The Secret Behind the "I-Beam" Strength
HTML-код
- Опубликовано: 3 ноя 2019
- This video explains why the "I-shape" is much better at carrying bending loads compared to other shapes. We compare different shapes of beams and analyze their behavior.
If you enjoy our work, we won't ask for anything more than a coffee :)
www.buymeacoffee.com/engineer...
Videos Obtained from: pexels.com
Video Authors: Tom Fisk, KML, Ricardo Esquivel
Photos Obtained from: stocksnap.io & pexels.com
Photographers: Todd Quackenbush & Sam Kolder
Track name: Creative Minds, Slowmotion
Music from: www.bensound.com
Composer: Benjamin Tissot 
Наука
Great videos,as a 70 yo retired iron worker, it's great to see an explanation of all the shapes and their application in a structure. I always enjoyed quizzing the onsite engineers for information. I spent 35 years erecting bridges, buildings and very large industrial complexes. Thanks for your presentation!
Hi Mark,
We are glad you enjoyed the video!
As structural engineers, we have great respect for iron works such as yourself.
We also have another video about I-beams which you may enjoy:
ruclips.net/video/WkLjcKYjwnU/видео.html
I really like that you enjoyed it. Obviously I didn't make the video but I'm studying engineering and find the videos are really accessible for everyone. It's impressive and I suppose props to the creator for being able to create a video that both sides can understand and appreciate
@@landii99 Jonathan , complete your studies and enjoy the satisfaction,pride and sense of accomplishment when you drive across or view a city skyline you helped create! Best wishes, Mark
Great to hear from a veteran. Respect.
@@J3n555 Thank you, I appreciate your remarks! Best wishes to you Mark
Great video,I'm a residential framer in NC and lately we have been using steel beams more often so its good to know all this!
TY for the video!
We are really glad to hear that Teodoro. We are a small growing channel and comments of encouragement like this mean a lot to us. We are preparing a video about the weakness of the I-beam that will be published sometime in the following week. If you are interested you can check that out to understand what situations and loading conditions are actually fatal for the I-beam.
@@TheEngineeringHub I beams are weak and junk. They just collapse from small office fires.
Once again your videos are very useful! Thank you for your work and please keep making new videos 👏🏻
This video reminds me of my final Mech Engineering exams in Strength of materials. I was easily able to calculate the deflection in an I-beam using a method called work-energy equation. Basically the load applied, multiplied by the deflection equals the energy stored in the beam. Even my professor was impressed as he hadnt taught us this method in lectures. It is also super quick and easy. I was out of the exam hall 30 mins ahead of my classmates. Ah the memories.
Hi Nyjawonder, indeed that method is very powerful! Very impressive that you could apply it without it being taught to you since it is difficult for many people to grasp that concept due to its abstract nature. As a side note for other viewers: that method is derived from Castigliano's theorem and it states that the elastic energy stored in the structure equals the work done on the structure by external loads. Since work is Force x Distance (W=F*d) this allows for clever applications that simplify the computation of structural displacements.
You are using too many rechnicle terms try to explain these elements in lay language, Please
@@TheEngineeringHub 6 ti
Hi Ted, does this apply to the video or to our comment above? Just curious so we can improve in the future.
Last line told your brilliance
I'm an engineer too and I absolutely LOVE engineering! It's fascinating how seemingly complex engineering processes are usually the simple result of careful thought and the application of basic principles. I'm so impressed by all the incredible feats of engineering that have enabled modern civilization and technology. I love that engineers have such a passion for their work and I understand why they are so dedicated and motivated to solve problems. Engineering is truly an amazing field and I'm proud to be a part of it!
Very helpful video to understand the comparison graphically.
Expecting the further engineering stuff in another videos.
Thanks.
More to come!
Thank you! As a learner, I respect your labor!
Thanks for adding more clarity, which is not there in any other video on RUclips. Wish u a wonderful growth of subscriber
Thank you so much Bhadrasheel, we are trying to be clear and entertaining. This was our first video; we hope to get only better from there on.
It is not just people with an engineering background who view your channel so it would be nice to have something is lay language for our assimilation. Bless you!!
Thank you so much for your feedback Ted! These comments are very important to us and we take them seriously. We will try to improve in the future and make our content more available to non-engineering viewers as well. Maybe a little bit less mathematics and physics and more analogous examples to illustrate the point. Thank you sir!
@@TheEngineeringHub I am a non engineer and like it just the way it is. Don't dumb it down, I came here to learn.
The key to building strong and light structures using less material is by careful use of geometry... eg. triangulation in trusses. The above mentioned I-beam actually functions as a truss except that it uses solid instead of triangular ‘webbing’.
That is a good point Zuko! An alternative (reverse) way of thinking would be that a truss is an I-beam that carries compression and tension at the top and bottom chord members. The triangular bracing facilitates this area being moved away from the center (neutral axis).
@@TheEngineeringHub framing in one direction with rigid nodes... while bracing in the perpendicular direction... at least that's how I do my main layouts!
Awesome video! Thank you!
Glad you liked it AJ!
That was , very cool , thanks
Really great video earned sub
Good information 👍
Thanks 😊
Great video, very informative and inspiring ❤✔
A well explained video video that uses metric gets my vote.
Thanks for the video so informative
Glad it was helpful!
I beam need to be used cautiously , while some engineers don’t understand the important of restrain to lateral bucking , web buckling and it’s weakness to act as compression strut . Plastic moment capacity could fully realised only by proper restrain on plastic member .
You are absolutely right Drag without proper constraints there is a risk of buckling before reaching the full plastic capacity. This video would have been too long if all of the buckling issues were also addressed. Though, the comparison of the sections and information presented still holds true even if it was done only up to the yield point (elastic strength). We actually made another video that deals with the issues of buckling. Feel free to check out "The Flaw of the I-Beam" and give us feedback if we covered that topic well. Thank you for bringing this up, indeed it is very important.
Good stuff - thanks
We are glad you liked it and thank you for watching!
would love to see similar styled video for composite/sandwich panels, showing how the skin effect increases stiffness.
Great suggestion! We will add it to our list of future videos!
V.good and clear really i enjoyed this excellent explanation.
Thank you so much Mohamed, we are really glad to hear!
great video, i was your 100th subscriber ;)
Thank you, I appreciate the support. I subscribed and checked out your videos too. You sir have a great library of educational videos. I am currently working on my master thesis dealing with plasticity models and non-linearity.
I will be visiting your channel pretty regularly given the amount of knowledge you have shared!
@@TheEngineeringHub what software do you use to draw the nice load displacment plots? also congratz to 84 k subscribers you beast
@hnrwagner haha I see you remember the comment. This one I believe was with adobe illustrator and adobe after effects
thank you. may you tell me what program/software you use for animation of the deformation?
Hi Dagne thank you for your comment. The animations are mostly drawn in AfterEffects.
ஓரளவிற்கேனும் புரிந்து கொள்ள எம்மால் இயலுகிறது. நன்றி!
🙏 Thank you very much 🙏
Good information
Thank you for your feedback! We are glad you enjoyed the video.
what about alternative shapes, such as a triangle, or something more complex such is an I beam, but with 3 prongs per side instead of 2?
You can make bridges with Polystyrene too, yes apart from fire risk, poly bridges can be strong but has to be large, and water proof.
That's right! Polystyrene and other similar insulating materials can have very high compressive strengths, and are very light.
Thank you for your comment!
can simply apply the formula of stress=My/I and comparing “y/I” or section modulus and section area between common shapes.
It will be more clearly and mathematically present why I-beam is more effective and efficient than other sections.
Yet, it’s a great video, bless you.
Hi Ayden,
We completely agree with you, the mathematical solution is very clear.
Thanks for watching, and check out our other video about I-beams if you like!
ruclips.net/video/WkLjcKYjwnU/видео.html
I weld Ibeams at Work. I hated taking out the rosebud to straighten it back outs
Sir. Which software are you using to make this animation. I am a student interested in animation
Thank you sir
Hi Manoj, for this particular video the animations are done in Adobe AfterEffects. The beam simulation is performed in Abaqus which is an engineering software mostly suitable for calculations. For a start, a combination of Adobe AfterEffects (for animating) and Adobe Illustrator (for drawing) should be enough. If you want to get by cheaper you could also only use AfterEffects which has a decent drawing platform as well. I hope this helps, let me know if you need more info. Have a good day and good luck !
@@TheEngineeringHub thank you sir. That's so nice of you🙂
Would like to have seen a triangle tested as well, just for the heck of it.
Another, probably more important, benefit of I-beams is the high stiffness to weight ratio. Steel structures are typically controlled by deflection or fatigue requirements not strength. An I-girder in bending which is sized appropriately to limit deflections is typically plenty strong for the ultimate strength checks. This is true for beams in building and bridges.
You are raising a very valid point. What follows in this reply is not to say that you are wrong but rather to explain why we did it the way we did. The purpose was to illustrate how the I-shape is efficient at carrying bending loads regardless of the material (even though we used perfectly-plastic steel for our material model). The shape of the section impacts both ultimate and serviceability limit states and the governing condition would vary depending on many factors as you already know. We chose to illustrate the secret through the generated stresses because it is physically more intuitive for non-engineering viewers. Cheers and thanks for the comment, we appreciate it!
Good video but you failed to cover various directions of force against an I beam. Is it just as strong in any direction? If not, how is strength affected?
I like science!
Excellent in-depth explanation!
Thank you so much Willie Snyder!
It's crazy that a balance poll has a high moment of inritia, just like the I-beam, so they both are less likely to twist.
Is the moment resistance the same if you apply the force perpendicular to axis of the ibeam rather than the rims?
No, the beam is significantly weaker if the load is applied in a direction different than directly vertically down. This is because the moment of inertia is much lower for the other axis. Also, applying the vertically down but off center significantly weakens the beam due to the torsional forces that are generated.
Hello, the weight is 5.5 tons per meter. Which type of iron can bear this weight? Thank you
I’m curious… would two equilateral triangles boxed kinda like an hour glass with the I-beam be better?
probably not because it would have a lot more mass. This mass would worsen it. This way the thickness is only at the furthest edges.
Perfect 👍video
Thank you Rishi, your support means a lot to us!
I was expecting an explanation of the difference between HE and IPE (European profiles) but I see your point ;)
...Why do I always find myself watching this kind of stuff at 3 AM
Can you please tell me how to calculate Capacity of one I beam
Question to all these brains on this thread; how strong is that I beam really? How much weight would it hold up theoretically under water? Just trying to wrap my head around how strong it is and want a visual....question two - would a “nested I beam system” be stronger?
What would the comparison be like when comparing the hollow square steel beams with a hollow round steel beam (steel pipes)?
Hi Fristo, the square would perform slightly better when subjected to bending loads due to its top and bottom flanges providing stiffness against bending. However, if the beam is loaded eccentrically i.e. with a torsional load, then the circular shape would have the upper hand.
@@TheEngineeringHub thanks for the explanation, appreciate it!
Thanks a lot.....make more video Engineering related... 💜♥️💜
More are on the way! In meanwhile, you can check out some of our other videos!
Good Video...👍🎉❤️🎈
Thanks for the visit
I wish you would compare the I-Beam to a hollow tube. This will be much stronger than a solid rod, since the diameter of a tube is bigger than for a solid rod of the same weight per length.
Yes it would, absolutely. We thought the hollow square would already sort of cover this group so we included a solid section as the last beam. It was our first video, still lots of improving to do.
If I had a 1m box steel tube 3inch by 2inch laid flat and I had a concrete pad at either end then put an evenly distributed structural load on top the same length as the beam would the beam bend
How about C channel? It's an I beam with the web on the side rather than the center. My gut says that its weaker, but why?
Hi Timothy, thank you for bringing this interesting discussion up. The C channel is actually used less frequently as a bending member. At first glance, it seems very similar to an I-section (just as you pointed out the web is on the side), however, this shift of the web breaks the symmetry about its vertical axis. This means that if a load is applied equally across its top, the beam will tend to twist away from the web and generate torsional (shear) stresses that drastically reduce the load carrying capacity. Check out our video on the "Flaw of the I beam" if you are interested to understand a bit more of the reasons behind this phenomenon. In summary, the C channel is weaker in carrying bending loads but that is not because of its low moment of inertia but rather a different feature regarded as torsion in the engineering world.
@@TheEngineeringHub I figured that was the case and I pictured the load would do something because it's not centered on the web but now I have a better understanding of why. Thank you for the reply.
@@timothyball3144 that's exactly right! We are happy you found our videos informative. 🎥🏗
Yes sir this is helpful vedio
We are very pleased to hear, if you found this interesting you may also find our other video on the flaw of the I-beam captivating. You can check that out here:
ruclips.net/video/WkLjcKYjwnU/видео.html
Hi, good clear presentation. Your statement that fully plastic bending (all bottom yielded in tension, all top yielded in compression) is not quite correct. The criteria that are applied or the limits allowed depend on the industry. Certainly it is not allowed in aircraft.
Yes, good point emma, and most structural elements would not experience anything in the plastic range (unless are exposed an earthquake where plasticity is desirable). But theoretically, loading a beam in a lab would cause that type of plasticity in the beam.
The beam is in a system, it's not on it's own. The system it's affectted be the beam that is affectted by the downwards force. The system also changes how the beam behaves. It's a bit more complicated than in your exemple. Also what are the ratios between the 3 beams?
Hi Daniel, can you elaborate what you mean by a system? Are you alluding to a floor assembly? Also what ratios are you referring to? By any means, a 6 minute video does not capture all aspects of beam analysis and design but which aspect you found low in complexity in this example? The purpose was to illustrate how the I-shape is more efficient than the other 2 shapes in carrying bending loads (which it is in almost all assemblies or systems).
Great
Thank you
Thank you for the comment and you are very welcome Jack
small correction, I think we call it "Mass Moment of Inertia" and not just "Moment of Inertia". Feel free to correct me.
Yes mass moment of inertia is definitely a thing. But its importance is for dynamic systems where there are accelerating (rotating) bodies. For static systems, we use the [area] moment of inertia or also known as second moment of area. You can read more about it here:
en.wikipedia.org/wiki/Second_moment_of_area
Thanks for bringing this up, it is important to distinguish the two, though they are also very similar just have slightly different applications.
@@TheEngineeringHub Thank you for clarification. I love your content.
Question: Why is an I shape better than say, an III shape? Would 3 'pillars' in the same total area be better? I can understand why its better than a solid beam in terms of weight/strength ratio and thus providing advantage in costing less and weighing less, but is all the removed material entirely redundant for integrity or is it just going past the point of diminishing returns?
It is more difficult to produce due to the enclosed area and irregular shape. Also, if you divide the web of the single I into III (with equivalent area), you may get very thin and flimsy webs that are susceptible to local buckling
@@TheEngineeringHub Fabrication and thus cost I understand, and apologies I meant more than just 1, not necessarily that it had to be the same volume split into 2-3 beams, but say, 2 or 3 of the same amount of material, would this become negligible in advantage?
@@typhvam5107 to be honest with you I haven't tried computing the properties of such a beam. All things considered maybe there is a use case for such shape. Though I am afraid any potential savings in material might be offset by production cost.
@@TheEngineeringHub Thank you very much for the response either way!
Please explain second moment of inertia.
Second moment of area (or moment of inertia) is a property of a shape that captures the ability of that shape to resist rotation. From a mathematical point of view it represents how far the sectional area is from the center of the beam. The moment of inertia is dependent on the axis about which it is calculated. You can see two different examples of the same beam but different moment of inertia:
www.mem50212.com/MDME/MEMmods/MEM30006A/Area_Moment/Area_Moment_files/compare-wood-beam-standing.jpg
Clearly Beam 2 on the image on the link has a lower moment of inertia and therefore it will bend more.
Thank you … as a high school drop-out, I’ve tried to understand what a ‘moment’ is, and in 5 minutes of your explanation I finally got it. Thank you.
Never too late for a GED, could change your life.
So the box beam isn’t as strong because it’s not as tall? Seems like the 2 vertical walls would help compared to one.
Hi Matthew, the two vertical walls enclosing a box help in handling different types of loads (e.g. torsional loads). In this case, however, since all three beams use the same amount of material that means that the box beam has less material in the top and bottom flanges compared to the I-beam. In essence material from the top and bottom is taken to make the second vertical wall (aka web). When the material is placed far away from the neutral axis (middle), the beam can carry higher bending loads. You can check out our video on the weakness of the I-beam, to see the utility of the box beam.
What's some of the disadvantages of steel beams?
Check out our video on the Flaw of the I-beam to learn its most serious design limitation.
You didn't mention the box beam?
Hi You, the video was meant to focus more on the I-shape and its advantages. However, we made a new video that talks a bit more about hollow sections and the flaws of the I-shape. If you are interested, you can check that out here:
ruclips.net/video/WkLjcKYjwnU/видео.html
@@TheEngineeringHub ok thnx
Anyone who worked on overhead cranes. knows you just throw a chanell on top
Man I wanted to be interested in this video, but I guess I'm just too dumb, LOL....sounded very interesting.
I am not from europe, would be simpliar to use US Standard numbers. In future vids...won't you include U S Standard? Thank you, All the best, Pete
In construction, we call them W Shapes or wide flange beams.
I believe there is an art in every trade and I believe in engineering, the art is building a structure with the least amount of materials as possible. Ie. Anyone can create a mold and fill it with steel and call themselves an engineer, but that is impractical. What makes a engineer great is building that structure as mathematically sound, with practical materials. I build custom homes and always wondered what is really needed to construct some of these structures, instead of lazy, over built, boxes full of steel. For example, why isn’t the 2 6x14 packing used on each side of a w14x68 used as part of the calculation of said span. It obviously makes the beam stronger. When I first started 24 years ago, there were little to no moment frames, when there was a moment frame, it was much lighter. There was very little to no steel. Now, the entire house is made out of steel. It’s sad
We absolutely agree Adam! A good engineer should be able to walk the line between a safe and risky design. Though, the amount of risk taken usually comes down to standards and codes put in place by the authorities. But regardless, an efficient design that utilizes just the right amount of material is best for all parties involved and for the environment.
lmfao why is it "sad". you clearly have just a rudimentary knowledge of engineering because of the way you idealized things. is the engineer responsible for Fabricating and installing ? no... so can't just make it a bit stronger than what is needed. there's a lot of safety factors everywhere to account for material differences (which is minimal) and lack of perfect labour (outright negligence at times). I dont like when people insinuate that there is a conspiracy or whatever. no it wasn't more efficient 25 years ago like people do this for a living non stop your just the guy who installs the beams (even then idk if ur a steel erector or you sub that out). please have some humbleness about this.
@@grimendancehall it’s sad because the homeowner is spending literally hundreds of thousands of dollars more for a product because your a lazy, money hungry thief. Your absolutely correct in saying that there is negligence in the installers, especially now, but is it not your job and responsibility to preform a thorough structural observation. I walk jobs with engineers almost weekly, most are in and out within 10 min. That’s not what your paid to do, your paid to observe and correct mistakes. I know why you over engineer homes, because you get paid when it comes out of plan check. The less trips to the city, and the faster it gets stamped, the sooner you get your precious money. Sad, sad sad. Lazy, no good for nothing thief, is what that is. I’m a framer by the way, a very good one. I build 10k-50k sf homes in bel air and Malibu. You think the math has changed in 20 years? You think your so much smarter than the engineers of the past? You keep working on math equations that have already been solved? Is the answer different 20 years later? The next time you decide to place a steel column, with a massive beam on top of it, because you “just” want to be done with a set of plans. Remember the cost ( material AND LABOR) of the imbed, the non shrink grout that delays the job, the nailers, the packing in and around the beam, the ledgers, nuts, washers, the hold downs and sds screws. Please understand that this labor is more time consuming than any other phase of framing. Not that you care, because someone who has written what you wrote above cares about 1 thing, and 1 thing only, MONEY. Your not an artist, your a thief. I’d love to know what you Engeneer on a daily basis, I’m guessing garages, or section 8 apartments in Detroit.
@@CoachBru999 bro I read one sentence and ur too inexperienced to continue. hey pal, inspections aren't meant to correct an entire negligent install or fabrication.... its impossible to inspect to that detail especially every single part on a job. you clearly have just a rudimentary knowledge of engineering and its practical application in the real world
@@CoachBru999 lmfao please look at a basic floor joist span chart and tell me how dumb of a piece of wood u would need to build open spaces
What you call „I“ beam, we call „Double-T“ 😉
That's one designation we hadn't heard before being used for this section. Thanks for your comment Ron!
@@TheEngineeringHub : Of course, because this is the german name for it! 😇
haha that makes a lot more sense now!
You forgot to compare against the hexadicosihedral beam shape that is stirring up the industry. About 5 times the strength of an I-beam.
Is that a real thing or are you just playing?
@@adammcquillan6455 just playing lol
Would an H-beam has a better capacity than an I-beam?
Not really, or at least it's minimal. But the H beam has it's own uses
I-beams with exceptionally wide flanges (shaped much more like an H than an I), have better capacity to resist loads applied in compression and on their weak axis. Because of that, H shapes are more common for columns and piles than for beams.
The concepts illustrated in this video apply to both H and I shapes. In our engineering practice in Canada, all such shapes are referred to as wide-flange I beams, but the nomenclature varies around the world.
There is more to it than just the distance between the centroids - otherwise web thinning to zero would be stronger.
Hi Frisco,
Of course, you are right, the distance between the centroids needs continuity of material.
Hope you enjoyed our video :)
I was confused when professor says moment of inertia in beams when obviously there is no rotary motion.
Hi Premkumarguttikonda, moment of inertia is also referred to as second moment of area. Actually there is rotational motion, this motion is the beam being bent. You can imagine the curved beam as a section of of a circle with its center somewhere above/below the beam. Check out this picture to see what I mean:
ptgmedia.pearsoncmg.com/images/chap5_9780134859286/elementLinks/ugural_f05_25_alt.jpg
It is a confusing concept, the key is not to think as normal rotation of a rigid body about a point/axis, because it is clear that is not happening. But rather to think as parts of the same body being rotated about their own axes. In this case, if you imagine the beam as a sequence of cross-sections glued together then rotating each section (e.g. section bc on the link) by a small amount (the dashed line on the link) would produce a bent beam. That's where the rotation is hidden.
Think of a truck frame or car frame (1970 and earlier) as it goes over uneven ground the frame will twist and that is your rotary motion. All steel has some degree off flexibility depending on the amount of carbon the iron was mixed with. Example hand railings and wrought iron fences are low carbon steel and easily workable. A drill bit or a bastard file are high carbon and less flexible (if you have ever broken a drill bit you'll understand).
Hi, It is actually 2nd moment of area. It is a property of the section, independant of the material. It is colloquially though strictly incorrectly refered to as moment of inertia because the formulae for the shape is the same as that for a 2D solid boby of the same shape. Rotational motion is not relevant to 2nd moment of area.
In Germany it is called a "Double-T-Shape"
Can I apply the same math to building a home using wood I beams?
Had a 40 ft 1 inch beam fall on my foot brake my leg and I fell 30 ft into a river ..was not tied off .. still here still alive . Norcal piledrivers/bridge builders
Why truck don't use I beam instead of square or c channel
Excellent question and a very good observation. Check out our other video on the weakness of the I beam:
ruclips.net/video/WkLjcKYjwnU/видео.html
This should provide the answer hopefully. Thank for bringing this up cornholio24.
One may ask, "Well, why have the upper and lower flanges, if the strength is in the vertical web"?
Answer: The upper and lower flanges provide lateral strength in the same way the web provides vertical strength.
Hi Ralph,
Yes, you are correct, the flanges provide lateral (or, out of plane) strength, since the flanges are oriented on their strong axis against such loads.
Thanks for your comment,
Cheers
Can someone explain, how the two supposed aircraft. Made from aluminium, sliced threw the twin towers I-beam. Just look at what a bird strike does to an aircrafts wing.
There may not be an "I" in "Team" but I is strong nonetheless.
haha love that comment!
Hi in Scotland we call this a H beam
Then you Scots are calling a sow a cow. There are BOTH types of beams, an H beam cross section LOOKS LIKE AN H with top & bottom flanges that are as wide or wider than the web, but an I beam cross section LOOKS LIKE A CAPITAL I with top & bottom flanges that are SHORTER than the web. A building structure will usually have both types used in different places to meet different load reqirements, you DON'T use an I beam where you need the additional strength & stifness of an H beam, and you DON'T use a bigger & heavier H beam where you can use a lighter & more flexible I beam.
Good old I-beams
That's not an I-beam all the animation was showing what is known as a wide flange H-beam. Look up the difference between I-beam and H-beam and you will understand.
@@thomasglynn2282 I know the difference. Been practicing engineering for many years. The term H beam is rarely used in Canadian practice
@@hafdone6931 I keep forgetting that sometimes I'll be responding to someone that is outside of the US. My apologies and hello from your southern neighbors. Iron workers local IBBE (international brotherhood of beerbottle emptiers)
As an architect, I must point out that most steel structural beams are not "I" beams, but are a shape known as wide flanges. (WF) Both shapes are manufactured, but almost all steel structures use wide flanges, not "I" beams. "I" beams in buildings are not at all common. What's the difference? Note in your video, the shape of the cross section that you show is more of an "H" than an "I". If you were to show a real "I" beam, you would see that the flanges of an "I" are smaller than a WF. A WF has more area in the flanges than an "I" and as your video points out, the more area placed at a distance from the neutral axis, the better the section can resist bending. Nevertheless, right or wrong, I think most people will continue to use the term "I" beam.
Hi Michael, the last sentence is the exact reason why we used the term I-beam (though incorrect). The non-engineers/architects in the audience may not be fully familiar with the term wide-flange. Regardless, the aim of the video was to introduce the theory that guides us to manufacture these shapes (WF, I, H etc). In future videos, we will be more careful with the wording. Thank you for your comment sir; we appreciate the feedback!
I IS THE 9TH LETTER OF THE ALPHBET.Nine symbolizes completion.
Superexplanation
I realy get irutaed at using ONLY newtons or only tones or Lbs.
Coudn't understood nothing except that ' I ' is supirior than anything else. :p
wait until they figure out what flame sweating a beam does, after mechanical forced camber...
We call it H-Beam in norway though
At my place, they call H-beam
Hi Guru, depending on the location this section has different names. But regardless of the name, they all work on the same principle by stretching/compressing the area farther away from the center as explained in this video.
Lay the I beam on the ground and in the center put a block under it to bow it. Next like a bow and arrow, Pre Stress it with connecting a smaller beam under it while it is bowed, and Bolt it and weld it. Build an ARCH. The tensile strength of the taught smaller beam under will give you truss great strength. ruclips.net/user/sgaming/emoji/7ff574f2/emoji_u1f61c.png
For a second i thought I beam , what kind of a product did apple released now 🤔
🤣🤣🤣🤣🤣🤣🤣🤣🤣🤣🤣
It does actually sound like an Apple product LOL
Is not any secret knowledge of I beam strength It is in study subject of strength of materials
The shape is actually not related to the material, an I-beam made out of wood or concrete would still enjoy the same benefits against bending.
you know jet fuel can't melt steel beam
No thats wrong, but YOU don't know that steel beams start out as a LIQUID that is roll molded into shape when it's red hot because it's squishy and has NO STRENGTH & is easily squeezed into OR OUT OF SHAPE when it's red hot
@@billscow bruh it’s just a joke
Many start use H beam
Yes! The term H-beam is used in some places around the world.
Cheers and thanks for the comment
The audio is no good
Thank you for your feedback Daniel, we noted this and are trying to improve in our new videos. (this was the first video of the channel)
Ponder getting rid of the intrusive distracting music! Best of luck!
Yup, music is out in the new videos. Cheers!
Here is an idea ask an AI to find a better shape.
This is not really like a secret but just captain obvious
This theory is OK But do not permit your neighbour Vastu Chap to see this He will interfere his dirty nose and spoil it ask him before hand to get out, Thanks BGRao NewYork Engineer
They are susceptible to Jet fuel 😮
no matter what size they are.
Good video but dump the music.
Thank you for your feedback David! We will adjust the music for future videos.