Hi Mat, I'm a structural engineer at Brazil. It's great to see this kind of videos even though the Design doesn't follow the same parameters as the Brazilian designing "rules". I wonder what would be the difference between the two types keeping the same load, stress & displacement. Let me know if you want to make this comparison. See ya
Hi Mat, very nice tutorial, informative and simple. Looking forward on your next tutorials. I think i wan to see designing of beams for SMRF, or Base shear computation as per UBC 😊😊😊.
Please make Tutorials for Structural Analysis and Design 🙏🙏🙏 There are hardly any reliable sources on RU-vid for Design. It will be a great help for B.S Civil and M.S Structural Freshers.
Ah! I see you have finally started the real structural tutorial. I was waiting for this moment since you created the channel. Please go through all members. I trust you man.
@@MatPicardal Actually I'm working in Wood. company. Biggest EPC company I believe. I need to re-study the designing of all steucture members. Unfortunately I don't have enough time to go through all the books and lectures again. As I said I trust you and I know you are studying for SE exam so you share the purest lectures. Please keep up the good work Mat.
I am the current fourth year civil engineer in canada. Just want to say thank you for making such informative content. I am currently leaning concrete design. With your infor I find it very helpful in terms of understanding my course content. Thanks!
I really appreciate your videos Mat, it's so helpful for everyone. Thanks and keep doing this videos. Greetings from a Peruvian structural engineering student.
I genuinely appreciate these videos. Had I had this kind of support from my start in my career I probably wouldnt have gotten to the point where I am at... where I am unhappy.
Hi sir mat. This is very generous of you to share your knowledge especially this topic which i am struggling to review and recall. This has been very helpful to me. Thank you so much. Hope you will discuss about beam and slab design on your next upload. God bless and more power.
Amazing content. After seeing this, I know that I've still a long way to go. Hope to see more of these as these as they're really helpful especially for us just starting in the design and construction industry. Thank you for this!
Mat Picardal a video of the desing/analysis of structures made of concrete foundations and steel only multi stories building structure Could be awesome!
I love your videos, it will be really helpful if u can make videos which teach engineers who don't have industrial experience . Make more and more videos like this .
Amazing job! One of our PE/SE will be making free videos that we will be uploading for those who’d like to review for their exams. PS. Your subscribers have great suggestions for topics they’d like to know more. It’s just fascinating to go through them.
Awesome content Mat. Thank you for sharing this with us. If you could do a tutorial on ductile connection design for steel structure in seismic zone, that would be awesome! Keep up the good work chief
Hi Mat, great video. I’m structural engineer from Peru, it would be great if you can make a video about base plates and anchor rods design for metallic structures in high seismic zones. Keep doing this we all appreciate it. Regards
Very good video. Always a pleasure to watching your videos, and it motivates me a lot to learn and work hard. Thank you Sir. Hope to get more tutorials and guidance 😊
Nice spreedsheet Mat. I have read Jack Mohele book and there is a picture with a building destroyed after an earthquake where the specialmoment frame in the perimeter are ok, but all the secondary columns are destroyed. So, it is indeed a very important topic to consider. However, I have always have doubs about this and you may help me, with your practice in California, to clarify them. Imagine you have a low rise building and you decide to do the lateral resistent system with shear walls. Normally I reduce the stiffness of the secondary members in the model to absorb the entire energy of the earthquake with the walls. However, to resiste the gravity loads I provide this secondary columns, and seconday beams. At the end I have secondary frames. Let imagine 3 spans with 5m beams. So my question are: - Is there a minimum for the size of the column? In a special moment frame I consider 300mm and also I check if the anchor lenght for the rebar is enough. But for secondary columns.. is it posible to do to 200mm for example? How do you normally consider this in practice? - Let say that your beam is 5m like i mentioned. Is it appropiate to do the beam continuos or should you design them pinned? Because if you provide top reinforcement it may transfer moment to the column I think. And if you design it pinned, is there a typical way to detail that connection to the column? Keep doing this great videos!! Best regards, Agustin
Hi Agustin, in the US, column sizes are usually governed by Architectural layout and constructibility, and we usually try to push for a minimum of 14 inch column size, but sometimes we go as low as 12 inches. For example - constructibility - contractors in the U.S. prefer to use the same size formwork throughout the project, it's more economical from a construction perspective for the structural engineer to keep re-using the same sizes. So, if we have an 18 inch thick shear wall, we will try to size the columns as 18"x18", even though they may only need to be 16"x16". This helps overall constructability and helps the construction schedule (saves overall project costs). This depends on the contractor and project, but it's common for the projects I've worked on. For detailing, if we want to detail a column to slab connection as fixed, we will fully develop the column longitudinal steel into the slab. For example, if the longitudial reinf were #8 bars, we would use #8 hooked dowels fully developed into the slab. For pinned, we may just use smaller #5 dowel bars for the column/slab connection.
Hey Mat Can you do a series on the preliminary design of a building(i.e. placement of columns and preliminary column and beam sizes etc ), prior to do the analysis in STAAD Pro (and how do the iteration if the acceptable deflection is not met is not met in STAAD)????
Please make a video disecting the analysis and design process of any building based on the latest structural codes and practices. 🙏 Thank you sir for sharing your knowledge.
Good video Mat. Can you please elaborate the way you do the lap splices in the column. Im not familiar with the type of structural drawing shown in the video but I think i saw that the splices were place at the bottom of the column (just above the floor slabs), and according to the ACI they should be locate in the middle of the member.
I believe that's true for special moment frames (lateral force resisting) but I think theres an exception somewhere for gravity columns where it doesn't matter where its spliced
Hi Mat, so I waned to know your input when it comes to multi ties, I work as a rebar detailer in California, and I found many times that the placer prefer the use of them as they only need to place one piece instead of multiple pieces, increasing their productivity, while it's also good for the rebar shop productivity, it does increase a bit the quantities of rebar. but it also reduce the number of Standard hooks to only two 135D. For some reason, sometimes in Special Moment Frames, I haven't got it approved. Thanks for the videos and keep the good work :)
Hi Erick, I've heard those referred to as serpentine ties before, where it's one continually bent hoop. From my experience those are generally approved for gravity columns. But for special moment frames, I'm not sure as I haven't worked on one. Concretr SMF are not often used, at least in my experience.
Hi mat, we need so much stirrups only for moment resistance frame design (column and beam)!right ? If I design shear wall system. I won’t need so much stirrups right ?
Hello thanks for sharing, I've also created a video in my channel about seismic detailing of RC column based from ACI and this video of yours improved some of my knowledge in columns. Thank you so much
Mat you are doing great videos with good content for structural engineering, Can you do a video regarding the following 1. Wind load assignment for a high rise building using FEM 2. About assumptions incorporated with FEM modeling
I currently don't have access to those, but I'd imagine the end goal of column design in most codes is the same (column confinement during displacement compatability), with only a few code portions differing.
Hi sir, First thank you for your effort to make such video tutorials. They are very good and helpful to the kind of me Do you have tutorial on how to design a three type of retaining wall? the cantilever retaining wall and the cantilever retaining with counterfort please?
Hi Mat. This video was insightful. Could you please provide a similar algorithm chart for the design of BEAMS as per ACI code as well? Much appreciated. Keep up the good work.
Hi Mat, I’m from Ecuador. We based our analysis and design in American codes. Do you use a single model to analyze the gravity and seismic system in ETABS? If not, some tips would be useful about using separated analysis. In my country, one single model is generally used which includes all structural elements. RC SMF is the most common system.
It's different from firm to firm and may even differ from project to project. I like to separate the gravity/lateral models for the projects I work on, especially if the buildings are complicated. Combining lateral/gravity into a single model is great if you can get the model working, but sometimes it takes forever to just get the model to work because of complex geometries and meshing, you can end up chasing miscellaneous errors (and wasting firm money) instead of actually engineering. Again, depends on the firm, project complexity, and even software.
In normal special moment frame columns you are able to not the fulfill spacing of s0 outside of the expected plastic hinge location. In this gravity columns you have to fulfill s0 in the whole span of the column? So in general your transverse reinforcement will be higher in the gravity columns than in normal columns?
From what I understand, we need to build a model 1st, using our relevant software,applying our calculated load to it. From this analysis we use the displacement over time as our seismic data input for the seismic anslysis?
Very Impressive. Could you please do another video for Concrete shearwall and share your calc ? I am still confusing about when will I need to use end zone reinforcement and when will I don't need end zone reinforcing. thank you.
Hey mat I was wandering if it would be a good idea to go into structural engineering as i soon need to apply for university. I have all the required subjects and show interest in everything to do with structural engineering but i live in south africa and i dont know if there is a good job market for this career
Sir , is there any innovation that can be done in civil engineering industry . I feel that all these existing roles are like routine works like site engineer checks quality , measurements . Where as structural and transportation engineer has a code book for Everything.
When I find Mpr in the PM interaction diagram (using factored axial force Pu), I do use the unreduced curve in the PM interaction diagram. It's mentioned in the exhibit and video as well. This way, it will maximize the Mpr (if you use the reduced curve, your Mpr will be less - unconservative).
if the school I want to go to doesn’t have structural engineering as a major but it has civil engineering, how should I go about it to become a structural engineer?
Hey Mat, at 10:19 you said both hooks have to be 135 degree ones(which makes sense) but I doubt its practicality, workers on site r gonna have hard time placing such hooks.
True, thats why contractors sometimes request to use "serpentine" hoops where they use a bending machine to create multiple bends in a single continuous bar to make a single hoop for easier installation. These are typically approved by engineers for gravity columns, at least in the west coast of the US.
Hey Mat, which software did you use to prepare that large presentation sheet in which you have those multiple column drawings. i have been looking for something like that for a long time but couldn't find it.
