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Originally posted by FDNY343
ALL of the unprotected steel failed. The stuff with the concrete, survived.
Originally posted by bsbray11
Originally posted by FDNY343
ALL of the unprotected steel failed. The stuff with the concrete, survived.
Those external "columns" were the size and shape of pipes and had to burn for a full 24 hours for that to even happen.
If anything, looking at much, much larger columns and yet only a
Originally posted by bsbray11
Originally posted by FDNY343
ALL of the unprotected steel failed. The stuff with the concrete, survived.
Those external "columns" were the size and shape of pipes and had to burn for a full 24 hours for that to even happen.
If anything, looking at much, much larger columns and yet only a
Originally posted by GenRadek
First bit of math: Fire started 11AM, first collapse at 1:29AM equals about 2 1/2 hours for this to first happen. also it should be known that we do not know how long was the entire floor subjected to the flames, but by 12AM everything above the 21st floor was burning.
Next collapse: 1:37AM, south face above the 21st floor. So from fully engulfed in fires at 12AM, to first collapses at 1:29AM is about 1 1/2 hours. Notice, NO planes hit it, no bombs, no thermites, no demo charges, no 767 inside. Just a regular fire with "office supplies" and such burning.
Originally posted by FDNY343
The fire did not cause the collapse to begin at the columns, it started at the trusses. The trusses pulled in the exterior columns. If you had read the NIST report, you would know this.
Originally posted by Six Sigma
Just a simple question for truthers:
Why do the building codes require us to insulate steel?
Originally posted by bsbray11
To give the companies that make the fireproofing material some business.
Originally posted by Six Sigma
So, fireproofing companies must have been in on it too!!!
I thought so.
Originally posted by bsbray11
Fireproofing is a precaution. Precaution for what? Well that's the million-dollar question.
Originally posted by Six Sigma
So, you don't know why code requires fireproofing on steel?
Any other truthers know why?
Originally posted by bsbray11
From everything I've read the fireproofing is only to delay the effects of heating, namely sagging and deflection due to thermal expansion.
Originally posted by Six Sigma
Originally posted by bsbray11
From everything I've read the fireproofing is only to delay the effects of heating, namely sagging and deflection due to thermal expansion.
Thank you sir, this is all I was looking for. You can continue your pissing contest with the others.
Have a great day.
It has nothing to do with trusses exerting inward "pulling" forces on perimeter columns.
Blamed on an electrical malfunction, the fire began about 2 a.m. behind one of the 1,236 exhibits awaiting the opening of the Housewares show. Many booths displayed paints and thinners (now outlawed) that acted as accelerants. Only about 10 percent of the building's 10-acre interior-mainly the trash area-was protected by a sprinkler system. More than 400 firefighters were hampered by frozen and malfunctioning hydrants in a losing effort to save the building. Steel supports in the ceiling melted. Molten aluminum flowed through expansion joints in the floor of the main exhibit level to start another fire two floors below. At 2:40 a.m., just 35 minutes after the fire was discovered by a housekeeping crew, the roof collapsed. There was one casualty, a security guard whose body was found in a stairwell.
Originally posted by GenRadek
I can see its just not clicking up there for you, is it?
Why didnt Windsor Tower collapse totally? Gee didnt you notice that LARGE STEEL REENFORCED CONCRETE CORE and CONCRETE technical floors that arrested the collapse of the entire building?
So please bsbray, explain to us in your great wisdom, what caused the large heavy steel trussed roof of McCormick place to fail and collapse in 35 minutes? Cause according to you, steel needs not to be protected, and it takes days for regular fires to affect steel structrues. I want to hear from you what caused it to happen?