Setting string line

Apologies if this is a stupid question, its my first time!

When setting up a string line for the posts, should the string line be set in front of the post or behind the post?

Does it make a difference?

Also should the string line touch both corners and the face of the post?

Doesn't matter, as long as the posts are all put in the same side!

Don't just reply on the string, they can all be touching the string but not be straight, IE: some leaning slightly in, some slightly out at the top. Use a level, or better, get a post level like this.
https://www.wickes.co.uk/Wickes-Hin...Pi09v_bpFvh-MgBWzzwaAluiEALw_wcB&gclsrc=aw.ds

Deluks said:

Doesn't matter, as long as the posts are all put in the same side!

Don't just reply on the string, they can all be touching the string but not be straight, IE: some leaning slightly in, some slightly out at the top. Use a level, or better, get a post level like this.
https://www.wickes.co.uk/Wickes-Hin...Pi09v_bpFvh-MgBWzzwaAluiEALw_wcB&gclsrc=aw.ds

Click to expand...

I've set the first post, is the string line sufficient enough to ensure that if i position the last post that it will be parallel between the first and last post?

I'm concerned that by the time i get to the last post it wont be straight and it could be further in or further out to the first post

Not sure if this is right, for peace of mind what I've done is measure the distance of the first post to the face of the property which is 3.20 metres

I've then gone to the other end measured 3.20m again and then fixed the string line roughly to where the last post will be fixed, whilst also ensuring the string line is touching the first post on the other end

Would that be the correct approach?

How can i ensure its straight and level (in and out) and not out on the other end?

Set the line at the front and at the top horizontal edge of the posts. String the line between the two outer most posts, or if you don't know where the last post will be, you'll need to set op a dumpy or temporary post

Alternatively mark a line on every post at the same distance down from the top and set the line at low level

Better still, use both above and you don't need to plumb every post

Keep intermediate posts back of the line by a millimetre or two and pull the line as tight as you can. Check the intermediate posts now and again to ensure they are not on the line