Running lines for curved walls / edging

[kingandy2nd]

Hi all,

I’m planning on laying a block paving drive soon, and then a garden wall.

Both require curved walls / edging, but how do you mark out with sting line for the curves.

I’ve done a bit of reading and I’ve seen this example using lots of strings/measurements

Is that kind of thing the best way or am I missing a trick?

The garden wall will follow the curve of the pavement so I’m not so worried about that one, but the edging kerbs for the driveway are completely new, so I’d like to get the curves right at the same time as getting the fall right for the driveway.

Thanks
Andy

 

[bernardgreen]

using lots of strings/measurements

It is one length of string with the ends fixed at points A and G. Moving point C with the string kept taut will trace out a parabola

 

[^woody^]

I'd just mark out a curve that looks right free hand, rather than some geometrically correct arc.

 

[stuart45]

How many different curves are there?

 

[Deleted member 292770]

I'd just mark out a curve that looks right free hand, rather than some geometrically correct arc.

easier said than done when you’re bedding kerbing in concrete.

 

[Nozzle]

 

[kingandy2nd]

I'd just mark out a curve that looks right free hand, rather than some geometrically correct arc.

Makes sense for getting the shape correct woody but I also need the get the fall correct as the driveway slopes toward the house

How many different curves are there?

It will be like an elongated S

 

[Old Salt]

Use a hosepipe?

 

[kingandy2nd]

Like this:

 

[^woody^]

Makes sense for getting the shape correct woody but I also need the get the fall correct as the driveway slopes toward the house


It will be like an elongated S

Pave it to the fall, then put the edge in, then do the cuts, then whack.

 

[kingandy2nd]

Pave it to the fall, then put the edge in, then do the cuts, then whack.

Everything I’ve seen / read so far has the edge kerbs in first…

 

[^woody^]

Everything I’ve seen / read so far has the edge kerbs in first…

Ideally you set the border to line and level and this acts as a guide for the paving plus it restrains the paving when it's whacked.

However there is nothing to stop you laying the paving and then either keeping it short of the edge, or taking it past the edge and then marking the edge.

The key thing is to allow for the depth the paving will whack down (depending on your bedding method) when laying the edge, and not to whack the paving until the edge is set.

 

[kingandy2nd]

Just found this online. Any thoughts or anyone used?

FLEXMARKER-KIT FMK

The FLEXMARKER-KIT FMK is a complete system to shape and mark tailor-made curves. Creating dynamically shaped paths without visual interruptions.

www.probst-handling.com

 

[Charlie George]

Just found this online. Any thoughts or anyone used?

FLEXMARKER-KIT FMK

The FLEXMARKER-KIT FMK is a complete system to shape and mark tailor-made curves. Creating dynamically shaped paths without visual interruptions.

www.probst-handling.com

Look like expensive fibreglass tent poles, Go outdoors sell sets 4.5m ish for about £6 a set, you could use these, iv'e used plastic trim in the past.

 

[kingandy2nd]

Look like expensive fibreglass tent poles, Go outdoors sell sets 4.5m ish for about £6 a set, you could use these, iv'e used plastic trim in the past.

Good point!

I’ve got a load of spare 5m upvc window trims so I could use them and some duck tape to the same effect