How much sand?

imamosher

imamosher

imamosher

Permabanned
Joined
16 Feb 2010
Posts
431
Location
Hythe South East
Im in the process of trying to measure my patio and am struggling with the amount of sand I need

The dimensions for the area are 25m squared and we need 25mm of sand across the area how much sand do I need?

I have no idea how to work this out.
 
25m x 25m x 25mm?

(25 metres) * (25 metres) * (25 mm) = 15.62500 m3

That's a guess. Sorry if you buy so much sand, you have no patio space left. Or it's several meters taller than you.
 
Last edited:
tres said:
25m x 25m x 25mm?

(25 metres) * (25 metres) * (25 mm) = 15.62500 m3
Click to expand...

This is technically correct, but i find it's better to do it swifty's way and just buy a few bags then you can make a good estimate of how many more you'll need once you've used them up.
 
a good bulk bag 1 tonne will go a long way and work out cheaper than small bags in the long run....bulk bag around £32ish-£40 depending on merchants
 
Buy in bulk, get it delivered. The bags themselves actually cost about 1/3 of the price you pay for a ton of sand! (the bags used to carry half ton)

It will be about £30-40 depending on what type of sand you get.

Whatever you do don't go buying these rip off 20 kilo bags.

You'll need a couple or so tons of the stuff I think.
 
tres said:
@1602kg per m3

25 tons of the stuff??!
Click to expand...

I thought that as well, a patio that measures 25m x 25m is probably bigger than most back gardens.

I think it's actually 25sq. m x 25mm = 0.625 cu. m, which equals approx 1 tonne of loose sand. However it will probably need to be packed down, so maybe a little more.
 
Tomsk said:
I thought that as well, a patio that measures 25m x 25m is probably bigger than most back gardens.

I think it's actually 25sq. m x 25mm = 0.625 cu. m, which equals approx 1 tonne of loose sand. However it will probably need to be packed down, so maybe a little more.
Click to expand...



So as far as I can tell this seems to be correct however I now need to work out the cement ratio. Which is 1:5 no idea how much cement that means I need?

much appreciate the input
 
I just re-laied my patio at home but had to put down a solid sub base first and then morter the slabs in place.

In the end i used 3000 kg of hardcore MoT 1 for the sub base at a depth of approx 50mm. I used around 2000kg of sand and 200kg of cement for the morter at a depth of approx 25mm.

Area was approx 30 sq m.

Ordered in bulk from Wickes who did 860kg bags for £38-42 + £30 delivery.

This site has a pretty good explanation of how to calculate quantities needed etc. http://www.pavingexpert.com/layflag1.htm
 
Last edited:
You must log in or register to reply here.
Back
Top Bottom