Anchor rods in pedestal, cracked or uncracked concrete?
Anchor rods in pedestal, cracked or uncracked concrete?
(OP)
When using ACI318 App D for assessing the shear capacity of anchor rods in a pedestal can the concrete be assumed to be uncracked? i.e. ψc,v=1.4 (Clause D.6.2.7)
Clause 7.10.5.6 and R7.10.5.6 seems to suggest that cracking could occur in which case ψc,v=1.0 ?
Can someone give me examples of the reinforcement required for the three cases for cracked concrete given in D.6.2.7 ?
Clause 7.10.5.6 and R7.10.5.6 seems to suggest that cracking could occur in which case ψc,v=1.0 ?
Can someone give me examples of the reinforcement required for the three cases for cracked concrete given in D.6.2.7 ?





RE: Anchor rods in pedestal, cracked or uncracked concrete?
Admittedly I am not a frequent user of ACI-318 however for the example that you described I would be inclined to go with the cracked concrete value of ψc,v=1.0. Unless you have a No.4 tie which is preventing the breakout of the anchor in which case increasing the breakout strength of the anchor by 20% (ψc,v=1.2).
I am visualizing your pedestal as a raised concrete plinth supporting a column which is subject to small/moderate shear and pull-out forces.
RE: Anchor rods in pedestal, cracked or uncracked concrete?
RE: Anchor rods in pedestal, cracked or uncracked concrete?
Dik