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Originally posted by maxella1
Originally posted by liejunkie01
Even if the collapse did start out as explained, the top portion of the building falling 30-50 feet would not provide enough inertia to collapse more than 1-2 stories before losing all its inertia due to resistance.
As I stated above. The force and inertia will increase because of the weight of the debris increasing.
The resistance you speak of is connections, not a solid block. Each floor has only 4 inches of lightweight concrete on top of metal decking connected to trusses which are connected with dampers.
Why are you failing to take into account the connections, after all it is the connections which are offering the resistance?
How would four inches of concrete and some connections by dampers and bolt offer up enough resistance to stop thousands of tonnes of force which is rapidly increasing due to added weight?
When we do multiple floor construction, the engineers will not allw certain scissor lifts on the above decks. They say that the weight cannot exceed 100-200 pounds per square foot. Which we all laugh because I weigh more than that and if I stand on one foot I will exceed the weight limit.
How would 4 inches of concrete offer enough resistance to stop the weight of the upper floors. A weight which is increasing?
Liejunkie #01..... after this....
Personally, I stay away from the building 7 issue because I feel that it is a distraction from the real issue which is the towers.
There is no need for you to say anything else.
Thank you for your service.
Originally posted by liejunkie01
Even if the collapse did start out as explained, the top portion of the building falling 30-50 feet would not provide enough inertia to collapse more than 1-2 stories before losing all its inertia due to resistance.
As I stated above. The force and inertia will increase because of the weight of the debris increasing.
The resistance you speak of is connections, not a solid block. Each floor has only 4 inches of lightweight concrete on top of metal decking connected to trusses which are connected with dampers.
Why are you failing to take into account the connections, after all it is the connections which are offering the resistance?
How would four inches of concrete and some connections by dampers and bolt offer up enough resistance to stop thousands of tonnes of force which is rapidly increasing due to added weight?
When we do multiple floor construction, the engineers will not allw certain scissor lifts on the above decks. They say that the weight cannot exceed 100-200 pounds per square foot. Which we all laugh because I weigh more than that and if I stand on one foot I will exceed the weight limit.
How would 4 inches of concrete offer enough resistance to stop the weight of the upper floors. A weight which is increasing?
Originally posted by scully222
You are claiming that the collapse gains energy as it falls. That defies physics, sorry. Where is the extra energy coming from, something would have to be applying it. Remember, energy is not gained or lost, it only changes form. What could have added to the energy? I'll let you figure that one out.
You are claiming that the collapse gains energy as it falls.
As the object accelerates (usually downwards due to gravity), the drag force acting on the object increases, causing the acceleration to decrease. At a particular speed, the drag force produced will equal the object's weight . At this point the object ceases to accelerate altogether and continues falling at a constant speed called terminal velocity (also called settling velocity). An object moving downward with greater than terminal velocity (for example because it was thrown downwards or it fell from a thinner part of the atmosphere or it changed shape) will slow down until it reaches terminal velocity.
In physics, a force is any influence that causes an object to undergo a certain change, either concerning its movement, direction, or geometrical construction. In other words, a force is that which can cause an object with mass to change its velocity (which includes to begin moving from a state of rest), i.e., to accelerate, or which can cause a flexible object to deform. Force can also be described by intuitive concepts such as a push or pull. A force has both magnitude and direction, making it a vector quantity. Newton's second law, F = ma, was originally formulated in slightly different, but equivalent terms: the original version states that the net force acting upon an object is equal to the rate at which its momentum changes.
the original version states that the net force acting upon an object is equal to the rate at which its momentum changes
That defies physics, sorry.
Where is the extra energy coming from, something would have to be applying it.
Remember, energy is not gained or lost, it only changes form.
What could have added to the energy?
I'll let you figure that one out.
Originally posted by liejunkie01
Do not forget about acceleration due to gravity and mass increasing due to more floors collapsing which causes more force to be falling down.
Originally posted by psikeyhackr
All of that blather about physics and no mention of energy required to destroy supports strong enough to hold the mass for 28 years
Originally posted by Varemia
reply to post by ANOK
Last I checked, static floors are not meant to be able to resist falling floors. Never heard of a building designed to resist its own moving weight falling in non-uniform ways. I mean, that's like saying a piece of glass that's two meters wide should be able to resist another piece of glass the same size falling on it, all because it could resist it when it was laid flat.
Originally posted by esdad71
reply to post by ANOK
Core + floors + outer perimeter walls. They were 'sagging' which means that gravity is pulling the tons of material it cannot distribute. It was, in part of the building, falling into itself. When it finally gave way, there was nothing to hold it. It is very simple and there is no need for even 7th grade physics.
It was not one floor that caused it, it was one floor that initiated it. Big difference. Once one floor is removed, the design and development that went into the building is out the window. There were will structural damage.Distribution, even distribution, is what allows a marvel like this to be built.
The dampers were the last line.
Originally posted by Varemia
reply to post by ANOK
Lots more kinetic energy in a falling floor. A floor in a building is meant to hold against static forces that are distributed evenly among the rest of the floor. A moving, uneven kinetic force is practically impossible for any building to compensate for. The floors weren't made of elastic, after all.
Originally posted by maxella1
Originally posted by Varemia
reply to post by ANOK
Lots more kinetic energy in a falling floor. A floor in a building is meant to hold against static forces that are distributed evenly among the rest of the floor. A moving, uneven kinetic force is practically impossible for any building to compensate for. The floors weren't made of elastic, after all.
What's happening to the north side of this building?
Originally posted by VeritasAequitas
reply to post by Varemia
Then, please explain why that is the only side of the building with glass breaking...Disinfo if I've ever seen one.....They are quite clearly the glass breaking from BOMBS! When was the last time a building has ever fallen simply on it's own? What about Larry Silverstein saying they decided to 'pull' Building 7 for safety reasons?
killtown.blogspot.com...
Don't you dare pull some cock and baloney excuse about my source isn't reputable. Prove that it doesn't mean that, or if you can't it's up to you to find your own source. There are several more.
Also if you take one of my debunking tactics, granted that Building 7 was a controlled demolition, there would not have been enough time to set up the bombs impromptu the day of. The bombs MUST have been set up prior to the event, which raises it's own questions...edit on 25-5-2012 by VeritasAequitas because: (no reason given)
Originally posted by Varemia
Originally posted by maxella1
Originally posted by Varemia
reply to post by ANOK
Lots more kinetic energy in a falling floor. A floor in a building is meant to hold against static forces that are distributed evenly among the rest of the floor. A moving, uneven kinetic force is practically impossible for any building to compensate for. The floors weren't made of elastic, after all.
What's happening to the north side of this building?
The glass is breaking and the entire face is deforming. There's nothing unusual there.