Get 20% off your first monthly box when you sign up at bspk.me/how2 and use promo code EVERYTHING20 at checkout!

@mobiousenigma

3 жыл бұрын

as always thanks for the videos. im impressed at your level of preparation and skill for this video in the past you efforts were uninspiring while this is a functional usable product where you have used the beginnings of an assembly/production process where if you scaled time and cost could come up with a meaningful value for the product. and you have produced a product that was marketable and of market quality.

@dildoshwagins2222

3 жыл бұрын

Damn I’m pretty sure your supposed to use river rocks instead of gravel

@sarchlalaith8836

3 жыл бұрын

Roman concrete was also compacted, and had chunks of terracotta tile. I think there's too much lime in your mix and perhaps pumice is less effective than actual volcanic ash?

@mobiousenigma

3 жыл бұрын

@@sarchlalaith8836 lol the pumice would have been used as an aggro ate like we use gravel today , it was used in the pathanon in its upper dome areas because it is lighter . modern portland and ancient roman concrete are different and have different properties granted they both when hydrolyzed complete there chemical reactions and leave a coherent solid mass which continues to harden . sand and aggregate ..whatever was at hand broken tile was fine as was shell its a filler for the cement to bind . as for the amounts and proportions its like baking the recipe changes a little from cook to cook and day to day so as long as it sets theres not too much or not enough of any one component its cost or its strength or its time to cure are what drives the proportion requirements

@sarchlalaith8836

3 жыл бұрын

@@mobiousenigma? Did you watch the video? He used pumice in place of volcanic ash and yeah, everyone tweeks things, true fact. Compacting did increase strength though, not unlike pise, and it's thought that the tiles adsorb excess moisture. Anyways, have a great day.

The professionally made red brick was at a bit of a disadvantage since you had it resting on a small stone in the back, creating a pivot point and a good place to snap. If it were laying flat I imagine it would have stood a better chance at breaking until higher pressures were applied.

@dillonvandergriff4124

3 жыл бұрын

The wood wasn't really given a chance either. He crushed it in it's weakest dimension.

@markhep

3 жыл бұрын

I though the same. The test were not true as some brick were definitely focusing on one small point. others were perfectly flat spreading the load. So hard to tell the strength really. Great video though love this stuff 👍👍👍👍

@CraftsmanOfAwsomenes

3 жыл бұрын

Axe test in the previous episode was also kind of... unscientific is what I guess the term would be.

@zyanidwarfare5634

3 жыл бұрын

Yeah I noticed that too, big sad

@richardhortle3414

3 жыл бұрын

The error he made when trying to compare the force needed to destroy each type of brick was termed "point loading". In order that the different breaking strengths are ONLY due to the nature of the material it is essential to apply the force over an identical area of the specimen AND have a sample preparation procedure that ensures the force is applied evenly across that identical area. A small stone (e.g. a piece of the aggregate used in the Roman concrete) lying either under the top plate (between the pressure plate and the brick) or beneath the specimen (between brick and table) will produce erroneous results if it resists crushing for even a short period. Such point loading means all the rams force is directed at a very small area of the brick's surface (a very high pressure > the apparent final breaking pressure) causing the break to fail before it would have.

This series is like Journey Mode in terraria, where you have to get X amount before unlocking an infinite supply

@ziocrielo6148

3 жыл бұрын

Yeah

@therealArchmageTeslar

3 жыл бұрын

I actually prefer Master mode to Journey mode, because of the challenge.

@KainYusanagi

3 жыл бұрын

More like Journey Mode is like HTME, considering how old it is. :P

@therealArchmageTeslar

3 жыл бұрын

@@KainYusanagi yeah

@Alsry1

3 жыл бұрын

@@therealArchmageTeslar if you want difficulty, play in journey mode with 2.95 difficulty, same damage and more Hp as master mode with none of the benefits of master mode

Lesson #1: Don’t use round rocks in concrete. Roman cement is not used for its strength but its resilience to weathering as it cures over 30-50 years. A crush test is testing the wrong property.

@ClokworkGremlin

3 жыл бұрын

If the cure time is measured in decades, a crush test of months-old at most concrete is also testing on the wrong timescale.

@Hundura

3 жыл бұрын

I was looking for this comment. I was going to say the same thing. A crush test for Roman concrete after such a short cure time doesn’t showcase its amazing properties and potential. Roman concrete continues to cure and strengthen over much longer periods of time.

@bamjo8750

3 жыл бұрын

Round river cobbles were used in concrete until at least the 1960's. They are not as good as angular aggregate for high strength applications, but for many structures round rock is 'good enough'. I just worked on a highway bridge built in 1961 with a river cobble concrete mix that is holding strong after 50+ years of heavy truck traffic.

@tanszism

3 жыл бұрын

there is no real point to buildings standing for that long. that is just wasting the land of future generations.

@Slouworker

3 жыл бұрын

@@tanszism you must be American

As someone who tested concrete for a living, I really wish you would revisit this using a modern testing lab and the advice of a professional engineer as to how to make your samples, and how long to cure your concrete. Modern concrete is designed for a 28 day ultimate strength but it will continue to gain strength (asymptoticly) for 56 years or more. I would be pleased to collaborate with you concerning modern and ancient building materials.

@talyn3932

2 жыл бұрын

Cob also takes 1-2 years. Nothing was really given a fair chance here.

@simonesmit6708

Жыл бұрын

That would be very neat to watch

@reluctantheist5224

Жыл бұрын

Noooooo. I don't want a pro helping !!I love the amateur nature of this channel.

@TBButtSmoothy

Жыл бұрын

​@@reluctantheist5224 amateurs are about learning, as this channel. im sure he would want to know if he rlly likes knowledge

@shikhag5326

Жыл бұрын

Hi, I would like to get in touch with you as I am looking for organic cement materials for my project. Will look forward to your reply. Warm regards Shikha

I remember reading that the seawater is supposed to be used when making, not as a later soak. Can you try that recipe too? I'd love to see what happens!

@KainYusanagi

3 жыл бұрын

It's both; seawater soak after the fact continues to make it even stronger.

@sevandor

3 жыл бұрын

@@KainYusanagi do you remember a source for that? I've never heard this, roman concrete is a weird love of mine, and I wanna read it!

@wyattmurphy7153

3 жыл бұрын

When you use that method it can become stronger then concrete

@kyidyl

3 жыл бұрын

That’s what I was going to say. The secret to Roman concrete is using salt water while making it.

@TheHeroPercy

3 жыл бұрын

@@sevandor there was an article a few years ago discussing that the recipes for Roman concrete discuss using “common water” as it translates. And that for year they just assumed it meant fresh water but then the realized that with fresh water still being a precious resource during the Roman times that it must have meant the far more abundant and undrinkable salt water. After some experiments it was showing to be significantly stronger than previous tests using fresh water and even some modern concretes

You: makes a bulletproof chest plate without even trying Me: looks for my phone while im holding it

@JavaBum

2 жыл бұрын

That's awesome.

The version I read fairly recently (not sure where, though) was that the water they used for Roman concrete was seawater.

@kbee225

3 жыл бұрын

Why does that help?

@RedKrossSquad

3 жыл бұрын

@@kbee225 Makes the seawater and Volcanic ash reaction happen before you expose it to seawater. + it will be more than just the outer layer that gets the benefits from the reaction.

@EmmaAppleBerry

3 жыл бұрын

Yeah ive read/heard that too at some point maybe a documentary or something...

@John-lx8iu

3 жыл бұрын

I was about to say the same thing but see you beat me to it. I can't remember where but remember someone doing extensive studies to eventually determine that seawater was most likely used and then they tested the same recipe with regular water and the seawater one was considerably stronger

@morrigankasa570

3 жыл бұрын

I heard somewhere that Roman Concrete for the bathhouses also used a little bit of clay when mixing it together.

thumbs up 13:35 - materials showcase 13:41 wood ~4800 psi 14:01 cob ~180 psi 14:20 sun dried brick ~220 psi 14:40 fired brick ~250 psi 14:58 professional modern brick ~500 psi 15:19 plaster ~160 psi 15:53 stone ~1000 psi 16:00 roman concrete ~1200 psi 16:47 modern concrete ~2500 psi

There is a chapter about roman concrete in my school latin book lmfao

@jincyquones

3 жыл бұрын

Ecce Romani?

@turencmpressor4152

3 жыл бұрын

tbh, latin is so useless nowadays they might as well discuss different types of shit in those books

@ximarre5121

3 жыл бұрын

@@turencmpressor4152 barbare...

@kizkogr7881

3 жыл бұрын

Now... your ass is gone

@danc101

3 жыл бұрын

Caecilius est in horto

i wonder what crap he will have to go through when he gets to the steam area he will have to build a fricken train XD

@vysakhak191

3 жыл бұрын

I hope he doesn't make a Heron's engine (aka 'aeolipile') and call it a day. I would like to see something atleast similar to a oscillating cylinder engine.

@krungstar4541

3 жыл бұрын

@@vysakhak191 followed by a pulse rocket made with that crappy bronze knife :)

@drk5orp-655

3 жыл бұрын

You mean "go through"?

@mobiousenigma

3 жыл бұрын

the greeks had a steam engine the concept is simple but the materials and sizes for "trains" requires metal work and machining . the first engines were for water pumps and were hand forged wrought iron things more related to a pressure cooker than a train

@MORNINGSTAR827

3 жыл бұрын

@@drk5orp-655 yea my english kind sucks its not my main languge

The pozzolan ash was used for the underwater concrete they used. For the above ground concrete they used specific types of ash ( harena fossicia and carbunculus) that had to be freshly mined to make sure it was chemically active. You can try to calcine the ash you have to see if you can get a reaction. The aqueducts were lined with one part lime to three parts testa- underfired clay tiles milled to a powder. Essentially calcined clay that contained a sodium or potassium containing mineral used as a flux.

Doctor stone this week was awesome

@kheivin8211

3 жыл бұрын

Yes and l learn about Medusa

@gavinli1368

3 жыл бұрын

Chrome got that Yo guy so good!

@electron2219

3 жыл бұрын

It was *elegant*

*In addition to your chosen ingredients, "Roman Concrete" might have been made with salty sea water And VOLCANIC aggregate material. Some claim that the layer of play-do consistency blend was added in layers and into each layer the workers pounded up to fist sized volcanic stones ... then the next layer of mortar mix was pounded in such a way as to fill the pores of the volcanic stones. This layering continued until the desired size and shape was complete.*

When you revisit the cured Roman concrete brick I would also see a clay brick that was fired broken back down and mixed in with a new brick, then refired. This was a common practice Where you would use failed bricks that were ground and reused. They were supposedly a lot stronger.

@WulfgarOpenthroat

Жыл бұрын

Yeah, they mentioned using crushed fired clay as a strengthening agent previously but somehow misunderstood and thought it was only applied to the surface, not mixed in.

10 weeks later: "In the 1960s they used this kind of primitive tools to shoot a man to the moon. See if we can reclaim this ancient technology for our own moon mission!"

He needs to redo the factory brick test- it was sitting on something that caused uneven pressure, and premature failure.

So one thing you can try for your concrete is using aggregate with sharper edges rather than smooth and soft, because it will help it to lock together better and be stronger. Also it looks like your concrete was a little dry maybe.

This is one of those times my local city comes into play as I live near Bath in the UK that has one of the only Roman Baths that still stands today. Thanks to this invention.

@alfredorotondo

2 жыл бұрын

*laughs in Pompei*

@talyn3932

2 жыл бұрын

@@alfredorotondo Careful, or you may lose your head like it's namesake. :P

@alfredorotondo

2 жыл бұрын

@@talyn3932 no worries I don't live in Pompei, I went there only twice I live in sicily, only near the highest active volcano of Europe

Naturally occurring porous glass! That’s so cool! Modern concrete additives also includes low density glass micro bubbles that helps make it light. You can even build a canoe out of this special concrete!

For everyone hating on the methodology here.. it's fine. Certainly good enough for a qualitative test of different materials. What they are using here isn't that different from ASTM C39. In construction we test concrete specimens after 28 days of curing, and that is good enough for the bridges we drive on and the buildings we live in. As a a broad comparison on youtube, I think these guys did a great job.

it is alwasy beautiful when you return home after 7 hours of school (next week there will be 9) and find Andy welcoming you home with a new video, and more importantly with a topic you like. Thank you.

@masondipperpines5009

3 жыл бұрын

I have Online School

@shadow13kill

3 жыл бұрын

I graduated.

@MrLins-wv3tg

3 жыл бұрын

@@masondipperpines5009 We go school 2 times a week online and 3 times a week in person, and i think is BS

@Rugiball

3 жыл бұрын

@@MrLins-wv3tg i am remote

@masondipperpines5009

3 жыл бұрын

@@Rugiball i said this

30 years from now: "today we Will make a GPS satellite, and launch it into orbit"

Nice to see you back in action with the traveling and doing stuff more! Cool to see

I thought what made roman cement unique (stronger) was the addition of salt, which formed a type of crystallize structure that reinforced the cement and made it more resilient?

The beetle part was really nice. Thank you for that.

This episode reminded me of that time in class when a concrete cylinder exploded from the pressure of the press. Kinda nervous with him just sitting next to it like that without a shield.

i truly love that you put a timer on your sponsorships, you're the best about that

Liked the style of this out in the field and talking about the history of concrete etc. nice vid

In Practical Engineering video about Roman concrete, he says that the biggest problem in modern concrete is the amount of water and the using of steel structure, which deteriorates the concrete overtime. Another thing Romans used to do was to put concrete under pressure and relive tension, that's one of the reasons why they build huge monuments.

@randomcow505

Жыл бұрын

we still do that, its called prestressed concrete

@cynthiaaiken2424

3 ай бұрын

@@randomcow505 the Seattle space needle is made from prestressed concrete. It had a fail. Designed by a guy named Holmquist. he was a friend of mine’s dad. My friend is no slouch in the BRAINY department, either.

@randomcow505

3 ай бұрын

@@cynthiaaiken2424 uhhh cool?

So when are _you_ making a steam engine car? XD

@razor-wd2pc

3 жыл бұрын

Im waiting for a hydrogen powered car which would solve fuel problem

@yay468

3 жыл бұрын

Honestly 📠

@Nicolas-lo8db

3 жыл бұрын

@@razor-wd2pc it would not since hydrogen is produced with electricity. which is reliably produces with fossil fuel.

@hioyua650

3 жыл бұрын

Cant wait!

@black_rhino241

3 жыл бұрын

@@razor-wd2pc the way hydrogen or water fueled cars work is through electrolysis but the thing is you use more power to split water molecules apart then you get out of it

Ikea bags are ridiculously sturdy and I am glad to see I'm not the only one who's noticed this

I love this series so original and interesting keep up the good content ! 👍🏻

Awesome video man keep up the good work. I'm always fascinated by your projects and stuff you make.

Dr stone and htme is the same mission from starting from scratch

I am so fascinated by this. You've got me hooked!

Again great video! I love the doodle eyes running joke :D. You guys and gals are awesome! Keep up the great work

Ive been watching your channel for around 2-3 years now and I absolutely love what you guys do. I know you get hate all the time, but I learn more and more every video. Keep up the good work!

Asari gen: Honey bake it Honey okay I understand. Making plastic in stone age

@D_oktor

3 жыл бұрын

That was tungsten toothpaste, cook the powder in sodium hydroxide, add sea shells, hydrochloric acid and ammonia to crystalize it then bake it and mix with honey xd

Thank you for the great videos. Makes me really appreciate the most simple of things.

Oh man, i'm so excited for the upcoming projects now that you can make concrete!

Yes, dr.stone fan yes!!

@akabami2161

3 жыл бұрын

just watched it the third time

Thank you for gifting me this video. I finally can explain and understand why concrete works. :) But with your video I have a way to communicates this better to my future students :) Yes I am gonna make them mix concrete :) And then we will use them as safety plates for experiments. ^^

@cameronknowles6267

3 жыл бұрын

You sound like an amazing teacher

@gavinli1368

3 жыл бұрын

You might want to check out the Practical Engineering channel. He has an excellent series on concrete too.

@kyrionbookshield2205

3 жыл бұрын

@@cameronknowles6267 haha I am still on my way to bachelor. ^^' but I have a goal in sight.

@kyrionbookshield2205

3 жыл бұрын

@@gavinli1368 I will do that. Thank you :)

@alfredorotondo

2 жыл бұрын

@@Mrwaffleandmilk as an Italian I'm even more confused because cement in italian is malta cementizia or simply malta (yeah like the country) and concrete is cemento

The sponsor segment is actually interesting, I watched the whole thing without skipping. 👍

I would love to see you remake it in light of the new discoveries about roman concrete regarding them using quick lime.

This channel is way too underated.

Them googly eyes are a nice touch!

Love that short clip of a Dash 8 Q400 Crosswind landing @ 0:23

I id just like to say that this dude is awesome he has made so much progress as a person since this has started and has gained so many new skills doing so it, i dont think making new goals for yourself is easy but dang this dude does it all the time for that gg

0:18 It could also be said that we live in the Glass age, as Glass is used damn near *Everywhere* ... Hell, there is more glass in the windows of a single skyscraper than there was produced throughout the entirety of history up until like the late 1800s.

@EmmaAppleBerry

3 жыл бұрын

That just blew my fkn mind so ta for that 😂😂😂 this is like the rime someone told me there were more dead people than alive no matter how big the population gets. Which i mean is obvious af but like you dont think like that so when its pointed out its like super spooky and you cant unknow it.

Mans gonna make a biplane soon enough

The comparison to also the modern stuff is extremely cool, so we can see directly how it comes up

I feel like we're watching a real world version of a video game progression with your channel. "Congratulations you've unlocked concrete"

Hi there

@lillywerk4642

3 жыл бұрын

Hello

@josetelles6536

3 жыл бұрын

Howdy

@thesultanpepper9413

3 жыл бұрын

Ello

Remember guys: lift with your back.

@jamescanjuggle

3 жыл бұрын

Manual handling is a must, no point wearing down a great tool like our body faster than need be

You are awesome as always!!!

best channel on youtube. would be curious about concrete made using baked shells, lots of oysters here in the PNW

Edit: not a "fun fact" because people are no fun, and now I shall call it a "fun opinion I heard" Fun opinion I heard: I recently heard an argument stating that the limestone blocks of the pyramids were maybe poured, not cut. Wut.

@christophersnedeker2065

3 жыл бұрын

Not how stone works

@buckadillafilms

3 жыл бұрын

It's a very compelling argument!

@Bolognamonster

3 жыл бұрын

It’s not likely due to limestone cracking on its own In such large ammounts

@D-Vinko

3 жыл бұрын

You mean fun opinion, There's no evidence of that. Literally every stone I've ever seen from the pyramids has clear chisel marks. Who told you this?

I know its probably been said a million bajillion times..but man this series is awesome. I would say its "TV" quality but that almost feels like an insult. Keep it up man!

NOW the fun is starting

"Welcome to the hydraulic press channel..."

@seirramoon388

3 жыл бұрын

Today we will be testing this brick to see how well it holds up, ready?

"The plastic age" is the saddest thing I've ever heard. 😆

@StoicNatsoc

3 жыл бұрын

only because humans of lower iq in various states around the world pollute their environment. Plastic in itself is a magical compound, lasting centuries, which made many technological marvels possible. do not blame the material for inferior cultures which give it a bad name by dumping it all around.

@amistry605

3 жыл бұрын

@@StoicNatsoc I totally agree. I think people just take it for granted and didn't know how to handle it. And BTW I was just replying to what was said in the video, not bashing plastic.

@josephbenson4413

3 жыл бұрын

How about the Polymer Age instead?

@amistry605

3 жыл бұрын

@@josephbenson4413 meh.. lol

@talyn3932

2 жыл бұрын

@@josephbenson4413 That's more accurate. There was neolithic plastics in use in the form of resins. Plastic has a term usage beyond polymer plastic. It leads to some confusion.

Another ROCK SOLID episode!

Nice to see a good old IKEA bag being put to good use. Can't imagine many others have been used to collect pumice..... they have now probably been used to carry everything 🤣

*Advancement Made: Roman Empire*

These guys are like dr.stone

I absolutely love this channel

THANK YOU SO MUCH!

Anyone else worried about Andy's legs during this? Like worried things would shatter and shrapnel would go into his legs

@DreamCrusher123

3 жыл бұрын

No

As a Civil Engineering Major, this personally hurt to watch. Entertaining and informative nonetheless.

@loganstrong5426

3 жыл бұрын

Oh man, same. "That Roman concrete needs more water." "Why aren't you tamping!" "Fill in the voids! Come on!" "Did you keep it moist while curing???"

Really looking forward to seeing the sea water concrete

Ikea bags are awesome, who would have thought a bag in the shape of a box would be so versatile.

Make damascuss steel.

@NoName-sy3di

3 жыл бұрын

Damascuss steel (woot steel) doesnt exist unless its artifacts....the "damascuss" now is just patern welded steel....just looks pretty

@dorito_mauller

3 жыл бұрын

@@NoName-sy3di you misspelled wootz.

While we're here it's important to remember that concrete is wonderful, but comprises over 8% of global greenhouse emissions.

@Serahpin

3 жыл бұрын

It's cold right now so it's obvious we're not using enough concrete.

@caiawlodarski5339

3 жыл бұрын

@@Serahpin ok boomer

@jesst5474

3 жыл бұрын

When compared at exactly the same size say 3x3 for example, a patio made from concrete has a lower carbon footprint than one made from timber, requires less maintenance and will last considerably longer.

@Serahpin

3 жыл бұрын

@@jesst5474 Watch out, you'll be reported for posting hatefacts.

I think you should explore the development of Ikeatite, which is the main ingredient in those extremely useful Ikea bags.

There are companies using glass from recycling to make a kind of lightweight fill material that, essentially, is artificial pumice. I have hauled bulk bags of it to jobsites, and an antire tractor trailer load was under 15k lbs.

channel name edit "how not to make anything" or "we totally unlocked iron from scratch, right??" watching for years and it just gets worse every episode, its like watching a train wreck..

Roman concrete,when the advanced techniques used is tougher and more durable than modern concrete no question.There are many examples of 2000 Year old Roman structures in tact,while many modern concrete structures start cracking apart within 10 to 50 yrs for example

@hedgehog3180

3 жыл бұрын

Michael P That is not universally true, most buildings you encounter tend to be made to only stand for a few decades so the concrete is optimized for strength so you need less but we can also optimize for durability and that is done with things like nuclear bunkers and dams which need to stand for a long time. Roman concrete also has the benefit of having been used in very mild climates which don't have to deal with a lot of rain and frost which is usually what leads to structural failure. Also there are a lot more examples of Roman structures that aren't intact you just don't ever think about those because well they aren't here anymore, something like 99,99% of all Roman structures have collapsed totally and of the remaining 0,01% a lot of those have partially collasped. The ones that stayed owe just as much to maintenance as they do to the durability of their materials.

I was just watching a whole series of your videos about how to make glass and you said something interesting in this one about how obsidian is formed. You said it forms when volcanic lava cools under pressure. This takes me to the video where you tried to make a knife out of obsidian that you melted and poured into a mold. If obsidian forms when it's under pressure then it makes sense that if you reform it, it should be pressurized when it cools. The other a method I was thinking of was to heat the mold so the obsidian cools faster and doesn't crack from the air in the environment.

Jesus Christ the footage at 03:03 is so trippy I had to look at it five times to realise what I was seeing and the perspective of it.

i hope he can get to the point of really making some money off all this

@alexsfamily4166

3 жыл бұрын

dude.. he have sponsor, ads, paternon, item shop, and a mail box where fan send stuff.. whit 1.5 milion sub and 500k of vies for evry vid and one sponsor in almost evry video he make nice money.. (proof? he have a stuff for shooting the video and editing and also helper)..

Fake, he didn't use a diamond pickaxe for the obdisian (joke btw)

@pagnedaman3777

3 жыл бұрын

(thanks for the btw)

I think that video was perfect example to do collab with hydraulic press channel!

i love the idea of your channel this always bguis me when i cant make something myself

Hearing the term “ Concrete Age” made me so incredibly sad for a sec because it’s honestly the perfect description for the modern era

@seanprudden6335

2 жыл бұрын

Why? Concrete is an ancient material that we have now mastered in our own new and amazing ways to build incredible structures. concrete is something that has been with us humans for a long time and our modern concrete world is a built on the backs of thousands of years of human ingenuity and engineering. Stone masonry is something ancient and beautiful but still, nothing really represents the long-standing human pursuit of construction like concrete. Especially when you consider how tied together modern concrete construction is with iron working, another very old and special human skill, a concrete building is a marvel of the history of humanity and our innovation.

@Kurotama11

2 жыл бұрын

@@seanprudden6335 in the sense that, a vast majority of our current world consists of concrete…as opposed to say, a “green age”

@Kurotama11

2 жыл бұрын

@@seanprudden6335 we cover the ground with concrete, just to have the population buy expensive cushioned shoes cause the ground is too hard

@Kurotama11

2 жыл бұрын

@@seanprudden6335 I’d much rather and age of balance, where we can fuse human society with nature rather than covering nature with it

I miss the times when thumbnails didn't need an exagerated fake reaction face

Watching this channel sometimes feels like a Dwarf Fortress crafting chain in slow motion.

One thing that's not usually stated in these little videos, is that the way that the concrete was used would have been different. Modern concrete cracks quickly on highways, but highways are designed to get the maximum load onto the concrete, the design of the road itself does not prevent and minimize stress, instead, it uses the concrete in "crazy ways" making the most of the strength, but ancient roman buildings and infrastructure may have been designed to minimize stress on the concrete, They would still use efficient shapes, and generally more stable organization of the building materials. This makes sense because in the modern era, we are willing to sacrifice lifespan in order to gain space or capabity (yes, a straight flat bridge is the most stressful way to implement concrete, but we really don't want to do it another way, because a minimal size bridge is the most desirable trait for urban planners). Roman structures used building architecture that was developed for weaker building materials, and those structures that were "modern" actually often did not last. The ones that DID last, look like the buildings that came before the concrete.

this is just an amazing channel

05:30 I told y'all, now he is the expert, determining at a glance what is and isnt good for napping.

Can't wait for the heavy machinegun episode.

im loving these thumbnails

8:39 - If I could afford a car like that, I definitely wouldn't drive it THERE! x'D Great video btw. I love your channel.

I say we are in the glass age. The things we have learned, continue to learn, and make with glass is exploding right now. From tempered glass, to willow glass it has been an amazing thing that has enhanced many so called "higher" technologies.

Yesss finally you thought to make a one of the invention that roman and our modern civilization really needs.....and I also wait for you to make a roman technology....thanks a lot

I watched a whole hour or so documentary on Roman concrete a few years ago and they actually made some and set it up under water then tested it against modern concrete, was a cool little documentary. They did use a different recipe than what you used and it tested out better than modern concrete, but to me the most interesting thing was that the “expert” was talking about how and why the concrete they made back in Rome actually got stronger over time, I can’t remember why they said it does but was still very cool, if I can find it I’ll leave a link

@veen88

Жыл бұрын

Find the link?

@HowToMakeEverything I've been thinking. now that you have access to iron, I think you could make a water wheel powered lathe by ether linking the moving parts up with ether gears or leather belts. As iron can be made into steel, some long lasting tools can be made for it as well as the possibility's of what can be made ... or gust a fancy wood carving tool at best

was hoping to see more about the under water hardening concrete they had

Great video 👍🏻👍🏻👍🏻

I do remember talking about Roman concrete with my uncle (road construction, drainage install etc. Lot of concrete work) He was giving me a rundown of how a longer drying/curing most of the time leads to a stronger/stable product, hence their sea ports of massive concrete slabs still being fine.z Edit: yeah the other comments pretty much nailed it. Testing this was kind of a setup for failure due to the intended cure time for the Roman stuff, and its major selling point being supreme resistance to weathering. Though, in all fairness, it's not really practical for you to just pull out a 30+ year aged brick that's properly cured.