UKTC Archive

RE: Moling and air spading

Subject: RE: Moling and air spading
From: Philip Wilson
Date: Dec 06 2017 08:53:32
That's very helpful, Tim and Jim. I wonder how much access to the trench 
would be required to facilitate the working of the machine in London clay. I 
can see that shoring as it were from the side (below the roots) could be 
problematical. I'll continue my enquiries with the contractors...
Thanks again, Philip

-----Original Message-----
From: uktc-request@xxxxxx.tree-care.info 
[mailto:uktc-request@xxxxxx.tree-care.info] On Behalf Of Tim Moya
Sent: 05 December 2017 14:59
To: UK Tree Care
Subject: RE: Moling and air spading

Depending on soil type, air spade with vacuum extraction can be a very 
efficient means of excavation. It works very well in dry sandy soils. I 
recently attended an excavation to 2.5m depth  with extents of about 2m x 2m 
- the excavation took about 2 hours. One advantage is that the vacuum tube 
can be extended to extract soil without the need to enter the pit. It sucks 
up half bricks with no problem.

In this case there was an interesting use of clingfilm to attach the flexible 
extension. On really light dry soils I have seen it used without the need for 
an air spade.

However, as Jim says, any work within the pit will need shoring in order for 
people to work within the excavation.

Tim Moya




--
The UK Tree Care mailing list
To unsubscribe send mailto:uktc-unsubscribe@xxxxxx.tree-care.info

The UKTC is supported by Bosky Trees arboricultural consultancy 
http://www.boskytrees.co.uk/


---
This email has been checked for viruses by Avast antivirus software.
https://www.avast.com/antivirus




-- 
The UK Tree Care mailing list
To unsubscribe send mailto:uktc-unsubscribe@xxxxxx.tree-care.info

The UKTC is supported by Bosky Trees arboricultural consultancy
http://www.boskytrees.co.uk/