Viv Posted October 21, 2005 Share Posted October 21, 2005 Is there a formula for working out how many tonnes of gravel I need?Eg length x width x depth = ? tonnes. Link to comment Share on other sites More sharing options...
Mpprh Posted October 21, 2005 Share Posted October 21, 2005 Himy experience has always been that you need about three times more than you originally thought.1 ton of gravel goes nowhere !Peter Link to comment Share on other sites More sharing options...
Alan Zoff Posted October 21, 2005 Share Posted October 21, 2005 Rule of thumb appears to be for each 25-30 square metres you will need 1 ton of gravel for each inch of depth. (Sorry for mixing metric and imperial but this was how it was given to me.)So if area is 10 metres by 6 metres (60 square metres) and you want a 3 inch depth of gravel, you would need between 6 and 7 tons of gravel. I think.... Link to comment Share on other sites More sharing options...
Russethouse Posted October 21, 2005 Share Posted October 21, 2005 When I needed to know the same thing fairly recently I 'googled' something like 'calculate quantity of gravel' and had several sites come up......worked out OK. Link to comment Share on other sites More sharing options...
Nick Trollope Posted October 21, 2005 Share Posted October 21, 2005 [quote]Is there a formula for working out how many tonnes of gravel I need? Eg length x width x depth = ? tonnes.[/quote]More maths!!If (say) you want to cover an area of 10M x 10M to a depth of 10cm, then you need 10 x 10 x .1 = 10 cubic metres which is how you buy it in the gravel shop! Link to comment Share on other sites More sharing options...
vicandphil Posted October 21, 2005 Share Posted October 21, 2005 Looking at previous replies I would like to add that the best way to arrive at how much you require is to work out the area.....width x length , in square metres and then multiply that by the depth of coverage. With gravel it is best not to go too deep as it will end up like chesil beach !I would normally give a covering of no more than 25 mm for a drive and even less for a path - depending on the size of the gravel which can and does vary a lot ! ( yes I am a landscape gardener/groundworker/builder)Before spreading gravel you should make sure that your sub base is as level and as flat as you can make it - ideally with a weed membrane fitted to stop weeds pushing up through your nice gravel finish. Do not spead gravel onto plain dirt as it will just dissapear in time leaving a mass of weeds Hope this helps Link to comment Share on other sites More sharing options...
Caterham7 Posted October 21, 2005 Share Posted October 21, 2005 Density of gravel does vary quite a bit, generally in the range 1.7 to 1.9 tonnes per cubic metre.Regards Tony Link to comment Share on other sites More sharing options...
Caterham7 Posted October 21, 2005 Share Posted October 21, 2005 Density of gravel does vary quite a bit,generally in the range 1.7 to 1.9 tonnes per cubic metre.ie length x bredth x depth x 1.8 = approx no of tonnes reqdRegards Tony Link to comment Share on other sites More sharing options...
Caterham7 Posted October 21, 2005 Share Posted October 21, 2005 But don't press the button three times or you'll order three times what you need Link to comment Share on other sites More sharing options...
Viv Posted October 21, 2005 Author Share Posted October 21, 2005 Thanks for all the helpI am going for a depth of about 5cm because the path is quite wide. Rough calculation is that we will need 70 metres x 1.5 metres x 5cm deep , so we hopefully will now be able to work out fairly accurate amount to have delivered. Link to comment Share on other sites More sharing options...
Miki Posted October 21, 2005 Share Posted October 21, 2005 viva,If it is a fairly large amount I just tell them the size and depth at the Carriere and they deliver. Same thing I guess though, if I want to pick it up in the trailer. Link to comment Share on other sites More sharing options...
Nick Trollope Posted October 21, 2005 Share Posted October 21, 2005 Does anyone else see 1 of Caterham's posts after Miki's - ie. not in chronological order?Wierd - & happens allthe time, to me....Edit - wierder - now his post appears after mine.I'm going to bed. my head hurts. Link to comment Share on other sites More sharing options...
Battypuss Posted October 21, 2005 Share Posted October 21, 2005 From backbreaking experience I would suggest that you pour wine into glasses on the right hand and leave spades on the left. It may not work, but if you don't drink it, others will. Then YOU drink the wine and persuade some other person to shift the gravel. Believe me (and anyone else who has been there and done it and has the Tshirt), spreading gravel will have you on your knees in no time. The more you spread, the less it looks... Link to comment Share on other sites More sharing options...
Will Posted October 22, 2005 Share Posted October 22, 2005 [quote]Does anyone else see 1 of Caterham's posts after Miki's - ie. not in chronological order? Wierd - & happens allthe time, to me.... Edit - wierder - now his post appears after mine. I'm going to...[/quote]If you get a server error message when you post, e.g. a timeout or similar, and then go back and re-post, you will often find that one of the posts gets stuck at the end of the topic and all you can do is go in to the 'edit' option and delete the post.I'm not saying that is what happened here, but it often works like that.I'd agree that one inch (2.5cm) is quite deep enough for gravel under normal circumstances. It doesn't sound a lot, but any deeper and it gets very difficult for anything like wheelbarrows, bikes etc. Link to comment Share on other sites More sharing options...
Caterham7 Posted October 22, 2005 Share Posted October 22, 2005 Thanks for that tip Will,message deleted,it was due to a time out error.Cheers Tony Link to comment Share on other sites More sharing options...
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