Curb Layout
Curb Layout
(OP)
Hey, gang. can anyone point me to guidelines on laying out plain conc. curb in a manner that won't cause cracking - i'm designing sidewalk bumpouts/planters and i'm trying to avoid sharp corners. in some areas though, it's difficult to round everything. i know the guideline is to provide a min. 4" thickness to avoid cracking, but beyond that i'm at a bit of a loss. i'd like to avoid adding reinforcement if possible. btw, this is in pa. i didn't see anything in the penndot standards, but perhaps i overlooked it.
thx.
thx.





RE: Curb Layout
Cracking can be controlled by using contraction joints spaced about 15 feet apart and at the beginning and ends of curves. You will also need to put in expansion joints about every 50 feet and where the curb abuts sidewalks or other site features. You should probably also use 6" thick curbs.
For some good information on different types of curbing, you can google FDOT Design Standards and look at Florida DOT curbs. It is a big file, but there is a lot of good information in it. I am surprised that PDOT does not have a similar book of design standard details.
RE: Curb Layout
thx.
RE: Curb Layout