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A stump grinder is a machine designed to remove tree stumps by using a rotating cutting disc that chips away the wood. The machine typically features a cutter wheel with fixed carbide teeth. The cutter wheel's movements are controlled by hydraulic cylinders , which allow it to move laterally and vertically to grind through the stump.
The calculations involve some basic trigonometry but these calculations can easily be done on any inexpensive scientific calculator. Sine height measurement. Situations where the top of the tree being measured is above eye level and the base of the tree being measured is below eye level is the most common situation encountered in the field.
A tree caliper. The two most common instruments used to measure DBH are a girthing (or diameter) tape and calipers.. A girthing tape actually measures the girth (circumference) of the tree; the girthing tape is calibrated in divisions of π centimetres (3.14159 cm).
Tree girth measurement diagram. Tree girth is a measurement of the circumference of tree trunk. It is one of the most ancient, quickest, and simplest of foresters' measures of size and records of growth of living and standing trees.
Grubbing or clearing is the removal of trees, shrubs, stumps and rubbish from a site. This is often at the site where a transportation or utility corridor, a road or power line, an edifice or a garden is to be constructed. Grubbing is performed following clearance of trees to their stumps, preceding construction. [1]
The resulting living stumps are called stools. New growth emerges, and after a number of years, the coppiced trees are harvested, and the cycle begins anew. Pollarding is a similar process carried out at a higher level on the tree in order to prevent grazing animals from eating new shoots. [1]