A clove hitch is a versatile knot primarily used for attaching a rope to an object, like a post or rail, or for securing the end of a rope to a carabiner. It's known for being easy to tie and adjust, making it useful in various situations, including climbing, camping, and general rigging. However, it's important to note that the clove hitch is not considered a very secure knot on its own and is often backed up with additional hitches like two half hitches.

The Hitch Climber System is a popular and efficient climbing system used by arborists, utilizing a DMM Hitch Climber pulley, two carabiners, and a friction hitch (like a prusik). It allows for smooth ascent and descent while working in trees. The system is designed to keep the climbing line and the friction hitch in a straight line, improving efficiency and preventing the hitch from snagging.

Negative rigging in tree work involves lowering cut pieces of the tree with the rigging point (e.g., block or pulley) below the cut, creating a situation where the cut piece falls before the rigging line becomes taut. This technique is used when a positive rigging system (where the rigging point is above the cut) is not feasible. While effective, it results in higher impact forces on the rigging system due to the freefall of the cut piece.

Basic tree rigging involves using ropes and specialized hardware to control the descent of tree limbs or sections during removal, minimizing risk to the climber, ground crew, and surrounding property. Techniques range from simple branch lowering to more complex systems for larger limbs and sections.

Chainsaw safety involves using proper techniques and protective equipment to prevent injuries. Key aspects include using a two-handed grip, maintaining secure footing, and being aware of the bar's nose to avoid kickback. Wearing appropriate personal protective equipment (PPE) like chainsaw chaps, a helmet with face shield and ear protection, and sturdy boots is crucial.

How to correctly start a chain saw.

Personal protective equipment (PPE) is required for anyone working in the arb world. Every climber should own and use (at least): a helmet, chainsaw protection for the legs, eye and hearing protection, and gloves. Ground workers also need a full compliment of safety gear, depending on tasks performed.

A conventional notch, also known as a traditional notch, is a common tree felling technique that involves a 45-degree angled cut and a horizontal bottom cut, forming a wedge shape. While familiar to many loggers and suitable for certain situations, it offers moderate control and a higher risk of kickback compared to other methods like the open-face notch.

The "Humboldt notch" is a tree felling technique used to control the direction and manner in which a tree falls, particularly on slopes or when extra control is needed. It's characterized by an inverted "conventional" or "open-face" notch, where the angled cut is below the flat cut. This design helps the tree "jump" off the stump and fall cleanly, minimizing wood damage and making it safer for the operator.

Open-face notching is a tree felling technique that uses a wide, angled notch (typically 70-90 degrees) to control the direction of fall. This method is favored for its safety and control, allowing the tree to fall with the hinge intact until just before impact, minimizing the risk of it breaking off prematurely and potentially injuring the operator.

Climb lines for different purposes understand wich to use.

ANSI pruning standards as set by osha

Ansi safety standards set for arborists

Understanding tree anatomy

Understanding cork canbium layer

Instead of leaving the hinge centered, cut deeper on one side of the face notch. This creates a thicker hinge on the side that will act as the primary pivot point for controlling the fall.

How to and use

Explanation

Explanation

Explanation

Description

Understanding dynamic loading