"Ken Moiarty" wrote in message
news:v%kre.1667366$8l.1605819@pd7tw1no...
I'm trying to decide whether to go with inexpensive pressure-treated
evergreen wood decking or low cost 1" thick (approx.), radius edge, cedar
(which is must less expensive than standard patio grade cedar decking). I
kind of prefer the cedar option, but I'm unsure about whether it's wise to
go with cedar that is only half the thickness (hence, half the strength)

Actually it has much less than half the bending strength. Resistance to
bending is proportional to the cube of the depth.
So, if the normal stuff is 1.5 inches (which is what a 2 by ... measures)
then 1 inch would be about 30% of that stiffness.
Take a few pieces in the yard and lay them out at the joist spacing you
want. Stand on them. See if you like it.
Personally I think 1" is too thin.

-j