HTW
Raft Systems / Sandwich Construction
A pressure-spreading open structure between road foundation and subsoil. A system consisting of horizontally coupled elements with an open structure, which has a pressure-spreading function. The open structure allows for gas exchange which promotes soil biology. Also, the layer can be partially filled with nutrient-rich soil promoting tree growth. The coupled structure ensures that damage to the pavement by root growth is minimized.
A pressure-spreading open structure between road foundation and subsoil. A system consisting of horizontally coupled elements with an open structure, which has a pressure-spreading function. The open structure allows for gas exchange which promotes soil biology. Also, the layer can be partially filled with nutrient-rich soil promoting tree growth. The coupled structure ensures that damage to the pavement by root growth is minimized.
Vario Treebox
Specially developed for existing and newly planted trees. Available in multiple heights to achieve the optimal conditions for your trees in your project.
Vario Treebox SP
Specially developed for existing and new trees to be planted in places where the traffic load is lower. A lightweight version of our standard Vario Treebox.
Soil volume calculator
How many cubic metres do you need for a tree? Rules of thumb, such as 1 m3 (qm) per year of growth or 0.75 m3 per m2 of crown projection are often used. We are noting that these rules of thumb are still often used without further interpretation of the underlying assumptions. Treerootsystems is pleased to perform the necessary calculations to respond to this question.
We use the calculation standards published by the Dutch National Tree Institute for this purpose, in combination with climate zones of your project. The software used is based on both empirical and various scientific studies. See also the most comprehensive study conducted by Bartlett Tree research.
Download link for soil volume calulator
“If you want more information about calculating the number of crates needed for your project, our advisors are happy to talk to you.“