By the way all the buildings designed by our company needs to withstand magnitude 7.3 earthquake bec most buidings are within 10 kilometers of such faults. How would beams with restrained shrinkage cracks behave? Still please tell me what would happen for cracks occuring between stirrups. Its...
In the original or first message. I gave the beam measurement "The beam is 12 inches wide and 20 inches deep with closed stirrups distanced 4 inches apart"
If the cracks are inclined and steep to be shear cracks..how would the inclined restrained cracks behaved (see my illustrations two...
I really know about beams and shear. Our company always use D/4 or less so all beams ever designed have closed stirrups. We also put inner stirrups if there are internal longitudinal bars. In fact, we have file photo of it. I didn't design it but our company. We only put side longitudinal bars...
Since the drying shrikage cracks were inclined.. then it's like it imitated shear crack (more steep) so for all intent and purpose it can be considered as semi shear cracks.
Anyway. What would occur if steep cracks occur between two stirrups towards the beam ends (not at midspan). How would it...
I have read many of most popular textbooks and the ACI code and familiar with them.
Just want to hear your experiences. Most of my colleagues always oversize beams such that no crack would form (they put stirrups only as code requirements). So I want to hear from those who use Vs (some of my...
Can any pattern or form of restrained shrinkage crack jeopardize aggregate interlock? Imagine the shrinkage crack occurring diagonally. Can this occur such that the stirrups would be further stressed because the diagonal shrinkage crack was able to disengage aggregate interlock?
I know. If the width is increased by say 2 inches or 4 inches. It may not exceed Vc.
So the question is. When you design beam, do you make it such that at service loads it won't exceed Vc? That is. You make the width wider? And yet still added stirrups. Or do you design your service loads to...
Vc exceeded. Are you not supposed to exceed Vc when its Vc + Vs for total shear capacity?
This is what is meant by 3 leg atirrup hookie.
Serviceability means?
It has only top and bottom longitudinal rebars size 0.8 inch diameter. No middle rebars. But there is tight 3 leg close stirrups inside. No overloading conditions. It's just that in many buildings and malls. I have never seen such hairline cracks. Have you or anyone seen such hairline cracks...
Have you seen anything like this yet? Is this indication of torsion or shear cracks and what should be the remedial actions? The beam is 12 inches wide and 20 inches deep with closed stirrups distanced 4 inches apart. And the location of it is in the following (shown in red):
This is zoom...
