types of notches for tree felling

Tree types susceptible to splitting. 4 Tree Felling Techniques Conclusion.

Etool Logging Manual Operations Felling Trees Making The Cuts Special Techniques For Felling Difficult Trees Unacceptable Practices For Felling Difficult Trees Occupational Safety And Health Administration

Opening angle of at least 45.

. Less danger of kickback and other. This cut should be made about 3 inches above the bottom of the V-shaped cut. So lets describe the different types of notches and the advantages and disadvantages of each.

3 Using a Chainsaw to Cut a Notch and Hinge. Illustrates how to fell a tree using the Notch and Back-Cut technique. The width should be 10 of tree diameter at breast height.

Make another cut into the notch above your first cut at a 45-degree angle to cut out all of the wood for a clear hinge. Check that the apex of the notch is clean and perpendicular. Also learn hinge cutting and tree notching techniques for maintaining.

Horizontal cut has the same angle as the felling cut. Make sure to use plastic wedges as opposed to metal. The felling cut is slightly above level of the directional notch.

The undercut must be of a size so the tree will not split and will fall in the intended direction. The final cut of tree felling is the back cut. The safe felling of a tree using an open face notch consists of making three precise and strategic cuts.

Ideally the sink extends to 20-25 of the tree diameter. Special techniques are used for difficult trees. Well suited for thicker trees on steep slopes.

This is a safe and efficient way to fell a tree that is on a steep slope or prone to splitting. When the tree starts to fall quickly walk away from the tree at a. 32 Conventional Felling Notch.

The top cut the pluge cut and the back or felling cut. Many factors dictate where a tree will fall and an aimed notch does not guarantee the tree will fall in that direction Line up your felling sights. Just before tree hits ground.

There are three types of notches commonly used in the logging industry by chainsaw operators in tree felling. The back cut is what disconnects the tree from the stump and creates a hinge for the tree to fall. It also produces a low quality butt.

26 Humboldt Directional Notch. First select a spot on the opposite area of the notch. Well suited for thicker trees on steep slopes.

When cutting on flat ground though you lose length when you use the Humboldt which is where a conventional top notch is better. Greater accuracy of felling into target area. Make A Back Cut.

As far as safety a tree cut with a. 14 - 13 of tree diameter. You can compare this notch with the Humbolt and Conventional Notches.

Make the back cut go deep into the middle but let it not meet the tip of the V-shaped cut in front. 25 Conventional Directional Notch. Old loggers Felling technique used to keep trees on the stumps when being.

Horizontal cut has the same angle as the felling cut. 3 Using a Chainsaw to Cut a Notch and Hinge. Wherever these sights are pointing when cutting the notch should indicate the direction the tree should start to fall.

Make the cut approximately 18-20 inches from the ground no higher than your hip at a right angle. Conventional notch 35 degrees plus or minus open Advantages. The Humboldt cut was originally designed as a good way to cut timber on a hillside because you could keep your notch on the downhill side of the stump and not lose material.

The cut should be made ¼ of the diameter of the tree or up to ⅓ of the diameter but no deeper. Cut downward until the length or width of the cut is 80 percent of the diameter of the tree trunk. The same problems exist with this tech-nique as with cutting above the notch.

Make the top cut first. Hinge stays intact until tree hits ground. 24 Open-Faced Directional Notch.

Types of tree felling cuts uk. Move to the other side of the tree and start slowly cutting into the tree until you meet your notch cut. Meaning that you need a hinge to help you control the felling.

Make the top cut first and then the bottom cut of the notch. Be sure to have a safe and clear work zone as well as a clearly defined exit path. 14 - 13 of tree diameter.

You should ensure that it links about 95 of the tree. Highlights of Manual Felling Techniques. Once the tree starts to fall you move away from the tree at the aforementioned 45-degree.

Plastic wedges are far less likely to dull your saw chain if it comes in contact with the wedge. Opening angle of at least 45. When your V-shaped cut is ready go to the opposite side of the tree and make another cut.

By-passing the cutting of the notch will re-duce hingewood strength and will allow the tree to freefall without control. Felling wedges can then be used during the final cut to assist the tree in beginning to fall. 14 - 13 of tree diameter.

The felling cut is slightly above level of the directional notch. The notch should be at roughly knee-height should cut to the center of the tree and should look like a shallow v. Tree types susceptible to splitting.

This is a safe and efficient way to fell a tree that is on a steep slope or prone to splitting. Choosing the right felling cut. Then cut the undercut up to and even with the final position of the top cut it is important the two cuts meet evenly and cleanly with no by-pass or mis-alignment.

This cut is created on the opposite side of the notch. Once the front notch is cut you can then make the back cut with your chainsaw. An undercut must be made in each tree being felled.

Sizeup Search For Overhead Hazards Debris Falling From Above Causes Over One-half Of All Felling Accidents Practice Watching Overhead While Cutting Occasionally Glance At The Saw Kerf And Top Of The Tree Check For Snags Standing Dead Or Dying Tree Snags May Fall At Any Time Due To Wind Or Vibration From A Felled Tree Cut Any Snags In The Felling Area First. Most commonly used and recognized. This cut lessens the chance of meeting the notch or leaves an inaccurate hinge.

The width of the back cut should be about 10 of the diameter of the tree trunk. Point of notch closure. Quick animated sequence to show the expected outcome of implementing the steps describ.

23 Back Cut or Felling Cut. Plastic wedges and a STIHL axe built for felling are vital to maximizing the efficiency of your felling operation. Problems trees heavily weighted in one direction.

Of the felling of the tree. 31 Open-Faced Directional Notch. Learn the proper way to notch a tree by creating different notches during tree felling.

Open Face Felling Notch