Ovals and gravel

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lutonlagerlout
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Post: # 68837Post lutonlagerlout

starting a job monday and the client wants an oval lawn in the centre
how do you create a true oval?

also she wants some gravel but not our local 20mm stuff
i have been looking at prices for cornish and cumbrian stuff but its daylight robbery
anyone know a reasonable supplier who delivers nationwide?
will probably need at least 6 tonnes (about 120 M3)
she definitely wants a round pebble but i advised here against this as it will cause movement
thanks in advance
LLL :)
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rab1
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Post: # 68838Post rab1

first you need to know the size the client wants (area covered in lawn) and then take the length and width of the area (rectangle) the using the width size for ease i`ll call 2m wide and with a length of 6m.

You then you multiply the width by 3.14 to create a circle and divide by 2 to give the radius. mark the radius on the lawn area at both ends and then string line between each arc creating a true oval.
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GB_Groundworks
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Post: # 68839Post GB_Groundworks

isn't it 2 pegs in the ground then make a loop out of a circle then use that to draw the oval, just need the math to get it accurate

like this but seems very complicated http://www.redbridgemarquetrygroup.org/drawing_a_simple_oval.htm
Giles

Groundworks and Equestrian specialists, prestige new builds and sports pitches. High Peak, Cheshire, South Yorkshire area.

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rab1
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Post: # 68840Post rab1

i`m a sheetmatal worker to trade, trust me this is the easiest way to mark it out on a lawn. if your interested i could show you how to make an oval to round with an offset spigot lol.

now considered a dead trade and not recognised by cscs as the polite you girl on the phone told me but i can spend 1 year due to experience doing a nvq (not very qualified) and reclaim my gold card.
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rab1
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Post: # 68841Post rab1

to be honest what giles said will work but all depends on how accurate you want to be. :D
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lutonlagerlout
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Post: # 68842Post lutonlagerlout

I think giles solution is the one i recall
with your one rab although i can do the pi thing easily where is the centre of the arcs?
its not critical but it has to look right
thanks for that fellas :)
now who sells decent gravel for less than £200 a tonne?
LLL
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Bob_A
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Post: # 68847Post Bob_A

Mickavalon asked this question so he should know
http://ext.pavingexpert.com/cgi-bin....hl=oval

rab1
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Post: # 68858Post rab1

PM sent with sketch
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Pablo
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Post: # 68859Post Pablo

Here's how I do it. I find that the looped string method is to easy to mess up when you're doing larger areas because the tension has to be kept perfect or you could be out by several feet due to it stretching etc. Whenever I do it I work out it's width and lenth on the ground then bang in 2 pegs ( in this case the 2 crosses on each side) making sure they're square with the house or whatever. Then I use a single length of nylon string ( not builders string it's too stretchy) that is maked at exactly whatever the arc you want i:e half the width of a circle. Do this both sides and when they intersect you have an oval. Then free hand the top and bottom to smooth the curve and it's job done. It's simpler easier and there's less chance of a mistake. I'd use Rab's method or the loop for very small ovals but not large ones. I hope that makes sense.
Image




Edited By Pablo on 1317583108
Can't see it from my house

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