English
German
Italian
Slovakian
Francais
Polski
Facebook WebsiteOverview
Tree Stability Evaluation (TSE) is a calculation programme for evaluation of stability and safety against fracture of trees by means of tensile tests. With the help of the TSE calculation programme the sensor-measured data collected from the tensile test are calculate in relation to the estimated wind load in order to obtain safety-related information about the respective tree.
The calculation programme is based on data collected during detailed examination of a tree by means of a tensile text according to the WESSOLLY method. During this tensile test, the expert simulates a wind load by directing a specific moment of force into the tree by means of pulling equipment. High-resolution measuring devices (resolution: 1/100° or 1/1000 mm) record the trunk’s edge fibre strain and the trunk base’s tilting. However, introduction of force is preformed in such low dosage that no over-load is applied on the tree. I.e. the maximum tensile load is at approx. 40% of hurricane-rated wind loads. The wood structures are merely loaded by up to 40% of their critical strength. Consequently this test method is classified as non-destructive material examination methods.
The Stuttgarter Festigungskatalog [study on dynamic measurements of green wood], meteorological basic data (e.g. DAVENPORT, RUCK), provisions from DIN 1055 and the generalised tilting curve according to WESSOLLY are taken as basis data.
TOP