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Posted: Wed Apr 02, 2003 12:47 pm
by madunphy
Hi all,

I have a topic in the archives about laying a mowing strip (the weather has held this project up almost a year!!). Anyhow we started it last weekend and have about half of it done. We are now at an arc that is obstructed by the house. It has a large radius of 13m, and the arc goes for about 4m. Because I think we will have problems eyeing it and due to the large radius, I was thinking of cutting out a template and using it as a guide between two know points.

What do people think? would this be a viable alternative?

Thanks

Mike

Posted: Wed Apr 02, 2003 3:02 pm
by 84-1093879891
Good to se you again, Mike :)

I've done you a sketch showing the offsets required from a 4m chord subtended from a 13m radius arc....

Image

...if you take A and B to be the known points you mention, then, at the mid-point of the chord, ie, 2m from either A or B, then the mowing strip needs to be offset by 154mm. If you need other intermediates, then at 1m from both A and B, the offset will be 116m.

With 3 (or 5) known points, now, eyeing in your arc of mowing strips should be relatively easy. :)

Posted: Mon Apr 07, 2003 8:36 am
by madunphy
Hi Tony,

Thanks for that. We tried the few points on the curve and then building the arc by sight, but we couldnt make any progress!! I suppose it takes years of practice. So we reverted to a cut template of about 1.5m in length, which we butted up to know points on the curve and it worked well for us.

So thats the strip down and I think we did quite a good job. Next task is to order the patio...

Cheers

Mike

(Edited by madunphy at 8:37 am on April 7, 2003)

Posted: Sun Apr 13, 2003 4:40 pm
by 84-1093879891
Did you get any photos, Mike?

Posted: Tue Apr 15, 2003 9:39 am
by madunphy
Hi Tony,

Not yet, I'll see if I can borrow the camera from work again..

Thanks

Mike