Source: NEHRP Recommended Seismic Provisions for New Buildings and Other Structures (FEMA P-2082-1) 2020 Edition - Figure C12.3-6
Hi, I've been learning on how to check on redundancy properly and came across this helpful flowchart from NEHRP. I have 2 questions though.
1. As far as I know, ASCE...
Hi, I was developing a method to easily check for redundancy factor in my structure. I need some advice or input or correction if any of my understanding are wrong, and if I can use this method to check for redundancy. Thanks
"Loss of moment resistance at the beam-to-column connections at both...
Hi, can someone please help me to understand what is B/C major and minor in ETABS
I have a column that has 0.794 ratio in major and O/S in minor.
1. What does the number 0,794 represent? I know that Mc/Mb should be 1.2 in SMRF, so does that mean that my B/C, maj is okay because it is less than...
Hello guys, I was wondering about the removal of formwork and shoring. I look up on ACI 318:2019 and they only mention to look it up on ACI 347, and so I did and found this (image above)
Does this mean that if I have a beam with a 7 m span where live load > dead load, then the formwork and...
hi everyone, I was working on a job in which there are 2 types of building that is going to be held by one column. They both were adjacent to each other and were connected structurally.
So, as you can see, both of the building have different slab elevation. My question is:
1. I modelled the...
Hi everyone, I got a job with a plan like this
Basically there are 2 types of building, with width 5m and width 7 m. Please correct me if I did something wrong with my step of designing.
1. First I separately make 2 ETABS model, each for width 5m and 7m. And make sure my design is proper
2...
Hi everyone, so I met this person who wants to consult to me about something.
As a structural engineering, I have no idea what kind of "structural" check needed to be done in this sinker pipe lines. It was obviously placed underground, and no structural components were holding it. If it was...
Hi, I found this image on google and was wondering if anybody can provide me with some example of the calculation or a book/journal that can explain it. How was he able to come up with that thickness and numbers of bolts, etc.
HoHow do you design this type of connection?
A calculation sample...
Hi everyone,
So I was having this problem with a canopy design. The overall design has been checked, I use a 250/450 cantilever concrete beam for a span on 1650 mm and use a 200/800 beam to conceal the beam behind it for aesthetic purposes. The architect wanted to put a canopy there, just...
Hi I was wondering, do you need to include the seismic analysis for a single story building, for example like a single story house, a minimarket, and IDK how MCDonald's building looks like in your country, but in mine mostly it was a one story building, including other drive-thru available food...
Hi, I was recently curious about beam-column joint on a steel, especially WF profile. I realize than when designing a moment joint you can refer to AISC 358 as you can see in the image below.
The company I worked in has this sort of beam-column joint detail for every profile there is
The...
This is an example by Seismic Design Handbook by Farzad Naeim in Chapter 10.
I was confused by this sentences, quote "interaction between frame and wall under lateral loads results in the frame "supporting" the wall at the top, while at the base most of the horizontal shear is resisted by the...
Hi, I'm a fresh graduate in structural engineering. I realize that there are so many, way to many things to learn... I encounter some problem while learing stuff, such as:
1. What is two stage analysis, how do I use it, when do I use it (is it supposed when I had a basement?), I try to find...
I was wondering for example I was modelling a 4 stories building in ETABS, why most people on youtube didn't design or model the tie beam/sloof in ETABS? My real question is, do you need to take account of the weight of the tie beam in determining the effective seismic weight for eartquake...
Hi I was doing a structure analysis on a castelated beam pipe bridge. I was wondering can I use a simple pile cap analysis for the abutment and a simple pile analysis for the strauss pile reinforcement? By being simple, what I mean is to calculate it based on the dead and live load and not...
Hello
I was modelling a pile to pile cap connection with a stirups of D4-120.
Later on, I try to decrease the spacing of the stirrups to D4-30.
What I get was, the stress that occur in the stirrups increased.
I would argue that, by using the lateral confining pressure formula, we know that low...
I was tring to do a FEA static general analysis using ABAQUS on pile to pile cap retrofitted by steel jacket. I did the experiment test earlier and get the results (the blue line). When I was tryng to model it, I use hard contact with both tangential and normal behavior on my model (The red...
