Sorry, I forgot to mention I was referring to the overturning moment that will be carried by the shearwall. Since most of the lasteral load was carried by the wall, I noticed that the overturning moment produced by the lateral load is significantly larger than the resisting moment, so the wall...
What is the common foundation of a concrete shearwall in a low-rise concrete structure with a bearing wall system? Since most of the lateral load will be resisted by the shearwall, I've noticed that a shallow foundation (wall footing) is not enough, thus requiring a deep foundation. Am I right?
Hello, we are considering adding an additional floor level to an existing building. We are planning to design the new retrofitted structure as a bearing wall system and add shear walls to carry the lateral forces. My question is, how will we consider the existing columns in the model and carry...
Yeah. Sorry. This is my first time to post gain here in the website. I forgot about the forum categories here.
Anyway, thank you very much. I'll try to read the book of Chopra.
Anyone know a good reference book for the vertical and horizontal distribution of seismic loads for structural frames that includes the computation of relative stiffness, center of mass and center of rigidity? Thank you.
Anyone know a good reference book for the vertical and horizontal distribution of seismic loads for structural frames that includes the computation of relative stiffness, center of mass and center of rigidity? Thank you.
JAE, I'm using IBC.
Okiryu, thanks for the reference.
wannabeSE, that's the point of my question. In the soil report usually it says you may increase the bearing pressure. But in the IBC code, only the alternative basic load combination is stated to increase. Are the geotechnical engineers...
Does the increase of 33% on allowable bearing capacity is applicable for both Basic and Alternative ASD Load Combination?
I remember this increase of allowable stress is only applicable to alternative load combination. For soil capacity, it is allowed for both?
Okiryu
After reading the Foundation Analysis and Design of Bowles, I think I got your point. For large footings, allowable bearing capacity is governed by settlement and not by the shear failure, am I right? But I still have questions in mind.
Anyway, thanks for your response.
I am planning...
Okiryu
So if that is the case, how would you know if the size of the footing is adequate when you are using subgrade modulus. Especially when you are designing a small mat footing acting like semi flexible semi rigid foundation.
This kind of footing is quite challenging if you analyze it with...
I am new to flexible foundation analysis.
My question is when using the subgrade modulus, the pressure gives by the SAFE would be compared to the net/effective bearing pressure provided in the soil report in determining the footing size? or you have to divide it with safety factor?
I'm...
I just noticed that the footing thickness required for length development for hook in tension is sometimes so much higher than the required thickness based from punching shear.
Is this really reasonable?
PCA Notes example problem shows that we need to consider length development in tension...
