


OPTIGREEN “PUBLIC ROOF” SYSTEM SOLUTION Pedestrians, Cars, Trucks

* Roofs without roof pitch do not meet the recommendations of the FLL and should therefore not use Optigreen technology without consultation.

41

Paving (60 – 120 mm high)- Surface layer

(i.e. interlocking paving, slabs, concrete)

Stone chippings 0 – 4 mm (30 – 50 mm)- Base layer for surface layer,

levels to meet measurement tolerances

Optigreen Drainage BoardType FKD 10 (10 mm) for pedestriansType FKD 12 (12 mm) for cars and trucks- Pressure resistance 400 KN/m2 or 1,350 KN/m2

- Prevents accumulation of water


capacity

Base layer of gravel 0 – 22 or 0 – 32 mm(70 – 300 mm)- Secures surface-bearing capacity, distrib-

utes the load and creates inclines

Warm roof Cold roof(with and without roof membrane)

Optigreen HDPE Sheets- Slip layer

- Load distribution

- 1.0 and 0.2 mm thickness

Optigreen Trickle Protection Mat Type RS

Optigreen Drainage Board Type FKD 25 Plus- Pressure resistant (> 1,500 KN filled)

- Permeable by steam vapour

- Easy outflow

- Filled with chippings 2 – 4 mm2.0 – 2.5 % 2.0 – 2.5 % 2.0 – 2.5 %


in the drainage layer; high water permeability

Inverted roof

Inverted roof

Warm roof and Cold roof

2

1

2

1

2

1

2

1

3

3 3 3

4

4 4

5

5

55

6

6

7

7

8

8

41

42

TECHNICaL DaTa Solutions 1 – 3

1. Stadium 2. Exhibition centre 3. Fire access

Weight*: approx. 3.8 KN/m2 approx. 4.5 KN/m2 approx. 6.0 KN/m2

Layer height: 240 mm 270 mm 350 mmRoof pitch: 0 – 5° (0 – 9 %) 0 – 5° (0 – 9 %) 0 – 5° (0 – 9 %) Water rentention / discharge coefficient / water storage: 50 % / C = 0.5 / 20 l/m2 50 % / C = 0.5 / 25 l/m2 50 % / C = 0.5 / 35 l/m2

Ecological value: Maintenance costs:

BRIEF DESCRIPTION

… m2 2 Optigreen HDPE Sheets 0.2 + 1.0 mm

… m2 6 cmmm Optigreen Drainage Board Type 60 BO as pressure-resistant, vehicular drainage layer, filled with gravel lawn base material

… m2 Gravel Lawn Base-Layer Type SRT 2 – 22 mm

… m2 Optigreen Filter Fleece Type 105 as filter layer

… m2 Optigreen Gravel Lawns Substrate Type SR as vegetation layer for lawns

… m2 lawn grid element

… m2 Lawn Grid Substrate Type RG

… m2 Optigreen Lawn Seed Type R for heavily-used lawns

Solution 1:Stadium

x

x

≥ 120 mm

x

120 mm

–

–

x

Solution 2:Exhibition centre

x

x

≥ 120 mm

x

150 mm

–

–

x

Solution 3:Fire access

x

x

≥ 150 mm

x

200 mm

x

x

x

Parking places and access lanes up to 3.5 t total weight, i.e. a football stadium used all year, 1 – 2 times per week.

Occasional use as parking places by trucks up to 11.5 t axle load and cars up to 3 x per day in the sum-mer months.

Year-round use of access roads by trucks and fire vehicles as well as for festival parking – but limited to a case-by-case basis per year.

OPTIGREEN “PUBLIC ROOF” SYSTEM SOLUTION VaRIaNT: “GREEN”

CHaRaCTERISTICS Vehicular green areas on roofs: i.e. gravel

lawn surfaces, parking spaces, access lanes.

Independent of the incline of the roof con-struction

Solution 1 – Type Stadium Solution 2 – Type Exhibition Centre Solution 3 – Type Fire Access

43

SOLUTION 3 SOLUTION 1 + 2

Optigreen Gravel Lawn SubstrateType SR (120 – 200 mm)- Specially designated vegetation layer

Grass grid element- Surface layer, filled with lawn grid substrate


in the drainage layer; high water permeabi-

lity and tear-resistant strength

Gravel Lawn Base Layer Type SRT 2 – 22 mm (≥ 120 mm)- Secures surface bearing capacity, drains and

distributes the load

Lawns- Seed Type R for heavily used lawns

Optigreen Drainage Board Type FKD 60 BO (60 mm)- Pressure-resistant and accessible by trucks- Prevents accumulation of water- Light-weight build-up with high drainage capacity- Stores water- Filled with gravel lawn base layer

Grass grid substrate

Solution 3

2

2

1

1

3

3

3

4

4 4

5

5 5

6

6 6

77 7

8

8 8

applicable for all roof substructures (see also page 46, point 3); except for the inverted roof, in which case a project-specific consultation is necessary.

HDPE sheets- Slip layer

- Load distribution

- 1.0 and 0.2 mm thickness

43

Solution 1 + 2

44

1. General Pedestrian and vehicular roofs, notably those of underground car parks, are often found in the midst of green areas and should therefore be integrated into their surroundings in a complimentary manner. Load distribution, surface drainage and the drainage of the underground interior are all important points to consider in the planning phase.

2. Varieties of use The Optigreen “Public Roof” system solution is subdivided into four varieties, depending on the intended use:1. Pedestrian surfaces (“Pedestrian”)2. accessible to cars (“Cars”)3. accessible to trucks, i.e. fire/emergency access roads (“Trucks”)4. Green areas accessible to any kind of traffic (“Green”)

3. SubstructureThe system structure of the Optigreen Traffic Roofs depends on the type and compression strength of the substructure:

4. Roof pitch/inclineanother definitive aspect to be considered in the planning of Optigreen “Traffic Roofs” is the roof pitch/incline. Depending on the surface drainage and roof pitch (at least 2 % for pedestrian or 2.5 % for vehicular roofs) different developments of the load substrate, as well as the compli-mentary Optigreen system construction techniques, need to be considered.

* Roofs without pitch are not compliant

with the above-outlined FLL recommendations

Variant “Pedestrians”Page 42

Variant “Cars”Page 42

Variant “Trucks”Page 42

Variant “Green”

1. 2.

4.3.

Supporting structure different from surface roof pitch

Supporting structure with surface roof pitch

0°-roof* on supporting pillars

1. 3.

Warm roof construction with pressure resistant insulation

2.

Roofs without insulation(impermeable concrete)

Inverted roofs with pressure resistant insulation

Variant 1 Variant 2

Variant 3

OPTIGREEN “PUBLIC ROOF” SYSTEM SOLUTION

45

5. Optigreen Drainage Boards Type FKD 10/12 The Optigreen Drainage Boards Type FKD 10 and FKD 12

have a limited layer height of 10 or 12 mm. Due to the large cavity volume, measurements of the

drainage in accordance with DIN 4095 can be taken to ensure that standing water on the roof areas is avoided. This helps to prevent any freezing of the construction layers or disintegration of the building materials due to frost.

The drainage mats are laid on a secure slip layer in order to transfer damage from shearing forces caused by driv-ing movements, braking and acceleration forces, to the substructure (membrane).

The upper layer consists of a strong tear-resistant fleece of strength class GRK 2 (FKD 10) or GRK 4 (FKD 12), to ensure the permeability and filter functionality even under the largest possible defined load.

Due to the smooth surface, the different structures must be installed side-by-side to prevent slipping and, in cases of low structure height, must be installed in load-distributing – meaning large-format – panels.

Surrounds (edging) are to be executed using a concrete back support from the concrete quality class C15/20. It is imperative to use concrete with a low carbonate erosion level.

6. Optigreen Drainage Board Type FKD 60The Optigreen Drainage Element FKD 60, specially developed for the irrigation and drainage of vehicular lawn surfaces, combines the following aspects:

Measurement of the drainage in the substructure in accordance with DIN 4095

Simultaneous water retention for vehicular lawn surfaces (FKD 60 BO)

Without water retention under non-green commuting areas (FKD 60 BU)

Uniform transfer of the load to the substructure via large contact areas

Mesh-like effect of the drainage layer, which absorbs acceleration and breaking forces throughout the total substructure and, if necessary, in the side areas

Reduction of the base layer height via the mesh-like effect of the drainage layer

Continuous drainage under paths and green areas

Type FKD 10 (pedestrian surfaces)

Type FKD 12 (vehicular surfaces)

7. Further informationPressure load of the insulating material:

When planning heat insulation measures, choose a durable, pressure-resistant insulating material and take the expected load into account

Protective sealing: Planning the waterproofing system in accordance with national guidelines. The substructure must be tailored to the structure above!

46

… units of Optigreen Combination Control Shaft fitted over the roof drainage outlets

… m2 Optigreen Extensive Single Layer Substrate Type M* with 60 litres/m2 applied to the suction and capillary fleece 600 K or the “Sun Root” and, as required, to the drainage board FKD 25

… m2 50 g/m2 sedum shoots as required: Pre-cultivated vegetation mats Type SM/G

in windy areas … m2 maintenance care


Layer height: from 80 mmRoof pitch: 0 – 3° (0 – 5 %) Vegetation form: SedumWater rentention / discharge coefficient / water storage 50 – 60 % 0 %: C ≤ 0.17** approx. 25 l/m2

2 – 8 %: C ≤ 0.45Ecological value: Maintenance costs: Cost factor:

BRIEF DESCRIPTION

… m2 Optigreen protection and storage fleece Type RMS 500 as protective layer over the root-resistant roof membrane or Optigreen Root Barrier Membrane

… units of Optigreen Solar Module Support “Sun Root”, and as required, module fixing profiles

as required: For irregular roof pitch (2 – 5 %) usage of the “Roof Flex” retrofit kit to adjust height and

angle of the modules … units of photovoltaic modules … m2 Optigreen Suction and Capillary Fleece 600 K over

the “Sun Root” solar module support and underneath the substrate, where it conducts water beneath the modules

as required: For photovoltaic modules of 120 cm Optigreen drainage board Type FKD 25 between the

solar “Sun Root” supports

CHaRaCTERISTICS Cost-efficient combination of

green roofs and photovoltaics. Load-bearing system. Low-maintenance variety of

green roof.


OPTIGREEN “SOLaR GREEN ROOF” SYSTEM SOLUTION

* The layer construction must take into account wind drift/erosion protection. Depending on the load capacity of the substructure, Optigreen “Low Density” or “High Density” Substrates can be used. Weight specifications refer to saturated conditions; dry weight is approx.

60 – 70 % of the saturated weight. Wind drift/erosion protection must be observed.** Messured at 0° in accordance with FLL guidelines

47

Optigreen Suction and Capillary Fleece 600 K - Saves water

- Conducts water under the solar modules

- Distributes water

Sedum shoots- a wide variety of sedum shoots

Optigreen Extensive Single Layer Substrate Type M*- a specified single layer extensive design-

designated substrate with good drainage capacity

Optigreen Solar Module Support “Sun Root”

- Easy-to-install support for the solar modules

- Height ranges from 1000 or 1200 mm

- Higher modules can be moved

Photovoltaic module - Sizes of 1000 mm, 1200 mm and 1600 mm

(lying flat) available for the “Sun Root” product solution

- Choice of manufacturer’s models

Optigreen Combi Inspection Chamber- Simple control of roof drainage outlets- Extendable in 100 mm increments- Side and top drainage opening

Optigreen Protection and Storage FleeceType RMS 500 - Protects the roof membrane against

damage and stores water

4

2 23

5

7

1

2

3

5

4

7

Optigreen Drainage Board Type FKD 25 (25 mm)- Rapid discharge of surplus water- Prevents accumulation of water for non-pit-

ched roofs and large drainage lengths- Drainage between the “Sun Roots” only

for module rows with width greater than 1000 mm

6

6

11

Tested in a

wind tunnel!

48

1. The combination of photovoltaics and green roofs has many advantages for investors:

-10° +30°

30 – 50 %

Photovoltaic system anchored to roof construction, without green roof.

Combination of photovoltaics and green roofs.Load-bearing “Solar Green Roof” system.

Minimum temperature on the roof membrane

Maximum temperature on the roof membrane

- High water retention- High evaporation and

cooling effect- Minimal surface

drainage

50 – 70 %

-30° +80°- Less evaporation- Less water retention- Greater and fast

surface drainage

5 %

95 %

Increased output of the photovoltaic system The green roof provides cooling via evaporation, there-

fore increasing the output of the photovoltaic system in comparison to non-green roof areas.

A green roof protects the roof membrane and extends the roof’s lifespan This contributes to a long and trouble-free operation of the solar power system. The green roof also protects the roof membrane during routine maintenance work on the solar panel system.

The load-bearing “Sun Root” anchor system does not require any anchor points and is cost-efficient Solar systems secured by a green roof structure do not penetrate the roof membrane or substructure and do not require any heavy individual applied loads. They are also more cost-effective as they are less complicated and easier to install.

Fire protection with a green roof as a “hard roof”, the green roof structure prevents fire from spreading.

Rainwater retention Depending on their location, extensive green roofs re-tain 50 – 70 % of the annual precipitation.

System security against wind Wind load reports and wind tunnel tests assure the correct calculation of necessary applied loads. The sta-bility of both the “Sun Root” and the greening are calcu-lated and considered during the planning.

Fulfilment of environmental requirements creates a positive image By fulfilling environmental requirements in terms of sustainable building, a solar and green roof combina-tion structure presents a positive image.


49

2. How the “Solar Green Roof” works

The Optigreen “solar green roof” system solution is a specially developed system that reliably secures the base support for the solar power modules (the “Sun-Root”) through the applied load of the green roof struc-ture.

The vegetation also grows beneath the modules, ena-bling the largest possible surface area of the roof to be greened and providing the maximum possible cooling effect.

Attachment profileOptigreen “Sun Root”Optigreen Suction and Capillary Fleece Type RMS 600 K120er solar moduleAs required: Optigreen Drainage Board Type FKD 25 (only for module rows with width greater than 1000 mm)

6

7

1

5

2

3

3

2

4

1

5

4

Roof membrane (root-resistant in accordance with FLL)Gravel strips 16/32Optigreen Protection and Storage Fleece Type RMS 500Appropriate substructureVegetationOptigreen Extensive Substrate Type M

1011

7

9

86

89

1011

50

1 Level height and build-up depends on the wind load (wind zone, building height, terrain category, distance from edge, dry weight of the substrate, module size) pursuant to Optigreen specifications.

2 The standard incline of the “Sun Root” is 30°; flexible adjustment is possible with the “Root-Flex” retrofit kit.

3 The “Sun Root” prod-uct solution. The drainage element is stabilised with “Root Stiffeners”.The green roof structure provides an applied load which prevents tipping due to wind force. The photovoltaic modules are held securely in place.

4 Waste water is con-ducted underneath the modules via the suction and capillary fleece 600 K (also works on counter slopes of up to 5 %): pro-vides water to the vegeta-tion and creates a cooling effect due to evaporation.

5 Circumferential drainage system.

1

23

4

5

43

3. Advantages of the solar green roof system solution

as the solar system is held securely in place by an applied load, it is not necessary to penetrate the roof membrane, substructure or any other part of the build-ing in order to fix the solar system in place. This negates the need for costly roof sealing work due to damages.

The system design enables narrow rows of modules which permits the highest possible yield in the smallest possible area.

The “Sun Root” support, a multi-functional component, combines a number of advantages in a single structure: support of the photovoltaic module and drainage for the green roof vegetation. Simple and fast installation.

“Sun Root” is lightweight but due to its root-like de-sign, it is a secure structure that is extremely sturdy and wind resistant, and does not require any additional bracing against wind.

Wind lift-up protection was tested in a wind tunnel. Solar power modules that measure 1000 mm and 1200 mm in height can be installed. Larger modules installed in a flat position are also available.

The “Sun Root” has an incline of 30°, the ideal angle of inclination for maximum power yield. The “Root Flex” system retrofit kit allows you to alter the angle of inclination. In this way uneven roof areas of up to 200 mm can be levelled.

Rainwater dripping from the modules is collected and conducted beneath the them via the Optigreen Capil-lary Fleece. Surplus water is saved. This guarantees a safe water supply for the plants, a high degree of water retention and consequent effective cooling via evapora-tion.


51

Optigreen provides an installation plan for

the installation of the Optigreen “Solar Green

Roof” system solution. The Optigreen “Sun

Root” Solar System Support is installed in

accordance with the plan drawing.

The Suction and Capillary Fleece Type 600 K

for vegetation irrigation is then installed

beneath the rows of modules.

5. Notable information for planning and installationPlanning of the combination photovoltaic/green roof re-quires a coordinated effort between various tradesmen (roofers, garden and landscape designers, solar power engineers). The quality of the roof membrane must corre-spond to the intended use and be root-resistant in accor-dance with EN 1394.The Optigreen partner company is responsible for the in-stallation of the “Solar Green Roof” including the fixing profiles and the photovoltaic modules. The modules them-selves are fitted by a solar power engineer who also carries out all electrical work. It is important that the vegetation does not overshadow the solar modules, meaning that gra-vel stripes must often be laid in front of modules.

The additional “Sun Root” solar supports are

placed and installed in accordance with the

plan.

The Optigreen Extensive Substrate [b] is

placed on the Capillary Fleece Type 600 K [a].

The vegetation mat [c] is installed as required

along the edges.

The module fixing profiles are screwed into the

integrated “Sun Root” connector rails.

Next the photovoltaic modules are installed

and then the final steps of vegetation care

using sedum shoots and seeding are taken.

[a]

[b]

[c]

4. Installation

1 2 3

4 5 6

Depending on type, the “Sun Root”-mounted modules usually lie approximately 300 mm over the roof membrane. With “Root Flex” usage, a space of up to 500 mm is inser-ted.Depending on the desired yield, building situation (height, position, wind zone) and requirements of the construction plan, the photovoltaic/green roof combination can be plan-ned and designed with the help of Optigreen. Optigreen engineers will consider wind tunnel tests as well as applicable norms, an applied load overview, and system loads for the installation of photovoltaic modules and rela-ted green roof structures.

56.00 m

25

.00

m

52

TECHNICaL DaTaWeight*: 0.5 KN/cassette** 0.83 KN/m²** Height*: 1000 mm Width*: 600 mm Depth*: 60 mm (plus 30 mm suspension rail)

Material: aluminiumColour: Natural, lava-brown or RaL Vegetation form: Herbs - grasses - sedumEcological value: Maintenance costs: Cost factor:

* Measurements and weight of standard element. Other building-related dimensions possible.

** Saturated

BRIEF DESCRIPTION

The “Wall Garden” system solution is a facade-mounted greening system on a substrate basis without ground connection. The core unit of the Optigreen “Wall Garden” system solution is a high-grade, substrate-filled aluminium cassette system (Optigreen Facade Element) that can be delivered filled and, upon request, ready-planted. The horizontal suspension rails must be bolted onto the substructure before the prepared facade element can be attached to them.

Fixing system attachment to horizontal aluminium mounting rails prefitted by the building owner to structurally suitable facades and walls.

Special suction and capillary fleece For water storage and distribution.

CHaRaCTERISTICS The new patent-pending Optigreen “Wall Garden” system solution enables facades and walls on and in buildings to “green” simply and sustainably, creating a particular eye-catcher with many alternative designs.

Simple, beautiful and elegant


OPTIGREEN “WaLL GaRDEN” SYSTEM SOLUTION

Filling Special substrate for Wall Garden with 20 litres/m2 water storage. The top layer colour can be varied with the use of different coloured granular materials. Ready-made planting space for root-penetrable plant containers.

Plants Suitable species from the Optigreen plant assortment for external greening with and without planting plan.

Irrigation system and nutrient supplyCommercial irrigation system with building-related design is required. Electronic remote control of irrigation equipment optional.

53

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60 mm30 mm

Drip irrigation - automatic irrigation system with a remote control

- additional nutrient supply- Low water demand, little water loss

Suspension rail from aluminium- attachment directly to the structurally

suitable walls or onto a suitable supporting construction (on site)

- The facade cages can be mounted easily

Aluminium frame - aluminium frame with corners, side panels,

drainage channel and upper cover plate - Framing of the facade elements and therefore

a clean finish

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5

Suction and capillary fleece 600K- Stores and distributes the water evenly

to all facade elements- Rotproof and high tensile

4

Facade cage with plant pot- Substrate-filled aluminium cassette system- Surface colour of the aluminium cages can

be chosen- Standard measurements (1000 x 600 mm)

and custom made designs- Filled with special substrate, approx. 20 Litre/m²- Prepared gaps for the plants

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1

Drainage channel- From aluminium- For directed drainage of excess water

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Substructure with supporting rail, where necessary

90 mm

90 mm1

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6

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44

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1. The following characteristics distinguish the Optigreen “Wall Garden”:

High flexibility in top surface colour and fill of the aluminium facade element: In natural aluminium as standard, lava-brown or in all RaL colours. as an example the fill can be pumice stone (white), lava (brown), tuff (beige-brown) or brick chippings (red). all of these amount to a wide range of different design options.

Visually attractive appearance even without greening (as at the start or in the dormant period). The facade element is encased in an aluminium frame to create an attractive “Wall Garden” appearance.

In addition to the standard size of facade elements there are also custom-made designs to accommodate specific structural circumstances.

appreciation in value of property. Extremely weather-proof against UV radiation, frost

and wind influences. Non-flammable. The substructure to hold the facade element is to be

mounted by the facade fitter. Simple fitting of facade element and quick assembly. a substrate culture with many advantages: Improved

frost-resistance of plants, increased water retention and moisture buffering.

Planted facade elements in precultures are possible, but not absolutely essential, therefore higher flexibil-ity.

Larger diversity of proven plant species. These can be planted before delivery (on request in accordance with a planting plan).

The facade elements, the plants and the drip irrigation in the facade can be removed and replaced indepen-dently of each other.

The irrigation system can be replaced from the side if fitted in empty conduits.

Suitable for internal and external greening. also suitable as a partition element, screen and

garden border.

OPTIGREEN “WaLL GaRDEN” SYSTEM SOLUTION

55

2. Structural requirements and fixing systemThe basic prerequisite for a permanently secure installa-tion of the Optigreen “Wall Garden” system solution is a structurally suitable facade or wall construction (with and without insulation) capable of bearing an additional load of 80 kg/m². The Optigreen suspension rails are mounted and aligned using fixings approved for construction purposes. The Optigreen suspension rails can, when structurally fea-sible, be mounted directly onto the wall. If this is not pos-sible because of, for example, the height of the Wall Garden and the associated structural requirements, then bearing rails should be provided. The Optigreen suspension rails are fixed to the bearing rails.

Optigreen international aG provides ready-to-use (i.e. substrate-filled) Wall Garden elements with plant contain-ers. The elements can be delivered with or without plants depending on requirements. The Optigreen “Wall Garden” system solution is quickly and easily installed once the design and structural prerequisites are met and the horizon-tal suspension rails have been mounted.

You can design your Wall Garden within the scope of a plant selection suitable for your location, with spring and summer bloomers or evergreen plants to create your ideal “green look”.

Building services (power and water supplies) with a suffi-cient capacity in the form of an automatic irrigation system should be provided for the Wall Garden. Refer also to the “Notes for Maintenance.”

Maintenance of the Wall Garden can be carried out by trained Optigreen partner companies.

Naturally, facade gardens undergo a constant change of appearance throughout seasonal changes.

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1. Green roofs require a root barrierThis root barrier can be one of two types:1. The roof membrane is root-resistant in accordance

with FLL testing (or in accordance with DIN EN). Especially in the case of new buildings, root mem-branes, that are root-resistant and simultaneously achieve the functions of “sealing” and “Root Barrier” are chosen.

2. In addition to a (non-root-resistant) roof membrane, an Optigreen Root Barrier Membrane is applied. This, instead of the separate roof membrane, fulfils the func-tion of a root barrier. This method is usually chosen in cases of insubsequent greening, renovation, and greening with water accumulation of existing buildings.

The topic of roof membrane/root barrier is of significant importance when planning green roofs. Optigreen works closely with the manufacturers of various roof membrane systems and roofers in this field accordingly.

2. Notable points1. “Root-resistance in accordance with FLL” or

“DIN EN 13948” For all products used, a current and complete test cer-tificate must be provided. Further information and test-ing procedures can be found at www.fll.de. The current list of the industry association FBB (Fachvereinigung Bauwerksbegrünung e.V. ) regarding “root-resistant membranes and coatings (WBB)” is available on re-quest.

2. Total surface root barrier Even if a roof is only partially greened, a root-resistant barrier is recommended for the entire roof.

3. Homogenous connections between membranes The roof membrane and root barrier membrane must have a homogenous connection (welded or bonded); a simple overlapping does not meet the requirements of the FLL guidelines.

4. Edge coverings and wall connectors Pursuant to the guidelines and standards for green roof structures, root barriers must be installed to prevent roots from penetrating into the structure and to protect against consequent mechanical damage. The follow-ing connector heights above the green structure, or the gravel or panelled surface, are to be observed:

5. Breaking through the roof Root-resistant development is necessary, for example through the use of sleeves.

6. Protection against mechanical damage Required both at the connector points and on the sur-face. Different types of Optigreen Protection Fleece are available for different load classes (see product solu-tion “protection fleeces” on page 61).

7. High-quality project execution Coordination between those responsible for the roof membrane and those responsible for the green roof is necessary. Only trained specialists, such as Optigreen partner organisations for example, should be responsi-ble for installing the root barrier.

8. Vegetation with significant rhizome growth is to be avoided.

9. Additional security notes See following page.

Roof pitch 0 – 5° > 5°Edge coverings 100 mm 50 mmConnectors 150 mm 100 mm

OPTIGREEN PRODUCT SOLUTION “ROOT BaRRIER”

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4. Testing density/permeabilityFor necessary maintenance of the roof membrane or in case of damage, the density/permeability of the roof membrane can be tested using an electric pulse measurement:

With this method, a “circular pipeline” is placed around the entire edge of the Optigreen Protection Fleece Type RMS and then covered in gravel strips. Using this, any density-lacking points can be precisely located using the electric pulse measurement both before and after the application of various Optigreen system solutions.

The electric pulse measurement procedure is a maintenance or certification related procedure as well as one implemented for regular testing or in the case of damages.

Product name Material Strength Colour Characteristics

Optigreen Root Barrier Membrane 0.8 PVC-P 0.8 mm brown FLL-tested, weather proof, neither bitumen compatible nor UV resistant

Optigreen Roof Garden Tarp EPDM 1.0 / 1.2 / 1.5 mm black FLL-tested, bitumen, ozone and UV resistant

Optigreen Root Barrier Membrane 0.8 mm

3. Quality features The Optigreen Root Barrier Membranes have proven

themselves over 30 years of use in more than five million square meters of surface area, and have been successfully instealled by Optigreen partner organisations.

Over 30 years ago, Optigreen – then known under the company name “Optima” – was already developing the first successful tests for root resistance.

The Optigreen Root Barrier Membranes have successfully passed FLL tests and can without question be used as effective roof barriers on structures.

Optigreen Root Barrier Membranes are available in various materials.

Optigreen and its partner organisations can provide a project-specific guarantee of ten years dependent on the material, chosen root barrier and project execution at no extra costs for the construction builder.

PRO

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1. Roof membrane, root-resistant Wall connector with clamp profile and aluminium mount

2. Roof membrane, not root-resistant Wall connector with clamp profile and PVC-coated steel sheet (for use with Optigreen Root Barrier Membrane)

1 Fixing plug with self-piercing screw2 Durable elastic joint (silicone with primer)3 Optigreen Aluminium Clamp Profile4 Optigreen Aluminium Mount5 Gravel strips6 Optigreen Gravel Catch Selvedge7 Optigreen Substrate Type E8 Optigreen Drainage Layer Type Perl 2/109 Optigreen Protection and Storage Mat

RMS 30010 Roof membrane, root-resistant in accordance with FLL

2

13

4

5 76

89 10

3. Surrounds for below minimum connection heights

1 Fixing plug with self-piercing screw2 Durable elastic joint (silicone with primer)3 Aluminium clamp profile: Height above upper

edge of gravel: 150 mm at rising structure parts and 100 mm at roof edge coverings4 Aluminium mount5 Optigreen Triangle Water Conduit with channels

to roof drainage6 Gravel strips7 Optigreen Aluminium Partial Profile8 Optigreen Substrate Type E9 Optigreen Filter Mat Type 105

10 Optigreen Drainage Layer Type Perl 2/1011 Optigreen Protection and Storage Mat RMS 30012 Roof membrane, root-resistant in accordance with FLL

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1 Fixing plug with self-piercing screw2 Durable elastic joint (silicone with primer)3 Optigreen Aluminium Clamp Profile4 PVC-coated panel welded with root barrier

membrane5 Gravel strips6 Optigreen Gravel Catch Selvedge7 Optigreen Substrate Type E8 Optigreen Drainage Layer Type Perl 2/109 Optigreen Protection and Storage Mat RMS 300

10 Optigreen Root Barrier Membrane11 Optigreen Division and Protection Layer RMS 30012 Roof membrane, not root-resistant in accordance with FLL

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89 10 11 12

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OPTIGREEN “aCCESS” PRODUCT SOLUTIONS

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50 m

m

4. Terrace door access

1 Optigreen Substrate Type E2 Optigreen Filter Mat Type 1053 Optigreen Drainage Layer Type Perl 2/104 Optigreen Protection and Storage Mat RMS 3005 Roof membrane, root-resistant in accordance with FLL6 Panel lining7 Optigreen Drainage Gutter with grating and

zinc-galvanised gutter body, available with fixed height or adjustable height8 Spacer9 Cover plate

10 Lift gate

9

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5. Slim roof edge

4

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1 Root-resistant roof membrane2 Cover plate – Natural aluminium or anodised natural

aluminium, lacquered pursuant to RAL3 Statically effective fastening based on calculations4 Optigreen Drainage Gutter, height-adjustable

from 75 – 105 mm5 Optigreen Anti-Slip Safety Shoe6 Optigreen Anti-Slip Elements, 80 mm height7 Gravel strips8 Optigreen Structured Storage Fleece Type SSV 8009 Optigreen Substrate Type E

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1. Areas of application Fleeces are used in green roofs to perform a variety of functions and are described by various standards and guidelines:

Protects the roof membrane against mechanical damage

Separates materials from incompatible products (i.e. PVC and bitumen)

Filters fine particles out of the substrate Stores water and nutrients

2. Optigreen Type RMS 300 / RMS 500 Optigreen protection, division, and storage fleecesProtect the roof membrane or root barrier membrane against damage from light mechanical demands, separate the mate-rials of incompatible substrates from one another, and de-pending on the product and its function as protective fleece, store water.

Optigreen Protection and Storage Fleece Type RMS 300 with 300 g/m2: In many countries, minimum require-ments as protection fleece for roof membranes, separa-tion fleece for incompatible materials

Optigreen Protection and Storage Fleece Type RMS 500 with 500 g/m2: In some countries, minimum require-ments as protection fleece for roof membranes.

Characteristics Material: 100 % man-made materials (polypropylene,

polyester, acrylic, mixed in parts, recycled fibres) Strength class GRK 2 – 3 Rot-proof, not UV resistant Water storage: approx. 3 – 5 l/m2

Meets the requirements of the FLL Green Roof Guidelines

3. Optigreen Suction and Capillary Fleece Type 600 Kas a protective layer with capillary effect, reduces the amount of standing water in the structure of roof construc-tions with ponding/counter slopes.absorbs water and channels it via capillaries. also used for irrigation purposes beneath the photovoltaic modules (see “Solar Green Roof” section). High absorbency and channel-ling ability.

Characteristics Material: 100 % PES specialty fibre Width: 4 mm Weight: at least 600 g/m²

For the even distribution of water when a drip irrigation system is installed on a lightweight roof.

Type RMS 300

Type RMS 500

Type 600 K

OPTIGREEN “PROTECTION, STORaGE aND FILTER FLEECE” PRODUCT SOLUTION

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4. Optigreen Type RMS 900 / RMS 1200 Optigreen Protection Mats/FleecesProtects the roof membrane against damage from high me-chanical demands.

Optigreen Protection Mat Type RMS 900: Protective layer for accessible green roofs

Optigreen Protection Mat Type RMS 1200: Protective layer for accessible green roofs “spade-resistant”

Characteristics Material: 100 % man-made materials (polypropylene,

polyester, acrylic, mixed in parts, recycled fibres). Strength class GRK 4 Rot-proof, not UV resistant Water storage: approx. 7 – 10 l/m2

Meets the requirements of the FLL Green Roof Guidelines

5. Optigreen Type 105 Optigreen Filter Fleecealways used when a drainage system needs to be protected from fine particles

as a separation between drainage and substrate layers in multi-layered structures

as a separation between gravel strips and the green roof structure

as a filter in front of drainage gutters, among others In pedestrian and vehicular structures

Characteristics Usable opening O90, w ≤ 0.2 mm, filtration as a filter system for heightened demands Material: 100 % Polypropylene Strength class GRK 2 CE-recognised Rot-proof, not UV resistant

Type RMS 900

Type RMS 1200

Type 105

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1. Standards and guidelines FLL green guidelines

The responsibility of planning the necessary safety measures lies with the construction builder and his respective contracted planners and/or safety coordina-tors.

National guidelines must be followed

2. Optisafe One basic principle with four product solutionsThe patented Optigreen Fall Protection “Optisafe” is an EN-795-tested anchor device for flat roofs with a 0 – 5° roof pitch, to which one (Type Point, Type Gravel) or two people (Type Liner) can attach themselves during care and mainte-nance work as a safety measure. Optisafe does not penetrate the roof membrane and in-stead achieves its stability through the load of the Op-tigreen green roof system solution or through a gravel structure.

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Optisafe base plate with postsOptisafe security plateGuide cable (stainless steel)Optisafe protection fleeceRoof membraneOptigreen Protection and Storage Mat Type RMSOptigreen green roof build-up

Advantages of Optisafe Tested in accordance with EN 795 + CE-recognised No penetration of the roof membrane Not dependent on the substructure; for flat roofs With 0 – 5° roof pitch No thermal bridging Fast and cost-efficient installation

Durable fall protection Suitable for installation in frosty conditions Low minimum load in dry state:

From 80 mm single layer regular structure. Suitable for all Optigreen System Solutions, with exep-

tion to the Optigreen “Lightweight Roof” Optigreen System Solution “Economy Roof” requires a load calculation.

Gravel roofs from 50 mm

OPTIGREEN “FaLL PROTECTION” PRODUCT SOLUTION

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Optisafe Type P Point. Single anchorage point for green roofs (l.)

Optisafe Type G Railings. Durable railing for maintenance and exit routes on green and gravel roofs

Optisafe Type L Liner. Safety cable aligned parallel to the roof edge, for green and gravel roofs

Optisafe Type L Liner circulation set.Optisafe Type K Gravel. Single anchorage point for gravel roofs (r.)

The following are types of Optisafe fall protection for care and maintenance:

3. Optisafe Type G RailingsThe Optigreen Fall Protection Optisafe Type G Railing is, as an example, conceptualised for extensive green roofs and gravel roofs in order to enclose maintenance and exit paths. This is not designed for long-term use.

Optisafe Type G Railing Optisafe Type G Railing

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STEP 3: apply STEP 4: Load and guide cable – finished!

STEP 2: attachSTEP 1: Set

4. Optisafe installation plan We can provide you with an installation plan. Necessary information: roof pitch, roof plan with measurements and objects penetrating the roof or structures, roof height and planned Optigreen green roof system solution.

OPTIGREEN “FaLL PROTECTION” PRODUCT SOLUTION

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1. Areas of application Optigreen Edges/Surroundings are used as

Borders for raised patches of vegetation aesthetically pleasing and clean finish for the

Optigreen green roof structures Bordering of the Optigreen green roof structures for

paths, terraces and gravel strips Bordering of the Optigreen green roof structures,

when there is a lack of access measures at the roof edge.

2. Optigreen Edge Elements: Aluminium or stainless steelaesthetically pleasing and high-quality bordering of the Optigreen system structures as a border to other surfaces.

Material: aluminium or stainless steel Colour: Natural or in accordance with RaL Low weight: 1.6 KN/linear meters at 500 mm height available in various heights from 150 mm Durable

3. Optigreen Perforated Metal Plate BracketFor separation of the Optigreen green roof structure and gravel edge strips.

Material: aluminium Colour: Natural aluminium Light weight: 0.01 kg/linear meter Height: 55 – 120 mm. Length 2000 mm Bevelled, various material strengths, hole sizes

and shapes Durable

OPTIGREEN “SURROUND/EDGING” PRODUCT SOLUTION

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Optigreen Height Application area Weight [KN/m2] Water storage Maximum discharge products wet (without [litres/m2] capacity [l/min/m] refilling) at 2 % Roof pitch

FKD 10 10 mm Public Roof 0.075 0 33 (Page 42)

FKD 12 12 mm Public Roof 0.013 0 33 (Page 42)

FKD 25+ 25 mm Public Roof / inverted roof 0.075 5 79 (Page 42) FKD 25 25 mm Extensive 0.063 5 84 (Page 8, 12, 48) FKD 40 40 mm Extensive 0.112 9 138

(Page 16) FKD 60 60 mm Intensive, without water 0.278 25 44

accumulation (Page 34, 38, 42)

FKD 60 60 mm Intensive for Inverted Roof 0.270 25 44 UK (Page 34, 38, 42, 48)

Meander- 60 mm Extensive 0.20 – 0.35 17 + 15 42 panel (Page 20)

1. Notable points Climate change and the resulting increase in heavy rains, new drainage techniques, as well as the ever-growing col-lection planes of roof drainage and drainage lengths re-quire a secure drainage planning system. Depending on structural and vegetation-related technical details, a vari-ety of Optigreen drainage solutions are available.These are all based on the same basic goals.

2. Drainage systemPlastic drainage elements have proven themselves in build-ing drainage systems (walls and roofs) for many years. The multi-faceted list of products offered by Optigreen drainage systems covers all areas of the roof. Application area Drainage of extensive and intensive green roofs and traffic areasMaterialPlastic (recycled HDPE)HeightDepending on product, 10 – 60 mm

Characteristics Drainage in accordance with DIN 4095 Secure and targeted channelling of surplus water Water deposited in troughs: 3 – 17 litres/m2

Light weight also suitable for non-pitched roofs:

Bridging of standing water from ponding

Safe drainage of surplus water; discharge delay relieves the sewer system and enables prolonged storage of water on the roof, making the water available to vegetation. The primary concern is the secure, traceable, and calcula-ble drainage of the surplus water in accordance with DIN EN 12056-3 and FLL green roof guidelines. Only in this way can damages to buildings through high water loads on the roof be avoided.

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Overview Optigreen drainage systems

OPTIGREEN “DRaINaGE” PRODUCT SOLUTION

1 Storage of water2 Drainage openings to drainage channels3 Secure drainage of surplus water

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3. Bulk material for drainage Optigreen grew in popularity with its bulk material for drainage type “Perl” and, for over 30 years, has usedit in its proven multi-layer system solutions.Application area Extensive and intensive green roofs.MaterialMineral-rich bulk material, varying regionally, such as expanded shale, expanded clay or lava. Granulation of 2 – 10 mm for extensive green and intensive green roofs without water accumulation; partial granulation of 8 – 16 mm for intensive greenings with water accumulation.

Characteristics Natural material, easily recyclable, measurement

of the drainage in accordance with DIN 4095 Secure drainage of surplus waters Drainage system for flat roofs Natural water storage capacity, ensuring water is

accessible to vegetation: approx. 8 litres/m2 at an installation height of 50 mm (storage in pores). Can be supported by the Optigreen Triangle Water Conduit for longer drainage lengths.

Easy levelling of roof unevenness

Levelling of roof unevenness

Perl 8 – 16 BS

Perl 2 – 10 BS

Perl 2 – 10 BT

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3

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4. Triangle Water Conduit The Optigreen Triangle Water Drainage System consists of the Optigreen Combination Control over the roof drainage outlet and the respective Optigreen Triangle Water Conduit profiles.The Triangle Water Conduit Profiles are attached to the Combi Inspection Chamber in a Y-shape and are then fixed to the side walls. This ensures that the surplus water is channelled to the roof drainage outlet quickly and directly. approximately 200 m2 of green roof area per roof drainage outlet can be securely drained in this manner.The Triangle Water Conduit Profiles support the drainage process of the Optigreen Drainage Layer Type Perl and the Optigreen Extensive Single Layer Substrates Type M, with which they are covered. They separate the surplus water from the bulk materials of the drainage layer and channel it to the roof drainage outlet, free of unclean particles.

Advantages of the Optigreen Triangle Water Conduit System:

Targeted and resistance-free drainage of surplus water The height of the system structure above remains

unchanged, therefore ensuring a larger root-penetra-ble area

No flooding of the profile as happens with side piping Simple and variable installation

For a square roof with a surface area of approximately 200 m2, with a roof drainage outlet, a Combi Inspection Chamber and 24 linear meter Triangle Water Conduit Profile is sufficient (see figure). For longer drainage lengths, from approximately 15 m, additional Triangle Water Conduit Profiles are installed in the direction of water flow as “branch channels” and connected to the Combi Inspection Chamber.a general rule for long drainage lengths is as follows:0.3 meters Triangle Water Conduit Profiles per m2 of green roof.

Water drainage capacity for 0 % for 2 % for 3.5 %[l/min] in Type M for 24 m profile: 72 160 210 in Perl 2-11 for 24 m profile: 192 240 360 with TSK Profile: 350 610 672

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Optigreen Triangle Water Conduit1 Optigreen Combi Inspection Chamber2 Optigreen Triangle Water Conduit Profile3 Optigreen T-piece4 Optigreen Triangle Fastening Piece


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5. Linear drainage with the TSK ProfileFor large roof areas with extreme drainage lengths, the extra heavy waste water r5/5 can overwhelm the drainage capabilities of the triangle water-leading system.In such a case, the Optigreen TSK Triangle Collection Channel can be used as a replacement. as a larger collection channel, the TSK takes extra water from the Triangle Water Conduit Profiles and channels it to the triangle Maxi Inspection Chamber Type TMK.The Triangle Water Conduit Profile, TSK Profile and Maxi Inspection Chamber are all especially suited for the high drainage needs of the pressure drainage systems.

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Point drainage1 Maxi Inspection Chamber Type TMK2 Triangle Water Conduit Profiles3 Triangle Collection Flue Type TSK

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6. Inspection ChambersThe green roof guidelines specify that drainage points must be accessible at all times and that inspection cham-bers must be used for this purpose. The Optigreen Combi Inspection Chamber is suitable for both extensive and in-tensive green roofs.Despite their light weight, the Optigreen Combi Inspec-tion Chambers are completely stable and are easily and are quickly and easily to construct, as needed on construc-tion sites. The lid of the combination control shaft contains drainage openings that are lockable, making them safe against the danger of blowing away. Material: aBS man-made materials. Ground edge can be welded with PVC root barrier membrane.Size: Shaft 350 x 350 mm Base 470 x 470 mm Height 110 mm, extendable in 100 mm increments Maximum height: 100 cmResistance: Water, humic acids, UV rays.Weight: 2.5 kg at 100 mm shaft; every additional 100 mm in height, plus 1 kg

350 mm

100 mm

1 Optigreen Combi Inspection Chamber2 Optigreen Triangle Water Conduit Profile

Optigreen Combi Inspection Chamber with aluminium lid in lawnsand pathways

Optigreen Combi Inspection Chamber with lid of aBS man-made materials in green roofs


Diagram assembly of theOptigreen Combi Inspection Chamber

Extensive: 100 mm height Extensive: 200 mm height Intensive: 400 mm height

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7. Drainage guttersThe Optigreen Drainage Gutters are suitable for all areas of application in which surplus water needs to be drained quickly and in a targeted manner: Terraces, facades and other rising structures as well as in the eaves of pitched roofs. Gutters are especially necessary for barrier-free constructions. They consist of galvanised steel, stainless steel or aluminium and are available in varying heights and forms.

8. Standing waterThe following technical measures for drainage may be necessary in order to avoid standing water and water logging:

Use of an Optigreen Drainage System such as the Type FKD 25, 40 and, where indicated, a filter fleece.

Relatively light structure Optigreen Economy Roof system solution see page 8

and especially Optigreen Nature Roof system solution see page 16

Increasing the layer height of the Optigreen Drainage Layer Type Perl. It is important to note the relative weight increase.

10. Drainage for pitched roofsPitched roofs with a roof pitch greater than 5° generally do not require a separate continuous drainage layer but the surplus water in the eaves after storage needs to be channelled without backing up and without fine particles. Towards this end the Optigreen Structured Storage Fleece Type SSV 800 is installed in the eaves under the system structure. The installation width is approximately 1/5 of the drainage length of the eaves to the ridge but must be at least 2 m. Drainage lengths of a maximum length of 20 m can be expected. Drainage lengths beyond this point require additional site-specific measures.


9. Pressure drainageThe following points should be observed in the case of pressure drainage systems:

Green and non-green surfaces should be drained separately (must be taken into account for drainage planning)

alignment of the drainage planning/green roof in terms of the necessary discharge coefficients

Gravel edges as sanitary strips around the Optigreen Combi Inspection Chamber

Regular maintenance of the green roof Green areas with more than 300 m2 must be individu-

ally calculated for drainage Optigreen system solutions with water accumulation

are to be drained separately

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1. General notes although all Optigreen system solutions are conceptual-ised to be light-weight while storing a great deal of water, additional watering is sometimes necessary, above all for intensive green roofs. Various Optigreen irrigation strate-gies ensures an economical handling of water as a ”raw material”.

Water accumulation in the drainage layer Automatic “underground” irrigation

Despite the proven advanced technology of automatic irrigation, it is necessary to additionally water vegetation from above by hand or sprinkler in the early phases of vegetation growth. This is because vegetation roots are initially not long enough to reach the underground irrita-tion system.

2. Water accumulation in the drainage layerWithin intensive green roof systems the storage of surplus water via backup in the Optigreen Drainage Layer is the most economical method of water provisioning. The roof drainage outlet is set to the desired height of 30 – 70 mm using the Optigreen Backup Set. additionally, the Optigreen Drainage Layer Type Perl 8/16 should have the relative installation strength of 120 – 150 mm.It is important to note that the maximum standing water in backup must always lie at least 50 mm beneath the Optigreen Filter Fleece. If the Optigreen automatic Irriga-tion is added, this distance will increase to 70 mm. This works against the waterlogging of the Optigreen Substrate lying above. The water from the backup is led to the higher root-penetrated Substrates in a capillary fashion.

350 mm

70 mm

100 mm

400

mm

Optigreen Substrate Type i

Optigreen Filter Mat Type 105

Optigreen Drainage Layer Type Perl 8/16

Optigreen Triangle Water Conduit

Optigreen Protection and Storage Mat RMS 500

Root-resistant roof membrane– maximum backup height 100 mm over the sealing; otherwise additional Optigreen Root Barrier Membrane

Vapour barrier

123456

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Water cycle for intensive green roofs with water accumulation

OPTIGREEN “IRRIGaTION” PRODUCT SOLUTION

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3. Automatic underground irrigationOptigreen Automatic Irrigation in combination with the Optigreen Drainage Layer Type Perl 8/16The Optigreen automatic Irrigation should be seen as an addition to water accumulation. When water from the back-up system is insufficient, fresh water needs to be added. The principle underlying the time-proven Optigreen auto-matic irrigation is simple and reliably functional: the fresh water valve is opened or closed by means of the swimming panel.

In other words, when standing-water levels decrease in dry times, the swimmer drops and opens the access valve – in this way a necessary minimum of standing water can be maintained. The distribution of water in the Optigreen Drainage Layer Type Perl 8/16 is accomplished through the Optigreen Triangle Water Conduit Profiles, which are at-tached via the irrigation system. Situated in the Optigreen Combination Control Shaft, the Optigreen Irrigation auto-mation does not require any extra power supply. The water feed must simply be inspected, and turned on or off before and after the winter months. Roof gardens measuring up to 400 m2 can be watered using the Optigreen automatic Irrigation System.

Automatic underground irrigation Technical data and requirements for other factors:

Standing water pressure max. 6.0 bar Flowing water pressure min. 0.7 bar Water pressure management connection 1/2 inch Installation pre-fabricated Optigreen installation

Elements (jacket pipe) through the roof membrane by feeding through the ceiling

1 Lid of Optigreen Combi Inspection Chamber2 Inspection Chamber side pieces for irrigation3 Optigreen Triangle Water Conduit Profile

Optigreen Automatic Irrigation:4 Connection for water pressure management5 Swimming plate6 Directing the water pressure management via jacket pipe. Alternative to side water pressure connection

7 Floor plate: Optigreen Combi Inspection Chamber

The inspection chamber for irrigation is approx. 300 mm higher than the green roof structure because the supply line valve must be positioned at least 185 mm above the top substrate in accordance with technical guidelines.

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1. Optigreen substrate concept Good green roof providers ultimately demonstrates their competence with the roof substrates that they choose to use in the creation of a successful green roof.Our substrates are ideally suited for the different system structures we have developed. Only the proper substrate can ensure the functionality of the system structure. Op-tigreen can look back on extensive experience in develop-ment and practice:In the mid-seventies, the company developed and installed its first substrates for roof greening. The green roof mar-ket has undergone further developments: New building methods have appeared, requirements have changed, and customers expect high quality systems for cost-efficient prices. The purpose of the Optigreen substrate concept is to pro-vide the best, most cost-efficient, and readily available substrate. Additionally, the transport methods should fo-cus on minimising the CO2 emissions.The formula depends on the correctly balanced mixture of locally available materials. The quality of an Optigreen Substrate, in comparison to those of other providers, depends on the characteristic values specified by Opti-green. These characteristic values fulfil the requirements of the green roof guidelines of the FLL in Germany. In areas where no guidelines exist regarding characteristic values, Optigreen sets guidelines following its own standards. This concept is ecologically responsible, as well as important in terms of saving building materials and resources.

2. Optigreen Substrates Proven and durable functionally Optigreen basic and

special substrates Site-specific, individual solutions Secure drainage and high stability of the vegetation due

to the high content of mesh-like mineral stabilisers Durable air porosity for optimal root penetration as well

as adequate growth through good grain size gradation High nutrient and water-storage capacity with good

water permeability Tread resistance Use of ecologically compatible natural additives of

mineral and organic origins Certified recycled material from selected suppliers Meets fertilisation standards of the green roof

guidelines Material logistics determined by the construction site

The following delivery methods for Optigreen Substrates are available:

Loose bulk Big bag 1.5 – 2.0 m3

Blown from silo trucks Bagged cargo in 20 and 40 litre sacks

The roof logistics generally determine the delivery method. Whether it is a height of 50 meters, or a distance of 120 meters in an interior courtyard. Not every substrate is suitable for blowing on to the roof. The substrate formula are not only used for plants, but also for logistic require-ments, such as whether it is suitable for blowing on to the roof. Optigreen has cooperated for many years with reliable logistics partners in order to bring the material to the site and roof.

OPTIGREEN “SUBSTRaTES” PRODUCT SOLUTION

75

3. Excavated material? No thank you!Years of practical experience have shown us that local excavated material can be used only in exceptional cases and even then not without special modifications and analy-ses. The following reasons speak against the use of local soil on roofs:

Weight at approximately 20 KN/m3, soil weighs twice as much

as special roofing substrates Unwanted foreign growth

Regenerative root and rhizome parts, shoots and seeds are contained in the soil, and their subsequent remov-al, if even possible,requires costly care measures

Water permeability Clay and loam soils, in particular, have a water perme-

ability that does not fulfil green roofing guideline requirements. The results are water-logging and an irregular supply of water to the vegetation

Fine particles Eroded fine particles can clog the filter fleece, which

can lead to waterlogging Logistics

as a rule, local soils are not blowable, meaning it is not possible to blow them onto the roof. Other, potentially more expensive application methods must be chosen

Top soil too fine: Water permeability is lacking

Top soil toofine: water permeability is lacking

Unwanted foreign growth due to root pieces and seeds in the top soil

Unwanted foreign growth due to root pieces and seeds in the top soil

Unwanted foreign growth because of root pieces and seeds in the top soil

4. Basic substrate differences “Low Density” / “High Density”Optigreen basic substrates can be differentiated as “Low Density” and “High Density” depending on the weight of the completed substrate mix. The required characteristics of the green roof guidelines and the Optigreen require-ments profile are adhered to in both low density and high density substrates. Low density and high density substra-tes differ in appearance, on the basis of the different mate-rials used, and in weight. The “Low Density” substrate type is comprised of light materials such as expanded shale, expanded clay and pumice. The “High Density” substrate type, on the other hand, is comprised of heavier materials such as lava, etc.

76

5. Basic substrateFor “classic” extensive and intensive greening,the following Optigreen basic substrates are suitable.

A. Optigreen Extensive Single Layer Substrate Type M (“l” low density and extra low density)

For extensive green flat roofs in single layer construction and with restricted plant variety (primarily different types of sedum).

Predominantly mineral components, low organic matter content.

Combined drainage and vegetation layers.

B. Optigreen Extensive Substrate Type E (“l” low density)

For extensive green flat roofs with a multi-layer construction (and an additional drainage layer), with average to high plant diversity.

For extensive green pitched roofs with a single layer construction and average to high plant diversity.

Primarily mineral components but with higher organic content than the Optigreen Extensive Single Layer Substrate Type M and a higher maximum water- retention capacity.

C. Optigreen Intensive Substrate Type i (“l” low density and “h” high density)

For intensive greening with a multi-layer construction (and an additional drainage layer) with a broad suitabil-ity spectrum, as well as a great variety of plants (peren-nials and woody plants).

High maximum water capacity. Organic matter for nutrient storage and buffer capacity. also suitable for outdoor plant containers.

D. Optigreen Aeration Substrate Type U (“l” low density and “h” high density)

Base layer (“subsoil”) to be covered with Optigreen Intensive or lawn substrate.

Improves the stability of shrubbery and trees. Supports root aeration and penetration in deeper

layers through very low organic matter content, therefore counteracting undesirable decay processes.

E. Optigreen Lawn Substrate Type R For neat and accessible lawns (= intensive greening) in accordance with DIN 18035 part 4.

High maximum water capacity with good permeability. Tread resistant due to interlocking components.

F. Optigreen Low Density Substrate Type L (extra light) For single layer extensive greening on flat roofs with a lightweight construction and little biodiversity.

Very light substrate. Mineral components only. Combined drainage and vegetation layer. High water storage capacity.

OPTIGREEN “SUBSTRaTES” PRODUCT SOLUTION

A.

B.

C.

D.

E.

F.

77

Characteristic values of OptigreenBasic substrate

Optigreen product name

Code Properties 3) Granulation distribution 1)

Clay + silt (< 0,063 mm) Gravel in accordance with FLL grading curve (d > 4 mm)

Volumetric weight (gross density) 7)

Max. water capacity condensed (data for static maximum load) Condensation in dry conditions (data for system security) Water/air balanceMax. water capacity air content with max. water retention (MWR) air content at pF 1.8 Water permeability at mod. Kf

pH value (CaCl2) Salinity (water extract) Organic matter 4)

Available nutrient quantities 5) 6)

Nitrogen (N) Phosphate (P2O5) Potassium (K2O) Magnesium (Mg)

Unit

Mass %Mass %

g/cm3

g/cm3

Vol.%

Vol.%Vol.%mm/min

pHg/l

g/l

mg/lmg/lmg/lmg/l

The properties are in accordance with those of the FLL (2008)

1) Grading curve according to FLL (2008)2) No FLL specifications available (2008)3) In accordance with FLL testing methods (2008)4) Higher values are possible in dense, slowly convertible organic

matter5) Higher values are possible in compost or other nutritious matter6) Nutrient supply occurs in conjunction with completion and deve-

lopment care7) The given weight limits are reference points which are meant to

serve as technical orientation points. Due to our environmentally-friendly and decentralised substrate concept, substrate materials vary regionally and may therefore have varying properties and weights from one location to the next. If a site-specific calculation for minimum dry weight is required for the purposes of system security or a maximum wet weight calcu-lation is required for statistical reasons, requests can be made to Optigreen

Intensive Substrate Light

1)i/l

Intensive Substrate Heavy

1)i/h

LawnSubstrate

2)R

≤ 20≤ 50

1.3 – 1.7

0.9 – 1.4

≥ 30

≥ 10??≥ 0.3

5.5 – 7.5≤ 3.5

≤ 90

≤ 80≤ 200≤ 700≤ 200

Extensive Single Layer Substrate Light1)M

≤ 10≤ 75

1.1 – 1.3

0.85 – 0.95

≥ 20

≥ 102)≥ 60

6.0 – 8.5≤ 3.5

≤ 40

≤ 80≤ 200≤ 700≤ 200

Extensive Single Layer Substrate Extra Light1)L

≤ 10≤ 75

0.8 – 0.9

0.45 – 0.7

≥ 35

≥ 102)≥ 60

6.0 – 8.5≤ 3.5

≤ 40

≤ 80≤ 200≤ 700≤ 200

Extensive Substrate Light

1)E

≤ 15≤ 50

1.2 – 1.45

0.75 – 0.9

≥ 35

≥ 10≥ 20≥ 0.6

6.0 – 8.5≤ 3.5

≤ 40

≤ 80≤ 200≤ 700≤ 200

aeration Substrate Light

2)U/l

aeration Substrate Heavy

2)U/h

Requirements and characteristic values of Optigreen Substrates

OPTIGREEN “SUBSTRaTES” PRODUCT SOLUTION – BaSIC SUBSTRaTES

≤ 15≤ 60

0.8 – 1.8

0.55 – 1.4

≥ 25

≥ 10≥ 15≥ 0.3

5.5 – 8.5≤ 2.5

≤ 40

≤ 80≤ 200≤ 700≤ 200

≤ 20≤ 40

1.2 – 1.8

0.6 – 1.3

≥ 45

≥ 10≥ 20≥ 0.3

6.0 – 8.5≤ 2.5

≤ 90

≤ 80≤ 200≤ 700≤ 200

78

Vegetation planting and approvalThe “green” part of a green roof can be planted and estab-lished on the roof top in a variety of ways. The four meth-ods described here differ in regards to cost, structural conditions, and how fast the roof is expected to green and bloom. as a rule, the months of april to June and Septem-ber to October are best suited for vegetation planting.

1. Hydro-seedingAreas of application: Extensive greeningFor use with the Optigreen System Solution “Economy Roof”, possibly also with the system solutions “Nature Roof” and “Retention Roof”.

Brief descriptionThis process is applied mostly with large extensive green-ing in single layer constructions. This method mixes Optigreen Seed Type a, adhesive, and water with Optigreen Germinating Substrate; the mixture is then sprinkled on the roof. Prior to this, sedum shoots (approx. 50 g/m2) are scat-tered by hand.

Characteristics Cost-efficient type of vegetation planting Uniform distribution of seeds Good protection against wind and rain erosion approx. 60 – 80 % coverage after one year Suitable for roof areas from approx. 1,000 m2

Approval* at 60 per cent, projective coverage

In other months, maintenance costs are necessarily higher to prevent risk of defaulting. The question of if and when the vegetation establishes and grows depends largely on weather, completion and development care (see page 88).

2. Dry seedingAreas of application: Extensive greeningOptigreen System Solution “Nature Roof”, also for system solutions “Economy Roof”, “Retention Roof” and “Solar Green Roof” with surface areas under 1,000 m2.

Brief descriptionThis process is usually applied on smaller extensive green-ings with Extensive Substrate Type E or Extensive Single Layer Substrate Type M in combination with Germinating Substrate. In the process approximately 1 g/m2 Optigreen Seed Type a (on Type M) or Type E (on Type E) and approxi-mately 50 g/m2 of sedum shoots are scattered and watered by hand.

Characteristics Cost-efficient means of vegetation planting Ca. 60 – 80 % coverage after one year Recommended for smaller surfaces

(less than approx. 1,000 m2) Possible to seed using only sedum shoots,

in which case approx. 70 – 90 g/m2

Higher maintenance costs necessary before approval than with hydro-seeding

Approval* at 60 per cent, projective coverage

* “approval-ready status”: The “approval-ready status” as defined in the green roof guidelines is usually attained after approximately one year and is only

applicable in conjunction with proper maintenance and care contract. a first approval should follow the installation of the green roof structure including

the installation of the vegetation and seeding. This approval is simultaneously the final approval if no maintenance and care contract is established.

OPTIGREEN “VEGETaTION PLaNTING/aPPROVaL” PRODUCT SOLUTION

79

3. Planting Areas of application

Extensive greening Optigreen System Solution “Nature Roof”, possibly also Optigreen system solutions “Retention Roof” and “Solar Green Roof”

Intensive greening Optigreen System Solution “Garden Roof” and also “Landscape Roof”

Brief descriptionFor extensive greening, the planting of small cluster peren-nials in the substrate is recommended. The requirements for extensive greening are approximately 15 – 25 plants per square meter with a pot size of 30 mm. For an intensive green roof, the requirements depend on the chosen type of vegetation (perennials and woody plants) and their cluster size.

Characteristics Installation in landscaped extensive green roofs,

especially if they are visible Used for intensive greenings approx. 60 – 80 % coverage after one year Higher costs than the seeding method

Approval* Upon achievement of appropriate growth in the volume

described

4. Vegetation mats/turfAreas of application

Extensive greenings Optigreen system solution “Pitched Roof” and

“Lightweight Roof”, possibly also Optigreen system solutions “Nature Roof”, “Retention Roof” and “Solar Green Roof”

Intensive greenings Optigreen system solutions “Garden Roof” and “Landscape Roof” with recreational lawn surfaces

Brief descriptionPre-cultivated Optigreen Vegetation Mats and Optigreen Turf with pre-grown vegetation types are laid on the substrate and watered.

Characteristics Immediate surface finalisation and a complete green

roof with approx. 80 – 100 % coverage Serves as wind drift/erosion protection in edges and

corners of extensive green roofs Counters erosion in steep green roofs Optigreen Turf is preferable over seeding for recreational

lawn surfaces Most cost-intensive variety of vegetation but also the

fastest means of vegetation establishment Optigreen Vegetation Mats with varying lining materials

for different areas of application: Decomposable natural fibres for flat roofs and slightly pitched roofs (to 15°), rot-proof claw fabric mats for steep roofs from 15°

Approval* at 80 per cent (vegetation mats) or 95 per cent (turf)

coverage and secure root growth

Optigreen Vegetation Mat Type SM/G: Sedum moss on decomposable load-bearing fabric carrier

Optigreen Vegetation Mat Type S/G: Sedum on decomposable load-bearing fabric carrier.

Optigreen Vegetation Mat Type SKG/G: Sedum/herbs/grasses mainly on decomposable load-bearing fabric carrier.

Optigreen Vegetation Mat Type SM/KG: Sedum moss on rot-proof claw fabric mats.

80

1. Care phases Nothing grows without care – the same is true for green roofs. Even a non-green gravel roof needs to be maintained once a year. It isn’t any different for green roofs!

Without regular care and maintenance even the best plan-ning and execution of a green roof installation will no longer be apparent due to deterioration

Care and maintenance with the help of Optigreen partner organisations is cost-efficient and highly recommended. Even in the planning and proposal stages, it is important to consider and describe in detail the plans for care and maintenance

To simplify care and maintenance duties, water connec-tors, access devices, and fall protection (see “Optisafe” on page 62) should be included in plans

Care of green roofs is divided into 3 phases:1. Completion care:This is included with the installation of the green roof and continues until the final approval according to a defined “approval-ready state” (see page 86/87). at approx. 60 % density, the vegetation mat is not fully completeDuration: approximately 12 – 15 months.2. Development care:Follows completion care and continues until target vegeta-tion coverage has reached approx. 90 %. Duration: approximately 2 – 4 years.3. Maintenance care:after the target vegetation coverage has been reached, maintenance care is necessary. Duration: Continuous

The care and maintenance measures are, as a rule, the same in all phases of care. They differentiate in need according to the development of the greening and in the intensity of the measures described below.

2. Measures The following care and maintenance measures should be carried out as needed for both extensive and intensive green roofs:

Watering (primarily during the growth phase) Removal of undesired growth Mowing as needed Fertilising with Optigreen Opticote Slow Release

Fertiliser Removal of cuttings, leaves, and refuse Re-seeding or re-planting areas, re-filling the substrate Vegetation protection Keeping borders, safety strips and paved areas clear Cleaning of gutters, inspection chambers, roof drainage

outlets, etc

Intensive greenings may also require these additional tasks:

Cutting Mulching Winter protection measures Correction and/or removal of anchors from bushes and

woody plants For accessible lawn surfaces:

De-thatching, aerating, sand-filling Maintenance of irrigation facilities

Maintenance extensive greening: approx. 1 – 2 times per yearMaintenance intensive greening: approx. 3 – 10 times per year

No care without fall protection Fertilisation is necessary here; the reddish hue of the sedum vegetation suggests a lack of nutrients

OPTIGREEN “CaRE aND MaINTENaNCE” PRODUCT SOLUTION

81

Keeping the drainage shafts clearRemoval of unwanted foreign growth

Benefits of Opticote Uniform nutrient supply over the entire growth period No over-fertilisation due to the full coating of the fertiliser

Opticote takes effect when plants need nutrients – in cases of excess dampness and higher temperatures

No elution of nutrients into the drainage system due to slow release

Composition of Opticote:Nitrogen N 18 %Phosphate P2O2 6 %Potassium oxide K2O 8 %Magnesium oxide MgO 2 %

Required application for Optigreen green roof [per year]:Extensive greening new system 35 g/m2

Extensive greening care 35 g/m2

Intensive greening new system 60 g/m2

Lawn carrier layer new system 60 g/m2 Intensive greening care 50 g/m2

3. Optigreen Opticote Slow Release Fertiliser Opticote is a fully-coated long-term fertiliser with an effec-tive period of approximately 8 – 9 months. The length of the effective period is dependent on temperature. The nu-trient release occurs according to the principle of diffusion and is controlled by the regulator in the fertiliser coating.

Regulator

Synthetic resin coating

Nährstoff-auflösung

Nutrient release

Water entry

Diagram: How Optigreen Opticote Slow Release Fertiliser works

1. Areas of application Due to climate change, a higher number of roofs are being exposed to strong wind forces. The current DIN 1055 part 4 “wind loads” discusses this development in details. In regard to roof greening, it is therefore now important to distinguish between wind drift protection and erosion protection and to plan for both in the planning phase.

2. Wind drift protectiona green roof structure not only requires loading for site and erosion protection, it must also be protected against wind drift. The green roof surface is considered wind-secure if the wind forces are unable to carry away individual grains of gravel or roof substrate. The extent of wind drift protec-tion can be tested in a wind tunnel.

3. Site and erosion protection Site and erosion protection is concerned with fixing loose and only partially-secure elements of the roof membrane via loading with gravel, panels, or greening. Wind suction powers are enacted on the substructure and the roof mem-brane. The counteraction of wind powers can be utilised in green roof systems along with a specific reduction factor.

4. Measure for wind drift/erosion protectionIn order to protect green roof structures against wind drift and erosion, Optigreen recommends the application of the following technological measures, which should be consi-dered and outlined in the planning and proposal phases:

Gravel strips at the edge and corner areas. Extremely exposed buildings should additionally install gravel-filled lawn pavers to prevent the top surface from blowing away.

Depending on the building’s location, placement of pre-cultivated vegetation mats may be necessary especially at the edge and corner areas of the greening.

In the interior areas H and I it is generally sufficient to secure the surface against wind drift by spraying with adhesive (as found in Optigreen Hydro-Seeding). The additional use of vegetation mats is advisable for high buildings in wind zones 3 and 4, and for especially exposed buildings.

Regular professional care and maintenance

Galvanised steel wire fabricBouldersInterlocking lawn pavers

123

12

5. Securing woody plants and furnishingsadditionally, for intensive green roofs the securing of woody plants and furnishings (such as bowers) must be addressed.

3

OPTIGREEN “WIND DRIFT/EROSION PROTECTION” PRODUCT SOLUTION

82

83

1. Structural requirementsStructural calculations must consider the weight of the green roof construction as additional load – this does not include the snow load, dependent on the snow zone (DIN 1055) and the traffic load. a distinction needs to be made between the load at maximum water saturation in order to determine the maximum possible load vs. the load in a dry state to determine the necessary minimum additional load needed for wind drift/erosion protection. Interestingly enough, a simple and cost-efficient extensive green roof (Optigreen “Economy Roof” system solution) weighs only as much as a gravel roof! In fact, the Optigreen “Lightweight Roof” weighs just half as much as a gravel roof! a rule of thumb: 10 mm green roof approx. 0.13 KN/m2 (when saturated/waterlogged).

2. Optigreen system solutions

Surface loads of vegetation types (according to FLL) KN/m2

Moss-sedum 0.1Sedum-grass-herbs 0.1Grass-herbs (dry lawns) 0.1Grass-herbs (grass roof, fertilised meadow) 0.15Wild Perennials 0.1Wood-plants 0.15Woody plants up to 1.5 m 0.2Lawns 0.05Perennials and woody plants 0.1Perennials and shrubbery up to 1.5 m 0.2Shrubbery to 3 m 0.3Large shrubbery to 6 m 0.4Small trees to 10 m 0.6Trees to 15 m 1.5

3. Surface loads of vegetation types 4. Loads of the substrates and drainage systemsSee page 66/67 (drainage) and 76 (substrate).

OPTIGREEN TRaDE INFORMaTION “STaTICS”

* Reference values

Optigreen Weight [KN/m2]* Weight [KN/m2]*system solutions at max. water saturation in dry state

Economy Roof 0.9 (Low Density Type) – 1.4 (High Density Type) 0.65 (Low Density Type) – 1.0 (High Density Type)

Lightweight Roof 0.5 0.3 Nature Roof 1.0 (Low Density Type) – 3.0 (High Density Type) 0.65 (Low Density Type) – 2.0 (High Density Type)

Retention Roof 1.2 (Low Density Type) – 1.5 (High Density Type) 0.8 (Low Density Type) – 1.6 (High Density Type)

Pitched Roof 1.0 (Low Density Type) – 1.9 (High Density Type) 0.7 (Low Density Type) – 1.3 (High Density Type)

Garden Roof 3.2 (Low Density Type) – 6.8 (High Density Type) 2.5 (Low Density Type) – 4.6 (High Density Type)

Landscape Roof 7.0 (Low Density Type) – 13.0 (High Density Type) 5.0 (Low Density Type) – 10.0 (High Density Type)

Public Roof 2.5 – 7.0 – Solar Green Roof 1.0 (Low Density Type) – 1.4 (High Density Type) 0.65 (Low Density Type) – 2.0 (High Density Type)

84

Pressure resistant thermal insulation required Highly effective vapour barrier required Compatible for greening with all

Optigreen system solutions

1. Warm roof build-up to a concrete substrate

2. Cold roof (aerated roof)

3. Warm roof build-up to a metal profiled deck

Sufficient aeration must be guaranteed Greening possible with every

Optigreen System Solution

Greening possible with every Optigreen System Solution

P. 8

P. 12

P. 16

P. 20

P. 26

P. 34

P. 38

P. 42

P. 50

P. 8

P. 12

P. 16

P. 20

P. 26

P. 50

P. 50P. 8

P. 12

P. 16

P. 20

P. 26

123456

789

Vegetation layerOptigreen SubstrateOptigreen Filter MatOptigreen Drainage LayerOptigreen Protective Layer RMSRoof membrane(root-resistant according to FLL)Thermal insulationVapour barrierConcrete layer

123456

789

Vegetation layerOptigreen SubstrateOptigreen Filter MatOptigreen Drainage LayerOptigreen Protective Layer RMSRoof membrane(root-resistant according to FLL)Protection and division layerSubstructureThermal insulationConcrete layer10

123456

789

Vegetation layerOptigreen Substrate Type EOptigreen Filter MatOptigreen Drainage LayerOptigreen Protective Layer RMSRoof membrane(root-resistant according to FLL)Protection and division layerThermal insulationVapour barrierSupporting structureTrapeze sheet

10

OPTIGREEN TRaDE INFO “ROOF CONSTRUCTIONS aND GREENaBILITY”

1

23

45

6

7

8

9

1

23

45

67

8

9

10

12

34

56

789

10

85

5. Double insulated roof

Create roof pitch where possible Wind drift/erosion protection must

be observed Pressure resistant approved thermal

insulation required Free diffusion of water vapour from the

insulating material

Create roof pitch where possible Wind drift/erosion protection

must be observed Pressure resistant approved

thermal insulation required Highly effective vapour barrier

required

12

34

567

8

Vegetation layerOptigreen Extensive Substrate Type EOptigreen Filter MatOptigreen Drainage Layer Type Perl 2/10Optigreen Trickle Protection MatThermal insulationRoof membrane (root-resistant according to FLL)Division and protection layerConcrete layer9

P. 38

P. 42

P. 50

P. 8

P. 16

P. 20

P. 26

P. 34

1234567

89

4. Inverted roof

*

*

*

*

*

Vegetation layerOptigreen Substrate Type EOptigreen Filter MatOptigreen Drainage LayerOptigreen Trickle Protection MatThermal insulationRoof membrane (root-resistant according to FLL)Vapour barrierConcrete layer

P. 38

P. 42

P. 50

P. 8

P. 16

P. 20

P. 26

P.34

OPTIGREEN TRaDE INFO “ROOF CONSTRUCTIONS aND GREENaBILITY”

* Only suitable for limited use in inverted roofs! Consultation is necessary.

12

345

6

7

89

123

456

7

8

9

6

86

4. Discharge coefficientThe discharge coefficient is a factor of the calculation for-mula for the maximum discharge at a defined rainfall and describes the maximum amount of water discharged per time unit.

Calculation example:Discharge coefficient = 0,3100m² Green roofRainfall: 340l/s*ha

Calculation...

5. Annual discharge coefficient The calculation formula to determine the annual discharge is based on the annual discharge coefficient which is the ratio between the annual rainwater runoff amount and the annual rain volume.

Calculation example:Discharge coefficient = 0,3100m² Green roofRainfall: 600mm/m² per annum

Calculation...

1. Percentage to degree to gradient

1.00 % 0,6° 1:57 2.00 % 1,1° 1:50 3.00 % 1,7° 1:33 5.00 % 2,9° 1:20 7.00 % 4,0° 1:14 9.00 % 5,1° 1:11 10.00 % 5,7° 1:10 15.00 % 8,5° 20.00 % 11,3° 30.00 % 16,7° 40.00 % 21,8° 60.00 % 31,0° 80.00 % 38,7° 100.00 % 45,0°

OPTIGREEN CONVERSION TaBLES

Kilonewtons Newtons Kilogramms* Tons*

1000 KN 1 Mio N 100.000 kg 100 to 100 KN 100.000 N 10.000 kg 10 to 10 KN 10.000 N 1.000 kg 1 to 1 KN 1.000 N 100 kg 0.1 to 0.1 KN 100 N 10 kg 0.01 to 0.01 KN 10 N 1 kg 0.001 to 0.001 KN 1 N 0.1 kg 0.0001 to * Rounded values. Newtons and kilonewtona are directed forces. Kilograms and tons indicate weights. Therefore it is described as Kilogram superimposed load. Correct conversion factor: 1N = 1kg x 9,80665m/s².

Millimeter (mm) Meter (m) Inch (in) Feet (ft) Yards (y)

1 Mio mm 1.000 m 39,370.08 in 3.280,83 ft 1,093.61 y 100000 mm 100 m 3,937.01 in 328.08 ft 109.36 y 10000 mm 10 m 393.70 in 32.81 ft 10.93 y 1000 mm 1 m 39.37 in 3.28 ft 1.09 y 100 mm 0.1 m 3.94 in 0.328 ft 0.11 y 10 mm 0.01 m 0.39 in 0.0328 ft 0.011 y 1 mm 0.001 m 0.04 in 0.00328 ft 0.0011 y

3. Weight conversion table

3. Length conversion table

2. Degree to percent to gradient

1° 1.70 % 1:100 2° 3.50 % 1:50 3° 5.20 % 1:33 5° 8.80 % 1:20 7° 12.30 % 1:14 9° 15.80 % 1:11 10° 17.60 % 1:10 15° 26.80 % 20° 36.40 % 25° 46.60 % 30° 57.70 % 35° 70.00 % 40° 83.90 % 45° 100.00 %

87

1. GeneralLike other roof types, green roofs must also meet speci-fied technical requirements and legal regulations in the interest of fire protection. The green roof should be non-flammable and should serve as a protective shield against flying sparks and radiating heat in order to prevent fire from spreading.

In order to meet these requirements in Germany, a vari-ety of basic points in the green roof guidelines need to be met, which are linked to a model of the German Ministry of Urban Development, Housing and Transport (Ministerium fur Stadtentwicklung, Wohnen und Verkehr) from 2 august 1989 (VB4-230-336).

2. Optigreen intensive green roofs Optigreen intensive green roofs are classed according to construction regulations as “hard roofing” and are thus resistant to flying sparks and radiating heat.

3. Optigreen extensive green roofs Optigreen extensive green roofs are similarly classed as sufficiently resistant to flying sparks and radiating heat provided the following conditions are met:

Vegetation consists predominantly of low-growing plants such as sedum, herbs.

Substrate structural height of at least 30 mm. Substrate mass consists of at least 20 per cent organic

materials (by mass). Building circumference walls, fire walls, or approved

fire-wall replacements have a maximum distance of 40 m and rise a minimum of 300 mm above the upper edge of the green roof structure.

If construction regulations do not permit the installa-tion of the aforementioned walls, an upstand made of non-flammable material with a height of at least 300 mm or coarse-gravel strips and/or solid slabs with a width of at least 1000 mm must be installed.

Openings on the roof (i.e. sky lights) and in the walls must have a coarse-gravel strip or solid slabs of at least 500 mm width installed in front of them. Excep-tion: the wall openings are located more than 800 mm above the upper edge of the green roof structure.

a strip of at least 1000 mm width must remain vegeta-tion-free around the eaves of gabled row buildings.

4. Important notes all Optigreen system solutions fulfil the aforemen-

tioned fire safety requirements and are thus classified as “sufficiently resistant to flying sparks and radiating heat” (“hard roofing”) according to German standards.

additionally, national and local fire-safety specifica-tions are to be observed as appropriate.

a maintenance care contract with an Optigreen partner organisation is recommended in order to guarantee, among other things, the fire safety of the vegetation through the removal of unwanted foreign vegetation.

OPTIGREEN TRaDE INFORMaTION “FIRE PROTECTION”

Roof exit

aBOUT OPTIGREEN

GERMaNYOptigreen international AGam Birkenstock 1972505 KrauchenwiesPhone +49 (0) 7576 / 772-0Fax +49 (0) 7576 / 772-299Email [email protected]

as one of the leading companies in green roofing, Optigreen international aG combines over 40 years of experience with continuous innovation and orientation to the demands of the market. Optigreen international aG and its partner organisations are fully specialised in green roof buildings and roofs. The Optigreen partner organisations are experienced trade experts in roof greening and regular further their knowledge regarding current green roof trends through continuing education. Optigreen greens approximately 2 million square meters of roofs per year.

The Optigreen partner association is represented throughout Europe, asia and North america.

Competent advice through Optigreen area managers, Optigreen technical department and Optigreen partner companies

Many services provided free of charge: Supplying of technical specifications and CaD drawings,

computer-aided calculation of water retention, determination of cost care reference values, wind-proofing calculations, drainage aids, etc

Project-specific individualised solution suggestions Comprehensive project range with many system solution,

some patented High quality of material. Perfect logistic and just in time

delivery Outstanding quality of execution with trained and

experienced Optigreen partner companies Compliance with country-specific green roofing guidelines Continued support following completion: care and

maintenance, work safety, public relations Lobbying for green roofing Training for planners and administrative groups active cooperation in green roof associations including

the FLL (Forschungsgesellschaft Landschaftsentwicklung Landschaftsbau), FBB (Fachvereinigung Bauwerksbegrü-nung), VfB (Verband fur Bauwerksbegrünung), DGNB (Deutsche Gesellschaft fur Nachhaltiges Bauen), GRO (Green Roof Organisation) and SWIG (Sustainable Water Industry Group).

www.optigreen-greenroof.com

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swigSustainableWater Industry Group

Verband für Bauwerksbegrünung

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