General Discussion

librechik

(30,955 posts)

27. The highway pancaked once and hit the ground. The buildings each

Sat Apr 1, 2017, 12:23 PM

Apr 2017

had to pancake around 100 times, each time meeting zero resistance from the underlying cooler steel reinforced floors to fall down in seconds, like we saw.

Gravity made the bridge fall down. What caused gravity to fail 200 times (not counting tower 7 which even more graphically shows the collapse of sequential floors. )

I know, it was 800 gallons of kerosene! Which never gets hot enough to melt steel. Thank goodness, I'd have to throw out my camp stove!

Click here to purchase valentine hearts!

Edit history

Please sign in to view edit histories.

Recommendations

0 members have recommended this reply (displayed in chronological order):

138 replies

= new reply since forum marked as read

Highlight:

For anyone who still doesnt think 160,000 lbs of jet fuel can make a bldg collapse [View all] 7962 Apr 2017 OP

Conspiracy theory stuff goes in the Creative Speculation Group. MineralMan Apr 2017 #1

But what about conspiracy debunking? NightWatcher Apr 2017 #2

There has been a long tradition on DU of not posting 9/11 arguments MineralMan Apr 2017 #4

Creative speculation belongs in creative speculation. kcr Apr 2017 #8

You were right... genxlib Apr 2017 #59

That was my first thought as well. cwydro Apr 2017 #3

The impact of fire on steel structures isn't a conspiracy, it's engineering reality. NutmegYankee Apr 2017 #15

Exactly. Heat DOES affect steel. Someone tell Rosie& the others. 7962 Apr 2017 #39

Heat also dramatically weakens reinforced concrete. nt Blue_true Apr 2017 #85

Maybe it's time to honor science and factual arguments. yardwork Apr 2017 #22

+1000 nt NutmegYankee Apr 2017 #23

9/11 - another massive republican FAIL Achilleaze Apr 2017 #26

apples and oranges. librechik Apr 2017 #5

I'm an Engineer... genxlib Apr 2017 #12

In layman's terms the planes brought em down. DemocratSinceBirth Apr 2017 #13

OK genxlib Apr 2017 #19

I knew I could count on at least ONE engineer to show!! Thank you. 7962 Apr 2017 #40

Mechanical Engineer. NutmegYankee Apr 2017 #49

For Pete's sake, I'm a drummer and even I get it.. pangaia Apr 2017 #101

The highway pancaked once and hit the ground. The buildings each librechik Apr 2017 #27

You are misunderstanding the physics genxlib Apr 2017 #37

In a large building sarisataka Apr 2017 #38

It is risky to ask a nerd a technical question... genxlib Apr 2017 #51

Thank you sarisataka Apr 2017 #53

Your welcome genxlib Apr 2017 #57

Great posts. Except for one thing... DanTex Apr 2017 #60

That's OK genxlib Apr 2017 #63

You're doing just fine Warpy Apr 2017 #76

Tanks for pointing that out. Another forgotten point. Or ignored. 7962 Apr 2017 #80

That and a little learning being a dangerous thing Warpy Apr 2017 #90

Thanks for the explanation. Hadn't thought about all that. /nt. Mean Gene Apr 2017 #61

What this exchange tells me is that some people will choose ideology over facts and physics no stevenleser Apr 2017 #95

Well said GulfCoast66 Apr 2017 #97

Once again, even this dumb drummer even gets it. DUH !! pangaia Apr 2017 #102

Depends on the building, really Warpy Apr 2017 #108

Interesting. I always learn new things here. pangaia Apr 2017 #111

Here's a nicely succinct rebuttal that I found a few years back Orrex Apr 2017 #126

Generally Speaking... ProfessorGAC Apr 2017 #116

Thanks, Prof. I learned even more.... pangaia Apr 2017 #117

Whole Tone Music ProfessorGAC Apr 2017 #138

One small (?) change to what you said that I rarely see acknowledged. WillowTree Apr 2017 #103

You are correct genxlib Apr 2017 #119

Even more genxlib Apr 2017 #54

Thanks Dem2 Apr 2017 #78

"I know, it was 800 gallons of kerosene!" No, it was 10,000 gallons of jet fuel... EX500rider Apr 2017 #73

I'm an engineer Dem2 Apr 2017 #77

excuse me, what made the rest of the 100 plus floors not touched by fire fall?? librechik Apr 2017 #31

Its called physics. 7962 Apr 2017 #41

except force doesn't increase as it hits obstacles like steel reinforced concrete floors librechik Apr 2017 #52

Please see post 54 genxlib Apr 2017 #55

More to your point genxlib Apr 2017 #64

This is why stupid consipiracy theory crap is relegated to the dungeon snooper2 Apr 2017 #120

But steel doesn't melt! Steel has never melted in all of recorded history! Aristus Apr 2017 #6

There are people who actually think steel doesn't melt? Laffy Kat Apr 2017 #10

Who the fuck knows? Aristus Apr 2017 #16

That is mind boggling! yardwork Apr 2017 #20

THANK YOU!!! I was never aware of a "steel beam mine" nt 7962 Apr 2017 #42

Steel melts, IIRC, at 1600 degrees F. At 1200 degrees F (the maximum temperature KingCharlemagne Apr 2017 #11

actually it melts at 2750 degrees if you are talking Farehrenheit librechik Apr 2017 #34

And it retains all strength and rigidity right up until it reaches 2750 degrees? Orrex Apr 2017 #127

Steel doesn't need to reach melting temperature to become soft. NutmegYankee Apr 2017 #17

I agree. Aristus Apr 2017 #18

My sarcasm meter is a bit broken today. NutmegYankee Apr 2017 #21

247 times--all the way down all three WTC buildings librechik Apr 2017 #29

Overload. NutmegYankee Apr 2017 #36

steel doesn't melt at 860 degrees, the hottest jet fuel gets without a furnace to help librechik Apr 2017 #28

Sorry, but jet fuel can burn up to 1500F. Google is your friend 7962 Apr 2017 #44

I thought about the 911 Troofers too Hokie Apr 2017 #7

The engineering involved in the two is so different that it's comparing a dog to a tree. KittyWampus Apr 2017 #9

Fire weakens structure. Structure collapses. kcr Apr 2017 #14

What brought the other building down? panader0 Apr 2017 #24

Most likely it was the plane that hit the second tower JimGinPA Apr 2017 #47

Both buildings were hit by a plane near the building top. Blue_true Apr 2017 #86

Three buildings fell. One was not hit by anything. panader0 Apr 2017 #89

What makes you think it wasn't hit by anything? EX500rider Apr 2017 #132

If you look closely below, you can see the steel I beams that support the deck. NutmegYankee Apr 2017 #25

One possible difference genxlib Apr 2017 #43

You're right. NutmegYankee Apr 2017 #45

Burning jet fuel has a specific temperature. It does not reach that sufficient to turn REINFORCED WinkyDink Apr 2017 #30

Complete nonsense Major Nikon Apr 2017 #65

Even the compromised "Popular Mechanics" only goes as far as claiming the steel columns would WinkyDink Apr 2017 #92

No doubt PM is part of the conspiracy Major Nikon Apr 2017 #93

you must be kidding me?? GulfCoast66 Apr 2017 #96

Yeah, Popular Mechanics sold out a LONG time ago- 1936! snooper2 Apr 2017 #121

And the NYT printed that Saddam had WMD's. Your point? WinkyDink Apr 2017 #136

What's "REINFORCED steel"? EX500rider Apr 2017 #74

There are many grades of steel. Blue_true Apr 2017 #87

My father worked for Bethlehem Steel. Titanium, e.g., is added to strengthen steel. WinkyDink Apr 2017 #91

WTF is reinforced steel? GulfCoast66 Apr 2017 #98

Just for fun... genxlib Apr 2017 #128

It does reach a temperature sufficient to soften it Warpy Apr 2017 #109

For anyone who still swallows the official republican Fake News talking points Achilleaze Apr 2017 #32

lol--so true. librechik Apr 2017 #33

What I don't get is why you need it all to be a lie. Kentonio Apr 2017 #62

I don't fucking "need" anything but the facts. librechik Apr 2017 #66

Engineers keep giving you the facts. Kentonio Apr 2017 #69

Brilliant & right to the point. Thanks nt 7962 Apr 2017 #83

I will stick with my source thank you...... whistler162 Apr 2017 #88

But you're choosing "fake facts" over actual FACT. 7962 Apr 2017 #70

here, I will help you out: EX500rider Apr 2017 #75

Any fact that doesnt support the theory is said to be "faked by the CIA" 7962 Apr 2017 #81

Go rewatch the South Park episode Jonny Appleseed Apr 2017 #105

28 pages showed Saudi intel agents helped and funded hijackers yurbud Apr 2017 #35

You dont have to be a republican to understand physics. 7962 Apr 2017 #46

The Democratic Party is supposed to support science. NutmegYankee Apr 2017 #50

That AT-AT is like ten times taller than the normal Walkers. It's legs would be exceptionally long anneboleyn Apr 2017 #56

lofl uponit7771 Apr 2017 #94

I too mock people who place more faith in physics than in my own allegations. LanternWaste Apr 2017 #130

Post removed Post removed Apr 2017 #48

Made It Happen On Purpose? WTF? Squinch Apr 2017 #58

Made what happen? Achilleaze Apr 2017 #67

What you lack in objective facts is more than made up for in unsupported allegations... LanternWaste Apr 2017 #131

What you gain in subjective fancification is more than diminished in supported non sequiturs Achilleaze Apr 2017 #134

Yes, there are whole groups dedicated to that line of nonsense; 7962 Apr 2017 #71

That's Jackpine Radical level of crazy! Squinch Apr 2017 #72

Got any examples of the Islamist flying planes into buildings thingys that you read? GulfCoast66 Apr 2017 #99

It was well after the 1st attack on the WTC. A couple stories I had seen on TV; 7962 Apr 2017 #112

I think a missile brought the bridge down. egduj Apr 2017 #68

Oh lord, that'll really bring 'em out! 7962 Apr 2017 #82

Bullshit GulfCoast66 Apr 2017 #100

Some people just want to watch the world burn Warpy Apr 2017 #110

Just stop with your ridiculous conspiracy theories, okay??? obamanut2012 Apr 2017 #115

It was actually weakened by urine from homeless folks who lived there snooper2 Apr 2017 #122

I saw this coming. Dem2 Apr 2017 #79

From what I understand, the main issue with the old WTC Blue_true Apr 2017 #84

This thread brings back memories. beam me up scottie Apr 2017 #104

I think that this election cycle showed us that we have no aliens or CIA blackout squads Jonny Appleseed Apr 2017 #106

Precisely nt 7962 Apr 2017 #113

follow the money jesskirablue42 Apr 2017 #107

If you're trying to refer to shorting airline stocks, another overblown failure. 7962 Apr 2017 #123

They are charging a homeless guy...I call bullshit. Demsrule86 Apr 2017 #114

The bridge was brought down by an implosion bomb. Orrex Apr 2017 #118

Micronukes to be precise. Either that or a directed energy weapon of some sort. stevenleser Apr 2017 #124

Finally a voice of reason! Orrex Apr 2017 #125

Now, now, we all know it was micro thermite plasma charges! EX500rider Apr 2017 #133

They aren't even good conspiracy theorists. That's how fucking dumb they are. NCTraveler Apr 2017 #129

SOOO not apples to apples. OMG. WinkyDink Apr 2017 #135

You should read some of the posts above from actual engineers 7962 Apr 2017 #137