1. Home
  2. Education
  3. Forestry

Logging Terms  - L -

LANDING: Any place where logs are laid after being yarded and before transport to the worksite.

LAY: Refers to either the position in which a felled tree is lying or the intended falling place of a standing tree.

LEAD: Predetermined direction of falling the trees of a particular strip or area in regard to the relation of the trees to one another and their combined relationship to the surrounding terrain.

LEAD: The established direction in which all trees in a quarter or strip are to be felled, usually governed by the terrain of the area, or its general slope or skid road system.

LEAN: Refers to the directional tilt of a tree away from its vertical position. Many times two lean forces may be in play in the same tree. They are referred to as head lean and side lean. The lean, or leans, of a tree can be easily established with the use of a plumb-bob or axe handle.

LEANER: A tree that leans excessively, not growing straight.

LEG PROTECTOR: Ballistic nylon pad attached to one or both pant legs to protect the leg from contact with the saw chain. It can be attached to either the inside or outside of the pant leg.

LIFT TREE: An intermediate support for skylines.

LIGHTNING STRIKE: Tree that has been struck by lightning.

LILY PAD: A thin slice of wood, sometimes taken off the stump and used to cover the saw if it's to be left out.

LIMB LOCK: A series of cuts made on limbs to release  back or side pressure and create a stay in the limb that will prevent the limb from either kicking back and striking the logger or pinching the saw.

LIMB LOCK: Limbing technique used to more safely handle back pressure and sideways pressure on limbs in order to reduce the liklihood of a limb under pressure kicking back and striking the logger's leg or pinching the saw.  Two bypassing cuts are made, one on the top side and one on the bottom side of the limb (top and bottom refer to the top and bottom of the limb as if the tree were standing up).  The cut on the top of the limb is made closer to the trunk of the tree and the cut on the bottom is made further out on the limb.  This creates a step in the limb which helps prevent the limb from kicking out or back toward the logger.

LIMBING: To cut branches off felled trees.

LOADING BOOM: Any structure projecting from a pivot point to guide a log when lifted.

LODGED TREE (Hung Tree): A tree leaning against another tree or object which prevents it from falling to the ground.

LOG: A segment sawed or split from a felled tree, such as, but not limited to, a section, bolt, or tree length.

LOG DUMP: A place where logs are removed from transporting equipment. It may be either dry land or water, parbuckled over a brow log or removed by machine.

LOGGING MACHINE: A machine used or intended for use to yard, move, or handle logs, trees, chunks, trailers, and related materials or equipment. This shall include self-loading log trucks only during the loading and unloading process.

LOGGING OPERATIONS: Operations associated with felling and moving trees and logs from the stump to the point of delivery, such as, but not limited to, marking danger trees and trees/logs to be cut to length, felling, limbing, bucking, debarking, chipping, yarding, loading, unloading, storing, and transporting machines, equipment and personnel to, from and between logging sites.

LOG STACKER: A mobile machine mounted on a wheeled or tracked chassis, equipped with a frontally mounted grapple, tusk, or forklift device, and employed in the loading, unloading, stacking or sorting of logs.

LONG-BUTT: After a tree is felled a section of the butt-end may be sawn off because of rot.

LONG STICKS: An overlength log that creates a hazard by exceeding the safe perimeters of the landing.

Back to Index

 

Explore Forestry

About.com Special Features

A Smarter Future

Tips that will help finance your education, excel in the classroom, and advance your career. More >

How to Ace the GRE

Being well prepared is the first step; here are more essential suggestions. More >

  1. Home
  2. Education
  3. Forestry

©2009 About.com, a part of The New York Times Company.

All rights reserved.