NPTC felling small trees upto 200mm diameter

[KTS]

Could someone help with this question. 
80% cut.

make a cut 80% of the diameter of the tree the direction you want to fall. From the opposite side make a angled cut to meet up with the cut.

[Stere]

Whats the question that reads like confusing instructions?

 

Maybe something to do with this :

 

[Dan Maynard]

Are you asking about the 80% ?

 

This is the width of the notch, which always seems a strange way to describe it to me. Roughly 20% of the diameter will be how far in to the stem to cut ie how deep.

 

From the opposite side sounds like back cut, don't angle this just come straight in at a height slightly above the bottom of the notch.

[Tommy_B]

Yep. That's it. Used for crown locked trees/coppice up to 200mm etc. Angled 20% down and then pull off the stump

[Dan Maynard]

Ah missed the 200mm bit.

 

So a spear cut then?

[KTS]

This is the nptc question. 80% front cut trees under 200mm. Where the surrounding crown cover doesn't allow the tree to fall. 

 

Make a cut 80% of the diameter into the front of the stem in the felling direction. The second cut is made on the opposite side at an angle allowing the two cuts to meet. The tree can then removed from the stump.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

[5thelement]

1 hour ago, KTS said:

This is the nptc question. 80% front cut trees under 200mm. Where the surrounding crown cover doesn't allow the tree to fall. 

 

Make a cut 80% of the diameter into the front of the stem in the felling direction. The second cut is made on the opposite side at an angle allowing the two cuts to meet. The tree can then removed from the stump.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

What are you asking here, you have written the description of the 80-20 front cut, it’s not a question. 
What is it you don’t understand?

[Doug Tait]

13 hours ago, Dan Maynard said:

Ah missed the 200mm bit.

 

So a spear cut then?

 

Spear cut is a different one. The 80% cut mentioned by OP is horizontal with first cut then angled cut downwards from back side to meet the first cut and release.

 

[Gordon S]

Pardon my general ignorance, I don't remember either of these methods from NPTC assessments. Have they been added? I would have thought If you put a 80% horizontal cut in a 200mm (8") tree you are in danger of trapping your bar? Unless the crown is really suspended? 

Also I thought spear cut was a single steep angle cut used on much smaller vertical branches if you wanted them to fall straight down rather than hinge?

Clearly I'm missing something as Doug has quoted NPTC text.

 

 

 

[Doug Tait]

49 minutes ago, Gordon S said:

Pardon my general ignorance, I don't remember either of these methods from NPTC assessments. Have they been added? I would have thought If you put a 80% horizontal cut in a 200mm (8") tree you are in danger of trapping your bar? Unless the crown is really suspended? 

Also I thought spear cut was a single steep angle cut used on much smaller vertical branches if you wanted them to fall straight down rather than hinge?

Clearly I'm missing something as Doug has quoted NPTC text.

 

 

 

 

5thelement is better placed to give an opinion on the assessment criteria.

I'm like you, can't really remember what was required.

 

I'll use a spear cut in the hope a piece will drop freely, the other cut when you're looking for it to stay put when you finish the cut until you're ready to pull it off. Used this extensively on Friday morning removing tight, upright grown connies where the branches are intertwined, lets you cut then ditch the saw for more control when you wrestle it out with the usual garden ornaments and plants around the base.