"Walter R." wrote in message
...
The patio is 11x40'. It has some small cracks in them that have served as
"control joints". To avoid further cracks, I thought it might be wise to
cut a few more control joints where it can break with ease. The whole
patio will be covered with a layer of split paver bricks, laid over heave
roofing felt.

--
Walter

Walter,
Why cut it if you're covering it? Control joints are basically cosmetic. The
concrete's going to crack anyway. The saw cut just controls where. If you do
cut it, don't go over 150 sf per section and also don't have a section more
than 1 1/2 times longer than it's width. Real good chance of cracking
between cuts if too long.

Tim