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 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...
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
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 have an existing masonry building and the cliente wants a second floor, I have this case where the new wall its going to be above the existing slab and I want to know how can I reinforce the slab so there wont be problem transfering the new loads, thanks in advance.
Hi Guys, the torsion diagram that the ETABS shows its simply the the moments transfered by the slabs to the beam? I have a concrete beam between two slabs and I want check if the program is taking the correct decisions because it shows O/S #45.
The beam have one 4mx5.5m slab at one side and a...
Hi guys, I have a question, the chapter 20 of ACI 318 says that you need to provide an 3inch cover for
concrete elements that are going to be against soil, like foundations, but this also should apply to the part of columns
and pedestal that its below surface level?
Hi guys, I have the following job, There's an existing structure and the client wants to add a new one to complete the second floor area and I have a question:
How would you join both structures into one?
I was thinking about anchoring dowels into the existing slab (with epoxy resin) and into de...
Hi, I have this connection and I would like to know how to analyze it to check the diameters of the bars necessary to obtain a right behaviour of the structure.
Thanks in advance.
Hi, guys. I have the following question, a friend of mine wants to demolish one span of a two span existing concrete slab system so he can do it again. I was wondering if I can re-use the steel bars of the demolished slab because in the demolishing process the steel bars may be affected and gain...
