How much sand and rubber to top up an existing 20x40 arena?

bumblebee_

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Hey Guys,

I am possibly looking at topping up my existing silica and and rubber arena, but not sure how much sand a rubber I would need? Is there anyone out there that would give me an idea on how many tonnes I would need?
I would say the surface is quite low, probably the depth of the existing surface is around 2" in places (with builders sand underneath) which is obviously very low. What sort of depth am I looking at needing? Mainly flatwork use with occasional jumping if that makes any difference. I'm concerned if I put too much sand on it it will ride very deep which I would like to avoid, so also looking at replacing the rubber too. Just unsure on quantities of both that I would need.

Any help would be massively appreciated. All I have to offer is Maryland Cookies!! 🤪🍪
 
Maths assuming 40 x 20 arena wanting 6 inches (15cm ) of surface


40 x 20 x0.15 = 120 m2

There is approximately 0.64m2 to the tonne of sand so

120/0.64 = 187 tonnes of sand…

If you wanted 3inches (approx 7.5 cm) then 93 tonnes would be about right
 
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