INVESTIGATION OF THE STABILITY OF PARK TREES FROM PLATANUS BY MEANS OF A PULLING TEST.

The stability of trees is an important issue in an urban environment. They provide many benefits including: shading, wind protection, decoration, relaxation, improved air quality and reduced temperatures. Unfortunately, urban trees sometimes pose real risks to people. They can result in significant damage to public and private property, as well as personal injury or, in extreme cases, death. Accurate assessment of tree stability and safety is therefore critical to preventing these highly undesirable outcomes. The stability of a group of two trees, genus Platanus, growing in the Arboretum of the Forest Research Institute -- BAS was studied using the static research method -- Pulling test. The root system of this type of tree is widespread, similar to linden and sycamore. The draw point is about the 10th meter from the height of the trees. With the mechanical power of a winch -- tirfor maximum about 10 kN and a tree slope of 0,25°. The tensile force-deformation diagram was constructed using the software. A stability factor (SF) of over 1.5 has been determined. This allows us to conclude that the two trees are absolutely stable under the prevailing wind direction and strength. [ABSTRACT FROM AUTHOR]