How wrong is this?

20221101_135506.jpg
 

ARW

Member
Location
Yorkshire
Assuming it’s meant to be a box strut
A box strut is meant to be 2x strainer posts, the strut post that’s horizontal should be an 8ft post, double the height of the fence, the brace wire should be at the base of the end strainer post and top of the other in line with the strut post. The brace wire should be heavy duty, tight and less then 45 degrees in angle (hence the length of the strut 8ft) any angle greater than 45 degrees increases the chance of it acting like a jack and pulling the end strainer out of the ground when pressured.
The strut post should be set into the strainer posts to stop it getting pushed out.

this arrangement is doing nothing, the strainer will lean over when the wire gets pulled and the intermediate post with follow, the strut will also fall out as it doesn’t look chiselled in or nailed
 

Dry Rot

Member
Livestock Farmer
There needs to be a triangle of forces. Definition: "A triangle of forces is a triangle whose sides represent the magnitudes and directions of three forces whose resultant is zero and which are therefore in equilibrium". (i.e. it shouldn't move or tilt.

The tensions/compressions should be equal so the square stays stable (i.e. square) and the whole unit will have to move if the fence is to become slack -- in theory. For the line to move to the right, the square will need to become diamond shaped and the two posts will lean to the right.

Forestry Commission Fencing Guide


Page 7, Fig 5 (b)

Screenshot 2022-11-01 at 19.34.26.png
 

Socksitis

Member
Thank you @Dry Rot that guide is ver useful. I am looking at the guidelines for FG2 Sheep neeting and it states:
notch struts into the straining post at an angle of no more than 45 degrees.

Hmmm, we have done the above, anyone know if that is acceptable. I cannot share a photo - will need to look up how to do that
 

Tim G

Member
Livestock Farmer
Thank you @Dry Rot that guide is ver useful. I am looking at the guidelines for FG2 Sheep neeting and it states:
notch struts into the straining post at an angle of no more than 45 degrees.

Hmmm, we have done the above, anyone know if that is acceptable. I cannot share a photo - will need to look up how to do that
Horizontal struts are less than 45°.
 

renewablejohn

Member
Location
lancs
Cannot see anything wrong with it apart from the tension wire not being installed (stay wire on dry rot picture) I normally tension these wires using a stick through the two wires and twisted then tied off.
That said it would not be installed on our land as we dont use barbed wire.
 
Last edited:

Landrover

Member
It's looks awful, stay/brace doing nothing, wire never been pulled tight. Was it put up by someone that calls themselves a fencing contractor ?
 

snarling bee

Member
Arable Farmer
Location
Bedfordshire
There needs to be a triangle of forces. Definition: "A triangle of forces is a triangle whose sides represent the magnitudes and directions of three forces whose resultant is zero and which are therefore in equilibrium". (i.e. it shouldn't move or tilt.

The tensions/compressions should be equal so the square stays stable (i.e. square) and the whole unit will have to move if the fence is to become slack -- in theory. For the line to move to the right, the square will need to become diamond shaped and the two posts will lean to the right.

Forestry Commission Fencing Guide


Page 7, Fig 5 (b)

View attachment 1073573
Around our solar park this arrangement has pulled the corner post out of the ground. Need an X of stay wires.
 

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