It looks like you're using an Ad Blocker.
Please white-list or disable AboveTopSecret.com in your ad-blocking tool.
Thank you.
Some features of ATS will be disabled while you continue to use an ad-blocker.
originally posted by: testingtesting
9/11 brought me to ATS I watched loose change and ï believed in the conspiracy but now after reading the many threads on the subject I don't believe in the conspiracy angle anymore.
originally posted by: testingtesting
9/11 brought me to ATS I watched loose change and ï believed in the conspiracy but now after reading the many threads on the subject I don't believe in the conspiracy angle anymore.
The more I investigated, the more apparent it became that NIST had reached a predetermined conclusion by ignoring, dismissing, and denying the evidence. Among the most egregious examples is the explanation for the collapse of WTC 7 as an elaborate sequence of unlikely events culminating in the almost symmetrical total collapse of a steel-frame building into its own footprint at free-fall acceleration. I could list all the reasons why the NIST WTC reports don't add up, but others have already done so in extensive detail and there is little that I could add. What I can do, however, is share some thoughts based on common sense and experience from my fourteen years at NIST.
Structural System 1 and 2 World Trade Center used the so-called tube within a tube architecture, in which closely-spaced external columns form the building's perimeter walls, and a dense bundle of columns forms its core. Tall buildings have to resist primarily two kinds of forces: lateral loading (horizontal force) due mainly to the wind, and gravity loading (downward force) due to the building's weight. The tube within a tube design uses a specially reinforced perimeter wall to resist all lateral loading and some of the gravity loading, and a heavily reinforced central core to resist the bulk of the gravity loading.. The floors and hat truss completed the structure, spanning the ring of space between the perimeter wall and the core, and transmitting lateral forces between those structures. The tube within a tube architecture was relatively new at the time the Twin Towers were built, but has since been widely employed in the design of new skyscrapers. In fact most of the world's tallest buildings use it, including: The Sears Tower (1450 ft) The World Trade Center Towers (1350 ft) The Standard Oil of Indiana Building (1125 ft) The John Hancock Center (1105 ft)
originally posted by: wmd_2008
a reply to: Doctor Smith
Find an impact calculator on line see how much force a 1000 ton floor slab dropping 12 ft would have then stfu.
originally posted by: Cauliflower
1964
originally posted by: cardinalfan0596
a reply to: wmd_2008
Everyone in the Truth Movement are engineering experts and know precisely how things work. Richard Gage is their teacher.