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Twin Towers

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Re: Twin Towers

Postby cyprusgrump » Sat Sep 30, 2023 11:48 am

Lordo wrote:Flippen heck RH, last time I looked at Newton Laws of motion was back in the 70s.

1. A body continues in a state of uniform rest or motion unless acted upon by an external force.
2 The acceleration produced when a force acts is directly proportional to the force and takes place in the direction in which the force acts.
3 To every action there is an equal and opposite reaction.

But the situation here was this.

1. We have a beam which has been constructed as a frame rather than full steel.
2. The said beam has sprayed on it fire retardant.
3. An explosion takes place which strips the fire retardant
4. Immediately followed by intense heat.
5. As has been shown in the clip it takes about half an hour or so for the beam to heat enough to begin to weaken.
6. Once the beam is week enough the weight on it snaps it and it collapses on the the floor below.

The actual explosion and the effect it has is clearly part of the Newton Laws as well as the collapse of the building. The forces on the floor are it's weight and gravity which explains the noise and the speed at which the building collapsed as it did and how fast it did.

Indeed the floor had plenty of potential energy and once the bolts were snapped it got released as kinetic energy.



A quick Google tells us that each tower weighed 500,000 tons.

I reckon the top third (~160,000 tons) collapsing onto the bottom two thirds would do it... :lol:
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Re: Twin Towers

Postby Lordo » Sat Sep 30, 2023 12:04 pm

What waste of life it is for an engineer to study construction for 3 years at the university when such info is available on google.

What an idiot some of our Swine are and they have to prove it all the time.
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Re: Twin Towers

Postby Robin Hood » Sat Sep 30, 2023 4:23 pm

cyprusgrump wrote:
You keep repeating ‘Newton’s Laws of Motion' but I suspect you don’t really understand them nor do you have an explanation of what you think really happened.
(Wow, I managed to hide my ignorance all the 40+ years I used the laws of Physics on an almost daily basis and no body ever found out I knew nothing about the subject! )

I think you’re suggesting that under the eyes of the thousands of people that worked in those buildings, the visitors, the security, the delivery men, etc. a team of Demolition Experts wired the building with thousands of explosive charges, linked with miles of Detonation Cord. Yet nobody noticed anything odd… Not one person?

Cast your mind back to the first attempt to blow up one of the towers. In the later investigation they realise that had the truck with the explosives in, been just 2m closer to the column the chances are it would have probably collapsed that side of the building.

It was obvious then that if it happened again and the attackers used an aircraft instead of a truck which they can stop from entering the area. it could collapse in any direction. They had the foresight to see what could happen ......... the devastation would have been devastating and anywhere in a 360 Deg radius. It was a wake up call, with plenty of ‘what if’s’ and they could well have decided that in such a situation it would be better to bring the buildings down under control than just vacate and see which way it would fall !

But try getting insurance when the Insurance Company knows the building is pre-wired for controlled demolition ...... or indeed get people and/or companies to work in it?

Shortly after that the whole of the WTC complex underwent a complete update of the fire control and alarm systems. That was still being done on 9/11, in fact I believe the weekend before the attack at least one tower was vacated for a complete ‘test’ of the system. So there would have been an almost constant stream of technicians and other people in and out of these buildings and of course most of the work was inside the central core of the building. Of course people noticed ....... but would you know the difference between a Fire Panel and something designed to do a lot more than just that!

The design would involve full redundancy with primary and secondary highways for communication between each panel and the Control Centre. To immobilise that arrangement each highway would need to be cut twice ..... and even then only the completely isolated section would fail. SO ..... IMO not quite such a formidable task as you think it to be?

Anybody that has ever watched one of those Demolition Videos where they knock down a hotel in Vegas or a block of apartments can see what a huge job it would be. Not only the miles of Detonation Cord and the thousands of explosive charges, they often have to remove big chunks of the structure to make sure it falls ‘properly’...

Yes but ........ have you ever seen a video of a steel framed high rise being brought down by Controlled Demolition? NO! Because dealing with a reinforced concrete structure requires exactly what you describe and it requires a timed sequence of BLAST’s i.e. powerful shock waves, to remove the remaining concrete left after it has been weakened.

Steel framed structures are normally demolished from the top down with people cutting the steel into lengths then either dropping them or using cranes to take it down to the ground.
But nobody noticed all this work, Not one person?

If I am any way near the possible scenario I describe then thousands would have seen all these guys with ‘ACME FIRE DETECTION SYSTEMS’ on their bright red overalls ..... and thought nothing more about it ! Most of the workers would install according to drawings ...... they would be unlikely to have any technical knowledge. As for explosives? Nah ..... Thermite/Thermate wrapped round the columns at specific points and marked ‘Structural monitoring device do not remove.’ You don’t BLAST steel ....... you cut it. Thermite/Thermate is a cutting agent that burns at a very high temperature and melts the steel ....... it fizzes, it does not go BANG! Residue of Thermate/Thermite was found all over Manhatton Island after the attack ..... from street level to the roofs of buildings!
And then, they persuaded a bunch of terrorists to learn how to fly and fly the aircraft into the buildings – yet even though they were amateur fliers they hit the building so precisely as to not disrupt the incredibly complicated network of explosives and detonation cord that had been fixed in the building to ensure its destruction?

As pilots, the people training them said they were ALL bloody useless. All they learned to do was fly an aero plane in a simulator ...... none of them had any hours in commercial aircraft. But a highly visible and credible reason or any collapse would be needed ....... BUT did THEY actually fly them? We don’t question drones being flown by ‘pilots’ thousands of miles away from the physical location of the aircraft.

Even Top Gun pilots have said that they would find some of the flying seen difficult without a lot of practice! The Pentagon being a classic example. A 270 Deg decending turn at a speed in excess of Vne, dropping from several thousand feet then over a hiway bridged junction and down to ground level without even touching the grass in the lawn and planting the aircraft into the ground floor windows? Takes some doing that ..... and all we have is 3-4 frames of video that shows nothing except a cloud of flame/smoke.
And yet, years later not one person apparently involved in this huge operation has come forward. Not one person with the deaths of thousands on their conscience has decided to speak out. Not one conspiracy theorist like yourself has managed to find any solid evidence like an unusual amount of explosives being purchased by a demolition company. Nothing.

But we do ..... but people that adapt your approach and belittle others don't accept it. Well, Danny Jewenko springs to mind ...... the Dutch demolition expert and I might add he is not the only one, has spoken out and was soon taken out of the picture. Surely .... its a bit like NordStream 1 & 2 that the US/CIA were behind it, is pretty evident ...... but has any official said so? I wonder how long before they bump off Seymore Hersh?
Sometimes we have to rely on Occam's razor…

Terrorists flew planes into the building causing vast damage and an inferno which caused them to collapse.

Now you spoil your image! The planes did not cause vast damage nor did they cause the collapse, otherwise after the impact the buildings would have toppled!!!!! Back to Newton ...... you cannot get the controlled collapse at free fall acceleration that we all saw from an asymmetrical impact without some external help! Firstly It needed zero resistance to gravity which means that the steel that was holding up around 250,000 tonnes of high rise building would have to have been removed.

Newton again ...... in both cases the collapse would have taken the least line of resistance ....... and in both cases with one side still more-or-less attached to the main structure it would have toppled! It didn’t ..... WHY?
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Re: Twin Towers

Postby Robin Hood » Sat Sep 30, 2023 6:07 pm

Lordo;
Flippen heck RH, last time I looked at Newton Laws of motion was back in the 70s.

You obviously weren’t listening to your teacher! :roll:
1. A MASS remains in a state of rest or constant motion, until acted upon by an external force.
2 The redirection produced when a force is applied to the MASS moves the MASS in the direction of the line of force.
3 To every action there is an equal and opposite reaction.


But the situation here was this.

1. We have a beam which has been constructed as a frame rather than full steel.

YES ......... I assume you mean the floor trusses?
2. The said beam has sprayed on it fire retardant.

YES .....
3. An explosion takes place which strips the fire retardant - Newton law

YES ..... but I don’t see how Newton applies in this case.
4. Immediately followed by intense heat.

I disagree! Where is all this heat coming from?

80% of the fuel went up in an external fire ball ...... tanks ruptured on impact, a large portion of the fuel became droplets (spray) ...... went out the other side with debris ..... mixed with the available oxygen (AIR) and BINGO you got the fireball.
5. As has been shown in the clip it takes about half an hour or so for the beam to heat enough to begin to weaken.

How are you getting all this heat? The fuel that was left after the 80% created the fireball, once again complied with Newton and followed gravity ...... down the lift shafts and by the time it got down to the lower levels it had all burned off. We know this because the fire crews opened a couple of lifts only to find them full of badly burned corpses! Within two minutes or so after the impact most of the remaining fuel had either burned off or gone down the centre column and lift shafts.

All that was left was office furnishings, partition’s , carpets etc. and they cannot burn hot enough to soften steel. Also look at the fire in the building! Thick black smoke and mainly red flame which is a sign of a fire lacking oxygen ..... this will keep the temperature down as well.
6. Once the beam is weak enough the bolts holding it snaps and it collapses on to the floor below. Newton law

Now spread you view! This is a huge open area, even if you did get the heat required the bolts holding it would fail randomly. When the floor pan buckles the light concrete breaks up into small pieces and dust ...... LOTS of dust. The MASS you need has now vanished .... literally into thin air! NO mass means nothing to accelerate ..... so no kinetic energy.
The actual explosion and the effect it has is clearly part of the Newton Laws as well as the collapse of the building.

If there were explosions they were to redirect the normal path Newton dictates and that created what we saw. It was Newtons Law modified by mans intervention using another force to redirect the MASS, that gave the controlled demolition. ‘ Something’ removed those 47 columns ahead of the collapse front ..... because that is the only way you could achieve free fall acceleration!

I am afraid your pancake theory does not work ...... and that is not just my opinion, it was disproved officially within a few days of 9/11.

The forces on the floor are it's weight and gravity which explains the noise and the speed at which the building collapsed as it did and how fast it did.

The weight of the floors (potential energy) you say is the mass that needs to accelerate but how do you remove all the 47 columns that are the resistance to gravity and resisting the movement in the direction of gravity?. What is going to remove them to start this acceleration under the pull of gravity? Even if your ‘floors’ were still flat slabs of light concrete, their Mass is not enough to exert the force required to crush the columns
Indeed the floor had plenty of potential energy and once the bolts were snapped it got released as kinetic energy.

But the potential energy disappeared directly the slabs turned to small particles and dust.

Sorry, but you are doing what LR and Paphits do ....... you leave out crucial elements of the story and get the wrong answer to 2+2= :?: :roll:
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Re: Twin Towers

Postby Lordo » Sat Sep 30, 2023 9:48 pm

Everyone knows the answer to 2+2 RH. 22

Have you read the NIST investigation.

https://www.nist.gov/blogs/taking-measure/20-years-later-nists-world-trade-center-investigation-and-its-legacy
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Re: Twin Towers

Postby Lordo » Sat Sep 30, 2023 10:08 pm

In this clip you can clearly see fire raging from inside the building long after the explosion in the first tower and eventually the second too. The volume of smoke is a clear indication of the fire through after the explostion..

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Re: Twin Towers

Postby cyprusgrump » Sun Oct 01, 2023 12:14 pm

Robin Hood wrote:Cast your mind back to the first attempt to blow up one of the towers. In the later investigation they realise that had the truck with the explosives in, been just 2m closer to the column the chances are it would have probably collapsed that side of the building.

It was obvious then that if it happened again and the attackers used an aircraft instead of a truck which they can stop from entering the area. it could collapse in any direction. They had the foresight to see what could happen ......... the devastation would have been devastating and anywhere in a 360 Deg radius. It was a wake up call, with plenty of ‘what if’s’ and they could well have decided that in such a situation it would be better to bring the buildings down under control than just vacate and see which way it would fall !


Oh wait... :?

So you're claiming that due to the threat of another terrorist attack the whole complex was wired with explosives so that it could be brought straight down? :o

Do you and your tin-foil hatted chums also believe The Empire State Building (and every other tall building in the 'States) has been prepared in the same way...? :shock:

Oh my! :lol: :lol: :lol:
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Re: Twin Towers

Postby Robin Hood » Sun Oct 01, 2023 1:28 pm

cyprusgrump wrote:
Robin Hood wrote:Cast your mind back to the first attempt to blow up one of the towers. In the later investigation they realise that had the truck with the explosives in, been just 2m closer to the column the chances are it would have probably collapsed that side of the building.

It was obvious then that if it happened again and the attackers used an aircraft instead of a truck which they can stop from entering the area. it could collapse in any direction. They had the foresight to see what could happen ......... the devastation would have been devastating and anywhere in a 360 Deg radius. It was a wake up call, with plenty of ‘what if’s’ and they could well have decided that in such a situation it would be better to bring the buildings down under control than just vacate and see which way it would fall !


Oh wait... :?

So you're claiming that due to the threat of another terrorist attack the whole complex was wired with explosives so that it could be brought straight down? :o

Do you and your tin-foil hatted chums also believe The Empire State Building (and every other tall building in the 'States) has been prepared in the same way...? :shock:

Oh my! :lol: :lol: :lol:


You have an explanation that fits what we all saw on TV ..... a free fall collapse of steel framed buildings!

You asked how it would be possible for the buildings to be pre-wired for controlled demolition without anyone knowing about it, because you couldn't see how that could be achieved? So I gave you an explanation of a way it COULD have been achieved ..... because I am obviously far better at coming up with solutions than you are. (I also have many years (40+) experience of the design, installation and commissioning of large scale plant control systems, which includes sequenced Plant shut down in the event of certain plant failures.)

You then resort to the 'tin-foil hatted chums' insult' ....... but you cant come up with any explanation of your own ..... you fall back onto the official line ...... which has more holes in it than a colander ...... but you will just accept that without question? Who is the sucker here?

Then you show your lack of a broader understanding of a subject you appear to know so much about ..........
Do you and your tin-foil hatted chums also believe The Empire State Building (and every other tall building in the 'States) has been prepared in the same way...? :shock:

The Empire State and other tall buildings are not all STEEL FRAMED ! :roll: The Oklahoma bombing was a big blast ...... blew off the front of the building ....... but it didn't collapse! It wasn't a steel framed building either. so may be its the type of construction that creates this sort of problem, a problem that requires a different solution. Or doesn't that occur to you?

At least I am smart enough to work out a way it COULD be done! :wink:

This sort of sarcastic response and ridicule is why I didn't spend much time on what happened with the twin towers! All the experts, like you, with no suggestions of their own, just make fun of those that use their knowledge to look for explanations. People like you thought the Wright brothers were barmy, and Barnes Wallace and Frank Whittle and many more, were 'tin-foil-hat' types, but they were all thinkers that came up with solutions.
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Re: Twin Towers

Postby cyprusgrump » Sun Oct 01, 2023 3:48 pm

Robin Hood wrote:
cyprusgrump wrote:
Robin Hood wrote:Cast your mind back to the first attempt to blow up one of the towers. In the later investigation they realise that had the truck with the explosives in, been just 2m closer to the column the chances are it would have probably collapsed that side of the building.

It was obvious then that if it happened again and the attackers used an aircraft instead of a truck which they can stop from entering the area. it could collapse in any direction. They had the foresight to see what could happen ......... the devastation would have been devastating and anywhere in a 360 Deg radius. It was a wake up call, with plenty of ‘what if’s’ and they could well have decided that in such a situation it would be better to bring the buildings down under control than just vacate and see which way it would fall !


Oh wait... :?

So you're claiming that due to the threat of another terrorist attack the whole complex was wired with explosives so that it could be brought straight down? :o

Do you and your tin-foil hatted chums also believe The Empire State Building (and every other tall building in the 'States) has been prepared in the same way...? :shock:

Oh my! :lol: :lol: :lol:


You have an explanation that fits what we all saw on TV ..... a free fall collapse of steel framed buildings!

You asked how it would be possible for the buildings to be pre-wired for controlled demolition without anyone knowing about it, because you couldn't see how that could be achieved? So I gave you an explanation of a way it COULD have been achieved ..... because I am obviously far better at coming up with solutions than you are. (I also have many years (40+) experience of the design, installation and commissioning of large scale plant control systems, which includes sequenced Plant shut down in the event of certain plant failures.)

You then resort to the 'tin-foil hatted chums' insult' ....... but you cant come up with any explanation of your own ..... you fall back onto the official line ...... which has more holes in it than a colander ...... but you will just accept that without question? Who is the sucker here?

Then you show your lack of a broader understanding of a subject you appear to know so much about ..........
Do you and your tin-foil hatted chums also believe The Empire State Building (and every other tall building in the 'States) has been prepared in the same way...? :shock:

The Empire State and other tall buildings are not all STEEL FRAMED ! :roll: The Oklahoma bombing was a big blast ...... blew off the front of the building ....... but it didn't collapse! It wasn't a steel framed building either. so may be its the type of construction that creates this sort of problem, a problem that requires a different solution. Or doesn't that occur to you?

At least I am smart enough to work out a way it COULD be done! :wink:

This sort of sarcastic response and ridicule is why I didn't spend much time on what happened with the twin towers! All the experts, like you, with no suggestions of their own, just make fun of those that use their knowledge to look for explanations. People like you thought the Wright brothers were barmy, and Barnes Wallace and Frank Whittle and many more, were 'tin-foil-hat' types, but they were all thinkers that came up with solutions.


May I politely suggest that you look on Wiki to see how The Empire State Building was constructed...? :roll:


It took 210 steel columns to construct the vertical frame of the building. Steel girders would only be raised 30 stories at a time so cranes were used to pass them from floor section to floor section to complete the frame. Rivets were placed by hand by teams of four.



:lol: :lol: :lol: :roll:
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Re: Twin Towers

Postby Kikapu » Sun Oct 01, 2023 4:06 pm

From all the videos we have seen of the collapsed buildings of the three World Trade Centers 1, 2 & 7, buildings 1 & 2 had collapsed top to bottom, indicating structural damage to the buildings where the aircrafts impacted the building by destroying the steel frames by the force of the impacting aircrafts and the intense fire following the explosions, regardless how much of the fuel from the planes went up in a ball of flames upon impact. There was enough fuel left to burn the several floors on each building to further weaken the the remaining steel frames of the buildings.

I agree that normal heat generated by similar fires in other similar type of buildings would not have brought the buildings down, but this was not just a another fire in a building. These fires were way up the building where most of the floors hit by the planes were open to strong drafts blowing into the building, crating a furnace like heat where it would be very hot that would buckle steel frames, even if it weren’t hot enough to melt them. As most Cypriots know when preparing to start burning charcoal to make kebabs, we would first lay the charcoal and then place a large tin can that is open at both ends on top of the charcoal and fill is with more charcoal and light it. The tin can acts like a chimney that sucks the air from the bottom intensely which burns the charcoal fast and at a high temperature. This is how the fires got very intense in the Towers 1 & 2 to cause it to collapse.

There’s also the weight issue above the damaged areas of the buildings. North Tower was hit first by B-767 and the South Tower was hit second some 20 minutes later by B-757, and yet, the South Tower collapsed first considerable time before the North Tower despite being hit by a slightly smaller aircraft. The only difference between the two impact zones, is that the South Tower was hit at much lower part of the building than the North Tower, which meant that there was a greater weight above the impact area on the South Tower, which caused it to collapse first. The fire intensity and damaged steel frames from the planes hitting the buildings were more or less the same at the initial impact and the weight above the damaged areas falling onto the weakened structure below brought down the Towers one floor at a time from top to bottom at almost the speed of gravity.

World Trade Center Tower 7 had collapsed from bottom to top, which meant that it was a controlled demolition and the fires in the 2-3 floors of the entire building at the higher floors of the building had nothing to do with the collapse of the building.
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