• Quick note - the problem with Youtube videos not embedding on the forum appears to have been fixed, thanks to ZiprHead. If you do still see problems let me know.

'What about building 7'?

Status
Not open for further replies.
I can't recall exactly how Danny Jowenko is an expert on high rise demolitions. Quick google searches only show truther garbage sites. I know he was proclaimed a 'Danish demolition expert" by trutherdom.

Was he even qualified to to make his claims? I know he is pretty much the ONLY demolition "authority" used by the truthers as every single demolition expert in the world has been compromised by the US.

He was the owner of a company that among other things, performed demolitions.

http://www.jowenko.com/index.php/1,3,1
 
I think you are talking about springs here.
Also when you say that NIST "added" elements, what you are misdescribing is the make up of connections in ANSYS, where NIST would for example, take column 78 connections and just assume that column 79 had similar. It's shoddy, and does not account for stiffener plates for example.

Wait, what do you think NIST was trying to simulate? Was it how the building collapse COULD HAVE occurred given heat from a fire, or whether it COULD occur at all?

If it was how it COULD HAVE occurred, is the purpose of a simulation to have absolute fidelity (to an unknowable interior as is state), or point to a likely path using well defined assumptions?
 
<Sigh> more of the same from trooferland....
I can start making claims for "maybe what you think" as well........you just keep spinning the hamster wheel of troofer claims with no understanding of building structures or construction.

Typical

All you had to say is that you do or don't know where or what the beam stubs are, or what their function is. I didn't notice that NIST had left them out, and had to have it pointed out to me.
 
The highlighted part does not follow from the part that precedes it. NIST didn't ever claim any beam had to expand that much.
They made exactly that claim.
NIST said:
"The travel distance for walk off was 6.25 5.5 in. along the axis of the beam and 5.5 6.25 in. lateral to the beam"
http://www.nist.gov/customcf/get_pdf.cfm?pub_id=901225
I don't see the word "expanded" there. I only see the term "travel distance for walk off", which alludes to the relative displacement between the beam and the seat.

Are you aware of the difference between "travel distance for walk off" and "expansion"?


Even NIST, are not silly enough to claim that the seat moved to the East as the girder was being pushed West.
That's not being silly. Being silly is imagining that in such a jeopardized building the conditions remained as designed.

"The temperature of the girder between Columns 76 and 79 on Floor 13 was sufficient to displace Column 76 to the west and Column 79 to the east."
Using your style of referencing:
http://www.nist.gov/customcf/get_pdf.cfm?pub_id=901225


Yes, it has occurred to me that 2 different things may in fact actually be 2 different things.
Yet you don't seem to distinguish them.


I think that you need to read and understand the erratum posted above, and put your comment into some perspective.
I did. NIST are saying that the distance for walk off was 6.25", but they are NOT saying that the beam had to expand as much. That's entirely your claim, not NIST's.


Very true. It also matters how much the girder would expand at the given temperature, and as it happens, the girder would actually expand to the inside of the side plates of the built up column C79. That alone leaves your "seat moving to the East" theory in shreds.
You can't be serious. Are you now claiming that the girder was restrained by the column plates? Why was walk-off, axial or lateral, into consideration in any way then?

And it's not "my theory". See above.


To be clear, Are you saying that the beams would break from the flange connection at the girder and fall onto the bottom flange and continue to push the girder to the West. I don't think you are taking into account that these beams were not at 90 degrees to the girder.
That analysis lacks any rigour. You need to show that the beam(s) (which?) fell, in the first place, and even if so, that it was impossible for them to be restrained by the connection from displacing North South while lying on the flange.
 
Last edited:
What part?

The distance between the columns part. Presumably you are talking about the distance from C79 to C38. There is no way on this earth that this distance would change due to a failure of the girder spanning C79 - C44, at its connection to column 79. Can't happen.
 
The distance between the columns part. Presumably you are talking about the distance from C79 to C38. There is no way on this earth that this distance would change due to a failure of the girder spanning C79 - C44, at its connection to column 79. Can't happen.
Why?
 
I don't see the word "expanded" there. I only see the term "travel distance for walk off", which alludes to the relative displacement between the beam and the seat.

Are you aware of the difference between "travel distance for walk off" and "expansion"?
"And, of course, the phenomenon that we saw on 9/11 that brought this particular building down was really thermal expansion, which occurs at lower temperatures." Shyam Sunder Aug 26th 2008, NIST technical briefing.
 
"And, of course, the phenomenon that we saw on 9/11 that brought this particular building down was really thermal expansion, which occurs at lower temperatures." Shyam Sunder Aug 26th 2008, NIST technical briefing.
Yep, but they don't claim the beam expanded that much. You made that up.

Reread what I said about leveraging.
 
Yep, but they don't claim the beam expanded that much. You made that up.

Reread what I said about leveraging.

"In this case, the floor beams on the east side of the building expanded enough that they pushed the girder connecting Columns 79 and 44 to the west on the 13th floor. (See Figure 1–5 for column numbering and the locations of girders and beams.) " http://www.nist.gov/el/disasterstudies/wtc/
 
The claim that is made by NIST is that the girder walked 6.25". What pushed it?
What you don't seem to understand is that a beam can expand say 5" and cause the total accumulated displacement between seat and girder to exceed 6.25", counting east displacement of the column (which is a very plausible possibility as NIST pointed out, and as I quoted in the part of my message that you ignored), leveraging and other factors.

You keep ignoring that possibility and putting words on NIST's mouth that they never said.

ETA:
"In this case, the floor beams on the east side of the building expanded enough that they pushed the girder connecting Columns 79 and 44 to the west on the 13th floor. (See Figure 1–5 for column numbering and the locations of girders and beams.) " http://www.nist.gov/el/disasterstudies/wtc/
Same mistake again.
 
Last edited:
What you don't seem to understand is that a beam can expand say 5" and cause the total accumulated displacement between seat and girder to exceed 6.25", counting east displacement of the column (which is a very plausible possibility as NIST pointed out, and as I quoted in the part of my message that you ignored), leveraging and other factors.

You keep ignoring that possibility and putting words on NIST's mouth that they never said.

BS, the column is tied and nobody claims any different, apart from you.
 
Status
Not open for further replies.

Back
Top Bottom