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Posted: Sun Aug 10, 2014 1:13 pm
by Drivgravel
Hi
I am thinking of using some of my front garden lawn for additional occasional car parking, using cellular paving with decorative gravel.
The area would be roughly 16ft by 16ft, on a slope.
(1) Can Cellular paving be used on slopes, if so what maximum gradient.
(2) What's the best way and easiest way of working out the gradient.
Thanks.
Posted: Mon Aug 11, 2014 10:12 pm
by Drivgravel
Hi Is the above not possible?
Posted: Tue Aug 12, 2014 6:55 am
by Mikey_C
a quick look on one of the paving grid manufacturers websites (see here ) says they work on a gradient of up to 5%.
what slope do you have?
when you say working out the gradient, do you mean the best method to remove it? (i.e. dig it out) or the best method to measure the height at two points and the distance between them.
Posted: Tue Aug 12, 2014 7:11 am
by Drivgravel
Mikey_C wrote:when you say working out the gradient, do you mean the best method to remove it? (i.e. dig it out) or the best method to measure the height at two points and the distance between them.
Thanks for the response, I want to know the best method of measuring the slope. 
Posted: Wed Aug 13, 2014 9:36 pm
by Drivgravel
Would appreciate knowing the best method for measuring the gradient, so I can whether cellular grid would work.
Thanks.
Posted: Wed Aug 13, 2014 9:48 pm
by Noony
basically measure the distance you plan on covering, and how much fall is over that distance.
A 1 in 20 equates to a 1 meter fall over a 20m run, which equates to a 5% gradient
if that makes sense?
Posted: Sun Sep 07, 2014 6:08 pm
by Drivgravel
Have finally found the time to measure the site. using the longest piece of wood I could find 64cm, and have come up with the following
1st 64 cm run The fall is 9cm
2nd 64 cm run The fall is 14cm
3rd 64 cm run The fall is 17cm
4th 64cm run The fall is 12.5cm
5th 64cm run The fall is 15cm
6th 64cm run The fall is 19cm
So over the total run of 384cm the fall total is 86.5cm making an average gradient of 22% across the whole, therefore 1 in 4.5
If I have got my calculations wrong, please let me know. Also is there anything else I need to take in to consideration.?
Posted: Sun Sep 07, 2014 8:56 pm
by lutonlagerlout
thats way too steep fro cellular gravel then
sorry
LLL
Posted: Mon Sep 08, 2014 12:00 am
by Drivgravel
lutonlagerlout wrote:thats way too steep fro cellular gravel then
sorry
LLL
That's a shame:(, what are the alternatives.
Having a look herehere seems that they can be used on steeper slopes than 5% but by how much they don't say, so will contact them.
Posted: Sat Sep 13, 2014 9:54 am
by Drivgravel
Had a response back from one of the grid manufacturers who state their grids can be used on slopes up to 5% with gravel. But would like to know of any other permeable alternatives for my site.
Posted: Sat Sep 13, 2014 11:39 pm
by lutonlagerlout
permeable block paving but why bother?
the rain will run off
normal CBP with drainage will work
LLL