In diagonal shear crack.. when this happens.. the stirrups were being engaged so you still have shear capacity by Vc + Vs.. Is it not torsion cracks are similar where after it occurs.. torsion is resisted by the stirrups? But in ACI 318 there is this passage "At torsional cracking, however, a...
sometimes you are told to put lean concrete (without aggregate) below foundation if the rock below is not level. But won't the lean concrete itself settle causing settlement problem? How many inch does a 4 inch thick lean concrete base settle?
To those designing 2 to 3 storey building with stiff soil profile.. I heard they are in resonance.. do you notice this too and what is your experience on it? Any quick formulas to check the resonance values of the stiff soil and storey height? Geotechnical engineers usually just give you the...
"Tuff (from the Italian tufo), also known as volcanic tuff, is a type of rock made of volcanic ash ejected from a vent during a volcanic eruption. Following ejection and deposition, the ash is compacted into a solid rock in a process called consolidation. "
You can't dig into Tuff rock with...
Please see attached image. In airports and open hallways and malls.. you can often see long big secondary beam ends framing into girders. I'm concerned about the details of the anchorage and hooks. This is not often mentioned in structural books. Do you make the hook detail at the edge of the...
I need reference for the moments and reactions if the connections are all fixed instead of pinned (see attached image)https://files.engineering.com/getfile.aspx?folder=388749de-ad06-42dd-a11e-b93fb84d5e6b&file=gRkGLM.jpg
Many structural textbooks such as Mcgregor's don't even have topics or words regarding "Deflection Compatibility".. what are other wordings or descriptions for it? Does it mean the strains of connecting elements have to be similar? Can you give example of elements with Deflection Incompability...
If a heavy objects fall down directly at center of a beam. What is the formula to determine if the beam would crack (and nature) given the weight of the object and the size of the beam and other properties like concrete strength, reinforcement ratio, etc?
I'm manually verifying etabs by manual computations.. so far the gravity dead loads, live loads, moments and shear diagrams and others checked out.
I also tried the probable moments strength. I verified it tallied with the formula of Mpr. However when I tried a cantiveler about 2.1 meters...
In beams in between columns, you use Moment (left) + Moment (right) / Length to get the Vu.. but in case of cantilever where there is only one side fixed at the column.. what formula should be used?
If it is still Moment (left) + Moment (right) / Length, how could it work when one side of the...
