HUMBERG Competence in Tree Protection by HUMBERG Metall- & Kunstguss GmbH

Competence in Tree Protection Products for Urban Tree Planting

2012

Technical information

Dimensions: All the stated dimensions are to be understood as nominal dimensions and may therefore differ from the actual dimensions. Colours: All powder-coated products are sandblasted and primed before coating. All RAL colours are available on request for a small additional charge. The following shades are available at no extra charge:

Black micaceous iron oxide, metallic microstructure

DB 703, micaceous iron oxide, metallic microstructure

RAL 6005, moss green

RAL 6009, fir green

RAL 7016, anthracite grey

RAL 9005, jet black

RAL 9016, traffic white

RAL 3020, traffic red www.humberg-guss.de

(Please note that subsequent orders may contain minor process-linked differences in colour shades)

HUMBERG Metall- & Kunstguss GmbH Stevern 78 ∙ 48301 Nottuln ∙ Germany

Tel.: 0049 2502 6071 Fax: 0049 2502 6072

info@humberg-guss.de www.humberg-guss.de

HUMBERG vCard

HUMBERG Metall- & Kunstguss GmbH Stevern 78 ∙ 48301 Nottuln ∙ Germany

Tel.: (+49) (0) 2502 / 6071 Fax: (+49) (0) 2502 / 6072

info@humberg-guss.de www.humberg-guss.de

Table of contents

Introduction

Competence in tree protection Contact persons The tree and its location Trunk and crown The root system Trees and technical infrastructure Planning aspects Anti-slip protection Anchorage and trunk protection Root zone irrigation Effects of climate change Tree pit construction types Urban tree planting checklist

6 7 8 10 12 14 16 18 19 20 21 22 30

Root care HUNO ® WurzelStern® HUNO ® Water and Air Caps HUNO ® Deep Aeration HUNO ® Ventilation Bollard

32 34 36 39 40

Subsurface Tree Grilles Quadro-1 Quadro-2 Quadro-3 Quadro-4 Quadro-PLUS

42 46 48 50 52 54

Root Protection Bridges Radix

64 66

Tree Grilles Supporting structures

72 74

Cast Iron Grille Series – ARBORIS Alea® Amellus® Folium® Corona® Corona®-R Molea® Molea®-R Lumen® Ambio®

76 78 79 80 82 83 84 85 86 87

Gratings Orbis Clatri

88 90 92

Competence in Tree Protection

Aluminium Cast Grille – AERO Aero Surface area grille

94 96

Laser Grilles Laser Grille Design Ambio®-L Sorbus®-L Grille System – Fraxinus®

98 100 102 104 105

Tree Guards Fagus Abies Tilia Betula Malus Ilex Platanus Amplexor Robinia Afzelia Prunus Carpinus Corylus Cornus

108 110 112 114 116 118 120 122 124 126 128 130 132 134 136

Tree Guard Rings Alnus Ficus Salix Quercus Ginkgo Pyrus Cedrus Acer Helix Cercis Ulmus Pinus

138 140 142 144 146 148 150 152 154 156 158 160 162

Our Partners in Tree Protection Bruns

164 166

Appendix Bibliography Company information

168 172

Root care

Subsurface Tree Grilles and Root Protection Bridges

Tree Grilles

Tree Guards and Tree Guard Rings

108

Competence in Tree Protection

ÂŠ Reinhold Scheer

Competence in Tree Protection

To whom it may concern,

We at Humberg Metall- & Kunstguss GmbH are very pleased to present our specialist catalogue, which focuses on »Products for Urban Tree Planting«. We take our inspiration by the age-old special bond between man and trees, a bond which has had a lasting effect on public life and community spirit and continues to influence this. Now, we are proud to include you in our many years of experience in the area of tree protection. Conscious of the importance of trees for the quality of life of people in cities, we have compiled here the important planning criteria and guidelines that ought to be taken into consideration when planting trees in residential areas. Urban surroundings pose major challenges both for those involved in planning – as regards the different aspects to be considered when planting urban trees – and also for the living organism itself, the tree, which must come to terms with different living conditions in different settlement areas. This catalogue provides helpful tips and practical advice on the planting of trees in urban areas and also includes an overview of our wide range of products specifically tailored to tree protection.

"At Humberg, we never see problems, but rather new tasks and challenges …" Franz Humberg

We have compiled the professional and comprehensive guidelines for you in this manual, taking existing rules and regulations and current DIN/ISO standards as a basis. Our intention is to contribute to optimising the entire process from planning to implementation of a long-term and cost-effective complete solution. We strive to achieve the bestpossible result for all participants to this process. Yours sincerely,

Franz Humberg

Competence in Tree Protection

Humberg has been active in the metal processing sector since its foundation as a forge and machine works back in 1882. Initially, our emphasis was on manufacturing and repairing farming machines. Half a century later, the business was expanded to include a foundry for manufacturing grey cast iron and in 1926 the first Cupola furnace was put into operation. Humberg has been active in the metal and art foundry sector ever since. During this initial phase, the main products cast were products that were required in the agricultural sector. These included barn windows, horse whins and Cambridge rollers. In addition, sewer drains and manhole covers were also manufactured. In the spring of 1968, the first generation of aluminium door panels manufactured by Humberg were displayed at the Hanover trade fair. Around the same time, the factory operation was converted from manufacturing grey cast iron to aluminium casting. The old Cupola furnace was dismantled in 1972, thus bringing an end to Humberg's first era.

Competence in Tree Protection

Following this, the company developed to became the market leader in manufacturing decorative door panels, design elements for the front door sector and historical lamps. Ever since, the aluminium and bronze casting sectors have been at the centre of what we do with the main focus on townscape design and tree protection. Humberg manufactured its first tree protection systems as far back as 1994 and since then has continually developed its product portfolio in this segment. In 2010, Humberg was presented with the renowned red dot design award in recognition of the company's outstanding ARBORIS Tree Grilles. In addition to the company's technical and specialist know how, and its adherence to highest quality standards, Humberg is committed to the use of state-of-the-art 3D computer programmes in developing and manufacturing its innovative products. This allows us to implement the latest technical findings in attractive and award-winning designs while at the same time catering for the individual ideas and wishes of our customers.

Contact Persons

In addition to providing you with high-quality individual products and compatible, modular complete solutions, we at Humberg are dedicated to providing you with the highest-level of service from initial planning stages right up to installation of your tree protection product.

This includes expert advice on all our standard products, as well as planning and implementing specific individual ideas and wishes. As a manufacturer, we can respond to such individual requirements quickly and costeffectively.

Our experienced team is happy to support you with your projects in a targeted and solution-orientated manner.

Brigitte Vinkelau

René Schnelle

J 0049 2502 2213 070 - 27 brigitte-vinkelau @ humberg-guss.de

J 0049 2502 2213 070 - 25 rene-schnelle @ humberg-guss.de

Herbert Knapp

Dipl.Des. Timo Rybicki

J 0049 2502 2213 070 - 15 herbert-knapp @ humberg-guss.de

J 0049 2502 2213 070 - 21 timo-rybicki @ humberg-guss.de

Petra Sicker

Andrea Humberg

J 0049 2502 2213 070 - 12 petra-sicker @ humberg-guss.de

J 0049 2502 2213 070 - 26 andrea-humberg @ humberg-guss.de

Consultancy and Sales

Engineering

Order Processing

Consultancy and Sales

Engineering

Accounting

Contact Persons

The Tree and its Location

In the course of evolution, the living organism that is the tree has had to adapt to ever-changing and often extreme local conditions and environmental influences. Its development is closely linked to soil conditions at the tree's location. Using their roots - which are in fact very extensive systems - trees penetrate the soil and seek out areas, which satisfy their needs in terms of ventilation, moisture, availability of nutrients and pH-value. Due to their adaptability, trees are able to survive in urban areas, despite the many unfavourable conditions, such as very limited water supply and space. Nonetheless, certain basic preconditions must be created by man to ensure this.

This increases the life expectancy of the tree, allowing it to retain its value over the long term and minimises follow-on costs. Beneficial effects of urban trees Although trees in urban settings are defined as street furniture in the Recommendations for Street Environment Design (ESG, 1987) and hence are formally on equal terms with lights, fountains and seating, they nonetheless offer diverse design, financial and ecological benefits. In this context, urban trees are referred to as having beneficial effects, because they: • Provide a structure to the streetscape

In urban areas, it is all but impossible to provide a tree with the same natural living conditions that exist in woodlands. Both the soil conditions and the atmospheric conditions differ significantly. Accordingly, in urban areas one must expect a more confined root zone, poorer soil conditions, emissions and further stress factors for the tree, such as increased solar radiation or drought-related water shortages.

• A bsorb CO2 in the wood over the long term, thereby contributing to climate protection

Therefore, when planning tree plantations, it is imperative that the best possible conditions be set right from the very outset to ensure healthy development and sustain the vitality of the tree over the long term.

• C reate added-value (trees and green areas make real-estate properties more attractive)

In this context, it is important to note that optimal development of the tree can only be achieved if the above ground and subsurface tree organs are in balance; damage or disruption in one of these areas, for example damage to the roots as a result of soil compaction in the course of civil engineering work can cause lasting long-term damage to the corresponding organs often with a lagged impact.

• Form a contrast to the surrounding buildings • A ssist traffic management (e.g. trees have a calming effect on traffic) • Enliven and improve the cityscape

• I mprove the quality of life and living standards in urban areas (allowing the change of seasons to be experienced ) • Provide a habitat for many species of animals • I ncrease the relative humidity and reduce wind speed • L ower the air temperature by providing shading and evaporative cooling • Reduce noise perception

Well-planned and properly-implemented tree plantation fundamentally reduces the risk of pest infestations or diseases.

8 8 The Tree and its Location

• F ilter out aerosols and dust particles in the air, thereby reducing the level of fine particles over the long term.

ught to think that o e "W we are one of the leaves of a tree,

and the

tree

is all humanity ..." Pablo Casals (1876â&#x20AC;&#x201C;1973)

The Tree and its Location

Trunk and Crown

Fandamentally, we differentiate between two types of trees: deciduous and coniferous. Ginkgo trees form a special category and as "living fossils" are the last living representatives of the class Ginkgoopsida. Viewed from top to bottom, all trees consist of three main parts: â&#x20AC;˘ The Crown â&#x20AC;˘ The Trunk â&#x20AC;˘ The Roots

The primary function of the bark is to protect the anderlying layers, which conduct water and nutrients, against physical damages, fungal and insect infestations as well as overheating, which could lead to cell structure damages.

The Crown The crown of the tree begins where the trunk forks into wooded branches progressing to coarse, weak and fine branches, and ultimately to branches that only carry leaves.

The structure of the trunk is remarkable in that only the innermost layers ander the bark are alive. The heartwood (please see the figure of the right) simply serves as a support structure and no longer contains any living cells.

The leaves make a fandamental contribution to providing the tree with nutrients, because it is here that the photosynthetic process takes place. The tree crown is also very important as a design element, as it varies depending on the tree species and type. It is therefore important that right from the initial planning stage, the colour (not forgetting the autumn foliage), light transwithtance and the growth habit are integrated harmoniously with the characteristics of the location.

In young trees, the outer protective layer, which consists of dead cells, is not yet fully developed. Individual tree species, such as plane trees, continue to shed their bark plates on a regular basis even when they are mature.

In general, we distinguish between four crown shapes: 1. 2. 3. 4.

The Trunk Externally, the tree trunk is primarily characterised by its bark, which has an individual structure depending on the species of tree thus providing one of the best identifiers for distinguishing different tree species.

Conical crown Widely protruding crown Spherical crown Pyramidal crown

Trunk and Crown

Therefore such trees only have relatively weak protection against physical damages or strong solar radiation. It is for this reason that it has proven worthwhile to encase the trunks of freshly planted trees in reed matting to provide protection against overheating. Damage to the trunk encourages the penetration of micro-organisms, in particular wood-destroying fungi. Progressive rotting leads to badly damaged trees being removed so as not to compromise road safety.

Crown

Tree Respiration Urban trees make an important contribution to global climate protection courtesy of their longterm storage of the environmentally-harmful gas carbon dioxide (CO2) in the wood. A tree absorbs CO2 through its leaves and releases oxygen (O2) into the atmosphere. In turn, the roots require oxygen, which they absorb from the soil along with water and nutrients and they emit carbon dioxide. The healthy development of the tree is dependant on this soil-atmosphere gas exchange.

Trunk

Hear twood

Sapwood

Cambium Bast

Bark

Trunk base

Root system

Trunk and Crown

The Root System

The underground organs of the tree are generally hidden from our view and are therefore often forgotten. However, the very survival of a tree is dependant on the health and functioning of its roots. Trees not only require healthy roots, but there must also be a balanced relationship between the volume of the underground supply organs and their above-ground counterpart, namely the leaves or needles. Trees can only develop their beneficial effects in a optimal manner if these conditions are met. Roots need oxygen in order to fulfil their numerous functions. Apart from supplying the tree with nutrients and water, the root system also serves to anchor the tree solidly in the ground. The latter function is crucially important in terms of stability and therefore in terms of road safety in cities. The roots of most species of trees favour locations where soil is well ventilated, sufficiently damp and biologically active. For instance, if the oxygen content in the gas mixture in the soil is lower than 11%, root development can come to a standstill and can cause the roots to perish. A tree’s complex root system is susceptible to a multitude of external factors, which can potentially cause severe damage to the tree. Factors that have a negative impact on the growth of the roots: • L ack of oxygen in the gaseous mixture in the soil (e.g. as a result of compaction or the utilisation of unsuitable plant substrates) • Restricted gas exchange caused by sealed surfaces • Under sized root zone • Damage to the roots (e.g. caused by building works) • Water shortage or excess water • Unfavourable pH-value of the soil • Input and concentration of harmful substances (e.g. road salt, engine oil, dog urine and other substances that are toxic for the roots)

The Root System

Effects of root damage: • Reduced vitality • Vulnerability to diseases • Reduced life expectancy • Negative impact on road safety • Disruption of the water balance Root growth in urban habitats Unlike the trees in woodlands, the urban tree is generally faced with very different living conditions. The urban tree must share its narrow root zone with many other systems, whereby the protection of technical equipment belonging to supply and waste disposal systems is often considered the priority. Modern procedures in the construction of roads and paths prevent the roots from growing into the highly-condensed substructure, since neither enough oxygen nor water is available there. As a result, in confined urban spaces, root growth is often concentrated in proximity to the surface thus causing damage to pavement surfaces. Furthermore, scientific studies confirm that root growth is concentrated particularly on the areas that cater best for the needs of the tree. Due to their flexible tips, roots grow along the fringes of density limits and always into less compressed substrate layers. In doing so, they favour soil areas that contain both medium pores for water supply and also large pores for oxygen supply. The expansion of the roots follows gradients that are present in the substrate. In this manner, they turn to soil areas that contain higher concentrations of growth-enhancing substances, and turn away from those that contain high levels of growth-inhibiting substances. Aside from providing a suitable substrate and an appropriate tree pit size, the neighbouring area should also be structured in such a manner that is offers sufficient root-permeable space for the growing tree.

Sinker root systems

Calyptra (root cap)

Tap root systems

Magnification of the tip of a root

A further important aspect, which time and again generates problems and high repair costs, is roots growing into supply and waste disposal pipes. It has long been assumed that the water, which is being transported in the pipes, is the reason that pipe connections become overgrown. Latest research findings show that this is not the case. There is accelerated root growth in proximity to the pipes in particular due to the characteristics of the area close to the pipe. Such areas often offer the roots better living conditions as regards soil compaction and oxygen content when compared to neighbouring substrates.

Fibrous root systems

Subsequent corrections to the root system are practically impossible and very costly. Hence, it is advisable that the manifold opportunities offered by modern tree protection systems be looked at right from the commencement of planning or reconstruction of tree sites. This will prevent problems arising at a later date. Root systems Given natural conditions under which root growth can develop freely and depending on the tree species, we essentially distinguish between three shapes of root systems.

In urban habitats, the shape is primarily determined by the soil parameters of the surrounding area, which overpower the genetic shape characteristic.

The Root System

Trees and Technical Infrastructure

The changing world we live in today brings with it changes in the use of traffic routes. Streets that have been tailored to suit new requirements have substructures, which are very difficult for the roots of roadside trees to grow into. Facing this, we have old planting techniques and the increasing utilisation of the available space on the pavement side to accommodate supply and waste disposal pipes. Repeated building operations see new substrate being introduced into the areas outside the tree pit, thus offering the roots potential to expand. This alters the soil areas on a small-scale and consequently they display different characteristics. Roots grow along the path of least resistance due to the mechanical properties of their tips. In the event of incorrect tree pit design, once the roots have exceeded the dimension of the tree pit, they inevitably reach pipe trenches and once there favour the bedding material. On urban sites, the adjustment of the roots of a tree to its specific location can lead to damages, which are often blamed on the trees themselves. Thus, they often grow into the bedding materials of paths and paved areas to utilise the water, oxygen and nutrition supply in areas near the surface and can cause these surface to lift up. If no better opportunities present themselves, roots will expand into areas that were not intended for this purpose. Responsibility for this lies in the hands of those who plan and carry out tree planting in ignorance of the real circumstances. Damages caused by roots and the high costs associated with this can be avoided if attention is paid to quality in the layout of tree sites. The well-known tree researcher, Professor Alex L. Shigo, formulated this insight as follows: "It is better to plant a tree worth $100 in a tree pit that costs $200, than to plant a tree for $200 in a tree pit than only costs $100."

Trees and Technical Infrastructure

By using high-quality tree plant substrates and modern construction types for tree pits, (e.g. the use of self-supporting subsurface tree grilles) the growth of tree roots in urban areas can be optimised over the long term. The soils and substrates used can be penetrated permanently, thus ensuring the gas exchange and supply of water and nutrition necessary for healthy trees to grow. The deployment of tree protection systems, for example tree guards or tree guard rings, largely prevents damages to the above-ground parts of the tree caused by vehicles colliding into it or vandalism. It is important to consult with specialists before planting to ascertain the criteria that ought to be incorporated in your planning. Promoting close cooperation among all the project partners right from the initial planning phase is worthwhile in the interests of preventing or minimising possible consequential costs.

4,5 m

2,5 m

2,2 m Clearance Gauge The clearance gauge in road traffic is identified as the minimum distance which must be kept free above the traffic route so as to facilitate unhindered use.

Over pavements the minimum distance may not fall below 2.2 m, whereas over cycle paths a minimum distance of 2.5 m must be maintained and over roads 4.5 m.

Trees and Technical Infrastructure

Planning Aspects

Local authorities often receive financial support for planting new urban trees; however they must pay for the care and conservation of the trees themselves. Long-term factors such as the average life expectancy of the tree, the natural growth height, specific location-related characteristics and subsequent care costs must therefore be looked at in the concept phase. In planning, it is important to consider the size of the mature tree and not the size of the corresponding seedling. This allows you to calculate the space that will actually be needed later on and to be able to provide this over the long term. An optimal and sustainable result can only be guaranteed through good conception and the utilisation of specifically-adapted products. This applies particularly to typical urban problems, such as drought stress or ventilation problems. According to experts, such problems account for the bulk of costs for subsequent tree care and conservation measures. These costs must then be borne by the local authorities. Generally, the root zone of solitary trees exceeds the throughfall. The thickness of the rooted soil layer depends on site conditions and the tree species. If good soils or plant substrates are used and sufficient ventilation and irrigation is present, the rooting depth can be more than 1.5 m. Consequently,

this can in many cases compensate for a lack of surface area for the tree pit.. Which tree suits which site? There are a numerous characteristics that should be heeded when searching for the right tree for a particular site. The criteria listed here illustrate the different factors that should be taken into account in planting and facilitate the selection of a suitable tree for your individual project. Attention should be paid to: • Light requirements • Light transmission • Space requirements (above and below the ground) • Plant substrate • Frost hardiness • Risk of wind damage • Growth shape (care costs if applicable) • Resistance to diseases and pests • Colour of leaves or needles and bark (including seasonal changes) • Compatibility with existing tree population • Disruptive factors (e.g. fruit fall, thorns etc.) You will find detailed information about individual tree species and their individual characteristics, in addition to preferred habitats in the Local authorities ang Govermental ....???

Dimensions and sizes: The following minimum trunk circumference should be taken into account:

Small-crowned trees Medium-growth trees Fast-growing trees

Trunk circumference

Trunk diameter

Tree height

14 / 16 cm 16 / 18 cm 18 / 20 cm

4,0 bis 4,5 cm 5,0 bis 5,5 cm 5,5 bis 6 cm

400 / 450 cm 450 / 500 cm 500 / 550 cm

The diameter of the root bale of tree nursery products is approx. 8 to 10 times the trunk diameter.

Planning Aspects

»A fool sees not the same tree that a wise man sees.« William Blake (1757–1827)

Planning Aspects

Anti-Slip Protection

The issue of anti-slip protection may initially seem of no direct concern with respect to the urban trees; however the need for this is a consequence of efforts to protect the tree that is being introduced into the streetscape.

to BGR 181, outdoor pathways ought to fulfil the slip resistance requirements for assessment group R10 V4 and higher. Hitherto, it has been difficult for cast metal surfaces to achieve such a level. Tested safety – ARBORIS ® To test the slip resistance of the HUMBERG ARBORIS ® tree grille series, its anti-slip properties were measured in the Test Centre Laboratory for Building Materials in Wismar. The German DIN 51130 test standard was used requiring test persons to walk on a »sloped surface«, which had been sprayed with special engine oil. To achieve R10 classification, the test person must walk safely along the test surface with an inclination angle of at least 10 –19° using standard footwear. The test surface in AMELLUS ® design managed this effortlessly achieving an average angle of 16.8°.

Tree protection products are subject to numerous different forces and must not only fulfil architectural and aesthetic requirements but also safety requirements. Thus, seasonal changes brings with them weather conditions, which can pose a danger for human beings. A tree grille surface might offer pedestrians a good grip in the summer or during dry spells, but could nonetheless pose a great danger in the autumn and winter. Such issues are important for all local authorities from a pedestrian protection point of view and also from an insurance point of view. The differing requirements made of outdoor surfaces are detailed for in various norms and standard values. The most important document in this respect is the » Code of practice for floors in work rooms and work areas with high risk of slipping « (BGR 181) issued by the Federation of Institutions for Statutory Accident Insurance and Prevention (HVBG) in Germany. This relates to flooring and traffic routes, which come into contact with slippery materials, such as damp foliage. According

Anti-Slip Protection

Subsequently, the displacement volume of the surface was determined. This determines the amount of liquid in cm3 that the surface can displace at a minimum. This far exceeded the requirements by achieving V10 – the highest possible value. Consequently, ARBORIS ® tree grilles are the first grey cast iron tree grilles on the market that fulfil modern anti-slip requirements for public spaces in accordance with German BGR 181.

Anchorage and Trunk Protection

Anchorage The tree ought to be anchored so that fine roots that develop after planting are protected against movement as a result of exposure to the wind. Care must be taken to ensure that the trunk, crown and roots are not impaired in their natural functioning. The selection of suitable anchoring methods depends of various factors, such as the size of the tree, the location, traffic safety as well as design and architectural requirements. Apart from stake and rope anchors (see fig. below), it is also possible to secure the tree using root bale anchorage, which fits in more harmoniously in the respective environment.

Trunk protection A further important aspect in urban settlement areas is the protection of the tree against possible mechanical damages to the trunk, such as those that can arise if cars collide into the tree or bicycles are parked against it. A significant number of the tree losses within inner-city tree populations result from such injuries and damages. In order to protect your tree investment over the long term, it is therefore advisable to install impact protection in the form of a tree guard or tree guard ring at high-risk locations. These can be combined with other tree protection products, thus protecting the tree population above and below the ground, which in turn minimises your follow-on costs.

Amplexor tree guard with trunk anchor

Anchorage and Trunk Protection

Root Zone Irrigation

Oftentimes, the substructure in urban areas does not offer the conditions necessary for healthy tree growth. Shortcomings with respect to air and water permeability or the nutrient content in the soil can be compensated by the introduction of a suitable plant substrate mixture. In this context, sufficient total pore volume and balanced water supply are important to achieve ideal regulation of the gas exchange. Furthermore, optimum pH levels in the soil are vital for healthy tree growth. Depending on the area of use, we distinguish between compacted and non-compacted plant substrates, whereby the latter is preferable, as they resemble natural soils. Ventilation and Irrigation A sustainable and permanent ventilation concept is of fundamental importance for the stability of the tree, as only a tree that is rooted down into deep layers of soil offers the necessary stability and also ensures sufficient supply. We offer the following solutions to guarantee this in the long term: • HUNO ® WurzelStern® – the central root zone irrigation system • HUNO ® Deep Aeration • HUNO ® Water and Air Caps • Root Protection Bridges to expand the root zone of existing trees The HUNO ® WurzelStern® is a combination of irrigation and ventilation pipes, which are installed centrally underneath the root bales when new trees are planted. Such a ventilation system not only increases the stability of the tree, but also prevents damages to urban supply lines.

Root Zone Irrigation

Due to the ideal conditions offered, root growth concentrates on the area in immediate proximity to the ventilation pipes, thus protecting otherwise endangered structures in the substructure and the pavement surfaces from the roots. With the HUNO ® Deep Aeration, borings are made in the ground to install pipes right into the bottom of the tree pit. These unfilled pipes have slits in the drilled area and equipped with a metal end cap at the surface. This prevents the pipe from clogging and allows the surface to be driven or walked over. Additionally, the use of root protection bridges is recommended in certain places, for example under footpaths and cycle paths. These self-supporting constructions not only prevent soil compaction, but also further increase the area where roots can penetrate. In combination with subsurface tree grilles, this makes it possible to significantly expand the oftenlimited root zone and thus improve supply to the tree. This avoids roots penetrating surface layers and ensures that the tree is lastingly anchored in the urban substructure. Due to the extreme local conditions in urban areas, when planting trees it makes sense to include irrigation systems. This protects the plants from drought stress during the summer months, thus helping them to maintain their health and resistance (e.g. against pests) over the long term. Furthermore, in order to avoid waterlogging, we recommend the piercing of layers at the bottom of the tree pit that are impermeable to water and if necessary the installation of a drainage system. The HUNO ® WurzelStern® also offers advantages in this respect, as it not only provides irrigation and ventilation, but also helps accelerate drainage of excess water.

Effects of Climate Change

Climate change is taking place all over the world. We can measure its effects since the beginning of the industrialisation era and this must be taken into consideration in present day planning of tree locations. We develop our products based on the latest research findings. Changes in temperature and precipitation have an enormous impact on all areas of urban tree planting. Adaptation to the inevitable effects of climate change is possible and worthwhile.

temporary but have severe consequences for the stretches of land affected. In the future, there will be an increase in the number of:

The main effects of climate change in Central Europe are the general increase in temperatures and a shift of the annual main precipitation to the winter months. According to the latest climate models, in Germany, for example, the temperatures in the winter months may increase by approx. 2.5 to 4°C, precipitation may fall by approx. 10 –20% in the summer months and increase by 10 –24% during the winter. This may not sound like much, but has an enormous impact!

The stability of urban infrastructures must be examined and improved against this background. Additional unsealed surfaces must be created in urban areas to counteract the increased threat of flooding and landslides. Effective water management systems with effective irrigation and drainage infrastructures are becoming increasingly important.

Extreme weather events Climate change is bringing with it an increased frequency of extreme weather events. Large deviations from the average weather conditions of a region are being recorded. These are often only

• Heat waves • Sudden torrential rainfall • Storms

The effects of drought on the tree During extended periods of drought, trees with insufficient irrigation experience increasing levels of drought stress, which leads to a severe weakening of the tree. Furthermore, as a result of the warmer climate, the weakened tree may then be infested by new, previously unknown germs and parasites, which migrate northwards and survive.

Heat waves, torrential rain and storms – The effects of climate change in Central Europe

Effects of Climate Change

Tree Pit Construction Types

Correct installation of the tree pit is a prerequisite for the proper growth of the tree and its long-term health. The specified minimum dimensions for a tree pit as recommended by the German Landscape Research, Development & Construction Society (FLL) is 12 m3 and the minimum depth is 1.5 m. This is in line with the German DIN 18916 standard (Planting techniques in landscaping; Plants and planting). The required rooting depth is dependent on the size of the tree pit and the adjacent ground, which must be improved or expanded if necessary. This can, for example, be achieved by utilising subsurface tree grilles, root protection bridges or surface area grilles. The FLL standards differentiate between two construction types for tree pits.

Tree Pit Construction Type I: Open, permeable to air and water on a lasting basis

Tree Pit Construction Type II: Covered

To create an open and uncovered tree pit, noncompacted substrate is introduced, which offers the tree near-natural conditions and thus optimal conditions for growth. In urban areas, this construction type can only be realised on sites where the tree bed is subject to little or no surface forces.

A covered tree pit serves two purposes. On the one hand, it serves as a site for the tree and on the other hand it serves as building ground for a traffic area.

In order to ensure safety for stepping or driving over the tree pit area using various vehicle types, for example by the rescue services, police or fire service, the tree pit must be covered by open and self-supporting constructions, such as surface area grilles and tree grilles. Such coverings are permeable to water and oxygen over the long term and also provide an aesthetic and functional transition to the adjacent pavements surfaces. In addition, by installing root protection bridges, it is possible to expand the area of the tree pit where roots can penetrate. In all instances where unsuitable soil conditions are to be foand outside the tree pit, root protection bridges support the sustainable anchorage of the roots and also the supply of sufficient water, nutrition and oxygen in the root zone.

This dual use requires the tree pit to carry loads; some tree pits must be able to withstand wheel loads from cars or trucks (e.g. in car parks). We suggest the installation of subsurface tree grilles from the Quadro series to ensure that these requirements are met. With a maximum static wheel load of 5T, these grilles can protect the sensitive root zone of the tree and prevent soil compaction over the long term. The various Quadro models can be upgraded to include root protection bridges (Radix and Quadro Plus), which expand the area where roots can penetrate as well as improving its supply and stability over the long term. It is also possible to combine irrigation and ventilation concepts in addition to different tree gratings with subsurface tree grilles, which creates complete solutions for spaces and other surfaces at risk of compaction. This introduces considerable freedom of design.

On the following pages you will find examples for the design of tree pits and tree sites in urban areas taking into account the acknowledged state of the art principles of engineering and science. Please note that the descriptions are exemplary and can vary by location.

Tree Pit Construction

SCHWETZINGEN Subsurface Tree Grille Quadro-3 Tree Pit Construction

Tree Pit Construction Type I Example 1 Including Tree Grille

Features at a glance: • Open construction • Permeable to air and water on a lasting basis • Vehicle resistant • Use of area up close to the trunk • Tree grille with support frame and separate outer frame • Concrete foundation for lateral load-bearing capacity • 1.5T or 5T wheel load • Tree Guard (Type: Carpinus) • Root bale anchorage • Central root zone irrigation with the non-compacted HUNO ® WurzelStern®

Tree Guard

Tree Grille with suppor t frame HUNO ® Deep Aeration with per forated KG pipe

Central root zone irrigation

Substrate (non-compacted)

Ventilated soil area

Tree Pit Construction

HUNO ® WurzelStern ®

Root bale anchorage

Tree Pit Construction Type I Example 2 with Laser Grille

Features at a glance: • Open construction • Permeable to air and water on a lasting basis • Only non-compact plant substrate • Vehicle resistant • Self-supporting surface area grille with support frame and separate outer frame • Concrete foundation for lateral load-bearing capacity • 1.5T or 5T wheel load • Tree Guard (Type: Amplexor) with trunk anchor • Central root zone irrigation with the HUNO ® WurzelStern®

trunk anchor Tree Guard

Central root zone irrigation

HUNO ® WurzelStern ®

suppor t frame Laser Grille

Ventilated soil area

HUNO ® cap with ventilation pipe

Tree Pit Construction

Tree Pit Construction Type II Example 3 with Subsurface Tree Grille

Features at a glance: • Covered and vehicle resistant • Non-compact plant substrate • Self-supporting Subsurface tree grille • Quadro-2 on support legs with root zone expansion via QuadroPLUS and root bale anchorage • 1.5T or 5T wheel load • Use of area up close to the trunk • Permanent ventilation and irrigation function • Effective protection against sinking of path or site surfaces and against densification in the root zone • Central root zone irrigation with the HUNO ® WurzelStern®

Substrate (non-compacted) Ventilation Quadro-PLUS

Pipes and cables

Tree Pit Construction

Quadro-2

HUNO ® WurzelStern ®

Root bale anchorage

Tree Pit Construction Type II Example 4 with Subsurface Tree Grille

Features at a glance: • Covered and vehicle resistant • Self-supporting Subsurface Tree Grille Quadro-1 on support legs with root zone expansion via condensable substrate and root bale anchorage • Tree guard ring (Type: Helix) • 1.5T or 5T wheel load • Use of area up close to the trunk • Permanent ventilation and irrigation function • Effective protection against sinking of path or site surfaces and against densification in the root zone • Central root zone irrigation with the HUNO ® WurzelStern®

Tree Guard Rings Substrate (non-compacted) Central root zone irrigation HUNO ® Cap

HUNO ® WurzelStern

Root bale anchorage Quadro-1

adjustable HUNO ® Cap

Ventilated soil area

Tree Pit Construction

Tree Pit Construction Type II Example 5 Including Subsurface Tree Grille

Features at a glance: • Covered and vehicle resistant • Concrete foundation for lateral load-bearing capacity • Self-supporting subsurface tree grille Quadro-3 with root zone expansion via condensable substrate and root bale anchoring • 1.5T or 5T wheel load • Use of area up close to the trunk and above the root bale • Permanent ventilation function and irrigation function • Effective protection against sinking of path or site surfaces and densification in the root zone • Central root zone irrigation with the HUNO ® WurzelStern®

Central root zone irrigation Precast reinforced concrete base Tree substrate (compacted)

Ventilated soil area

Tree Pit Construction

Root bale anchorage

HUNO ® WurzelStern ®

Quadro-3

Tree Pit Construction Type II Example 6 with Subsurface Tree Grille

Aeration and watering system Root stop barrier

Tree Guard Ring Root bale anchorage Quadro-3

Ventilated soil area

Tree substrate (non-compacted) HUNO ® cap with ventilation pipe Reinforced concrete base

Tree substrate (compacted)

Tree Pit Construction

Urban Tree Planting Checklist

1. Site selection

4. Choice of species and variety

OO Formulation of the goals of the “greening” scheme

OO Space requirements above and below ground (small-crowned / large-crowned trees)

OO Considering the necessary clearance gauge and local specifics to prevent restricted visibility (road safety)

OO Growth shape / crown shape

OO Classification / distance to buildings and properties (Law concerning the respective interests of neighbours, German Civil Code (BGB) etc.) OO Exposure – shadowing of buildings desired / undesired OO Taking new findings in climate research into consideration 2. Site surveys OO Investigating underground water supply and sewage disposal systems and involving the parties concerned in protecting such systems against root penetration

OO Ornamental flowers / fruit fall OO Foliage density / shadow impact OO Light requirements / transparency OO Urban climate limits/ site requirements OO Natural formation of roots / root vigour OO Resistance to diseases and pests OO Frost and heat tolerance OO Symbionts / inevitable or optional Mycorrhiza OO Natural life span 5. Preparing for planting OO Determining the tree quality OO Selecting planting time (autumn/ spring)

OO Determining the natural soil types on-site 6. Carrying out planting 3. Site preparation

OO Pruning (crown / roots)

OO Max. tree pit size strived for

OO Observing the correct planting depth

OO Use of appropriate soils or substrates (for open root zones or root zones that can be covered)

OO Releasing the bale covering / baling wire

OO Setting up aeration ditches, deep drilling, other possibilities for expansion of root zone

OO Evaporation protection for trunk and wooded branches

OO Installing self-supporting subsurface tree grilles and root zone covering, planning and preparation of root protection bridges

OO Impact protection (e.g. tree guard)

OO Examining the drainage of any excess water / connection to receiving waters

OO Watering dike - optional (for planting with “open tree bed”)

OO Examining whether tree locations are suitable to infiltrate rainwater (road and roof drainage) or planning for this aspect

OO Professional care of the young tree must be insured (follow-up care)

Tree Pit Construction

OO Binding / anchorage

OO Installing ventilation and irrigation facilities (possibly also installing drainage)

OO Plant nutrition and hygiene should be taken into account

»… I do not know how one can pass a tree and not be happy that you see it …« Fyodor M. Dostoyevsky (1821–1881)

Tree Pit Construction

Root Care

Tree protection begins with the roots. We have developed new environmentally-friendly and costeffective products in order to be able to offer our customers an effective and low-cost root care system. In cooperation with leading tree experts, we have developed the HUNO ® WurzelStern® ® for the purpose of root care. This ensures bestpossible growth conditions for roadside trees, indoor planting and roof gardens and allows you to achieve economical and ecological benefits from your tree plantings. The innovative design of the height-adjustable HUNO® Water and Air Cap enables both the use of commercially-available drainage pipes in the sizes DN 80 and DN 100, and also the adaptation of commercially-available KG pipes (DN/ OD 110). This allows you to realise cost-effective deep aeration in accordance with FLL guidelines. You can source the most economical pipe from the local building distributor in the vicinity of your construction project, and then order the relatively small and light aluminium cast cap to be sent to you. The new HUNO ® Root Ventilation Bollard System offers a combination of protective properties for human beings and plants alike. Here, the know-how HUMBERG has gained in the production of bollards over a 30 year period is united with the demands of modern tree protection. Our appealing designs comprise a steel pipe with an aluminium cast head and special ventilation openings on the side, which enables the required air-soil gas exchange while at the same time offering protection against damages. The ground sleeve can be connected to root supply lines or a deep borehole. The risk of these systems clogging – as is often the case with other ground caps – is thus reduced to a minimum.

Root Care

The tree is more than ﬁrst a seed … The tree is a slow, enduring force straining to win the sky. Antoine de Saint-Exupéry (1900–1944)

Root Care

5958.01

HUNO® WurzelStern® für Großbaum- and Neupﬂanzungen geeignet

The new HUNO ® System for Central Root Zone Irrigation is designed to achieve optimal ventilation and irrigation of tree pits or the root zones of trees and large shrubs. It optimises the exchange of gas by diverting soil-borne CO2 and helps to improve the nutrient supply and soil moisture. The advantages of the HUNO ® Wurzel Stern®

110 mm

Ø 580 mm

• Combinable with commercially-available drainage pipes, with or without cladding, in DN 80 and DN 100 • Central installation underneath the bale to ventilate and irrigate the root zone • Possibility of using solid wall pipes in the upper tree pit area • Facilitates demand-oriented irrigation • Optional: drainage of excess water from the tree pit • Supports steady root development and prevents dehydration of the root bales caused by “chimney effects” • Suitable for FLL Tree Pit Construction type I (open or covered / selfsupporting) and 2 (covered) • Deployable for all bale sizes, all tree pit and all tree pit volumes • Easy, tool-free installation • Suitable for connection to deep aeration systems • Material: Polystyrol (PS)

Root Care

Installing a WurzelStern速 when planting a new tree

Fig.1 Measuring and cutting the pipes to length

Fig. 2 Positioning approx. 50 cm below the root bale

Fig. 3 Covering the WurzelStern 速 with geotextile

Fig. 4 Covering with plant substrate

Fig. 5 Planting the tree

Fig. 6 Filling in the area and placing the end caps

Root Care

HUNO® Water and Air Cap One piece with stainless steel

The advantages: • Suitable for all Tree Pit Construction Types and tree pit volumes • Available as a system in conjunction with the HUNO ® WurzelStern® • The HUNO ® Ground anchor made of robust, ecologically neutral metal wire secures the position during installation and prevents the installation being ripped out after installation • Stainless steel grid made of 3 mm stainless steel, surface polished or glass-bead blasted, available in various modern designs • The square design allows simple installation flush to the ground in all paved surfaces • Load class A and B according to the DIN EN 1433 standard Accessories:: 1. HUNO ® WurzelStern® 2. HUNO ® Concrete plate for one piece cap 3. HUNO ® Ground anchor (robust steel wire)

The newly-developed aluminium cast cap from the HUNO tree and root protection range can be combined with commercially-available pipes in the sizes DN 80 and 100. It eases the irrigation of trees and large shrubs and ensures optimal ventilation of the tree pit and the root zone.

115

150

5959.01

DN 80-100

HUNO® Ground anchor

Stainless steel grid

Concrete plate

Ventilation and irrigation pipe in DN 80 or 100

Root Care

HUNO® Water and Air Cap (cast aluminium body)

HUNO® Water and Air Cap Height-adjustable with stainless steel grid

5959.02

265

20 mm per rotation

100 - 220

The advantages: • Continuous height adjustment (20 mm per rotation) • Can be combined with conventional pipes in the sizes DN 80 and DN 100 • Facilitates demand-driven irrigation • Suitable for all Tree Pit Construction Types and all tree pit volumes • Can be connected to deep aeration systems • Available as a system in conjunction with the HUNO® WurzelStern® • Solid cast aluminium body • Stainless steel grid made of 3 mm non-corrosive stainless steel, surface polished or glass-bead blasted and available in various modern designs • The square design enables simplified installation flush to the ground in all paved surfaces • Load class A and B according to the DIN EN 1433 standard

160

This aluminium cast cap has been thoughtfully and innovatively designed and its variable height adjustment makes it fast and easy to install. By simply rotating one of the two cap parts, the installation height can be continuously adjusted from 100 up to 220 mm. The new HUNO® Water and Air cap can thus be flexibly adjusted to match your individual architectural qualities.

DN 80-100

Stainless steel grid

Ventilation and irrigation pipe in DN 80 or 100

HUNO® Water and Air Cap (cast aluminium body)

Root Care

Installation of a height-adjustable HUNO速 Water and Air cap in conjunction with a Quadro-3 Subsurface Grille

Root Care

Fig.1 Laying the supply lines

Fig. 2 Setting the height

Fig. 3 Alignment of the head

Fig. 4 Covering with geotextile

Fig. 5 The thread provides additional stability

Fig. 6 The installed cap with its stainless steel grid

HUNO® Deep Aeration Cost-effective with commercially-available KG/PVC pipe

5959.05

The design of the height-adjustable HUNO ® Water and Air cap allows this to be adapted to suit cost-effective KG pipes according to the DIN EN 1401 standard with DN/OD 110 single-sided plug-in sleeves to achieve deep aeration in accordance with FLL guidelines. In this way, multiple costs can be saved in an instant. A conventional KG pipe can be sourced cost-effectively from your local building distributor, leaving only the relatively small and light cap to be ordered and delivered from us. The advantages: • Continuous height adjustment (20 mm per rotation) to accommodate different surface levels • Use of commercially-available KG pipes made from PVC-U according to the DIN EN 1401 standard with DN/ OD 110 single-sided plug-in sleeves • Suitable for all Tree Pit Construction Types and all tree pit volumes • Sturdy cast aluminium body • Stainless steel grid made from 3 mm non-corrosive stainless steel • The square design allows easy installation in all paved surfaces • Load class A and B according to the DIN EN 1433 standard

265mm

30-150mm

HUNO ® Deep Aeration in accordance with FLL guidelines with perforated or slotted pipes and ground anchor to prevent vandalism

PVC Pipe DN / OD 110

Soak-away gravel / lava stone

Ventilated soil area

Root Care

HUNO® Root Ventilation Bollard No more clogged supply systems

Possibilities and potential for improvement can be foand in all products, no matter how good. Insufficient care can quickly lead to blockages in the vent caps so that irrigation and the soil-air gas exchange is no longer possible. The removable root ventilation bollard was developed for this very reason and offers a combination of protective properties for people and plants. The hollow steel/aluminium tube bollard is designed in an appealing manner and its aluminium cast head is equipped with special ventilation openings on the side, through which the soil-air gas exchange takes place. It is practically impossible for this system to clog. The ground sleeve can be connected with root supply lines or a deep borehole. Thanks to our many years of experience in the area of street furniture, we are in a position to provide you with a turnkey solution for almost every situation you may encounter. Simply visit our website at: www.humberg-guss.de The advantages: • Ideal for connecting different tree pits together • Steel pipe construction, hot-dip galvanised according to the DIN EN ISO 1461 standard • For existing trees and new plantings • For connection to deep aeration systems • Available in different designs and models • Available in all RAL colours on request Railing with root ventilation function

Removable root ventilation bollards in a variety of designs Grass bollards to protect planting beds, trunk and roots

Deep aeration

Root Ventilation Bollards

For new plantings and existing trees – Combinable with all pipe systems to extend the ventilated root zone Ø100

400

Surface ﬁnish a) hot-dip galvanised b) hot-dip galvanised and powder-coated, black micaceous iron oxide, metallic microstructure c) hot-dip galvanised and powder-coated, RAL colour as requested

400

Material • Steel pipe S235JR (EN 10 027-1), hot-dip galvanised • Aluminium tube, powder-coated • Aluminium cast

900

Height above ground • Bollard: 900 mm • Gras bollard: 400 mm

Gras bollard

Bollard

Bollard designs*

Classic I

Nottuln

Rosendahl I

Parc Paris

Wilhelmshafen

* Fur ther designs available on request or at www.humberg-guss.de

Root Ventilation Bollards

Subsurface Tree Grilles

In cities, tree pits are not just a site for a tree. In addition, they must also meet the requirements set for traffic areas and parking spaces, public places and pedestrian zones.

Advantages: • Ideal integration of trees in newlydesigned areas, open spaces • Low cleaning costs

The HUMBERG Subsurface Tree Grilles in the Quadro series are practically invisible to the observer after installation. They make a vital contribution to providing lasting protection to the root zone of urban trees and are suited to ensuring species-typical development and vitality right through to an advanced age. All our steel constructions are manufactured from S235JR, hot-dip galvanised according to the DIN EN ISO 1461 standard and are available in many different sizes and models. This makes them suitable for all common trees and tree sizes. Our Subsurface Tree Grilles are able to discharge heavy traffic loads into the subsurface without compacting the soil. This is achieved by the redistribution of impacting surface tension forces onto individual support feet or a concrete foundation, which absorb the forces of lateral road pressure thus protecting the trees’ sensitive root zone against soil compaction. This ensures that the tree receives a sufficient supply of oxygen and water over the long term and simultaneously prevents surfaces or path coverings from settling in the area of the underground tree pit. All Subsurface Tree Grilles are available with concrete foundations or steel support feet foundations. HUMBERG Subsurface Tree Grilles are available in two load classes::

1,0T

5,0T

1,5T wheel load* • Light-weight model for pedestrians and passenger car loads 1,5T wheel load* • Suitable to be driven over by emergency vehicles or other commercial vehicles

* max. static wheel load (unbraked)

Subsurface Tree Grilles

• Use of area close to the tree trunk • Suitable for all tree and bale sizes • The practical solution when relocating large trees • Welded and/or bolted sectional steel structure, pre-assembled at the factory, available in one-piece or in multiple parts • Multiple-part models suitable for subsequent installation around the sensitive root zone of existing trees if pavements or paths must be fortified • Use of all substrates, also suitable for layered substrate structure (upper and lower substrate) • For construction types I and II of the FLL recommendations (German Landscape Research, Development and Construction Society) for planting trees. • Provides optimal ventilation for the tree pit and the root zone • Compatible with trench and deep aeration • Expandable to fit all tree sizes and suitable for tree pits with depths of up to 1.5 m; other tree pit depths available on request • Depending on the model, available with variable inner segments for adjusting in accordance with increases in thickness of the trunk • On customer request available with adjustable paving support frame

Quadro – The Subsurface Tree Grille The solution for new tree plantations and existing trees

Quadro - 1

One piece welded, easy installation

++ For new tree plantings ++ Welded, one-piece steel construction

max. root bale-Ø

++ No assembly – easy installation ++ Root bale-Ø up to 100 cm LL The root bale may not exceed the size of the planting hole!

Quadro - 2

Multiple parts, very large planting hole

++ Multiple parts, very large planting hole ++ Suitable for existing trees and new tree plantings

max. root bale-Ø

++ Multiple parts, welded and bolted steel construction. Easy assembly! LL For trees with a root-bale diameter of up to 2 m

Quadro - 3

Multiple parts, bolted

++ Suitable for existing tree and new tree plantings

max. root bale-Ø

++ Multiple parts, welded & bolted steel construction LL Paving / path surface can be positioned very close to the base of the tree!

Quadro - 4

Including Tree Grille

++ Suitable for existing tree and new tree plantings max. root bale-Ø

++ Multiple parts, welded and bolted steel construction ++ root bale-Ø up to 150 cm LL Planting and paving can be carried out at different times!

Subsurface Tree Grilles

Quadro â&#x20AC;&#x201C; The Subsurface Tree Grille Foundations and Accessories

Foundations and foundation options 1. Steel foundation footing (welded): For positioning on concrete foundations prepared on-site or on a base layer prepared on-site.

++ Easy transportation ++ Quick installation ++ Special sizes are possible with only minor additional expenditure

++ Optimal absorption of late2. Reinforced concreteral street pressures prefabricated foundations a) One piece (for new tree plantings) ++ Reduced construction time b) Two or multiple parts (suitable for ++ Drying times are eliminated new tree plantings and existing trees) Substrate separator (included in the scope of delivery) 1. Geotextile and steel mesh (zinc-coated) The upper end of the tree area and the base for all subsequent paving work

++ Min. 50 years stability in the ground/soil ++ Vylene-composite material with pressureresistant grid core sheets

2. Lateral woven wire mesh A woven wire mesh made of untreated steel wire serves to separate the plant substrate and the surrounding soil during installation.

++ Will yield to root growth due to corrosion

1. Solid paving support frame Included in the scope of delivery

++ Robust, hot-dip galvanised 5 mm steel section

LL No absorption of lateral pressures!

Paving support frame

2. Adjustable paving support frame ++ Uncomplicated assembly A separate component makes it possible ++ Adaptable to suit different to align the level of the ground covering construction situations with the subsurface grille using screws

Subsurface Tree Grilles

Afzelia

SCHWETZINGEN Subsurface Tree Grille QUADRO-3 Subsurface Tree Grilles

Quadro-1 One piece welded

850

5923.01

Quadro-1

Weight at wheel load of 1,5T

Weight at wheel load of 5,0T

1500 mm

700 mm / 800mm

180 kg / 170 kg

220 kg / 210 kg

1700 mm

700 mm

200 kg

240 kg

1800 mm

800 mm

220 kg

252 kg

2000 mm

800 mm

245 kg

280 kg

2200 mm

800 mm / 1000 mm

260 kg / 240 kg

310 kg / 290 kg

2500 mm

800 mm

300 kg

350 kg

Cost-effective solution for new tree plantings for root bales with diameters of up to 100 cm • • • • • •

Simple, quick assembly Root bale up to a max. Ø of 100 cm can be planted through the aperture Planted in the prepared pit in a matter of minutes Cost-effective construction without screw connections Available on request with adjustable paving support frame Models for wheel loads of 1.5T (cars) and 5T (trucks)

Models (foundation options) 1. Including welded steel feet for positioning on: a) Foundations constructed on site b) Base layer constructed on site 2. Including one-part or multiple-part concrete foundations to absorb lateral street pressures

Pavement bed (on site)

Surface paving (on site)

Scope of delivery • One-part sectional steel structure, hot-dip galvanised according to the DIN EN ISO 1461 standard • Fasteners (screws, washers, screw anchors etc.) • Geotextile and steel mesh (zinc-coated) • Substrate separator depending on installation situation (woven wire mesh, steel mesh or root protective film) • Irrigation system (including drainage pipe and height-adjustable HUNO® Water and Air Cap)

Paving support frame (150 mm high)

Steel mesh Geotextile

Substrate separator

Welded steel feet (customised lengths are possible)

Irrigation kit including height-adjustable HUNO® Water and Air Cap Foundations (on site)

Quadro-1

Quadro-2 Outer frame with removable inner segment

850

5923.02

Quadro-2

Weight at wheel load

1500 mm

700 mm

230 kg

250 kg

1800 mm

700 mm

280 kg

300 kg

2000 mm

800 mm

350 kg

380 kg

Variable protection for new tree plantings and existing trees – ideal for designing open spaces • • • • • •

For large trees with root bale with diameters of up to 2 m Outer frame with steel support feet Insertable inner segment, self-supporting Tree planting can be undertaken at the same time as paving work On request available with adjustable paving support frame Models for wheel loads of up to 1.5T (cars) and 5T (trucks)

Models (foundation options) 1. With welded steel feet for positioning on: a) Foundations constructed on site b) Base layer constructed on site 2. Including one-part or multiple-part concrete foundations to absorb lateral street pressures 3. Without feet, with on-site foundations to protect existing trees

Pavement bed (on site)

Paving support frame (hier 150 mm hoch)

Scope of delivery • Multiple parts bolted, sectional steel structure (inner segments and outer frame), hot-dip galvanised according to the DIN EN ISO 1461 standard • Fasteners (screws, washers, screw anchors etc.) • Irrigation kit (including drainage pipe and heightadjustable HUNO® Water and Air Cap) • Geotextile and steel mesh (zinc-coated) • Substrate separator depending on installation situation (woven wire mesh, steel mesh or root protective film)

Steel mesh

Inner segment

Surface paving (on site)

Irrigation kit including height-adjustable HUNO® Irrigation kit including

Substrate separator

Welded steel feet

Foundation (on site)

Quadro-2

Quadro-3 With a removable inner segment

Quadro-3

850

5923.03

Weight at wheel Weight at wheel load of 1,5T load of 5,0T

2200 mm

1400 mm

800 mm

340 kg

390 kg

2500 mm

1400 mm

800 mm

480 kg

540 kg

3000 mm

1400 mm

800 mm

640 kg

700 kg

For trees with a bigger root bale diameter – the optimal solution for existing trees • • • • • •

For trees with a root bale with a diameter of up to 1.5 m Self-supporting, removable inner segment, can be paved over up close to the neck of the tree Tree planting can be undertaken at the same time as paving work Available on request with adjustable paving support frame Optimal solution for existing trees Models for wheel loads of 1.5T (cars) or 5T (trucks)

Surface paving (on site) Steel mesh and Geotextile

Paving support frame (hier 150 mm hoch)

Scope of delivery • Multiple parts bolted, sectional steel structure, hot-dip galvanised according to the DIN EN ISO 1461 standard • Fasteners (screws, washers, screw anchors etc.) • Irrigation kit (including drainage pipe and height-adjustable HUNO ® Water and Air Cap) • Geotextile and steel mesh (zinc-coated) • Substrate separator depending on installation situation (woven wire mesh, steel mesh or root protective film)

Pavement bed (on site)

Irrigation kit including height-adjustable HUNO® Water and Air Cap

Multiple-part foundation ring with openings for root penetration (Optional)

Quadro-3

Quadro-4 Including Self-Supporting Tree Grille

Quadro-4

850

5923.04

1,0T wheel load (Weight plus grille)

5,0T wheel load (Weight plus grille)

2200 mm

1500 mm

320 kg

410 kg

2500 mm

1500 mm

400 kg

470 kg

3000 mm

1500 mm

520 kg

590 kg

Protected trunk neck and additional free root space created by the tree grille • • • • •

For trees with a root bale of up to 1.5 m Ø – deployable for new tree plantings and for existing trees Large root zone with optimal soil respiration Optimal supply of water and nutrients to the root system A wide range of tree grilles Models for wheel loads of 1.5T (cars) or 5T (trucks)

Surface paving (on site)

Self-supporting Tree Grille (here our Ambio design) for a wheel load of up to 5Tload,

Scope of delivery • Multi-part bolted sectional steel structure, hot-dip galvanised according to the DIN EN ISO 1461 standard • Choice of tree grille • Fasteners (screws, washers, screw anchors etc.) • Irrigation kit (Including drainage pipe and height-adjustable HUNO® Water and Air Cap) • Geotextile and steel mesh (zinc-coated) • Substrate separator depending on installation situation (woven wire mesh, steel mesh or root protective film) Irrigation kit including height-adjustable HUNO® Water and Air Cap

Steel mesh

Pavement bed (on site)

Welded steel feet

Geotextile

Foundations (on site)

Quadro-4

5923.05

Quadro-PLUS Root bridge add-on module

The Quadro-Plus is an add-on module for all tree protection grilles in the Quadro series and can be individually tailored to suit your requirements. It is bolted and in each case expands the respective subsurface grille by approx. 0.5 m for a wheel load of 5T and 0.75 m for a wheel load of 1.5T. • • • • • •

Ideal for linking tree pits together Sectional steel structure, hot-dip galvanised according to the DIN EN ISO 1461 standard Suitable for one-sided protection of trees on cycle paths and in car parks Ideal to integrate existing trees in developments Can also be deployed in conjunction with strip foundations Ideal to achieve an asymmetrical expansion of the root zone Surface paving (on site) Steel mesh and Geotextile

Quadro-PLUS

Welded steel feet

Unterflur-Baumrost Quadro-PLUS

Combinable with all Quadro models for cost-effective extension of the plant room

Scope of delivery • Welded sectional steel structure, hot-dip galvanised according to the DIN EN ISO 1461 standard • Fasteners (screws, washers, screw anchors etc.) • Geotextile and steel mesh (zinc-coated) • Substrate separator depending on installation situation (woven wire mesh, steel mesh or root protective film)

Quadro-4 with Tree Grille Alea HUNO® Water and Air Cap with stainless steel lid

Quadro-PLUS

Foundations (on site)

Unterflur-Baumrost Quadro-PLUS

Berlin – Trainstation Südkreuz Subsurface Tree Grille Quadro-3

Subsurface Tree Grilles

Trainstation Südkreuz – BERLIN Subsurface Tree Grille QUADRO-3 Subsurface Tree Grilles

Schweinfurt â&#x20AC;&#x201C; Schillerplatz Subsurface Tree Grille Quadro-2

Subsurface Tree Grilles

Schillerplatz – SCHWEINFURT Subsurface Tree Grille QUADRO-2 Subsurface Tree Grilles

Schwetzingen â&#x20AC;&#x201C; Schlossplatz Subsurface Tree Grille Quadro-3

Subsurface Tree Grilles

Schlossplatz – SCHWETZINGEN Subsurface Tree Grille QUADRO-3 Subsurface Tree Grilles

Munich – Simmernschool Subsurface Tree Grille Quadro-4-Bavaria, In cooperation with the City of Munich To celebrate the 100-year anniversary of the secondary school on Simmernstraße in Munich, it was decided to plant new trees. In close cooperation with the Local Department for Landscaping, our HUMBERG Quadro-4 was optimally adapted to meet the specific requirements of the Munich Gravel Plane in line with the ZTV-Vegtra Mü.

The project partners were delighted by the ease of installation and the positive cost/benefit ratio of the solution lending this project a role model character. Here the ideal technical solution was developed to lay different path surfaces and layer thicknesses close to the trunk.

Fig. 1 Insertion into the tree pit after screw connection

Fig. 2 Aligning the HUNO® water and air cap

Fig. 3 Overlay / cover with expanded metal and Geotextile

Fig. 4 Completion of paving and planting the tree

Subsurface Tree Grilles

Fig. 5 The completed tree sites with flat-bar steel tree grille

“on the po - p ly G et said, to robably od can m ake a tree” fig bec

n. ure ause it’s so hard o k r out h a b ow to get the lle Woody A

Subsurface Tree Grilles

Root Protection Bridges

The Radix Root Protection Bridge System creates additional space for controlled root growth and thus protects valuable old tree populations. At the same time, damages to paving and supply lines are avoided because courtesy of the additional space the roots are diverted away from these sensitive zones. Radix prevents soil compaction. In addition, surface tension forces that could damage the soil and the sensitive root system are directed away from the roots, which in turn ensures long-term oxygen supply to the sensitive root zones. Every tree is a unique living organism, which leads to each different location displaying very individual characteristics. This uniqueness must be taken into account in all planning. Prior to the commencement of work, the historical, cultural and emotional value of the trees to be protected must be determined by an independent expert. This expert examines the physical condition (inspection of the tree) and determines its intrinsic value. After that, the economical aspects of the proposed measures must be discussed and the general public informed about the planned measures. Following realisation of the measures, the tree roots will be able to embed and expand in the substrate layer provided, thus ensuring that the tree enjoys an optimal supply of water, nutrients and oxygen in addition to high stability. The Radix Root Protection Bridges are available for wheel loads of up to 1.5T (cars) or 5T (trucks), thus complying with the load classes for DIN EN 124/1229 as well as DIN 1072 â&#x20AC;&#x153;Roads and road bridges; load assumptionsâ&#x20AC;?. Naturally, our experienced construction and production team we can also manufacture to accommodate higher load classes.

Root Protection Bridges

Wallenhorst, OSNABRĂ&#x153;CK Root Protection Bridge Radix Root Protection Bridges

5923.06

Radix Root Protection Bridge

Models (foundation options) 1. Including variable steel feet foundations to provide optimal conservation of the tree roots 2. Including concrete foundation plates or strip foundations prepared on-site

Scope of delivery • Welded sectional steel structure, hot-dip galvanised according to the DIN EN ISO 1461 standard • Geotextile and steel mesh (zinc-coated) • Substrate separator depending on installation situation (woven wire mesh, steel mesh, root-protective foil etc.)

Surface paving (on site)

Steel mesh Radix

concrete foundation tile (on site)

Root Protection Bridges

The solution for new tree plantings and existing trees

• • • •

Ideal for designing avenues Ideal for integrating existing trees in new developments Optimal to achieve an asymmetrical extension of root zone Models for wheel loads of up to 1.5T (cars) and 5T (trucks)

Geotextile

Radix

Root Protection Bridges 67

Frankfurt on the Main Goethe University â&#x20AC;&#x201C; Campus Westend

Root Protection Bridges

Goethe University – FRANKFURT ON THE MAIN Root Protection Bridge RADIX Root Protection Bridges

Community of Wallenhorst, Osnabr端ck Redevelopment of the curch surroundings at the Old Pyer Churchlane

Root Protection Bridges

Community of Wallenhorst – OSNABRÜCK Root Protection Bridge RADIX Root Protection Bridges

Tree Grilles

Urban trees require special protection in order to ensure their long-term well-being. Next to sufficient water and oxygen, the prevention of soil compaction and the diversion of pressure away from the root zone is a prerequisite for healthy tree growth. The Tree Grilles in our ARBORIS series, which were presented with the red dot design award 2010, not only protect the root zone of urban trees against soil compaction caused by vehicles, but also offer additional protection for pedestrians thanks to their specially developed slip-resistant structure.

1. L ight tree grille frame for wheel loads of up to 1.5T

The grooves that are visible on the surface – HUMBERG’s patented anti-slip protection – are produced during the manufacturing process. The patented design blends in harmoniously with the overall appearance of the tree grilles and eliminates the necessity for slip-resistant materials to be applied subsequently. ARBORIS thereby links important safety aspects for tree and man with high demands with regard to quality and aesthetics. Support frames You can choose between three support frame models for all our tree grilles: 2. S uppor t frame for wheel loads of up to

1. Standard grille frame for wheel loads of up to 1.5T for pedestrian and light vehicle load, in two parts bolted

5T Including welded paving suppor t frame

2. Support frame with welded paving support frame for wheel loads of up to 5T, in two parts bolted 3. Support frame with separate outer frame, for wheel loads of up to 5T. Including a removable support frame for trees with very large root bales. Reinforced concrete foundation All reinforced concrete foundation rings are manufactured from C35/45, and are available in round or square and in one part of multiple parts.

3. S uppor t frame for wheel loads up to 5T Including separate outer frame

Tree Grilles

Cast Iron Grille Series – ARBORIS

Gratings

Aluminium Cast Grille – AERO

Laser Grilles

Tree Grilles 73

Support frames

1. Light tree grille frame for wheel loads of up to 1.5T

2. Support frame for wheel loads of up to 5T Including welded paving support frame

Wheel load • up to 1,5T

Wheel load • up to 5T

Paving support frame • Planting and paving can be carried out at different times (after paving, trees can only be planted through the aperture of the support frame)

Paving support frame: • After paving, trees can only be planted through the aperture of the support frame

Material • Parts bolted, sectional steel structure (inner segments and outer frame), hot-dip galvanised according to the DIN EN ISO 1461 standard • Including one-part or multiple-part concrete foundations to absorb lateral street pressures

Material • Parts bolted, hot-dip galvanised according to the DIN EN ISO 1461 standard • Including one-part or multiplepart concrete foundations to absorb lateral street pressures

Tragkonstruktionen

Secure substructure and stability to suit all requirements, 3 solutions for all HUMBERG Tree Grilles

3. Support frame for wheel loads up to 5T Including separate outer frame

Wheel load • up to 5T Inner and outer Support frame • Planting and paving can be carried out at different times (after paving, trees can only be planted through the aperture of the support frame) • Inner support frame can be removed and dismantled • Even after the path surface has been paved, it is possible to plant large trees with root bales that are larger than the inner aperture of the tree grille. Material • Parts bolted, sectional steel structure (inner segments and outer frame), hot-dip galvanised according to the DIN EN ISO 1461 standard

Tragkonstruktionen 75

ARBORIS ®

Trees are of vital importance for the design of urban habitats and people’s well-being. However, due to the difficult conditions in cities, urban trees require special protection systems to guarantee their long-term health. The tree grilles in the ARBORIS series unite innovative protective mechanisms for people and trees with high-quality workmanship and clear design. These cast-iron tree grilles are self-supporting and not only protect the root zone of urban trees against soil compaction caused by vehicles, but also offer additional protection for pedestrians thanks to their specially developed slipresistant structure. The grooves that are visible on the surface – HUMBERG’s patented anti-slip protection – form part of the individual designs and are created during the sand-casting process. They blend in harmoniously with the overall appearance of the tree grille and eliminate the necessity to apply slip-resistant material at a later stage. Accordingly, the HUMBERG’s ARBORIS tree grille series combines highest quality and aesthetic standards with modern safety requirements. Their functionality, ecological compatibility, sustainability and design immediately convinced the international jury that bestows the red dot design award, leading to our winning the internationally-prestigious award for the ARBORIS series in 2010. According to the » Code of practice for floors in work rooms and work areas with high risk of slipping « (BGR 181) issued by the German Employers’ Liability Insurance Association, operational outdoor pathways must fulfil requirements with respect to slip resistance for the assessment group R10 V4 and higher. Hitherto, it has been difficult for cast metal surfaces to achieve such a level. To test this, slip resistance was measured under laboratory condi-

ARBORIS tree grille series

tions according to the DIN 51130 standard on a » sloped surface« using special engine oil on the surface with test persons. To achieve R10, the test person must walk safely along the surface to be tested with an incline of at least 10 –19° using standard shoes. The test surface in AMELLUS® design achieved this effortlessly reaching an average value of 16.8°. The prestigious building materials testing institute, Baustoffprüfstelle Wismar (Germany), subsequently tested the displacement volume of the surface. This determines the amount of liquid in cm3 that the surface can displace at a minimum. This far exceeded the requirements by achieving V10 – the highest possible value. Consequently, ARBORIS® tree grilles are the only grey cast iron tree grilles on the German market that have proven to fulfil the modern anti-slip requirements in accordance with BGR 181.

The copyrighted designs with slip resistant surfaces HUMBERG anti-slip protection (DBGM)

ARBORIS tree grille series 77

59100

Alea®

Sizes* / Inner aperture/ Weight 1500 x 1500 mm / 700 x 700 mm / ca. 288 kg 2000 x 2000 mm / 800 x 800 mm / ca. 355 kg Material Cast iron (GG 25, according to the DIN EN 1561 standard) Wheel load 1.5T (cars) or 5T (trucks) Surface ﬁnishes Varnished (standard colour: black, matt) CDP (cathodic dip-paint) coating (on request) Scope of delivery 1. Tree Grille, 2. Support frame (see page 74) 3. Reinforced concrete foundation, 4. Fasteners (screws, screw-nuts etc.) * Fur ther sizes available on request

ARBORIS tree grille series

Amellus®

59101

Sizes* / Inner aperture/ Weight 1500 x 1500 mm / ø 700 mm / ca. 292 kg 2000 x 2000 mm / ø 800 mm / ca. 375 kg Material Cast iron (GG 25, according to the DIN EN 1561 standard) Wheel load 1.5T (cars) or 5T (trucks) Surface ﬁnishes Varnished (standard colour: black, matt) CDP (cathodic dip-paint) coating (on request) Scope of delivery 1. Tree Grille, 2. Support frame (see page 74) 3. Reinforced concrete foundation, 4. Fasteners (screws, screw-nuts etc.) * Fur ther sizes available on request

ARBORIS tree grille series

59102

Folium®

Sizes* / Inner aperture/ Weight 1500 x 1500 mm / ø 700 mm / ca. 280 kg 2000 x 2000 mm / ø 800 mm / ca. 365 kg Material Cast iron (GG 25, according to the DIN EN 1561 standard) Wheel load 1.5T (cars) or 5T (trucks) Surface ﬁnishes Varnished (standard colour: black, matt) CDP (cathodic dip-paint) coating (on request) Scope of delivery 1. Tree Grille, 2. Support frame (see page 74), 3. Reinforced concrete foundation, 4. Fasteners (screws, screw-nuts etc.) * Fur ther sizes available on request

ARBORIS tree grille series

Johann Wolfgang von Goethe (1749â&#x20AC;&#x201C;1832)

All theory, dear friend, is gray, but the golden tree of life springs ever green.

ARBORIS tree grille series

59103

Corona®

Sizes* / Inner aperture/ Weight 1500 x 1500 mm / ø 700 mm / ca. 320 kg 2000 x 2000 mm / ø 800 mm / ca. 400 kg Material Cast iron (GG 25, according to the DIN EN 1561 standard) Wheel load 1.5T (cars) or 5T (trucks) Surface ﬁnishes Varnished (standard colour: black, matt) CDP (cathodic dip-paint) coating (on request) Scope of delivery 1. Tree Grille, 2. Support frame (see page 74), 3. Reinforced concrete foundation, 4. Fasteners (screws, screw-nuts etc.) * Fur ther sizes available on request

ARBORIS tree grille series

Corona®-R

59108

Sizes* / Inner aperture/ Weight ø 1500 mm / ø 700 mm / ca. 170 kg ø 2000 mm / ø 800 mm / ca. 280 kg Material Cast iron (GG 25, according to the DIN EN 1561 standard) Wheel load 1.5T (cars) or 5T (trucks) Surface ﬁnishes Varnished (standard colour: black, matt) CDP (cathodic dip-paint) coating (on request) Scope of delivery 1. Tree Grille, 2. Support frame (see page 74), 3. Reinforced concrete foundation, Fasteners (screws, screw-nuts etc.) * Fur ther sizes available on request

ARBORIS tree grille series

59104

Molea®

Sizes* / Inner aperture/ Weight 1500 x 1500 mm / ø 700 mm / ca. 320 kg 2000 x 2000 mm / ø 800 mm / ca. 400 kg Material Cast iron (GG 25, according to the DIN EN 1561 standard) wheel load 1,0T (cars) oder 5,0T (trucks) Surface ﬁnishes Varnished (standard colour: black, matt) CDP (cathodic dip-paint) coating (on request) Scope of delivery 1. Tree Grille, 2. Support frame (see page 74), 3. Reinforced concrete foundation, 4. Fasteners (screws, screw-nuts etc.) * Fur ther sizes available on request

ARBORIS tree grille series

Molea®-R

59109

Sizes* / Inner aperture/ Weight ø 1500 mm / ø 700 mm / ca. 180 kg ø 2000 mm / ø 800 mm / ca. 300 kg Material Cast iron (GG 25, according to the DIN EN 1561 standard) Wheel load 1.5T (cars) or 5T (trucks) Surface ﬁnishes Varnished (standard colour: black, matt) CDP (cathodic dip-paint) coating (on request) Scope of delivery 1. Tree Grille, 2. Support frame (see page 74), 3. Reinforced concrete foundation, Fasteners (screws, screw-nuts etc.) * Fur ther sizes available on request

ARBORIS tree grille series

59105

Lumen®

ARBORIS tree grille series

Ambio®

59106

Sizes* / Inner aperture/ Weight 1500 x 1500 mm / ø 700 mm / ca. 292 kg 2000 x 2000 mm / ø 800 mm / ca. 375 kg Material Cast iron (GG 25, according to the DIN EN 1561 standard) Wheel load 1.5T (cars) or 5T (trucks) Surface ﬁnishes Varnished (standard colour: black, matt) CDP (cathodic dip-paint) coating (on request) Scope of delivery 1. Tree Grille, 2. Support frame (see page 74), 3. Reinforced concrete foundation, Fasteners (screws, screw-nuts etc.) * Fur ther sizes available on request

ARBORIS tree grille series

Gratings

The Orbis and Clatri grid series in round and square impress with their purist design and topclass workmanship and are available in two different design alternatives: 1. Linear optic (with flat-bar steel edge) 2. Grid optic

Gratings lend a modern touch for they blend in harmoniously and discreetly in public spaces thanks to their sophisticated lines. All our zinc-coated gratings are supplied with support frames consisting of an outer and an inner support frame, which sit on a one or multiple-part concrete foundation. The impacting surface tension forces are diverted away from the sensitive roots through the support frame and thus the root zones of newly-planted trees and existing trees are protected against soil compaction. In addition, the open top-side of the grid provides optimal conditions for soil respiration and irrigation. This ensures adequate supply of oxygen and water to the soil over the long term and thereby creates the conditions for healthy growth of the urban tree. On request, we can also supply our gratings in stainless steel or with a slip-resistant profile, thereby providing additional protection for pedestrians.

Gratings

SCHWETZINGEN Grating CLATRI Gratings

5931

Orbis Round Grating

Scope of delivery • Concrete foundation, one part or multiple parts • Outer frame

• Support frame, several parts, bolted • Round grid in two parts • Fasteners (Screws, screw-nuts, washers etc.)

Gratings

1,5T wheel load

5T wheel load

1500 mm

600 mm

300 mm

550 kg

800 kg

1800 mm

700 mm

300 mm

650 kg

950 kg

2000 mm

800 mm

300 mm

780 kg

1150 kg

2500 mm

800 mm

300 mm

1000 kg

1400 kg

360° Technical precision and clear contours

Advantages at a glance: • Two-part grid made of sectional steel (S235JR), linear or grid optic, hotdip galvanised according to the DIN EN ISO 1461 standard • Multi-part sectional steel construction (S235JR), hot-dip galvanised according to the DIN EN ISO 1461 standard (removable for planting large bales) • One part of multiple part concrete foundation ring (C30 / 37) • High structural quality through resilient and consistent meshing • Fast and easy assembly • Cost-effective solution • Very good soil respiration, optimal supply of water and nutrients for the root system • Deployable to extend accessible areas and seamless pedestrian crossings • Also available on request in stainless steel and slip resistant Grating (in two par ts) with 33 / 33 mm par tition for inser ting

Substructure Multiple par ts, bolted

Outer frame, multiple par ts Concrete foundation ring, one par t or multiple par ts

Gratings

5933

Clatri Square Grating

Scope of delivery • Concrete foundation, one part or multiple parts • Outer frame

• Support frame, several parts, bolted • Round grid in two parts • Fasteners (Screws, screw-nuts, washers etc.)

Gratings

1,5T wheel load

5T wheel load

1500 mm

600 mm

300 mm

700 kg

900 kg

1800 mm

700 mm

300 mm

900 kg

1200 kg

2000 mm

800 mm

300 mm

1000 kg

1350 kg

2500 mm

800 mm

300 mm

1300 kg

1700 kg

Linear Structure and Formal Functionality

Advantages at a glance: • Two-part grid made of sectional steel (S235JR), linear or grid optic, hotdip galvanised according to the DIN EN ISO 1461 standard • Multiple-part sectional steel construction (S235JR), hot-dip galvanised according to the DIN EN ISO 1461 standard (for planting large bales removable) • One part of multiple-part concrete foundation ring (C30 / 37) • High structural quality courtesy of sturdy and even meshing • Fast and easy assembly • Cost-effective solution • Very good soil respiration, optimal supply of water and nutrients for the root system • Utilisable to extend accessible areas and seamless pedestrian crossings • Also available on request in stainless steel and slip resistant Grating (in two par ts) with 33 / 33 mm par tition for inser ting

Built-in light (optional)

Substructure Multiple par ts, bolted

Concrete foundation ring, one par t or multiple par ts

Outer frame, multiple par ts

Gratings

Aluminium Cast Grille – AERO

The six-part Aluminium Cast Grille Aero is not only designed for use outdoors, but is also well suited for use indoors and helps underline the architectural concept for instance in shopping centres. The aluminium cast grilles manufactured by us are made of the weather-proof and corrosionresistant alloy G AL Si 12 and are therefore ideally suited for outdoor use. In comparison to other products available on the market, in which aluminium profiles are connected by threaded rots, the Aero product is literally cast in one piece – something which commands a decisive quality advantage and leads to greater stability and durability.

The scope of delivery of the AERO grilles includes – as do all HUMBERG tree grilles – a multiple-part support frame specially tailored to the wheel load, a grille frame with paving support frame, a reinforced concrete foundation and all the required fasteners (screws, screw-nuts etc.). Surface area grilles protect against soil compaction and the largely open surface structure also facilitates optimal gas exchange for the tree.

80x80cm

The Aero impresses in particular with its modern design and improved material-related handling which facilitates quick installation. The special, slip-resistant design provides additional protection for pedestrians.

Baumschutz-Rost – AERO

High-quality materials and functional design merge to form a timeless aesthetic.

Aero

59210

Dimensions / Aperture 2000 x 2000 mm / 800 x 800 mm Material Cast aluminium (G AL Si 12) wheel load 1,0T (cars) oder 5,0T (trucks) Surface finishes a) Plain aluminium b) Glass-bead blasted c) Powder-coated Scope of delivery 1. Tree Grille AERO (six-part), 2. Support frame, 3. Reinforced concrete foundation, 4. Fasteners (screws, screw-nuts, screw anchors etc.)

Baumschutz-Rost – AERO

Aero Surface Area Grille

Starting with the basic module (990 x 590 mm), the Aero grille can be expanded in increments of 590 mm or can be used as a pure surface area grille without the 80 x 80 cm tree aperture.

Our surface area grilles can be adapted flexibly to the individual local conditions and can also be asymmetrically arranged to make ideal use of the space available. The main difference to conventional tree grilles is that they do not have a separate slot for the tree trunk, but rather can be placed around the trunk as required so as to ensure a sufficiently large tree bed aperture. The Aero surface area grille not only protects the roots against compaction, but also allows optimal gas exchange thanks to its largely open design. The integrated steel substructure, in combination with the one or multiple-part concrete foundations, diverts impacting surface tension forces away from the sensitive roots. The Aero surface area grille with substructure is suitable for Tree Pit Construction types I and II.

Baumschutz-Rost â&#x20AC;&#x201C; AERO

3180

Surface area grilles represent an excellent addition and alternative to conventional tree grilles and expand the protected root area with open and self-supporting covering options. They are used, for instance, when existing car parks or traffic areas are upgraded at a later stage to protect the root zone of existing trees against soil compaction. Furthermore, installation is also recommended for newly-created tree sites if, for example, only one side borders a traffic area and the root zone needs to be protected against soil compaction in this area.

2000

2970 mm

Variable assembly and design One system for all tree sites

2000 mm

Baumschutz-Rost â&#x20AC;&#x201C; AERO

Laser Grilles

Tree protection grilles manufactured using laser-cutting techniques are always chosen when you require a product that is optimally tailored to your requirements and quantities in small or smallest series production levels. Consequently, we will manufacture even one individual disk in accordance with your requirements. There are many reasons for deploying laser grilles: • You want to realise your own design, which is tailored to the layout of your site • A listed paved surface may not be altered and specific specifications must be met • Existing trees are located off-centre and you would like to have the opportunity to adjust each tree grille individually, while nonetheless achieving a harmonious and uniform overall appearance • Deployment of special materials such as Cor-Ten-Steel In all of the above instances, a tree grille manufactured using the most modern laser technology is the ideal and often the most cost-effective solution. Each of our disks can be individually manufactured for you using various different steel grades and come equipped with a sturdy support frame made of sectional steel, so that, depending on the model, it is possible for cars and also trucks to drive over the surfaces. Of course, it is also possible to combine laser grilles with other tree protection products, for example subsurface tree grilles. Simply send us your individual design or select one from our range and we will be happy to make you a non-binding personal offer.

Laser Grilles

Highest precision assisted by state-of-the-art production technology to realise your creative ideas.

Laser Grilles

The Tree Grille of the future The solution for new plantings and existing trees

The size and shape of a laser grille is equivalent to the outside diameter of the corresponding prefabricated foundations and is available in round or square shapes. The laser grilles are two or multiple part, removable bolted together. The tree grille frames have a paving support frame.

The scope of delivery includes: • Laser grille with support frame (round or square) • Reinforced concrete foundation with road surface edge • Fasteners (screws, screw-nuts etc.)

1. Wheel load OO 1,5T (car) OO 5,0T (truck)

5 t

1,5 t

2. Size and shape = Prefabricated foundation dimensions OO OO OO OO OO

Ø1500 mm Ø1800 mm Ø2000 mm Ø2500 mm Ø3000 mm

OO OO OO OO OO

1500 x 1500 mm 1800 x 1800 mm 2000 x 2000 mm 2500 x 2500 mm 3000 x 3000 mm

3. Art and Dimensions der Baumöffnung OO OO OO OO

Round (Ø400 – Ø1000 mm) Square (400 x 400 – 1000 x 1000 mm) Free style (nach Zeichnung) Without tree aperture (as a root bridge or surface grille)

4. Material OO Steel, S235JR (EN DIN 10 027-1) OO Cor-Ten-Steel, rust-coloured surface OO Stainless steel, 1.4301, surface blasted

6. Surface finish and colour (depending on the material) OO Hot-dip galvanised OO Hot-dip galvanised and equipped with slip-resistant coating OO Grounded and powder-coated in RAL colour as requested

7. Accessories

OO Lighting

100

Laser Grilles

OO Irrigation lid (aluminium cast or steel)

8. Design (others on request or depending on customer requirements)

OO Diagonal stripes (Fig. with diamond-shaped tree opening)

OO Radial design (Fig. with round/circular tree opening)

OO Round / square holes (Available in variable dimensions and diameters)

OO Horizontal stripes (Quantity and width of stripes variable)

OO Mix of letters (Fig. with oval tree aperture)

OO Leaf design (Fig. with round/circular tree aperture)

Laser Grilles

101

59306

Ambio®-L

Basic dimensions* • Ø 1500 mm • Ø 2000 mm Materials • Steel, S235JR (EN DIN 10 027-1) • Cor-Ten-Steel, rust-coloured surface • Stainless steel, 1.4301, surface blasted

Molea®-L (Nr.: 59304)

Surface finishes a) Hot-dip galvanised b) Hot-dip galvanised and equipped with slip-resistant coating Scope of delivery (depending on the model) 1. Laser grille with Support frame 2. Reinforced concrete foundation 3. Fasteners (screws, screw-nuts, screw anchors etc.) * F ur ther sizes and all ARBORIS Designs available on request

102

Laser Grilles

Alea®-L (Nr.: 59300)

UNIVERSITY OF DUSSELDORF Laser grille Ambio速 -L with slip-resistant coating Laser Grilles

103

59320

Sorbus®-L

Basic dimensions* • 1500 x 1500 mm • 2000 x 2000 mm Materials • Steel, S235JR (EN DIN 10 027-1) • Cor-Ten-Steel, rust-coloured surface • Stainless steel, 1.4301, surface blasted Surface finishes a) Hot-dip galvanised b) Hot-dip galvanised and with slip-resistant coating Scope of delivery (depending on the model) 1. Laser grille with Support frame 2. Reinforced concrete foundation 3. Fasteners (screws, screw-nuts, screw anchors etc.) * Fur ther sizes available on request

104

Laser Grilles

59350

Grille System – Fraxinus®

The Fraxinus® surface area grille system features an impressive uniform surface design, which can be individually tailored to suit your requirements. It consists of laser-manufactured steel plates with design elements in a grid arrangement. A uniform surface design is achieved by the individual perforated pattern, formed from a basic element which is then transferred onto the desired surface area without offset.

You can provide us with your own basic pattern and also refer to existing designs. Our highly-economical manufacturing process allows us to manufacture even one individual disk. Materials • Steel, S235JR (EN DIN 10 027-1) • Cor-Ten-Steel, rust-coloured surface • Stainless steel, 1.4301, surface blasted Surface finishes a) Hot-dip galvanised b) Hot-dip galvanised and with and with slip-resistant coating Im Scope of delivery enthalten • Laser grille Fraxinus with Support frame • Reinforced concrete foundation • Fasteners (screws, screw-nuts etc.)

Cor-Ten-Steel Laser grille

Laser Grilles

105

Zurich â&#x20AC;&#x201C; Bahnhofstrasse New Protection for Roadside Trees

The 1.4 km Bahnhofstrasse in Zurich is home to a large number of banks and companies, in addition to numerous stores and luxury boutiques. The Paradeplatz is regarded as the centre of the Swiss financial sector, making it one of the most inďŹ&#x201A;uential places on earth. The costs per square meter and year for retail space directly on Bahnhofstrasse are the highest in Europe, and only comparable to Hong Kong or New York City. Over the next few years, the tram lines in this area are to be renewed. It is against this background that an examination is determining the extent to which existing tree sites need to be redeveloped or replaced. In close cooperation with the City of Zurich, the Engineering Office Ingenieurbureau Heierli AG and the company TMH Thomas Hagenbucher AG, it has been possible to develop a completely new tree grille.

Fig. 1 Lower Bahnhofstrasse around 1920

In order to satisfy the requirements of this unique location, a laser-manufactured tree grille was created, in which state-of-the-art computing, lasercutting technology and CNC technology were deployed. In order to be able to get a clear picture of design and effect, the responsible parties in Zurich spared no effort in getting the entire population involved in the design of their street. For this reason, samples of the tree grille were coated in three different colours, together with the corresponding guard for trunk protection. One of these colours will ultimately be selected.

Fig. 2 CNC machining of the laser grilles

All beauty considerations aside, much thought was also put into ensuring the safety of passersby and road users. The hot-dip galvanised steel construction is equipped with a special Swiss slipresistant coating and designed for the unusually heavy wheel load of up to 10t.

Fig. 3 Detail of steel sheet surface

106

Laser Grilles

Bahnhofstrasse â&#x20AC;&#x201C; ZURICH Laser grille with 10t Wheel load Laser Grilles

107

Tree Guards

Tree guards have an important contribution to make to the protection of new tree plantings and existing trees in our cities and communities. They encircle the trunk area and protect it reliably against damages. In addition to their functionality, our HUMBERG Tree Guards impress through their innovative design and highest-quality workmanship. All guards are composed of welded steel elements and are available in different surface finishes on request. For more information on this, please refer to the notes on the respective product pages. Our tree guards can either be combined with other tree protection products (for example different tree grilles such as subsurface tree grilles) to form system solutions or can be utilised separately using earth nails. Hence, when enquiring or ordering please inform us of the intended category of use and the installation situation, so that we can deliver the appropriate fastenings with your order.

108

Tree Guards

Fagus 110

Abies 112

Tilia 114

Betula 116

Malus 118

Ilex 120

Platanus 122

Amplexor 124

Robinia 126

Afzelia 128

Prunus 130

Carpinus 132

Corylus 134

Cornus 136

Tree Guards

109

Fagus

ø250

ø400

ø500

ø600

ø400

ø600 / 700

ø800

400 / 250

600 / 400

800 / 500

800 / 600

1800

5960.01

Models and total weight • 400 / 250 12 Struts • 600 / 400 16 Struts • 700 / 400 16 Struts • 800 / 500 20 Struts • 800 / 600 20 Struts

ca. 30 kg ca. 41 kg ca. 42 kg ca. 51 kg ca. 52 kg

Height above ground • 1800 mm Material • Steel S235JR (EN 10 027-1), 16 x 8 mm Flat-bar steel, welded on the edge Surface finish a) Hot-dip galvanised b) Hot-dip galvanised and powder-coated, black micaceous iron oxide, metallic microstructure c) Hot-dip galvanised and powdercoated, RAL colour as requested

110

Tree Guards

Scope of delivery (depending on installation) 1. Including mounting parts with level adjustment for tree protection products (Tree Grilles, Subsurface tree grilles) 2. Including ground pegs (for use without a grille) Assembly • In two parts, bolted

SAARBRÜCKEN Fagus – 800 / 500 Tree Guards

111

Abies

ø400

ø500

ø800

600

800

850

1000

1400

600 / 400

800 / 400

850 / 500

1000 / 500

1800

5960.09

Models and total weight • 600 / 400 16 Struts • 800 / 400 16 Struts • 850 / 500 16 Struts • 1000 / 500 16 Struts • 1400 / 800 48 Struts

ca. 42 kg ca. 45 kg ca. 46 kg ca. 48 kg ca. 80 kg

112

Tree Guards

1400 / 800

LIMBURG Abies – 800 / 400 Tree Guards

113

Tilia

ø400

ø500

ø600

ø680

ø780

ø1180

680 / 400

780 / 400

780 / 500

1180 / 600

1800

5962.01

Models and total weight • 680 / 400 12 Struts • 780 / 400 12 Struts • 780 / 500 12 Struts • 1180 / 600 16 Struts

ca. 34 kg ca. 35 kg ca. 36 kg ca. 49 kg

Height above ground • 1800 mm Material • Steel S235JR (EN 10 027-1), 16 x 8 mm Flat-bar steel, welded Surface finish a) Hot-dip galvanised b) Hot-dip galvanised and powder-coated, black micaceous iron oxide, metallic microstructure c) Hot-dip galvanised and powdercoated, RAL colour as requested

114

Tree Guards

COESFELD Tilia – 780 / 400 Tree Guards

115

Betula

ø400

ø500

ø600

ø680

ø780

ø1180

680 / 400

780 / 400

780 / 500

1180 / 600

1800

5962.02

Models and total weight • 680 / 400 12 Struts • 780 / 400 12 Struts • 780 / 500 12 Struts • 1180 / 600 16 Struts

ca. 30 kg ca. 32 kg ca. 34 kg ca. 44 kg

116

Tree Guards

GESCHER Betula â&#x20AC;&#x201C; 780 / 500 on Tree Grille Corona Tree Guards

117

5963.01

Malus

ø400

ø500

ø600

ø800

ø850

ø1200

600 / 400

800 / 400

800 / 500

1200 / 600

Models and total weight • 600 / 400 Ø 33,7 mm • 800 / 400 Ø 33,7 mm • 800 / 500 Ø 42,4 mm • 1200 / 600 Ø 42,4 mm

ca. 28 kg ca. 30 kg ca. 37 kg ca. 41 kg

Height above ground • 1800 mm Material • Steel S235JR (EN 10 027-1), Steelpipes, welded Surface finish a) Hot-dip galvanised b) Hot-dip galvanised and powder-coated, black micaceous iron oxide, metallic microstructure c) Hot-dip galvanised and powdercoated, RAL colour as requested

118

Tree Guards

PFUNGSTADT Malus – 800 / 500 Tree Guards

119

Ilex

ø400

ø500

ø400

ø500

ø600

ø800

ø600

ø800

ø1100

600 / 400

800 / 500

600 / 400

800 / 500

1100 / 500

1800

2400

5964.01

Models / Height above ground / Weight • 600 / 400 1800 mm ca. 36 kg • 800 / 500 1800 mm ca. 40 kg • 600 / 400 2400 mm ca. 44 kg • 800 / 500 2400 mm ca. 48 kg • 1100 / 500 2400 mm ca. 53 kg Material • Steel S235JR (EN 10 027-1), Ø 26,9 mm Steelpipes, welded Surface finish a) Hot-dip galvanised b) Hot-dip galvanised and powder-coated, black micaceous iron oxide, metallic microstructure c) Hot-dip galvanised and powdercoated, RAL colour as requested

120

Tree Guards

LUDWIGSHAFEN – OGGERSHEIM Ilex – 800 / 500 / 2400 Tree Guards

121

Platanus

ø400

ø500

ø400

ø600

ø700

ø800

700 x 700

600 / 400

700 / 400

800 / 500

700 / 400

1800

5966.02

Models and total weight • 600 / 400 ca. 41 kg • 700 / 400 ca. 46 kg • 800 / 500 ca. 49 kg • 700 x 700 / 400 ca. 48 kg

Height above ground • 1800 mm

Assembly • In two parts, bolted

Material • Steel S235JR (EN 10 027-1), 30 x 10 mm Flat-bar steel, welded Surface finish a) Hot-dip galvanised b) Hot-dip galvanised and powder-coated, black micaceous iron oxide, metallic microstructure c) Hot-dip galvanised and powdercoated, RAL colour as requested

122

Tree Guards

DARMSTADT Platanus – 800 / 500 Tree Guards

123

Amplexor

1800

5967.01

600

700

800

1000

600

700

800

1000

Models and total weight • 600 x 600 ca. 59 kg • 700 x 700 ca. 61 kg • 800 x 800 ca. 67 kg • 1000 x 1000 ca. 69 kg

Height above ground • 1800 mm

Assembly • In four parts, bolted

Material • Steel S235JR (EN 10 027-1), 40 x 40 mm and 60 x 60 mm square tube, welded Surface finish a) Hot-dip galvanised b) Hot-dip galvanised and powder-coated, black micaceous iron oxide, metallic microstructure c) Hot-dip galvanised and powdercoated, RAL colour as requested

124

Tree Guards

MARBURG Amplexor – 600 / 600 onto Quadro-3 Tree Guards

125

Robinia

1800

5968.01

ø560

560 / 1800

Models and total weight • 560 / 1800 ca. 50 kg • Further sizes available on request

Scope of delivery (depending on installation) • Including mounting parts for mounting on a tree grille

Height above ground • 1800 mm

Assembly • In four parts, bolted

Material • Steel S235JR (EN 10 027-1), welded Surface finish a) Hot-dip galvanised b) Hot-dip galvanised and powder-coated, black micaceous iron oxide, metallic microstructure c) Hot-dip galvanised and powdercoated, RAL colour as requested

126

Tree Guards

ROBINIA onto Laserrost Amellus速 -L Tree Guards

127

Afzelia

ø300

ø400

ø500

600

700

800

600 / 300

700 / 400

800 / 500

1800

5965.01

Models and total weight • 600 / 300 ca. 68 kg • 700 / 400 ca. 74 kg • 800 / 500 ca. 79 kg Height above ground • 1800 mm Material • Steel S235JR (EN 10 027-1), Flat-bar steel 50 x 10 mm, welded Surface finish a) Hot-dip galvanised b) Hot-dip galvanised and powder-coated, black micaceous iron oxide, metallic microstructure c) Hot-dip galvanised and powdercoated, RAL colour as requested

128

Tree Guards

KASSEL Afzelia – 700 / 400 Tree Guards

129

Prunus

ø350

ø500

900

900 / 350

900 / 500

1800

5971.01

Models and total weight • 900 / 350 ca. 52 kg • 900 / 500 ca. 55 kg • Further sizes available on request Height above ground • 1800 mm Material • Steel S235JR (EN 10 027-1), Flat-bar steel, 30 x 10 mm on edge, welded Surface finish a) Hot-dip galvanised b) Hot-dip galvanised and powder-coated, black micaceous iron oxide, metallic microstructure c) Hot-dip galvanised and powdercoated, RAL colour as requested

130

Tree Guards

PENZBERG Prunus – 900 / 500 Tree Guards

131

Carpinus

ø400

ø500

600

700

800

1000

600 / 400

700 / 400

800 / 500

1000 / 500

1800

5973.01

Models and total weight • 600 / 400 ca. 38 kg • 700 / 400 ca. 42 kg • 800 / 500 ca. 47 kg • 1000 / 500 ca. 52 kg

Height above ground • 1800 mm

Assembly • In two parts, bolted

Material • Steel S235JR (EN 10 027-1), 30 x 10 mm Flat-bar steel, on edge , welded Surface finish a) Hot-dip galvanised b) Hot-dip galvanised and powder-coated, black micaceous iron oxide, metallic microstructure c) Hot-dip galvanised and powdercoated, RAL colour as requested

132

Tree Guards

CARPINUS onto Tree Grille ALEA 速 Tree Guards

133

Corylus

1800

5974.01

ø500

500 / 1800

Models and total weight • 500 / 1800 ca. 65 kg • Further sizes available on request Height above ground • 1800 mm Material • square tube S235JR (EN DIN 10 027-1), 60 x 60 mm, welded Surface finish a) Hot-dip galvanised b) Hot-dip galvanised and powder-coated, black micaceous iron oxide, metallic microstructure c) Hot-dip galvanised and powdercoated, RAL colour as requested

134

Tree Guards

Scope of delivery (depending on installation) • Including mounting parts with level adjustment for tree protection products (Tree Grilles, Subsurface tree grilles) Assembly • In four parts, bolted

CORYLUS onto Tree Grille MOLEA 速 Tree Guards

135

Cornus

1850

5975.01

ø460 ø360 ø760

700 / 400

Models and total weight • 700 / 400 ca. 48 kg • Further sizes available on request Height above ground • 1850 mm Material • square steel S235JR (EN DIN 10 027-1), 12 x 12 mm, welded Surface finish a) Hot-dip galvanised b) Hot-dip galvanised and powder-coated, black micaceous iron oxide, metallic microstructure c) Hot-dip galvanised and powdercoated, RAL colour as requested

136

Tree Guards

CORNUS onto Cor-Ten-Steel Laser Grille AMBIO 速 -L Tree Guards

137

Tree Guard Rings

Apart from tree guards, tree guard rings also offer ideal trunk protection for new tree plantings and older urban trees. Their low height allows unobstructed view of the tree, which is nonetheless protected and optically framed by the modern design. Our tree guard rings are made of S235JR steel, are hot-dip galvanised according to the DIN EN ISO 1461 standard and can be supplied in all RAL colours on request. All tree guard rings are available in two models: 1. Screw-on 2. Stationary The first model allows you to combine the tree guard ring you have selected with a tree grill to form a functional system solution. The various stationary designs are designed in such as way to allow the tree guard ring to be anchored in the ground using concrete mixed on site and can therefore be used as a protective and also a guiding element in townscape planning. A tree guard ring can also be utilised to provide collision protection for parking ticket machines or charging stations for electro mobile vehicles.

138

Tree Guard Rings

Alnus 140

Ficus 142

Salix 144

Quercus 146

Ginkgo 148

Pyrus 150

Cedrus 152

Acer 154

Helix 156

Cercis 158

Ulmus 160

Pinus 162

Tree Guard Rings

139

Alnus

Model / Weight 1. Screw-on 2. Stationary

ca. 20 kg ca. 28 kg

500

5980

Sizes* • 500 mm / Ø950 mm Material • Steel tube S235JR (EN DIN 10 027-1), Ø 60 mm, welded and sticked together Surface finishes a) Hot-dip galvanised b) Hot-dip galvanised and powder-coated, black micaceous iron oxide, metallic microstructure c) Hot-dip galvanised and powdercoated, RAL colour as requested Scope of delivery (depending on the model) • Including mounting parts for assembly onto tree grilles • Designed to be set in concrete 950

* Fur ther sizes available on request

140

Tree Guard Rings

ALNUS onto Tree Grille FOLIUM 速 Tree Guard Rings

141

Ficus

Model / Weight 1. Screw-on 2. Stationary

ca. 10 kg / 13 kg ca. 15 kg / 18 kg 500

5981

Sizes* • 500 mm / 720 mm • 500 mm / 1000 mm Material • Steel tube S235JR (EN DIN 10 027-1), Ø 60 mm, einteilig , welded

Scope of delivery (depending on the model) • Including mounting parts for assembly onto tree grilles • Designed to be set in concrete

* Fur ther sizes available on request

142

Tree Guard Rings

500

Surface finishes a) Hot-dip galvanised b) Hot-dip galvanised and powder-coated, black micaceous iron oxide, metallic microstructure c) Hot-dip galvanised and powdercoated, RAL colour as requested

720 / 1000

FICUS onto Tree Grille AMELLUS 速 Tree Guard Rings

143

Model / Weight 1. Screw-on 2. Stationary

ca. 21 kg ca. 30 kg

Höhen über Boden / Durchmesser* • 600 mm, Ø 1000 mm • 800 mm, Ø 1000 mm Material • Steel tube S235JR (EN DIN 10 027-1), Ø 60 mm , welded, 2 Parts

600 / 800

Salix

400

5982

Scope of delivery (depending on the model) • Including mounting parts for assembly onto tree grilles • Designed to be set in concrete

144

Tree Guard Rings

1000

Surface finishes a) Hot-dip galvanised b) Hot-dip galvanised and powder-coated, black micaceous iron oxide, metallic microstructure c) Hot-dip galvanised and powdercoated, RAL colour as requested

BERLIN visualization: Tree Guard Ring SALIX onto ORBIS Tree Guard Rings

145

Quercus

Model / Weight 1. Screw-on 2. Stationary

ca. 24 kg ca. 38 kg

500

5984

Sizes* • 500 mm, Ø 1100 mm

Surface finishes a) Hot-dip galvanised b) Hot-dip galvanised and powder-coated, black micaceous iron oxide, metallic microstructure c) Hot-dip galvanised and powdercoated, RAL colour as requested Scope of delivery (depending on the model) • Including mounting parts for assembly onto tree grilles • Designed to be set in concrete

* Fur ther sizes available on request

146

Tree Guard Rings

1100

Material • Steel tube S235JR (EN DIN 10 027-1), Ø 60 mm , welded, dreiteilig

SCHWIEBERDINGEN Tree Guard Ring QUERCUS Tree Guard Rings

147

Ginkgo

ca. 30 kg ca. 42 kg 430 530

Model / Weight 1. Screw-on 2. Stationary

Höhen über Boden* • 530 mm / 430 mm Material • square tube S235JR (EN DIN 10 027-1), 60 x 60 mm , welded, 2 Parts Surface finishes a) Hot-dip galvanised b) Hot-dip galvanised and powder-coated, black micaceous iron oxide, metallic microstructure c) Hot-dip galvanised and powdercoated, RAL colour as requested

* F ur ther sizes available on request

148

Tree Guard Rings

Scope of delivery (depending on the model) • Including mounting parts for assembly onto tree grilles • Designed to be set in concrete

5985

GINKGO onto Tree Grille ALEA 速 Tree Guard Rings

149

Pyrus

Model / Weight 1. Screw-on 2. Stationary

ca. 24 kg ca. 34 kg

500

5988

Sizes* • 350 mm / 500 mm, Ø 1200 mm

* Fur ther sizes available on request

150

Tree Guard Rings

1200

Material • Steel tube S235JR (EN DIN 10 027-1), Ø 60 mm , welded, 2 Parts

ROSTOCK Tree Guard Ring PYRUS Tree Guard Rings

151

5989

Cedrus

Model / Weight 1. Screw-on 2. Stationary

ca. 10 kg (pro Element) ca. 14 kg (pro Element)

600

550

Sizes* • 600 mm / 550 mm Material • Flat-bar steel S235JR (EN DIN 10 027-1), 60 x 10 mm , welded 2, 3 or 4 Parts Surface finishes a) Hot-dip galvanised b) Hot-dip galvanised and powder-coated, black micaceous iron oxide, metallic microstructure c) Hot-dip galvanised and powdercoated, RAL colour as requested Scope of delivery (depending on the model) • Including mounting parts for assembly onto tree grilles • Designed to be set in concrete

* Fur ther sizes available on request

152

Tree Guard Rings

Ø800

CEDRUS onto Laser grille with ďŹ&#x201A;oral Design Tree Guard Rings

153

Acer

Model / Weight 1. Screw-on 2. Stationary

ca. 54 kg ca. 61 kg

550

5996

Material • Steel tube S235JR (EN DIN 10 027-1), Ø 60 mm , welded, 2 Parts

400

Sizes* • 550 mm, Ø 1000 mm

Scope of delivery (depending on the model) • Including mounting parts for assembly onto tree grilles • Designed to be set in concrete

* Fur ther sizes available on request

154

Tree Guard Rings

1000

Surface finishes a) Hot-dip galvanised b) Hot-dip galvanised and powder-coated, black micaceous iron oxide, metallic microstructure c) Hot-dip galvanised and powdercoated, RAL colour as requested

KASSEL Tree Guard Ring ACER Tree Guard Rings

155

Helix

Model / Weight 1. Screw-on 2. Stationary

ca. 49 kg ca. 56 kg

560

5997

Sizes* • 560 mm, Ø 1000 mm Material • Steel tube S235JR (EN DIN 10 027-1), Ø 60 mm , welded, 2 Parts

Scope of delivery (depending on the model) • Including mounting parts for assembly onto tree grilles • Designed to be set in concrete

* Fur ther sizes available on request

156

Tree Guard Rings

1000

Surface finishes a) Hot-dip galvanised b) Hot-dip galvanised and powder-coated, black micaceous iron oxide, metallic microstructure c) Hot-dip galvanised and powdercoated, RAL colour as requested

ROSTOCK Tree Guard Ring HELIX Tree Guard Rings

157

Cercis

Model / Weight 1. Screw-on 2. Stationary

ca. 38 kg ca. 48 kg 600

5998

Sizes* • 600 mm / 700 mm Material • Steel tube S235JR (EN DIN 10 027-1), Ø 76 mm and Ø 42 mm , welded, 3 Parts Surface finishes a) Hot-dip galvanised b) Hot-dip galvanised and powder-coated, black micaceous iron oxide, metallic microstructure c) Hot-dip galvanised and powdercoated, RAL colour as requested Scope of delivery (depending on the model) • Including mounting parts for assembly onto tree grilles • Designed to be set in concrete 700

* Fur ther sizes available on request

158

Tree Guard Rings

JENA Tree Guard Ring CERCIS Tree Guard Rings

159

Ulmus

Model / Weight 1. Screw-on 2. Stationary

ca. 40 kg ca. 50 kg 600

5999

Sizes* • 600 mm / 1250 mm Material • Steel tube S235JR (EN DIN 10 027-1) Ø 76 mm and Ø 42 mm, welded, 2 Parts Surface finishes a) Hot-dip galvanised b) Hot-dip galvanised and powder-coated, black micaceous iron oxide, metallic microstructure c) Hot-dip galvanised and powdercoated, RAL colour as requested

550

Scope of delivery (depending on the model) • Including mounting parts for assembly onto tree grilles • Designed to be set in concrete

1250

* Fur ther sizes available on request

160

Tree Guard Rings

ULMUS onto Tree Grille FOLIUM 速 Tree Guard Rings

161

Pinus

Model / Weight 1. Screw-on 2. Stationary

ca. 40 kg ca. 50 kg 600

5995

Sizes* • 600 mm / 1200 mm Material • Steel tube S235JR (EN DIN 10 027-1) Ø 76 mm and Ø 42 mm, 2 Parts (sticked together) Surface finishes a) Hot-dip galvanised b) Hot-dip galvanised and powder-coated, black micaceous iron oxide, metallic microstructure c) Hot-dip galvanised and powdercoated, RAL colour as requested Scope of delivery (depending on the model) • Including mounting parts for assembly onto tree grilles • Designed to be set in concrete 1200

* Fur ther sizes available on request

162

Tree Guard Rings

PINUS onto Tree Grille AMBIO 速 Tree Guard Rings

163

Expert knowledge in Tree Protection

Since 2010, Mr. Schröder has been working as an adviser to HUMBERG in particular with respect to current issues that relate to tree plantings, tree protection and vegetation technology. The HUNO ® WurzelStern® is a joint development of this partnership. Following his training as a horticulturist in the areas of “gardening, landscaping and nurseries”, in addition to many years of experience following this, Klaus Schröder successfully completed his studies in landscape architecture. After holding a variety of professional positions in private business, in the Parks Department and in the Department of Ecology and Environment for the City of Osnabrück, he went on to found and manage the municipal “Enterprise for Green Spaces and Cemeteries”. Klaus Schröder is a cofounder of the internationally renowned Osnabrücker Baumpflegetage (forum and exhibition for tree care). Between 1993 and 1999, he was a lecturer for the subject of Tree Care at the University of Applied Sciences Osnabrück. He was actively involved over many years as a member of the Urban Trees Working Group of the German Conference of Garden Authorities (GALK), in various national committees on rules and regulations as well as the European COST Action Workgroups - C3 (Diagnosis of urban infrastructure), E12 (Urban forests and trees) and C15 (Technical infrastructure and vegetation). Klaus Schröder has given numerous speeches at home and abroad and is known as the author of many scientific papers on the subject of trees. Although he has retired from active service now, he continues to act as a qualified expert on trees in a research group that is looking at how to prevent trees taking root in utility trenches and pipe sleeves.

164

Expert knowledge

Mr. Klaus Schröder, Dipl.- Ing.

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Expert knowledge

165

Fair plants are your triumph Bruns has been a solid and experienced partner in the landscape trade over the last 130 years. You can rely on our staffâ&#x20AC;&#x2122;s profound plant knowledge and commitment to finding the right solutions for you. We subscribe to modern quality management and are both cost-conscious and cost-efficient. Our production and logistics are constantly being adapted and optimised by way of the latest technology. Our nursery in Bad Zwischenahn offers a huge range of plants to suit the most diverse habitats and requirements. Our high-quality Acers, Oaks, Limes, Pines and Rhododendrons can be found growing all across Europe. More and more challenging projects such as urban squares, modern landscape gardens, garden shows as well as individual, small and large private gardens or even planted rooftops are being realised with quality plants from Bruns. And the Garden Centre customers with more specific needs will find a wide and up to date range of high-quality container plants. Bruns stands for the production of sustainable and environmentally compatible nursery plants. It is the mission embraced by the entire team. Our 320 highly skilled and experienced members of staff carry responsibility and care for the high standard and quality of our plants. You will be inspired by our projects and references. If you are interested in our range of products and services we look forward to hearing from you! Bruns-Pflanzen-Export GmbH & CO. â&#x20AC;&#x2020;KG Johann-Bruns-Allee 1 26160 Bad Zwischenahn Telephone: +49 4403 601-0 E-Mail: info@bruns.de

www.bruns.de

166

Partner in Tree Protection

167

168 168

Bibliography

BALDER, H. (1988): Wurzelverletzungen als häufige Ursache von Baumschäden in der Stadt. Das Gartenamt 37 (10): 625–627.

BRELOER, H. (1996): Verkehrssicherungspflicht bei Bäumen aus rechtlicher and fachlicher Sicht. Braunschweig: Verlag Thalacker.

BALDER, H. (1998): Die Wurzeln der Stadtbäume. Ein Handbuch zum vorbeugenden and nachsorgenden Wurzelschutz. Berlin: Parey.

BRUSE, M. (2003): Stadtgrün and Stadtklima. LÖBF-Withteilungen 27 (1): 66–70.

BARLEY, K. (1962): The Effects of Mechanical Stress on the Growth of Roots. Journal of Experimental Botany 13 (37): 95–110. BARLOW, P. W. (2003): The Root Cap: Cell Dynamics, Cell Differentiation and Cap Function. Journal of Plant Growth Regulation 21 (4): 261–286. BARLOW, P. (1995): Gravity perception in plants: a multiplicity of systems derived by evolution? Plant, Cell and Environment 18 (9): 951–962. BENFELDT, K.-D. (2007): Wie viel Raum braucht ein Baum? Neue Landschaft 51 (8): 33–36. BERGER, C. & LOHAUS, J. (2003): Zustand der Kanalisation in Deutschland. Aussagen zum Bedarf an Investitionen. WWT Wasserwirtschaft Wassertechnik (7 / 8): 10–16. BERGER, C. & LOHAUS, J. (2005): Zustand der Kanalisation in Deutschland. Ergebnisse der DWA Umfrage 2004. KA Abwasser Abfall 52 (5): 528–539. BMVBS - BAndESMINISTERIUM FÜR VERKEHR, BAU And STADTENTWICKLUNG (Hrsg.) (2005): Zusätzliche technische Vertragsbedingungen and Richtlinien für Landschaftsbauarbeiten im Straßenbau (ZTV La-StB 05). Dortmand: Verkehrsblatt-Verlag.

Competence in Tree Protection

DIN – DEUTSCHES INSTITUT FÜR NORMUNG E.V. (Hrsg.) (1978): DIN 1998. Unterbringung von Leitungen and Anlagen in öffentlichen Flächen; Richtlinien für die Planung. Berlin: Beuth. DIN – DEUTSCHES INSTITUT FÜR NORMUNG E.V. (Hrsg.) (1997): DINEN 1610. Verlegung and Prüfung von Abwasserleitungen and -kanälen. Deutsche Fassung EN 1610:1997. Berlin: Beuth. DIN – DEUTSCHES INSTITUT FÜR NORMUNG E.V. (Hrsg.) (2002): DIN 18915 – 18919. Vegetationstechnik im Landschaftsbau – Bodenarbeiten, Pflanzen and Pflanzarbeiten, Rasen and Saatarbeiten, Entwicklungsand Unterhaltungspflege von Grünflächen. Berlin: Beuth. DIN – DEUTSCHES INSTITUT FÜR NORMUNG E.V. (Hrsg.) (2002): DIN 18920. Vegetationstechnik im Landschaftsbau – Schutz von Bäumen, Pflanzenbeständen and Vegetationsflächen bei Baumaßnahmen. Berlin: Beuth. EHLERS, W.; KÖPKE, U.; HESSE, F. & BÖHM, W. (1983): Penetration resistance and root growth of oats in tilled and untilled loess soil. Soil Tillage Research 3: 261–275. EISWIRTH, M. (2000): Leckortung – Künftige Herausforderungen and Lösungen. EntsorgungsPraxis 18 (6): 52–57.

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Picture credits Reinhold Scheer

Fotografie Felix

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Timo Rybicki

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Franz Humberg

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René Schnelle

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Tobias Schwerdt

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Helmut Speckmann 64 Klaus Schröder

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Tom Beuers

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Kim Letz

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