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Hi guys, hope you are okay, I have this Situation, the ACI 318 indicates a equation in chapter 25 to calculate development Length (ld). There's a factor that's used to account the effects of casting position when there's more than 12in of concrete below the bars, this factor is 1.3. This...

Hi guys, I have been checking ACI 318-19 and I noticed that ldh in chapter 25 has changed from previous code Versions. Neverthless, ldh in chapter 18 that it's derived from the one in section 25, has not been updated so the equation in chapter 18 isn't valid

Hi guys, I have differents models that I want to merge, so someone told me there's this option in etabs that goes by "Merge Analysis Results", but i dont find any information about how to properly use it, do you guys know anything?

Hi, yes, thats how I think it should be done but the ACI doesnt explicitly says that we should do it like that, I dont know if there's some section within ACI-318 that says it.

Hi, something like this

Hi everyone, I have this doubt, when we are detailing a Beam-Column Joint at roof level in a SMF, whats the proper way to do it? The literature that I have read, doesnt show this kind of case and the ACI doesnt explicitly tells you how to do it. The longitudinal top reinforcement of the beam...

My bad, I didn't explain myself clearly, I'm using Etabs to construct a M3 for a moment frame, the value of scale factor that the use for point C is 1.27, at first I Thought it should be 1.10 like you said, but I dont know why they use that other value

Allright! what would it be the case for W Shape, ASTM A992?

Hi, I'm trying to construct the force-deformation curve described in ASCE 41-17 in order to do a pushover analysis, but I'm finding trouble trying to understand how to calculate point C in the graph, could tell whats the correct approach?

Hi guys, I have a question, when designing AND analyzing elements in Etabs we use stiffness Modifiers to model a cracked section, should we do the same while designing floor slabs in SAFE? Thks in Advance

is it ok to take the Moment and divide it by the diameter of the thin wall cylinder and assume that a half o the cilynder is in compression and the other half in tension by dividing that couple force by one half of the perimeter of the circle?

Hi guys, I hope you are okay, I have a question, Im designing a steel tank per AWWA, there is an equation to calculate de compression stress in the shell, they are using the overturning moment and the seismic vertical component, but I wonder why in the portion corresponding to the overturning...

Hi guys, I hope everyone is ok, I have this question, I been looking for a max horizontal spacing between flexural reinforcement, is there any limitation for that? I have a beam with a 40cm width and the contractor want to use two #8 bars instead of three #6 bars due to availability but I'm not...

Hi guys, I have this problem I'm trying to calculate the joint shear of a structure in ETABS 2019, but when I assign the longitudinal reinforcement to the beam the program shows NC (Not Calculated) in almost every joint, if I left the program to use the reinforcement required by analysis it...

Hi guys, I have a buried concrete tank that has to be capable of resisting the load transfered by a truck that could run over the top slab. I want to know what's the proper way to account the wheel reaction of the truck on the slab. The top level of the slab is the same as the road level...

Hi guys, I have the following question, when we are evaluating Seismic effects on earth pressure we calculate a KAE, but I have the doubt that if a different coefficient than Ka must be use to calculate the pressure due to surcharge in this sceneario?

Hi guys, I have a question about the distance marked in the picture attached to this post, do exist a minimum distance? I have a 5cm "seat" to support the HC slab before the second phase pouring of the beam and I want to know if I have to shore the slab or the 5cm is enough. What do you think?

Hi guys, I'm looking for an app (web based) where I can load every cronogram of the projects I'm workin., Every cronogram has a series of taks, a start and end date and a person who's responsible of fulfilling the task. I want to be able to filter this global cronogram by project or by people...

Hi guys, I want you to tell me your experience using the software Scia Engineer, whats different between this software and the autodesk software.

Yes, thats the case in that location where the new wall its going to be there isn't any negative flexural reinforcement.