Attached is the SDD for our 12' -6" temp conc barrier. While we've had this standard for awhile, we were also phasing out our former 10'-0" barrier, so our experience is relatively recent.
The primary feedback we've gotten is that the new barrier is much more susceptible to breaking/spalling along the edges.
I received another phone call today that after only 2 or 3 uses they are seeing 10 -20% of the barriers showing these problems; whereas, with our 10 ft barrier they'd typically get 10 " 15 uses before seeing this kind of damage. So, they are asking if vendors can add a ¾-in chamfer to:
You'll see we allow ¾-in chamfer on the bottom edge on the ends now.
We have no issues with allowing the ¾" chamfer you are requesting on the front and back bottom edges and the vertical edges on the ends. Florida has been using similar chamfers for some time now to reduce that kind of damage.
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