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Quick Question Engineering
United States
เข้าร่วมเมื่อ 24 ต.ค. 2020
Have you ever said, I've got a "quick question" for you? Well, I have too. I'm a civil structural engineer (PE) in the United States, and I created this channel to answer technical, cultural and immigration questions related to engineering. I started learning English in the US in 2014 and studied half of my degree in Brazil and half in the United States. I hope my diverse background paired with your quick questions help us generate some great content!
For a quick or long question, you can reach me at quickquestioneng@gmail.com
*Rômulo de Carvalho Silva, PE is a project engineer working for a corporate company. This video and this channel does not necessarily reflect the opinion nor beliefs of the company and are for entertainment purposes only. All thoughts expressed are purely his own observations and experiences.
For a quick or long question, you can reach me at quickquestioneng@gmail.com
*Rômulo de Carvalho Silva, PE is a project engineer working for a corporate company. This video and this channel does not necessarily reflect the opinion nor beliefs of the company and are for entertainment purposes only. All thoughts expressed are purely his own observations and experiences.
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Thank you for the video. One part was not clear to me. If I want to get PE with a focus on structural engineering, what should I do?
Hi Rômulo. Your videos are really helpful and I hope you can have another example with Directional Procedure for steel industrial building with roof bracings. I tried to get the excel example but I haven't received any email.
Hi @@ricmartins2424! Glad you liked the video and thanks for the suggestion! I’ll add it to my list. Can you send me an email at quickquestioneng@gmail.com? I’ll email it to you. Sometimes these emails go to your spam folder if it’s the first time you receive an email from me.
Yes, I'd like to have the calculation sheet excel files for both Envelope & Directional procedure, thank you for doing this video
Thank you! You can download the examples through this link: rb.gy/08a1b6
Your tutorial is excellent, but it would be better to refer to ACI 318-19
@@biltektek2643 Thank you! I’ll probably refer to 318-19 in future videos. Although I believe all that I mentioned is still the same in 318-19
Excelente video. Suscribed. Can you please explain a little more about simple diaphragm building? I didnt' get it
Hi, sir. Can you help me to pass the SE exam. How did you study.material
Great video! Pass rates seem to be trending up since they changed to exam format.
@@DennisLaceyVlogs That’s great to hear!
Sir I want aci code book pdf
Helpful, thanks
Excellent description!! Thanks
Glad it was helpful!
Awesome video my Friend. I am a steel designer that is stepping into the world of Aluminum. Thank you for your knowledge.
@@kryptoburger9896 you’re welcome! Glad you liked it!
Thanks for sharing your journey with us! Also has NCEES actually made any adjustments in the past exam formats before CBT? I'm skeptical that they actually care about ironing out the kinks in the depth exams. Either way, best of luck and wishing you all the best man!
I don’t think they made made adjustments before, but I also don’t think they ever got this much backlash. I know many individuals who issued complaints and some state boards that did too. I hope that moves the needle. Thanks a lot!
Proud of you man. Thanks for sharing
Thanks man! Appreciate it
MY GOD
G’day buddy, how did you calculate CT=1?
Thanks for sharing.
Does this work also for computer science?
Nice video! Im building a robotic arm with aluminum 7075, the strenght is very important for my application, but the weight of the arm is critical and thus there are little choices for me other than aluminum
After udl pin is present so in BMD at pin moment should be 0 hence b option is correct
Any update on your SE exam journey? Did you take the computer based test this past cycle?
@@rebryant3 I did take the CBT lateral depth in April, but I didn’t pass it. I decided to skip the October cycle and see if NCEES improves the computer based exam next year.
@@QuickQuestionEngineering hopefully they do! A 14% pass rate really indicates a problem with the exam format as it is now
Thanks for the update Rômulo! Michigan is still on ASCE 7-10 so might be a while until I need this haha
@@M0NeYsNiPe thanks for tuning in! Do you know when Michigan will update to ASCE 7-16? Florida pretty much keeps up with the IBC because we’re on a 3-year code cycle. I don’t love having to re-learn codes/provisions all the time, but it’s nice to see how our industry is evolving based on more research and lessons learned from hurricanes and earthquakes for example.
@@QuickQuestionEngineering no word yet, I did see some ballot proposal come up on SEAMi but nothing beyond that
Thank you! Simple and safe method 👍👍
Thanks, glad it was helpful!
So you use the Lambda factor to adjust the Exposure B p30 values for this building being in Exposure C and not 30ft tall?
I have the ASCE 7-22, and there is no section 28.5 and I can't find anything on the simplified design method. Can someone please educate me if ASCE no longer allows the simplified method if the state uses the ASCE 7-22? Also, the wind loads are considerably higher in the 7-22 ASCE Hazard Tool online than in the 7-16. Edit: I did some additional research and yes, 7-22 eliminated the simplified method in chapter 28.
You are correct that 7-22 dropped the simplified methods! I noticed that recently and will be making a video about the updates in 7-22 including this one. Regarding your second comment, I don’t think the wind loads are considerably higher in 7-22. Maybe you’re looking at velocity pressure (qz, qh)? The directionality factor moved out of that equation but into the pressure equation, so you’ll be getting higher velocity pressures but then these will get reduced when you calculate the actual pressures with Kd, G, cp, and GCpi.
@@QuickQuestionEngineering e se puder (e quiser) fazer uma versão em português também será de grande ajuda heheh Mas adorei as aulas em inglês pq achei o ASCE bem mais confuso que a NBR e você ajudou muito. Obrigada!!
what are PM questions?
@@franksantana8092 They are the depth questions that before were always in the afternoon. That’s why I referred to them as PM.
Obrigado pelas informações Eugenio. Alguem pode dizer como e o exame? Sou formado engenharia mecanica, mas trabalho na aviacao na area tecnica operacional. Gostaria de tentar validar a engenharia
Awesome video!! I’ll need like 1000hrs lol…I’m beginning the SE exam journey but I’m a field engineer even though my MECE is in structures.
@@engrxtn thank you! And best of luck to you!
Hello, Just to make sure about No. of rebars point (b): The code says 4 rebars for rectangular and circular columns. Circular, not square.
Great video. Do you have one for Components and Cladding? Breaking these topics is so helpful and engaging. Keep it up!
@@JulieFreund Thank you so much for the encouragement. My next one will be on the All Heights MWFRS method and then I’ll get into C&C!
Congratulations on passing the SE exam!!!
Thanks for sharing; have you taken the exam since?
@@ardalanhsn5564 I just got my results today and unfortunately I didn’t pass. The pass rate was 16%. I hope to get it next time!
@@QuickQuestionEngineering wow! That sounds really tough. I hope you pass next time, thanks for getting back to me. All the best of luck and success.
@@ardalanhsn5564 Thanks! Appreciate the support
Obrigado
De nada!
Can you check your Minimum wall pressure approach? Paragraph 28.3.4 in the Commentary Section (Page773) refers to figure C27.1-1. Figure C27.1-1, page 768, shows the 16 psf wind load on only one side of the building. In your spreadsheet you included both sides of the building.
Sorry for the delay in replying. Great catch! You're correct, the minimum pressures should be on only one side of the building as it is the "net" pressure. In my spreadsheet, the minimum base shear should be half of what is shown for load case A and B which will make the minimum pressures even farther away from controlling. Thanks again for pointing this out!
@@QuickQuestionEngineeringThanks for confirming. I will say I prepared a spread sheet similar to your example as it is well organized and helpful. In fact it was the way I discovered the discrepancy. I ran several wind conditions and was puzzled why the minimum was controlling. When updating some of the references to ASCE 07-22 versions I noticed the issue. One thing I did add was a simple sketch in excel and inserted the loads at each face, so it is easy to see the change in one view. Its a bit crude but if are interested I'll send a copy for review.
@@TheModelmaker123 That’s awesome! I’d love to take a look at it if you don’t mind. My email is quickquestioneng@gmail.com. I’m finishing up another video solving the same example but using the Directional Procedure Part 2. I just created a footnote to cover the minimum pressure checks and avoid confusion this time.
Hi sir should all my documents apostatized by the US in my country of residency where i take an FE?
thanks a lot!
Bravo!! for me, It was a perfect explanation. I hope you can show us the other methods or someone else can tell me where I can find them.
I posted videos for three methods on this playlist. Only one left now which I’ll post soon. Thanks for watching!
Congratulations 🎉
Congratulations!!
In step 5, Load case A for the roof why do you compare total vertical load in PSF to Horizontal Load in KIP to see what controls....? You also have "Wall Pressure" in that table with 8 psf listed as the min. isnt that roof min?
Thank you for catching this. In step 5, the total vertical load for the roof is in Kips. I mistakenly had it labeled as PSF. "Wall Pressure" in that same table should read as "roof pressure". I appreciate the feedback. I'll make sure to have these corrected for the next video.
Thank you.
You’re welcome!
Thank you!
If you’re reading this: you will understand this and finish Solid Mechanics. I believe in you, you got this!!!
thank you!:)
Hello, may I ask a couple of questions: 1. How come wind pressures for zones 4 and 4E came out to be negative values in Step 3, but went to the table in Step 5 as positive values? 2. Why do we check for uplift using the positive internal pressures only, and not the negative ones? Hope everything is doing well with your studies for the second try :)
Hi @iam_stl, great questions. #1. Zones 4 and 4E are negative values in step 3 because the pressure acts away from the wall surface (thus the negative value). In step 5, technically they are negative as well. In my spreadsheet, I used the absolute values for all pressures because I'm adding the pressures from the windward side (zones 1 & 1E) and the leeward (zones 4 & 4E). #2. I used the positive internal pressures only because they always control for uplift. The positive internal pressure acts from the inside of the building towards the roof and the roof pressures act away from the roof but from the outside. Therefore they add up, whereas the negative internal pressure subtracts from the roof uplift pressures. These are great questions that I may bring up in my next video. Let me know if my explanations made sense or if you have more questions. Thanks for the good wishes! I'm taking lateral depth today! 😬
very informative and clear video, keep it up man!
Thanks! I hope to post the next videos on this series soon
Great! I just feel like wind load are quite complex maybe I should say tedious. This envelope method I found is like most convenient method. I am probably going to use automation method in STAAD and compare with this simplified method. @@QuickQuestionEngineering
NOW LEARN ENGLISH, THEN YOU GONNA HAVE A VERY PROFITABLE WAY AHEAD!
My brain will blow up before I understand this
thanks for this video! It 's really useful for me!
Thank you!
very helpful but how did you get 6.75k for dead load? I got 4.32k...and for the 6x6 column, referring to NDS supplement did you check Douglas Fir Larch for 6x6 post and timber?Table 4d? I followed your design, it was helpful but my dead load + live load was 18. 27k and yours is 21k.. although my load was still adequate, I wanna know if I am missing something or was it just a blunder while you calculated the dead load? It would be really helpful if you could clear this off my head. Thanks for a great and fun video.
Thank you for watching and double checking the numbers. You’re correct! The dead load should be 4.32k, not 6.75k. For the post, I did use DFL No. 1 posts and timber from table 4D. Note that there are two lines for posts and timbers in this case. That’s for two different grading agencies, but Fc is 1,000psi for both.
Thank you, sir
You’re welcome!
Hi, Thanks for uploading, this is a very useful video and full of new information for me... I have a question plz, for your wind base shear, why did you sum loads from all 4 zones (1, 1E, 4 and 4E) ? shouldn't be one side at the time and then the base shear would be the largest of the 2 sides? Are you assuming that wind is blowing towards zones 1 and 4 at the same time ? Thank you!
Great question! We sum the loads because on one side we have a positive windward pressure, and on the other side we have the negative/suction leeward pressure. They act simultaneously as the wind hits the windward wall, travels around the side walls and create suction on the leeward walls.
Thank you for the explanation, I actually had it totally wrong 😅... I thought, since the building is enclosed and there is no internal positive pressure on the leeward walls, that the suction does not affect the MWFRS, but only affects the sidings or glazing attached to that wall...Cheers!