@@glichasasha750 Of cause you can learn something in 11 minutes. No one besides you thought you'd be a genius after this. And btw.: what need is there for you to pan someone? Just why?
@@Delibro of course you can learn *something* in 11 minutes. You can’t learn about trusses in 11 minutes. You are the absolute genius here. Read the reply first.
First time viewer. Genius is the ability to teach a complicated subject clearly, simply and comprehend able to an average person. Thank you for your time and knowledge.
That was brilliant. I really liked how you developed this, logically, from a single tension and a single compression structure to a structure with multiple members. Thank you.
Thank you so much for taking the time to make this video. I had a basic understanding of the loads involved in a truss, but some times had a hard time determining how the load was transferred through the structure. And it turns out because I was looking at it backwards. I would look at a bridge and try to figure out the load distribution by the weight of a truck sitting on it, not as the support structure resisting that load. I’m not sure if I explained that well, but your explanations helped a lot. What finally made it click, where I had that lightbulb eureka moment, was your graphics of the hands supporting the structure. I am very grateful for that, and again I appreciate you making these videos for everybody
One thing that pop in my head is when you build a truss on the ground and you use a crane to put it in place you have to consider that forces (tension and compression) will be the opposite way temporarily while moving it! Good video sir!
What I learnt after a whole career in structural engineering is that most of the time no one really cares about getting even an efficient structure (unless it is the primary structure of something huge), let alone a theoretical optimum. The exception is design-and-build contractors where their profit margin depends on minimising materials, but of course they won't do that at the expense of complication, which costs "more than materials".
Also dependent on consistency of loading - no good to have an efficient design for only one use case. Efficiency of design presumes at some level a predictability of loading.
As a structural bridge engineer, I often watch your clips and thoroughly enjoy them. You demonstrate great creativity and innovation in your work. Particularly impressive was the clip featuring an arch structure built on a small scale model, where you deformed its shape by applying load with your finger. Additionally, the clip discussing trusses was captivating, especially when you introduced the optimized truss, with one part functioning as an arch and carrying compression loads, while the other part acted as a cable and carried tension loads. Overall, your work is truly amazing. Thank you for creating such incredibly beautiful clips.
Liked and subscribed. I am an engineer and having come across your channel by chance I found it to be be beautiful in the simplicity with which you explain things that in our days professors bored us to death with explanations of vectors and forces that in the end left us as ignorant as we were before. Thank you Paul and please continue the illuminating work. Hopefully some young blood will stick with your presentations and learn much from them, especially in the area of being opened to the enthusiasm of learning beautiful concepts.
Vid came up with the algorithm while I've been studying for my Architect exams and brushing up on my structures. Just excellent explanations! VERY helpful.
So simple? No, it is made simple. A simple start, add elements one by one, understand each's role, comprehend the larger complecated picture. Very fine tutorial, that neither goes above head, nor allows to forget easily! Kudos.
Excellent presentation. As a teacher I compliment you on your presentation. A good teacher takes a complicated subject and explains it in an clear and easy manner that could be understood! Kudos!
As part of my job, I have to record historic bridges, both automotive and railroad. I love watching your video showing how variations on the Warren and Pratt truss bridges work.
God bless a true educator! Paul just found your lessons when you trusses lesson came along my feed. I'm 47 big old goof who only took physics for dummies in college and nothing ever in high school. This is so very interesting and well presented. So very well done Paul, thank you. I can't wait to get to your other content. And watch this one on trusses again.
I once made a small truss bridge for my daughter's cat. It was made of 1/4" x 3/4" pieces of white pine . Finished size was about 8 feet long and 6" x 6" square.. It was held together with hot melt glue. Imagine my surprise when we tested it's actual strength. It would hold two 90lb. bags of concrete!
I am a land surveyor currently doing my stage. I very much hope to work on a large world-class bridge at some point in my career. I have long loved bridges and considered them the greatest expression of Human engineering - because they link People together, they span gaps, they encourage exchange and cultural fluidity. The Ancient Roman Princeps was also the "Pontifex Maximus", the "Great Bridge-Builder". Spanning gaps is a Human fixation, it seems. There's so much glory in a great elegant bridge.
I wish I could of went to college and participated in programs like this. I had the absolute worst k-12 educational experience and the day I took the California high school proficiency exam was one of the happiest days of my life because I was done with school. I was bored out of my mind and my focus was on the clock counting down the time until I could go home. Who knows what I could of accomplished if I had the proper school environment. Unfortunately I have an eidetic memory so I can vividly remember every single day of school. I often wonder just how many people have similar experiences to myself. I did have one teacher who recognized my abilities and had my intelligence tested and was absolutely astonishing by my IQ score. That teacher attempted to understand how someone with my intelligence was a consistent D- student.
I dropped out of engineering college because I couldn't understand or imagine in my head,this particular topic.. only if teacher like you could have changed everything.. again thank you for the upload 🙏
Thanks for a truly excellent presenttion of the concept of tension/compression in trusses. If only the rest of the world could employ logic as well as you engineers....
Thanks...and in this video I explain why all cafe tables, if designed by engineers, would have 3 legs not 4 and therefore not wobble! ruclips.net/video/LYVn4js2izM/видео.html
Making only one set of lines bend on the paper was the best magic trick I've ever seen, you should headline at Vegas! Just kidding, but it wasfantastic in its simplicity to show a complex idea as was the rest!!! Well done my firend.
Hello Paul, I’ve been trying to find the right definition or rather the exact difference between a beam and a girder, I am a marine engineer so I deal with beams and girders on a daily basis, but I find them structurally very similar so it would be great if you could help me break down their fundamentals….. Thanks for the videos… keep them coming!
Correct - they behave the same way under load...it's us that use words to describe them. quarrydawg is right that, for those who use them often, beams typically frame into girders and that relates to their use. Now let's talk about joists....
Fantastic video thank you for explaining all the physics behind each of the different kinds of geometry that was very helpful. I’m trying to learn how to build trusses in the house and this definitely answered my questions.
Sir i have an ultimate question. On 6:36 you show very good tension variation braces. But what type of braces we need if we want place kettlebell ( load) not only in the center but on top of every vertical compressed stands and it will be 3d truss and the edges of the 3D truss (beam) will be rigidly fixed too??...What the best solution for such complicated situation
Hey: I have been watching your video series on structures, and I would like to commend you on both the quality and content of these videos...really well done. In terms of trusses, which truss design do you favor for over all strength for uniform compression loads? Again, thank you for taking the time and effort to make the structure videos.
The blue ones if you look at them from a front view rather than side view is that they are usually made with "X" webbing along their length . Is this to reduce the weight of the these? I work with model railroading & I have some Truss bridges that are on my layout.
compression force acts on both upper & lower cords of the truss that is in the rafter & lower cord # therefore we cantilevers are necessary to decrease the compression in both upper & lower cords #🇵🇰
Great Video. Building a bridge for a science project in 9th grade but the weight (load) will be placed to the right or left of center of mass. Do you reinforce the the left or right side with thicker trusses? Thanks
Paul, I have a small block of land with site P classification, it is near a river in a small town in NSW, AUSTRALIA, population about 500 people on a lucky day. I need to find the cheapest possible way to construct a building, (shop and residence). I have been thinking that perhaps a bridge design would do the trick. I have recently completed my builders course and this project is going to be my first building construction and I am interested in doing it right, so it will stand for generations after I depart the planet. Would you mind giving me asking you for a good idea on how to use trusses to span between concrete capping supported by concrete columns which themselves are resting on screw piles. The trusses would operate as beams supporting the suspended floor. The local authority, because the land is on flood zone, requires the floor to be raised half a meter (500 mm) above ground level, and the floor can be a concrete slab or timber floor. Thank you, Franklin.
this is what's great about RUclips, by accident you learn about something you've been observing but not really understand for years 👍
The RUclips algorithm giveth and it taketh away.
If you think you can learn about trusses in 11 minutes you are delusional.
@@glichasasha750 Of cause you can learn something in 11 minutes. No one besides you thought you'd be a genius after this.
And btw.: what need is there for you to pan someone? Just why?
@@Delibro of course you can learn *something* in 11 minutes. You can’t learn about trusses in 11 minutes. You are the absolute genius here. Read the reply first.
First time viewer.
Genius is the ability to teach a complicated subject clearly, simply and comprehend able to an average person.
Thank you for your time and knowledge.
Thanks!
That was brilliant. I really liked how you developed this, logically, from a single tension and a single compression structure to a structure with multiple members. Thank you.
Great explanation Paul. I am an architect, and these kind of clear explanations gelp not to exclude us from understanding structural behavior.
Thank you so much for taking the time to make this video. I had a basic understanding of the loads involved in a truss, but some times had a hard time determining how the load was transferred through the structure. And it turns out because I was looking at it backwards. I would look at a bridge and try to figure out the load distribution by the weight of a truck sitting on it, not as the support structure resisting that load. I’m not sure if I explained that well, but your explanations helped a lot. What finally made it click, where I had that lightbulb eureka moment, was your graphics of the hands supporting the structure. I am very grateful for that,
and again I appreciate you making these videos for everybody
You're welcome!
I'm less than two minutes in, but can already tell that I've just struck RUclips gold! New sub!
Thanks!
One thing that pop in my head is when you build a truss on the ground and you use a crane to put it in place you have to consider that forces (tension and compression) will be the opposite way temporarily while moving it! Good video sir!
Very good point!
What I learnt after a whole career in structural engineering is that most of the time no one really cares about getting even an efficient structure (unless it is the primary structure of something huge), let alone a theoretical optimum. The exception is design-and-build contractors where their profit margin depends on minimising materials, but of course they won't do that at the expense of complication, which costs "more than materials".
Is that in which country?
Also dependent on consistency of loading - no good to have an efficient design for only one use case. Efficiency of design presumes at some level a predictability of loading.
Thank you sir. Anyone with a PHD can explain physics to other well educated people. It takes a master to explain it well to us simpletons.
Thanks!
I have designed trusses at a wood truss manufacturing plant, but never understood this. The software just did if for me. Thank You for sharing.
As a structural bridge engineer, I often watch your clips and thoroughly enjoy them. You demonstrate great creativity and innovation in your work. Particularly impressive was the clip featuring an arch structure built on a small scale model, where you deformed its shape by applying load with your finger. Additionally, the clip discussing trusses was captivating, especially when you introduced the optimized truss, with one part functioning as an arch and carrying compression loads, while the other part acted as a cable and carried tension loads. Overall, your work is truly amazing. Thank you for creating such incredibly beautiful clips.
Thanks!
Using the paper to explain was brilliant, it even made understand the reason behind using differential calculus. Thank you🖖
You're welcome! I'm glad you found it helpful.
Liked and subscribed. I am an engineer and having come across your channel by chance I found it to be be beautiful in the simplicity with which you explain things that in our days professors bored us to death with explanations of vectors and forces that in the end left us as ignorant as we were before. Thank you Paul and please continue the illuminating work. Hopefully some young blood will stick with your presentations and learn much from them, especially in the area of being opened to the enthusiasm of learning beautiful concepts.
Thanks!
Vid came up with the algorithm while I've been studying for my Architect exams and brushing up on my structures. Just excellent explanations! VERY helpful.
So simple?
No, it is made simple. A simple start, add elements one by one, understand each's role, comprehend the larger complecated picture.
Very fine tutorial, that neither goes above head, nor allows to forget easily! Kudos.
Excellent presentation. As a teacher I compliment you on your presentation.
A good teacher takes a complicated subject and explains it in an clear and easy manner that could be understood!
Kudos!
The tutorial showed up when I needed it the most. God Bless you Sir.
This is the most brilliant explanation of trusses I have ever seen.
Thanks!
As part of my job, I have to record historic bridges, both automotive and railroad. I love watching your video showing how variations on the Warren and Pratt truss bridges work.
Thank you very much!
I love just going out in the world and trying to understand things work and being able to just ask that question and get a video on it.
It's so intuitive and fun when explained like this !
You're welcome!
I liked his diagrams. They showed the magnitude and direction of forces in a way I could understand.
Great!
Poly Bridge leaderboards, here I come!
well explained, I think the magic in understanding it all ,is breaking it down into small thinking process blocks
Wow! The way I look at bridges is changed forever. I had to subscribe after watching this video. Thank you 👍
Great to hear!
Paul this is such a concise and beautiful presentation! Your style works so well, like a great piece of music. Well done!
Thanks!
@@PaulKassabian 0:50 0:59 0:59 0:59 0:59 1:00 1:00 1:00 1:00 1:01 confused right abt here, sir pls help
Amazing explanation of TENSION & COMPRESSION using a PAPER!!!
I like how you teach visually, as it can be difficult going straight to maths without an intuitive understanding.
wow, you demonstrate the truss concept in step by step, this is very easy to understand and truly a clever method. Thanks!
You're very welcome!
Wonderful explanation made simple and elegant to understand 😊. Thank you paul
Glad it was helpful!
Me watching these videos so I can built better bridges in Poly Bridge 3.
Very basic knowledge that many people don’t know. Thanks
10:40 ❤ “when you have a limited situation or something you can control, you are able to optimize more”
God bless a true educator! Paul just found your lessons when you trusses lesson came along my feed. I'm 47 big old goof who only took physics for dummies in college and nothing ever in high school. This is so very interesting and well presented. So very well done Paul, thank you. I can't wait to get to your other content. And watch this one on trusses again.
Thanks and more to come!
I once made a small truss bridge for my daughter's cat. It was made of 1/4" x 3/4" pieces of white pine . Finished size was about 8 feet long and 6" x 6" square.. It was held together with hot melt glue. Imagine my surprise when we tested it's actual strength. It would hold two 90lb. bags of concrete!
I know this is a late comment, but this explained it well, thanks Paul.
Nicely explained! Brings back my Statics lectures from a few decades ago. I might have to dig my textbook...
Good idea, I'll wait...
3:35 “you have to truss me on this”, well played
Structural Engineer: uses hi NOSE to point out something
Me: EVEN MORE respect
Just discovered this while taking a structures class, this is very helpful and easy to understand. Thankyou!
You're welcome!
I am a land surveyor currently doing my stage. I very much hope to work on a large world-class bridge at some point in my career. I have long loved bridges and considered them the greatest expression of Human engineering - because they link People together, they span gaps, they encourage exchange and cultural fluidity. The Ancient Roman Princeps was also the "Pontifex Maximus", the "Great Bridge-Builder". Spanning gaps is a Human fixation, it seems. There's so much glory in a great elegant bridge.
UÁU !. Inglish Is not my original idiom, but, any way, I can say your class was realy wonderfool!!! ( from Argentina).
Love this video.... Well illustrated for the beginner...
Glad to hear it!
That is brilliant ,it instigates useful ideas that can be used in truss and tie model in the design of deep beams of reinforced concrete designs
Glad it was helpful!
Genius teaching style. Take love from Bangladesh ❤️❤️
best video so far for me, this is perfect for civil engineering students. more power to you sir thank you
You are most welcome
I wish I could of went to college and participated in programs like this. I had the absolute worst k-12 educational experience and the day I took the California high school proficiency exam was one of the happiest days of my life because I was done with school. I was bored out of my mind and my focus was on the clock counting down the time until I could go home. Who knows what I could of accomplished if I had the proper school environment. Unfortunately I have an eidetic memory so I can vividly remember every single day of school. I often wonder just how many people have similar experiences to myself. I did have one teacher who recognized my abilities and had my intelligence tested and was absolutely astonishing by my IQ score. That teacher attempted to understand how someone with my intelligence was a consistent D- student.
Beautifully explained and great outro music.
Glad you liked it!
I dropped out of engineering college because I couldn't understand or imagine in my head,this particular topic.. only if teacher like you could have changed everything.. again thank you for the upload 🙏
You are most welcome!
Thanks for a truly excellent presenttion of the concept of tension/compression in trusses. If only the rest of the world could employ logic as well as you engineers....
Thanks...and in this video I explain why all cafe tables, if designed by engineers, would have 3 legs not 4 and therefore not wobble! ruclips.net/video/LYVn4js2izM/видео.html
You explain in such a way that it is easy to understand, bravo!
That part about the optimization of trusses spot on
thanks - much appreciated!
by mistake i finaly found a worthy channel .
I’m so friggin pumped on this channel!!!❤❤❤
Great presentation!
thanks!
Thank you sir
Very interesting
especially the arches and cables
you find in the efficient truss
absolutely remarkable
thanks!
Wonderful explanation made simple and elegant to understand 😊. Tha k you paul
Great video with clear explanations!
Thank you for that. You bridged my understanding
3:12 the best explanation , ever, on youtube !
Sophisticated and simple. That's brillian.
Thanks!
Fantastic work! Thanks Paul!
These videos are great for helping me throughout my apprenticeship!
Glad you like them!
Making only one set of lines bend on the paper was the best magic trick I've ever seen, you should headline at Vegas! Just kidding, but it wasfantastic in its simplicity to show a complex idea as was the rest!!! Well done my firend.
Vegas is the goal...
you had me at "I'm a structural engineer"
Awesome explanation !!!
Glad you liked it!
Amazing teacher!
Thank you! 😃
You are a great teacher! Nice job with this.
Thanks!
Excellent Poly Bridge 2 tutorial.
Correct - that's the only reason I made this video...
@@PaulKassabian It also happens to be a really informative and accessible video for those who want to learn more about structural engineering.
Nicely done ! Cheers !
Hello Paul, I’ve been trying to find the right definition or rather the exact difference between a beam and a girder, I am a marine engineer so I deal with beams and girders on a daily basis, but I find them structurally very similar so it would be great if you could help me break down their fundamentals….. Thanks for the videos… keep them coming!
Beams and girders are not different, girders are just bigger. Girders are just beams that other beams frame into.
Correct - they behave the same way under load...it's us that use words to describe them. quarrydawg is right that, for those who use them often, beams typically frame into girders and that relates to their use. Now let's talk about joists....
I like the way you explain. I found your approach very logical and easy to follow.
Thanks!
Great informative video.
Armenien people usually are very good in technical fields.You proved that they are also very good in teaching ! 👍
Thanks for both!
Nice use of West Point Bridge Designer! I used that with my middle school Technology Education students for many years.
You ar an amazing teacher! Thanks for sharing your knowledge. I subscribed.
Awesome, great to hear!
좋은 영상 감사합니다 탁월한 전달력 최고네요
Thank you, simple and concise!
You're welcome!
Fantastic video thank you for explaining all the physics behind each of the different kinds of geometry that was very helpful. I’m trying to learn how to build trusses in the house and this definitely answered my questions.
Great lesson thanks for this lecture
Truss him guys, he's an engineer!
Brilliant .. God bless You !
Good illistration technique
A wonderful video, a beautiful explanation. thank you very, very much. I am not an engineer but I enjoyed this very much. I always wondered.
Glad it was helpful!
Brilliant way to explain the truss geometry... Thanks
You are welcome!
Sir i have an ultimate question. On 6:36 you show very good tension variation braces. But what type of braces we need if we want place kettlebell (
load) not only in the center but on top of every vertical compressed stands and it will be 3d truss and the edges of the 3D truss (beam) will be rigidly fixed too??...What the best solution for such complicated situation
Is there any simulator available online, to simulate such structures?
Hey: I have been watching your video series on structures, and I would like to commend you on both the quality and content of these videos...really well done. In terms of trusses, which truss design do you favor for over all strength for uniform compression loads? Again, thank you for taking the time and effort to make the structure videos.
My brain is not comprehending after you flipped everything
good to know...maybe you can watch the rest of the video doing a handstand then you'll be fine!
Could tou explain how a hammerbeam truss works? Specially those used in english churches, the angel roofs?
I'm planning a follow-up video on different types of trusses so thanks for the suggestion to add that one in!
Wow. Thank you so much. Inspiring.
Glad you enjoyed it!
The blue ones if you look at them from a front view rather than side view is that they are usually made with "X" webbing along their length . Is this to reduce the weight of the these? I work with model railroading & I have some Truss bridges that are on my layout.
compression force acts on both upper & lower cords of the truss that is in the rafter & lower cord # therefore we cantilevers are necessary to decrease the compression in both upper & lower cords #🇵🇰
This might actually help me finish all those bridge building games I own ^^"
Great Video. Building a bridge for a science project in 9th grade but the weight (load) will be placed to the right or left of center of mass. Do you reinforce the the left or right side with thicker trusses? Thanks
Overall, the closer the load is to one side of the span, the more goes to that side. Good luck!
Soo good!!!!
thanks! Do keep watching!
This was a great explanation. Thanks!
Paul, I have a small block of land with site P classification, it is near a river in a small town in NSW, AUSTRALIA, population about 500 people on a lucky day. I need to find the cheapest possible way to construct a building, (shop and residence). I have been thinking that perhaps a bridge design would do the trick. I have recently completed my builders course and this project is going to be my first building construction and I am interested in doing it right, so it will stand for generations after I depart the planet. Would you mind giving me asking you for a good idea on how to use trusses to span between concrete capping supported by concrete columns which themselves are resting on screw piles. The trusses would operate as beams supporting the suspended floor. The local authority, because the land is on flood zone, requires the floor to be raised half a meter (500 mm) above ground level, and the floor can be a concrete slab or timber floor. Thank you, Franklin.
now , i am a structural engineer !