Anchor Tensile Reinforcement Position
Anchor Tensile Reinforcement Position
(OP)
I have a steel portal frame columns fastened to reinforced concrete piers.
In ACI 318-11, figure RD.5.2.9 show the anchor tensile reinforcement on the outside of the anchor bolts. I have a large base plate on the pier and there isn't much room outside the anchors for additional reinforcement. Can the anchor tensile reinforcement be placed underneath the plate?
Better yet, can I just use the flexural reinforcement at the edges of the pier if it's close enough to the anchor bolts (<0.5 hef)? The stress in the flexural reinforcement will be less than 0.1Fy where it would be used as anchor reinforcement.
In ACI 318-11, figure RD.5.2.9 show the anchor tensile reinforcement on the outside of the anchor bolts. I have a large base plate on the pier and there isn't much room outside the anchors for additional reinforcement. Can the anchor tensile reinforcement be placed underneath the plate?
Better yet, can I just use the flexural reinforcement at the edges of the pier if it's close enough to the anchor bolts (<0.5 hef)? The stress in the flexural reinforcement will be less than 0.1Fy where it would be used as anchor reinforcement.






RE: Anchor Tensile Reinforcement Position
I like to debate structural engineering theory -- a lot. If I challenge you on something, know that I'm doing so because I respect your opinion enough to either change it or adopt it.
RE: Anchor Tensile Reinforcement Position
RE: Anchor Tensile Reinforcement Position
I would say so. I don't even do a 90 degree hook most times as I don't care for the congestion that often results. And, when there is congestion, I suspect that they just cut the hooks off half the time anyhow.
I think that part of the difficulty is that, although we use it for big stuff, the ACI anchorage provisions were really developed with small scale stuff in mind (embeds etc). If you don't already have the Widianto paper on this, I highly recommend it.
I like to debate structural engineering theory -- a lot. If I challenge you on something, know that I'm doing so because I respect your opinion enough to either change it or adopt it.
RE: Anchor Tensile Reinforcement Position
RE: Anchor Tensile Reinforcement Position
I like to debate structural engineering theory -- a lot. If I challenge you on something, know that I'm doing so because I respect your opinion enough to either change it or adopt it.