and in the 1970s engineers calculated the curved towers center of gravity with this
now you're going to use cg technology engineers exactly that's what we need we need cg we need cg
we need to know hey guys uh welcome back to foreign reacts we're gonna be checking out
a video titled why doesn't the learning the why did i say learn in i literally read that
before i started the video and i i was like why is it learning why is it a learning tower
it's actually leaning i really i i hate the fact that i i read what is not there
sucks being human but either ways uh the video title is why doesn't the leaning tower of
pisa fall over or paisa paisa pisa paisa fall over and uh we're gonna be checking
out that video today y'all can tell me where this tower is because i don't know
if it's actually physically somewhere i can go i'm gonna visit it one day so y'all can let me know
about that in the comment section if you want if you don't wanna you don't have to but either ways
um go check out the other channel by the time you're seeing this video i'm likely gonna be
in europe so go check out that channel yes i'm likely gonna be in europe uh yeah so click the
link in the description go check out the other channel it's going to be the channel where i you
know talk about being in europe such and such and such and such and such if you don't want to
don't do it please it's not necessary neither was let's get right into this video guys
what don't pointless things have a place to in this far from perfect world of course of course
people are just too smart these days man
in 1990 the italian government enlisted top engineers to stabilize pisa's famous leaning tower
there had been many attempts to write the tower during its 800-year history
but this team's computer models revealed the urgency of their wait what
okay we gotta go back
there had been many attempts to write the tower during its 800 year history
but this team's computer models what
i know i have issues you know sometimes i'll hear the wrong thing my brain will process things the
wrong way i'll read things the wrong way but i'm not hearing correctly did i hear 800 years
i don't know what i just heard but i'm just gonna accept it i heard 800 a building
older than america
no no no no no no no no no no no no that must have been an error bro 800.
that's wild revealed the urgency of their situation they projected the tower
would topple if it reached an angle of 5.44 degrees and it was currently leaning at 5.5
no one knew how the tower was still standing but the crisis was clear they had to solve a
problem that stumped centuries of engineers and they needed to do it fast to understand their
situation it's helpful to understand why the tower tilted in the first place in the 12th century
the wealthy maritime republic of pisa set about turning its cathedral square into a magnificent
landmark workers embellished and enlarged the existing church and added a massive domed
baptistry to the plaza in 1173 construction began on a freestanding campanile or bell tower the
engineers and architects of the time were masters of their craft but for all their engineering
knowledge they knew far less about the ground they stood on pisa's name comes from a greek word
for marshy land which perfectly describes the clay mud and wet sand below the city's surface
ancient romans counteracted similar conditions with massive stone pillars called piles which rest
on earth's stable bedrock however the towers architects believed a three meter foundation
would suffice for their relatively short structure unfortunately for them less than five years later
the tower's southern side was already underground such a shifting foundation three meters man i know
how to make floor plans i know how to make plans to build a house i know how to do that
three meters i don't know man three meters and that thing so tall come on man normally have
been a fatal flaw if workers added more weight the pressure from upper stories would sink the
structure and fatally increase the lean but construction halted at the fourth story for
nearly a century as pisa descended into prolonged warfare this long pause allowed the soil to settle
and when construction began again in 1272 the foundation was on slightly more stable footing
under the direction of architecture man shout out to italy that's where i'm from baby
i'm just playing i'm not from italy but that's my name dawg that's my penis
when you know you know when you know you know that's my name baby
yes sir my name is really special my name is actually blible i've done so many research
about my name um my name is actually um actually a bible character but from uh what what is it greek
what is it it's from the greek translation it is so the original name is john which means god
is gracious or i think that's what it means god is gracious john but then it is translated into
roman i think i don't remember if it's roman but when it's translated to roman it goes to giovanni
yeah that's what it goes so yeah whoa my name is in the video man i'm losing my mind
vani di simone workers compensated for the tower's minor tilt by making the next few
floors taller on the southern side but the weight of the extra masonry made that side
sink even deeper by the time they completed the seventh floor and bell chamber the angle of the
tilt was 1.6 degrees i was supposed to operate on that though like you could do a little bit of
math you like based off of the trajectory of that there is one side of the building that is
sinking and based off of that trajectory if that was spotted from earlier on um date i think you
could have balanced that out with many things like you could build you could build like um
i don't even know what what to call them right now but let's say you're gonna build build um
what are those called right now i don't remember but you could build like four corners right
far away and they were um attached to keep the building straight that's one you could put like
the same way how they put the weight on it and make one side of it taller and one side shorter
that kind of would still go down maybe you should add more weight you know so you use
different types of material on one side and that would stabilize the building lightly because
center of gravity you're putting more weight on one side rather than the other side which
is weaker at the foundation that's what i think i don't know i'm not no genius but whatever
for centuries engineers tried numerous strategies to address the lean in 1838 they dug a walkway
around the base to examine the sunken foundation but removing the supporting sand only worsened
in 1935 the italian corps of engineers injected mortar to strengthen the base that's exactly
what i was gonna think too but it affected it it pushes it over even more i think they're using
smart strategies but they're not implementing the strategies the best way that's what i think
i'm not no genius but i think so because um putting that in the foundation could help
but it depends how you're gonna attack it you have to you have to put it at a you know it's kind of
weird it's our architecture is not easy it's not simple when it comes to things like these however
the mortar wasn't evenly distributed throughout the foundation resulting in another sudden drop
all these failed attempts along with the ever sinking foundation moved the
tower closer to its tipping point and without definitive knowledge of the soil composition
engineers couldn't pinpoint the tower's fatal angle or devise a way to stop its fall
in the years following world war ii researchers developed tests to identify those missing
variables and in the 1970s engineers calculated the curved tower's center of gravity with this
exactly that's what we need we need cg we need cg and we need to know the the strength of the
soil we need to measure the strength of the soil we need to know the cg that's the most important
thing if you don't know the cg you're going to fail and i say you need to know the cg because
that's going to that's going to give you a balance you want to balance even though the soil is weak
obviously if it's slant into one side the soil is weaker on one side so if you can get a cg you
could get a little bit of balance that's what i think model how stiff the soil was the tower's
trajectory and the exact amount of excavation needed for the tower to remain standing in 1992
the team drilled diagonal tunnels to remove 38 cubic meters of soil from under the tower's north
end then they temporarily counterbalanced the structure with 600 tons of lead ingots before
anchoring the base with steel cables more than six centuries after its construction exactly what i
was suggesting when i was talking about you know put the four stuff there because that can create
a balance for the building i'm not genius but it's hard for me to explain things i can just only act
and do my thing it's i'm just i'm not one of those guys to do all the explanation i try my best
but it's just not what i'm gifted at but the ideas i'll i'll come up with them but
they're doing exactly what i what i think they should have done but
i guess because i learned these things i actually can think of these things right
now right but back then i don't think they were more focused on those things you know so
no one wanted the tower to fall but they also didn't want to lose the landmark's
most famous feature today the tower stands at 55 or 56 meters tall and it
should remain stable for at least 300 years as a monument to the beauty of imperfection
interested in architecture and design take a closer look at the science behind
the world's tallest buildings or hell yeah i'm i'm always interested in that but that
was good to see that i knew a lot of stuff regarding what's going on right here but that
it's pretty pretty successful that they actually figured out something to actually
keep it a little bit stable because you can't get it perfect but you can stabilize anything
once you're talking about the center of gravity and you're taking into consideration foundation
right you definitely can stabilize things also the three meter thing that i spoke about i don't even
remember i don't even i'm not even sure what three meters is so i'm not even gonna sweat it because i
don't i'm not sure what it is because i probably thought i probably calculated that probably wrong
because i don't know the height of the building and i think he mentioned the height of the
building at the end and compared to three meters i'm not sure but yeah i'm probably messed up with
that but yeah it's really beautiful that they figured it out it's not anything too complicated
right now but back then it would definitely be complicated so you got to give them boys
credit for doing what they got to do shout out to the italians man and good great work great work