Concrete Pryout Strength of anchors in Shear
Concrete Pryout Strength of anchors in Shear
(OP)
Hello,
I'm designing the anchors from a pre-manufactured metal building that is going to be supported on 27x27 columns. I'm having problems with the concrete pryout strength in shear. According to what I understand from the code, Anchor reinforcement would only help concrete breakout, but not pryout. Is there anything (more reinforcement) that we can do to avoid this failure without changing my column dimensions?
Thanks
I'm designing the anchors from a pre-manufactured metal building that is going to be supported on 27x27 columns. I'm having problems with the concrete pryout strength in shear. According to what I understand from the code, Anchor reinforcement would only help concrete breakout, but not pryout. Is there anything (more reinforcement) that we can do to avoid this failure without changing my column dimensions?
Thanks






RE: Concrete Pryout Strength of anchors in Shear
RE: Concrete Pryout Strength of anchors in Shear
I always felt that I was gaming the system, but I had to do something to make the numbers come out.
RE: Concrete Pryout Strength of anchors in Shear
The authors of the attach paper say it is reasonable to assume pryout failure can be ignored if the minimum embedment is greater than 12 x diameter.
EIT
www.HowToEngineer.com
RE: Concrete Pryout Strength of anchors in Shear
RE: Concrete Pryout Strength of anchors in Shear
RE: Concrete Pryout Strength of anchors in Shear
RE: Concrete Pryout Strength of anchors in Shear
If so, I would use all-thread rods and lap them with vertical column reinforcement in the column to get full development, and avoid APP D all together.
RE: Concrete Pryout Strength of anchors in Shear
You need to use supplement reinceforcement... When you use it you dont need to worry about pryout or breakout in shear, because the anchor bolt and rebar lap each other (need longer anchor) and work as one, so pryout or breakout dont happen.
Review PIP STE05121 Anchor Bolt Design Guide, you will find there how design this supplement reinceforcement.
Regards
RE: Concrete Pryout Strength of anchors in Shear