Urban tree solutions

Sandwichpanel

Improving soil conditions for exsisting and new trees

The sandwich construction replaces the foundation layer, creating a thinner base course and increasing the available rootgrowth volume. The panels in combination with geotextiles carry and distribute the traffic load. SandwichPanel  is specially developed for situations where compaction of rootzone is to be expected due by traffic loads.  The open structure creates a open airlayer underneath the pavers preventing roots from growing up and damage the pavement.

start installation guidelines sandwichconstruction

Do roots destroy roads or do roads destroy roots.

This question  is the beginning of  the sandwichconstruction . Since then the sandwichpanel 74 did not  change. And still is the best suitable panel for the job. Now also available in a stronger version  Sandwichpanel 130, over 1300kN/m2

 

sandwich construction when to use treerootguide

Application

SandwichPanel  is placed on a layer of tree soil, or structural soil, underneath the pavement surfacing. The system can be used in areas with existing or newly planted trees. SandwichPanel is also a good alternative when it is not possible to use other subsurface structures or in areas with a high groundwater level. We advise that the system should not be used within the zone of rappid taper (distance is depending on treespecie, but to be sure ask treespecialist when working within a 2 metres circle around the tree). We advise to use a treerootguidingspanel, this panel should be around 10 cm deeper than the sandwichconsctruction, to prevent lifting up the sandwichconstruction. 

Sandwichpanel74

Product specifications 
- infiltration plate for horizontal and vertical infiltration and drainage 
- three-dimensional infiltration and tree root space 
- infiltration speed: 189 litres per min/meter 
- loading capacity: approx. 740kN/m2 
- material: recycled PP, reinforced for high pressure, 100% recyclable 
- panel sizes (8 units): 1040 x 960 x 52 mm, with click system on all sides to create large surface areas 
- nominal weight: 4.5 kg/m2

Sandwichpanel130

Product specifications 
- infiltration plate for horizontal and vertical infiltration and drainage 
- three-dimensional infiltration and tree root space 
- infiltration speed: 189 litres per min/meter 
- loading capacity: approx. 1300kN/m2 
- material:  PP, reinforced for high pressure, 100% recyclable 
- panel sizes (8 units): 1040 x 960 x 51 mm, with click system on all sides to create large surface areas 
- nominal weight: 4.6 kg/m2


Advantages


- long lifespan
- large openings
- tested both in laboratories and onsite.
- easy to cut to size without loss of essential loading capacity
- low installation depth
- with new trees: more tree substrate per m2 
- with existing trees: less material waste and less damage to the tree roots

Services

With succes we have already improved urban landscape in cities across Europe and  around the world by connecting green, blue,  gray infrastructure.

The knowledge and experience we gained through experiment, reseach and projects we gladdy want you to be part of this.

Because we truly believe knowledge is most usefull when shared.           

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Where to buy

TreeBUILDERS orginated from the Netherlands. We at TreeBUILDERS only sell through qualified distributors who are engaged in the professional urban landscape with the aim of adding value to your environment.
If you cannot find a distributor in your country, please contact us by emailing info@treebuilders.eu or calling +32 413 530 266.