Ah yes... That 3am content.

@Stinkycillygrwm

5 жыл бұрын

Ha

@GRITBONE

5 жыл бұрын

12:56 am content for me

@tacccobell

5 жыл бұрын

3:44am on the dot

@Drinnan

5 жыл бұрын

I was watching other videos on this channel at 3am, it's now 5:52am and I've arrived

@kanako9524

5 жыл бұрын

Ah yes... That KZread rabbit hole content

So the next time someone says they have concrete evidence against you, you just give them some stress

@macforme

5 жыл бұрын

and tension!

@wasilqayyum

4 жыл бұрын

JoulSA But what if they reinforce it?

@macforme

4 жыл бұрын

@@wasilqayyum If that injures anyone they will put you behind rebars.... sorry...I'll show myself out.

@eric0125

4 жыл бұрын

@@macforme nice one lol

@mansour522

4 жыл бұрын

Tension to be accurate. Compression is still a stress but concrete handle it very well

Another interesting thing to note, you CAN have too much rebar in a beam. Since steel is much stronger than concrete, having too much steel in the tension zone will cause the concrete to fail in compression before the reinforced concrete can fail in tension. Since concrete is a brittle material, this turns the failure mode BACK into a brittle failure, rather than a ductile failure. So the goal with designing a reinforced concrete beam is to have enough steel to have the strength required, but not too much to the point where failure becomes brittle again. Strength AND ductility are both very important

@whatthe9256

2 жыл бұрын

Correct. In other words, having too much steel would result to the concrete structure instantly collapsing without prior warning which would result to hundreds or thousands of death in contrast to having the concrete fail first before the steel which will alarm the people in the vicinity to evacuate before the inevitable collapse since the steel would be able to hold the crumbling concrete first before collapsing

@nickmeale1957

2 жыл бұрын

Would having four steel rods in his structure be overkill?

@Kdot19

2 жыл бұрын

@@nickmeale1957 hard for me to say I don’t have much experience actually designing to know off the top of my head lol. I just had some structural design classes. Also rebar comes in a lot of different sizes so you’d wanna specify the total area of steel in a cross section rather than the number of bars

@nickmeale1957

2 жыл бұрын

@@Kdot19 Interesting

@whatthe9256

2 жыл бұрын

@@nickmeale1957 Four is the minimum for any main structural support like column or beam but for lintel beams and stiffiner columns that support the walls you can have two depending on how high the wall is

In 2016, an earthquake hit Ecuador and was catastrophic to the infrastructure of the coastal side of the country. The reason being was that to save costs, many buildings were built using seawater for the concrete mix. The salt found in the mix weakened the steel reinforcement significantly, so when the stress came, it just gave in. I think this is something worth mentioning. (this theory might be incorrect? I heard it in the news - I am not a professional in the subject).

@henrylam92

2 жыл бұрын

Salt, moisture, and oxygen can corrode metal much worse than rust. So you are correct

@lanes8237

2 жыл бұрын

Chlorides cause corrosion in concrete as well as steel. Bad news.

@pixeldimond

2 жыл бұрын

What an epic failure. To think that they would cheap out on something like that is mind boggling.

@gamelard1963

2 жыл бұрын

i work in scaffolding and all the material that is exposed to ocean air rust really really bad that it makes you think they were sitting there for decades being unused

@JeremyRobertWalker

2 жыл бұрын

basalt rebar fixes that

Recommended: Video games Video games Video games Video games Why concrete needs reinforcement Video games

@yabovax7403

3 жыл бұрын

Jaja

@farizanroslan

3 жыл бұрын

You made the right choice.

@yabovax7403

3 жыл бұрын

@@pierreo33 😯

@Robert_D_Mercer

3 жыл бұрын

It's because of gamers like me who care about the world. ;) (I was forced to do this irl, my brain man....)

@reechard420

3 жыл бұрын

Don't forget somolian pirate videos

"Stress in this case doesn't mean anxiety or existential dread" damn dude you really know your audience hahahaha

@nootaboot7042

5 жыл бұрын

Jorge Uresti *crying*

@pablomarcosreis838

4 жыл бұрын

Hahahahahahahaha

@antonioaguirre3989

4 жыл бұрын

Lmao

@johnlemon273

4 жыл бұрын

that hit close to home😢

@6shadowflame

4 жыл бұрын

Want to like, but 666 is just too perfect

As an Ironworker who installs rebar and post tension cables as well as precast prestressed concrete this was a very informative and interesting video. You did a great job of explaining everything in layman terms for people who don't do this every day. Great video!

30+ years ago at College we had a year long module on "materials". Part of that was making concrete cubes and testing them. One of the lads on the course worked for a concrete company and brought in some extra strong reinforced cubes and the teacher went ape when they didn't shatter in his testing machine.

Remember, just because you're strong doesn't mean you don't need support from others.

@jonathanpruegert3007

6 жыл бұрын

Deep

@fernmccreary2729

6 жыл бұрын

Harun Suaidi whoa dude u blew my mind

@lewisjones284

6 жыл бұрын

Always lift with a spotter

@-mae-5524

6 жыл бұрын

Harun Suaidi DID YOU JUST

@wanted247ha8

6 жыл бұрын

A.K.A the Lebron James effect.

Algorithm out here trying to make people experts on the Miami Condo collapse.

@stephennorcross

3 жыл бұрын

Word

@Cameron.storch

3 жыл бұрын

😂I just watched a video about that whole thing

@culiasnla

3 жыл бұрын

ikr, those engineers knew fuck all about what they were doing, they shoulda watched this video.

@edmundnlemadim

3 жыл бұрын

Lol I was about to mention the same thing 😅

@bishop51807

3 жыл бұрын

I came to the channel after the I-40 bridge failure. I guess the country is literally falling apart.

Ive been in construction for about 3 years now as a laborer and this explains so much. Thanks!

I’m currently in my last year civil engineering degree in uni and these videos are so refreshing … it’s like a revision for me and these are the really basic concepts to always remember

As a special inspector and field technician, part of my job includes making these concrete samples and breaking them later in our lab. I think you did a great job covering this subject. The only thing that annoyed me was that you dropped the 20lb weight into the bucket. It may have held a bit more if you would have gently placed that weight in the bucket or had kept tossing small objects in there.

@person_perhaps

3 жыл бұрын

But would he get his hand out in time?

@alexharkler

3 жыл бұрын

@@person_perhaps Sometimes sacrifices must be made in the name of science.

@ozdagap1809

2 жыл бұрын

@@alexharkler 😂ah. Yes. Sometimes people have to have their bodies dissected while awake in order to further science

@nothinginparticular6419

2 жыл бұрын

@@ozdagap1809 that's a thing it's how the medical field has become so amazing. Anesthesia and sleeping drugs weren't always present. Also if this was already discovered there's no reason to sacrifice your hand lol

@stevenelliott8977

2 жыл бұрын

It also should have been a test to rip that concrete in half, not tear a hook out of it.

“You shouldn’t make a rope out of concrete.” Well said.

@highlypolishedturd7947

4 жыл бұрын

Crap! going back to the drawing board...

@LOLLYPOPPE

3 жыл бұрын

Rope should only be made from rope

@lunchpunchcrab32

3 жыл бұрын

Note: *make rope out of rope*

@diamond_dogs

3 жыл бұрын

Well there go my weekend plans

@LOLmusics

2 жыл бұрын

Anyone know where I can buy a concrete rope ?

This is one the rare videos where I don't even think of skipping. The narration, the illustrations, etc. are perfect (at least for me).

its fun to watch, as an Electrical Engineer, this helps me quite a bit on understanding the basic theory on re-bars..

Man, this reminds me of when I studied civil engineering at uni. I dropped out to eventually become a software developer. Thanks for reminding me why

@danielalvarezleon1004

2 жыл бұрын

lmao

@ngynnhuvy2850

2 жыл бұрын

Dropping out must feel free and horrifying at the same time. I'm so hesitant.

@scout1710

2 жыл бұрын

lol

@joshuaarnold1895

2 жыл бұрын

Why did you stop studying civil engineering?

@jincongdai2982

2 жыл бұрын

@@joshuaarnold1895 i think civil engineering is one of the hardest engineering majors

The algorithm has struck again. RIP to those poor people in Miami

@coredetta

3 жыл бұрын

What happened?

@morenofrank08

3 жыл бұрын

@@coredetta building Collapsed and some people are missing under the rubble but an engineer called it 3 years prior but no one listened

@Bidens_Diaper

3 жыл бұрын

@@coredetta Damn yo, living under a rock

@TurboTroller

3 жыл бұрын

Damn I was wondering why this was recommended, but that makes sense. RIP

@LILDroidDEX

2 жыл бұрын

Lol yep algorithm is working lol. This is good information too.

I am eternally grateful.. I can intellectually capture any lesson naturally I have learned. I used to crave dense dives, but now I’ve fluently conceived anything anyone could possibly openly discuss… (it feels like). I have reached a point I get frustrated if it’s not a really really soft spirit explaining the lesson to me. Your demeanor is an anxiety relief as I refine my knowledge base to a head banging wall level. Lolol. If the lesson isn’t GRACEFULLY carried… I’m thinking the script writer does not passionately understand.. and move on. Understanding something and therefor teaching it is sufficient.. understanding something from Passionately discovering it is the essential teachers we need. The bees knees.

This is amazing, I work security for active construction zones. Most of which are apartment complexes, and sometimes I work one week and see some areas with cracks and do not enter signs, then within a couple the area is all new concrete and looks like it was redone and not just filled in. All my life I thought that cracks were just going to happen no matter what and all that mattered was the wood structure deeper in the concrete.

Material stress is not unrelated to anxiety - at least when having to do the calculations in college

@Anonymouspock

6 жыл бұрын

Dominik Schaefer Tension problems really stress me out, although they aren't a lot of work. Despite this, somehow they still use a lot of energy due to very low efficiency in doing them.

@GoErikTheRed

6 жыл бұрын

I feel ya

@13lade23

6 жыл бұрын

Dominik Schaefer deflection equations, stress transformations are a pain in the ass.

@antoniohugo289

6 жыл бұрын

Same :-)

@PKPJayhawk04

6 жыл бұрын

Cold sweats and flashbacks to structural analysis.

I work in flatbed oversize. Hauling rebar safely, in a timely manner. Is something I take much pride in my work ethic. Great video man.

@GoAndLive

2 жыл бұрын

Wishing you good fortune. An actual essential worker😎🤙

@neoc03

2 жыл бұрын

You guys are invaluable. I always try to help truckers merge, it's the least I can do. So few people respect or understand how vital they are to everything running smoothly.

@outlawedTV88

2 жыл бұрын

Cool. Fun fact. Did you know they found rebars in the Egyptian statues and buildings over 2000 y old?! Yup, scratch your head. So the question is: IS our history fake or did they have some advanced tech back than?

@_Xds_

2 жыл бұрын

@@outlawedTV88 where u here tht my guy? Onion News network?

@markpenny523

2 жыл бұрын

Dkzread.info/dash/bejne/pKto3I-rg9q0mrw.html, it is a video I found online talking about the origins of COVID, and that the video talks about the west is responsible for COVID, I don’t know if it is true but this video was 10 years ago, and it predicted many things that have become true since then. I love America, but I am with humanity if this is true, if you guys can share this it would be amazinesesd

I'm having a new house built and they are doing post tension foundation and now I understand what that means. I appreciate the quick informative video.

I'm not sure why this video came into my recommended feed, but I'm glad it did. Very thoroughly, interestingly and succinctly explained! Thank you for the video!

I'm not a mechanic. I'm not an engineer. I'm not a construction worker. I've never watched a single video about construction or engineering in the past month. This has been recommended in my feed for whatever reason. I love this video and the concept of the channel.

People joke about the “3am content” a lot but it’s nice to see how many of us are simply curious about the world around them. In an age of alternate facts and outright science denialism. Curiosity is more important than ever.

@superchase4106

2 жыл бұрын

Don’t think anyone is denying consistently provable “concrete breaking easier than with rebar inside it”.

@ZethoYT

2 жыл бұрын

@@superchase4106 you'd be surprised with people

@christopherquintero6910

2 жыл бұрын

@@ZethoYT yeah 🤣

@captainhindsight8604

2 жыл бұрын

what about when the scientist themselves disagree, or use correlation and causation, something we were always told to was wrong before. I’m curious af about that

@accelmemory

2 жыл бұрын

@@superchase4106 The flat earthers haven't advanced to that point yet

At 4:36 you expressed very simply what I had in mind each time I was thinking about the way rebars actually work. I thought I just didn't understand. But my intuition was right. Now I understand the world a bit better and that cured my depressive feelings for a minute. Thank you.

I have zero interest in construction. zero. but i saw this vid a few weeks ago (youtube algo) and can't get it out of my head. there is something powerful about a great explanation. it really stays with you. great video.

2:47 You got really lucky to get a frame while the concrete was cracking.

@ndimumnini5894

5 жыл бұрын

or he has a really good high speed camera?

@doctorlarry2273

5 жыл бұрын

video is good at that.

@MrKinir

5 жыл бұрын

"video is good at that." A conventional camera is very bad at that. Unless you're extremely lucky.

@CitroenDS23

5 жыл бұрын

The cheap way is to genlock 3 or so cameras with a phase offset and then use camera output containing the moment wanted. Maybe he had more than one beam? But it isn't that hard at all.

@louf7178

5 жыл бұрын

@@CitroenDS23 "Instant" would have been a better word choice than "moment" in this topic, LOL. i.e. bending moment.

I worked as a CMT and we would stress cables post pour and no one ever explained to me the purpose beyond “the boss said so” thanks for elaborating!

@Fwago1

2 жыл бұрын

That always drives me crazy. I do a much better job knowing WHY I need to do something instead of just being told "because I said so".

@raven4k998

2 жыл бұрын

well the boss says so to maximize the strength of what ever your building with that reinforced concrete

@calebfisher7067

2 жыл бұрын

@@raven4k998 Thanks, we also watched the video.

@3vanguardofthephoenix335

2 жыл бұрын

@@raven4k998 shh guys he works for the boss! Look busy!!! And never question the boss man's authority 🤐 Loool

4 years later, this comes up in my recommended. i understood everything you said, surprisingly. nice video

Have you done an episode on centrifugal force? Specifically relating to centrifugal pumps, you’re incredibly talented at explaining topics and would love to have a video to share with co-workers. Thank you for all you the knowledge and keep doing what you do!!

Think of concrete as the opposite of rebar. Concrete is for compression - not tension, because it pulls apart easily. Rebar is weak in compression, and will bend easily, but great for tension, because you can pull on it with enormous force. Combined together... using the best traits of concrete and steel wire or bar - and you have a great combo for structures.

@yavuzyurur7129

2 жыл бұрын

The exact same lesson my late father taught me .

@isoaxe

2 жыл бұрын

No so. Rebar (and structural steel in general) is very strong in compression too. Don't mistake the fact that (relatively) thin bar of steel bends easily with having low compressive resistance. The reason it bends easily is because it has a low second moment of area, to which deflection is proportional.

@Postermaestro

2 жыл бұрын

@@yavuzyurur7129 where did your early father go?

@kosskrit

2 жыл бұрын

@@isoaxe Theoretically yes, but practically thin rods are prone to losing stability when you compress them.

@Dad_Lyon

2 жыл бұрын

@@isoaxe To put it simply, it's slender 😀 I'm an aero engineer so no concrete experience. Under compression, does the rebar buckle? I don't know if that'd be realistic because the concrete should fail before you get high strain/deflection, but if the concrete could deflect I'd imagine it provides some lateral stability to the rebar.

*Just finishes making concrete rope. “Well fuck, now ya tell me!”

ya da güçlendirmeyip arkasından kader diyebilirsiniz arkadaşlar :) or you can say "destiny" after not strengthened concrete :)

I work in residential construction. This is very good and interesting information for me. Thank you for putting these together.

You do a good job at pulling young peoples attention towards civil engineering, I bet at least one person has been influenced to go into that field by you

@sarowie

6 жыл бұрын

even if people just appreciate the wonder of modern infrastructure and the time scales it spans, he has done something awesome. Infrastructure is such an unloved child of politics - the decisions span multiple election, if not generation and people take it for granted.

@takingbacktheplanet

6 жыл бұрын

Around 30, haven't decided what I wanted to do yet because so many domains interest me and I have not had pressure to make that kind of choice yet, but I love every video this guy has made to date basically and his rather casual and intimate approach to the subject (the topics of which would actually be quite dire in terms of consequences if there would ever be, uhm, catastrophic failure I guess is the term? ;) Always looking forward to next one!

@sasori144

6 жыл бұрын

Connor Hyland he's very informative and opens up alot of doors cool channel

@TheMultipower47

6 жыл бұрын

I don't have much interest in civil or structural engineering but I still thoroughly enjoyed this

@TegustaVon

5 жыл бұрын

I'm late, but I do love the thought of it. However, I've already made up my mind into being a mechanical engineer.

I do pool construction, it’s actually pretty crazy how we bend and shape the rebar to reinforce the pool before putting concrete

@bjarkimar4110

2 жыл бұрын

We use it here for decades in every type of construction ,iceland

@DoseOfJapan

2 жыл бұрын

Just 10m. Super easy

@glenchaos9

2 жыл бұрын

@@DoseOfJapan 10m? lol, well what we use 3/8 #3 & half inch #4 for pools, half inch for the beam but yes it’s easy if you know what you’re doing lol

@ACTUALLYRICH

2 жыл бұрын

I work in civil engineering inspection and testing, and it always amazes me finding out what I’m testing (if I haven’t sampled myself personally from site) for what project to get the bigger picture of the scope of work.

@thegman4759

2 жыл бұрын

Yeah I guess it's cool till you work with it everyday then it'd just a pain in the ass I build foundations and I hate rebar absolutely hate it

LOVE this! So cool and informative. I always wondered why they add that metal grid into concrete sidewalks.

this is one of the most interesting and educational videos I have ever watched in here, practical application! I want more!

This might be just another comment on youtube, but I really wanted to say thank you for making these videos. Since I discovered this channel I've been really enjoying watching them. Wish you were my teacher in college, but here you're teaching with ease the basics about some complicated topics to thousands or millions of people through the internet. Thank you.

Nice video. Also to add: Concrete beams that pass over columns need to have more steel at the top due to tensile stresses occuring over the column. It is also important to note that steel structures alone are not fire resistant (they deform with heat etc) so the concrete cover acts as fire proofing. However, not having sufficient concrete cover over the steel can affect this and can also cause “concrete spalling” if moisture penetrates cracks in the concrete and cause corrosion. Concrete spalling is when the concrete face is pushed off due to expanding steel as a result of excessive corrosion/rusting. There is constant research going on now to find ways to protect the steel with additives mixed into the concrete during casting.

@Joelsmediahere

2 жыл бұрын

Wait what? Is this how that building on 9/11 fell apart ? Without warning?? 😭

@Stephanie-gm6ue

2 жыл бұрын

@@Joelsmediahere no what the heck? it fell because a planed flew right into it.

@Joelsmediahere

2 жыл бұрын

@@Stephanie-gm6ue oh well I was referring to building 7 😅

@Stephanie-gm6ue

2 жыл бұрын

@@Joelsmediahere huh?

@mnomic8371

2 жыл бұрын

The problem with the world trade center design was the outer wall panels and the floor joists. Once the central columns were compromised, the building lost its strength in the impact area and as the outer wall panels moved outwards the floor joists, that were supported by the wall panels, fell onto the level below. The design was to allow maximum open-plan office space without having columns everywhere. But the terrorists knew exactly where to hit to destroy the main central column.

Very simple and well illustrated explanation in a few minutes. Maybe i should recommend this video to some of my former lecturers (civil engineer here).

This is a most perfect video. You explained this better than many an engineering professor! Thank you.

Great work

@slowhand8219

3 жыл бұрын

ooke

@alimirzatv2293

3 жыл бұрын

i subscribed 2 you, now u hav 1.8 million subs nice!

@crow5228

3 жыл бұрын

nm

@MrBlackHawk888

2 жыл бұрын

A concrete comment. +1

As you can see, this man is clearly an Engineer. He solves practical problems.

@kamikaze3124

2 жыл бұрын

I dont see him using gun tho

@radiobehemoth9334

2 жыл бұрын

@@kamikaze3124 This problem doesn't NEED more gun tho...

@kamikaze3124

2 жыл бұрын

@@radiobehemoth9334 there is no thing as enough gun

@CyberHo4X

2 жыл бұрын

* me Proud as an Engineer“

@radiobehemoth9334

2 жыл бұрын

@@kamikaze3124 That is true.

I did not expected this video to be so amazingly complete

I knew rebar was a reinforcement for concrete, but I never knew how or why it worked. This was very informative; thank you!

@ashallama223

Жыл бұрын

Nope. How come a long rebar which sags under its own weight be a any help for reinforcement

@rpgcraftsman520

Жыл бұрын

@@ashallama223 Did you even watch the video?

@ashallama223

Жыл бұрын

I can make video that can convince anything. This is a question to ask anyway.

Hi just wanted to drop a comment saying i watched this video last night to understand more about reinforced concrete for my exam the next day..and guess what..i could answer a question by remembering this video and its content..thank god i stumbled upon your video...keep it going and thank you so much

@mikesergo4471

5 жыл бұрын

Great 👍👍

@anisizzati6492

5 жыл бұрын

Never thought I would find you here HAHAHA

@operatorjewski9450

4 жыл бұрын

Same

@mansour522

4 жыл бұрын

There is nothing very special in this video tbh that just reinforced concrete 101 first week

@ibeenlucid7627

4 жыл бұрын

Mansour mohamad doesn’t mean that it is not helpful 🤷‍♂️🤷‍♂️

"You shouldn't make rope out of concrete" I rarely feel comfortable promising to take a piece of advice but this one seems easy enough to keep.

@kainebishop3970

5 жыл бұрын

@San the Man Seeing this is like finding an easter egg in a video game

@milat4351

5 жыл бұрын

@San the Man lmao

@MrBlackHawk888

2 жыл бұрын

Such a verbose expression instead of "Thanks for advice". I will save it for later use.

This is an awesome video, thank you for the visuals!

Showing the sponsor ad at the end is what got you a new subscriber

Never in my life did I think concrete would be fascinating! Well done. Very impressed by pre-stressing - what a brilliant innovation!

I teach a beginning Engineering Principles class. My students have been studying this exact topic for the last week. Tomorrow they are going to make small plaster beams that will span 1 foot. They will be able to add sand, rocks, fiber, glue, cable, wire, fiberglass grid, etc. They even have the choice between plaster of Paris or dental plaster. There will be 2 winners, the best strength to weight ratio and the best strength to cost ratio. I plan to use your videos for next year, keep up the good work. I will post a video of some of the student designs soon. Also, if you are ever in the SLC area, I would love to have you as a guest speaker.

@baileetalbot9376

6 жыл бұрын

Love this comment

@sankalp7135

6 жыл бұрын

That’s so nice.

@TheMrByrom

6 жыл бұрын

Here is the video of my students breaking beams. kzread.info/dash/bejne/epecxdGbfsSecaw.html It is a long video due to lots of beams. You don't have to watch all of it to see how different mixes and reinforcement can change how strong it is and how it breaks. The record was 705 pounds.

For 20 times in a row I’ve been suggested this. Now I finally watch it.

@rudellius

2 жыл бұрын

I've already watched it and it just showed up on my front page again

Suddenly feel compelled to learn again. Excellent production.

I'm almost certain that these videos are aimed at a young audience but every video I see is captivating. Lucky I don't have to do the hard number crunching that really makes things tick.

@fprintf

6 жыл бұрын

I've shared these with my daughter who is a Sophomore of Civil Engineering and she finds them very interesting and helpful despite their rather basic subject. It is a nice way of understanding what makes CivE and materials science useful.

@nc3826

6 жыл бұрын

Y u dont think can teach an old dog new tricks?

Hey, I have just started watching your videos. I am a building supervisor and commercial diver and I have really found your videos informative and easy to watch. You have done such a good job of covering important aspects while not overloading with information given the relatively short time you have to explain a topic. Awesome job

Informative, appropriately simplified and well explained. Nice! 🔥🔥🔥

i loveee your videos and the efforts you do to demonstrate them are sooooo appreciated for us learning online

I've been a concrete finisher for two years now and this was very interesting to learn. Thanks.

@shen1801

2 жыл бұрын

I have never worked with conrete in my life, and it was still interesting to learn!

@ajtg3807

2 жыл бұрын

@@shen1801 if you do WEAR GLOVES! Over the years concreting has made my skin terrible

@CErra310

2 жыл бұрын

should I be concerned?

Well done. Reminded me of the Hyatt Regency walkway collapse even though concrete was not at fault. As a city inspector/engineer I had to closely watch contractors who often didn't follow design specs, cut corners and lackadaisical engineers who verbally authorized changes without engineering reviews and change orders. Getting my life threatened by a unscrupulous contractor isn't fun.

@treeguyable

4 жыл бұрын

Isn't it great, when some inadequate coward tries to feel superior, by threatening, lying. They are everywhere.

@wadesworld6250

4 жыл бұрын

The Florida International University bridge collapse was an exact demonstration of these forces and failures.

@Eugenepanels

4 жыл бұрын

Threat is taking it way to far that sob needs to be taught a lesson as to what happens if u do that

@whatyousaidbud

4 жыл бұрын

@@Eugenepanels the trouble is, the person handing out threats is the one who access to large holes that get filled with concrete, if you catch my drift.

I don't know why KZread recommended this, but now I have new knowledge about concrete.

This has been on my recommended for a week. You convinced me, I'm watching.

What happens over time with rebar rusting and "vanishing" inside the concrete. I know today rebar comes with a plastic shroud to keep moisture out, but the nature of manufacturing causes nicks in the plastic. A fascinating picture I saw was in road construction from the 60' compared to days of road work; the amount of rebar in a raised road support than in now is 90% more. I do enjoy your channel. Thank you for producing them!

@Kdot19

2 жыл бұрын

Rebar generally doesn’t rust inside of concrete because there isn’t oxygen available for it to oxidize. Actually, the reason rebar usually is embedded about an inch inside a beam rather than it being on the surface, where it would provide the most benefit in terms of reinforcement, is because that 1 inch of concrete is meant to protect the rebar from weathering. Like he mentioned in the video, the concrete has to crack for the rebar to have any effect, so when designing a beam like the one shown, the structural engineer actually ignores any capacity that 1” concrete cover may provide and uses the capacity of only the steel by itself, so it is actually purely to protect from things like weathering and fire.

@alphaprecastconcrete5397

2 жыл бұрын

@@Kdot19 I'm glad to see that there's people still out there that know about concrete.

@Kdot19

2 жыл бұрын

@@alphaprecastconcrete5397 I had two classes on concrete and steel design this stuff was like carved into my brain lol

@gojtron

2 жыл бұрын

kzread.info/dash/bejne/goB6k5qBaa2teNY.html

@grahamhannah2108

2 жыл бұрын

Steel can rust from the old practice of adding calcium to the concrete to cure the concrete faster. The calcium eats away at the metal causing failure of the concrete.

Congratulations on 500,000 subscribers! Your videos are awesome!

@gorillaau

6 жыл бұрын

HJCF0520 On to the next 500,000.

Thanks for the video mate! Had a great time watching this with my dad!

Very interesting, thanks for posting. I've often wondered about some of these things, now I know a bit more

I'm civil engineer and still enjoying this video.

@saicharangarrepalli9590

5 жыл бұрын

What do you mean "still enjoying it"? You would enjoy it more if you are a civil engineer.

@anilkumarsharma1205

4 жыл бұрын

are you able to produce the energy from atmospheric pressure by using a large scale android's barometer means big modal of android barometer ,say a kilometres diagonal large area could produce 27kilowatt energy per day

@liammiddleton3064

4 жыл бұрын

Hey what titanium rebarb in sted of steel?

@yusufy4743

4 жыл бұрын

Yeah.. You should

@brokenwave6125

4 жыл бұрын

That's like saying, I'm a chef but I still like watching the Food Network... Yeah...obviously.

Hey in not an engineering major or really care about the subject, but I love the way you explain these topics. It's super engaging and I actually find myself looking forward to learning and seeing what you have to say. Thanks Grady!

@Nafeeshomedesigner

6 жыл бұрын

yeah right sophia

@Nafeeshomedesigner

5 жыл бұрын

Sophia give me your social contact

@Nafeeshomedesigner

5 жыл бұрын

Tell me sophia

@syedibspk8418

5 жыл бұрын

Can you upload a detail leacture on foundation plan for steel structure

@hypercuriosity9828

5 жыл бұрын

CIVIL WORLD bloody pervert

Brilliant video. Thanks for sharing your knowledge and findings.

Working as an Industrial Climber that helps out building my bosses "concrete bunker" as we like to call it has me really interested in these types of videos often times, I knew pretty much everything but since I am German I find it fascinating learning these things in two languages.

Interesting. I don't know why YT recommended this for me, but it's quite interesting. The practical demonstrations are great. Great video.

I just got done learning how and where to space rebar in reinforced concrete in my theory of structures classes next semester. I love this so much

Your voice is soooooo soothing and relaxing, it's like i am learning while relaxing

Such an informative video, visual and auditory learning mixed w diagrams and stuff, absolutely perfect video, very interesting

I have money for a shirt that says "You shouldn't make rope out of concrete".

@MikeHarris1984

6 жыл бұрын

I second that! This shirt must be made!

@simoncollins2574

6 жыл бұрын

There are so many good quotes from his videos my favorite is ""engineers generally try and avoid building civil structures out of liquids." From the quicksand video. I would love either of these on a shirt

@OmarBKar-sw1ij

6 жыл бұрын

Or "every time you say cement instead of concrete an engineer's calculator dies" this one in my favorite

@OmarBKar-sw1ij

6 жыл бұрын

I'd pay 100 bucks for it

@computer5272

6 жыл бұрын

"a length of strong cord made by twisting together strands of natural fibers such as hemp or artificial fibers such as polypropylene." You're correct but for the wrong reasons. Way to go.

This stuff is really cool. I wish I learned about this type of thing when I was younger. Getting to see what everything around us is made out of makes the use cases of applied math and science very apparent.

I do not know why this showed up on my recommended, I've never watched something even remote to this, but thank you, it was very interesting

I wake up and randomly think to myself how much rebar matters in a structure....and I watch this video and learn more in 8 minutes than I have the last 10 years lmao. Who knew this could be so interesting? Great vid my man.

I love KZread and am thankful for people like yourself that make these videos. I didn't realize how complicated concrete was.

I would love to see more types of concrete in the next videos, like mixed with resin, fiberglass and others. Thank you for this series!

I’ve seen these video on my recommendations so many times I’ve been able to keep track of views from about 3 million till now

I appreciate your efforts in the experiments. It was very interesting

You're like the awesome engineer who's amazing videos would draw us all in during science, someone get this man a movie deal asap.

You've answered questions about concrete I didn't even know I had. Great video.

I can't get enough of your content thank you

Love the content. Also, the background track is dope 👍

Grady, thanks so much for all the prep work you do for your videos. I have learned so much! When I was a child, my dad decided to add on to our home. He decided to use cinder block instead of reinforced poured concrete for our basement walls. (Rebar = reinforcing bar) Unfortunately, I spent the rest of my childhood bailing our basement out every time it sprinkled outside. The water sprayed through the cinder block like hundreds of shower heads. When it rained, my older brothers would run around with a pencil and circle all the streams to later go back and smear on this water proofing paste used specifically to waterproof cinder block. If you're wondering, no it didn't work.

Police officer: Help! I need reinforcement! Steel manufacturers: hold my beer.

@ThamizhanDaa1

3 жыл бұрын

Hold my *rebar

@punker4Real

2 жыл бұрын

Chinese rebar is like using play doh

This is actually really interesting, something I’ve never thought about till now

Great video: instructive, clear and fun.

Great. NOW I see this. I just spent a fortune on concrete rope I no longer trust.

@PipeScholar

5 жыл бұрын

:'D

I really appreciate your knowledge and that you are willing to share with those of use that don't have an engineering background. Thanks.

Very knowledgeable about concrete. Not sure how I got to this video but very informative!!!

Very good, well informed video. Nicely done.

I had almost no interest in these subjects before watching the video, but this was a great explanation and introduction, i learned a lot and loved your video, great content man, you're great!

This answered a lot of the questions I had about concrete. I still have a ton more! Thank you so very much.

@erics.2362

5 жыл бұрын

Ask your questions, I should be able to answer most of them.

@janisbanis6882

4 жыл бұрын

@@erics.2362 can you sink in concrete

I'd love to see you go into detail on steel fiber reinforced concrete, the benefits and limitations

I really like this series about concrete. I didn't fully undertand the chemical reaction yet. If you happen to make another concrete video, some sort of animtion (even pencil and paper) would be nice.