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Tie beams help with differential settlements.
You have to worry less about your superstructure for a differential settlement situation if you have tie beams provided . May be that is why the Client Engineer is insisting that you provide the tie beams.
Assalamualaikum SE Pakistan
in this pca seismic guide detailing it says that the rebar hook shall be bends towards to the center of column but i always see the bend is towards to the outer of column, which one is right? and why?
all the best
Thank you sir
Now I understood, Actually my doubt is that, if there is no load in between the footing and the structure is small and soil have sufficient bearing capacity, then why we we are design the tie beam too??
In all references, if the actual bearing pressure is nearer to the safe bearing capacity then there will be a chances of settlement, to avoid this settlement we can use some geotechnical method and we can design the suitable tie beam.
As per this reference book, the sliding against footing and settlement calculation both are safe, but still client saying that to design the tie beam cause the sliding check is fail. That's why am trying to prove this calculation is correct or not.
As far as your calculation goes, you can reference this manual in your calculations and that should be okay.
I am not sure what do you mean when you say "Please suggest me some solution for this. " Haven't you already done calculation? Do you want me to check it and confirm if that is okay? If that's the case, I won't be able to check the calc because of my own workload. But as long as you are using literature references, it good. Double check your numbers and nothing to worry about.
What I want to understand is that why are you worried about settlement? Does your structure contain any equipment for which you need to keep settlement below certain value so connections to equipment don't break? Also, I am not sure where this structure will be built - is there any frost heave expected where this structure is being built? If yes, have you designed for that?