For various reasons it may be necessary to remove trees,
there are two ways to do this. .

Directional Tree Felling: Where space and safety permit a tree can be felled in one piece.

Dismantling: Also known as Section Felling...
Very often space is limited and the tree must be taken down piece by piece. If the area below the tree is clear and free from obstructions cut branches can simply be allowed to fall. When branches are too large or heavy for the climber to hold and throw clear or obstructions prevent their 'free falling', then lowering ropes must be used.