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Posted: Sun Feb 19, 2012 5:07 pm
by Forestboy1978
Laying an indian sandstone patio on Tuesday. Approx 40m2. I was going to aim for a crossfall gradient of about 1/60 which over the length of the patio from the house outwards is approx 11.6cm.

Was just wondering how strict I have to be with is. I have several holes in the patio where raised planters will be positioned etc etc. If I put in a slight end fall towards the planters can I get away with reducing the crossfall or would this be too risky.

Posted: Sun Feb 19, 2012 6:34 pm
by lutonlagerlout
is it riven stone?
anything less than 1:60 with riven you risk ponding
LLL

Posted: Sun Feb 19, 2012 8:47 pm
by Forestboy1978
yeah it's riven. Guess I'm at 1 in 60 then!