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Wildland Fire Chain Saw Glossary
Pre-course Work
FEBRUARY, 2004
NFES 2644
Danger Tree. See Hazard Tree.
DBH. Diameter of a tree at breast height (4.5 feet above ground
level).
Debark. To remove bark from trees or logs.
Devils Fork. A coniferous tree with multiple tops. These trees
make head lean size up difficult.
Direct Line. Any treatment applied directly to burning fuel such
as wetting, smothering, or chemically quenching the fire or by physically
separating the burning from the unburned fuel.
Dogs. Metal spikes mounted on a chain saw near the guide bar designed
to stabilize and support the chain saw during felling and bucking. Medium
size saws will usually have an inside dog while larger saws will have
an inside and an outside set of dogs. Chain saw dogs stabilize the chain
saw increasing the sawyer's efficiency in felling and bucking operations.
DolmarTM. A container which holds saw
fuel and chain oil in two separate compartments.
DOT. United States Department of Transportation.
DOI. United States Department of the Interior.
Dutchman/Bypass. Results from the horizontal and/or sloping cuts
of an undercut (face) not meeting or extending beyond each other. Very
hazardous. Can change the actual felling direction and cause loss of
control of the tree.
End Bind. One of the five basic tree positions commonly encountered
while bucking. An end bind situation occurs on steep terrain where the
force of gravity closes the bucking cuts.
EPA. Environmental Protection Agency.
Escape Route. A predetermined path of exit used by fallers when
felling or bucking. The essential components of an escape route are selection
of the desired direction and distance, prior to felling or bucking, and
a well cleared path through which to escape.
Experienced Person. A person who has been trained and has participated
in the subject process for a period of time, long enough to thoroughly
acquaint a person with all the facets of the job being performed.
Face. The side of the tree aligned with the predominate lean and/or
the intended lay. The side of the tree opposite from the backcut.
Facecut (undercut/notch). A 45° section of wood sawn and
removed from a tree's base. Its removal allows the tree to fall to the
predetermined lay. The face is comprised of two separate cuts, which
have a constant relationship; the horizontal cut must be of significant
depth to allow adequate hinge wood; the sloping cut must be angled enough
to allow a wide opening and the two cuts must meet each other without
overlapping (Dutchman).
Faller. A person employed in felling trees.
Faller A. An individual being trained or evaluated in introductory
level, non-complex chain saw operations. Work of A sawyers must be under
the supervision of a qualified Faller B or Faller C.
Faller B. An individual certified at the Faller A level who has
demonstrated sufficient judgment, skill and knowledge to be trained or
certified in moderately complex chain saw operations. Certified Faller
B individuals may work independently on project or fireline assignments
up to their level of skill. They demonstrate the judgment to decline assignments
that exceed their skill level.
Faller C. Individual who has demonstrated judgement and proficiency
in correctly handling complex sawing and felling in wildland fire operations.
Fell. To cut down trees.
First Aid Kit. As referenced in this course, a kit including blood
borne pathogen protective equipment (as a minimum, surgical gloves, face
masks, eye protection, and CPR clear-mouth barriers) in addition to standard
first aid supplies.
Forest Service Approved. An item that meets Forest Service specifications
and/ or drawings, or is procured under Forest Service authority.
Fork Top (twin top). A coniferous tree with two tops.
FSH. Forest Service Handbook.
FSM. Forest Service Manual.
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