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www.controlled-demolition.com...
Aided in the structural analysis and structural design of the project by Tryck Nyman Hayes, Inc. of Kingston, Washington, NSE hydraulically jacked the tower up against the balanced tension of the stays, removed the base insulator, inserted a steel and concrete surrogate insulator and lowered the tower back down. Two (2) weeks earlier, NSE had engaged CDI to design a plan to fell the 1,202’-6” tall structure without damage to the helix house 25’ away.
Operating under severe time constraints, CDI was unable to ship U.S.-made linear shaped charges for the project. A CDI representative flew to Buenos Aires where the local explosives supplier had expressed confidence in their ability to melt and pour pentolite explosives in CDI furnished copper sheathing to a density specification provided by CDI.
Inadvertently, and without damage to the helix house, a far more aggressive means of felling large guyed towers was demonstrated. Subsequent analysis of the structural release sequence of the guys has yielded predictable data which CDI intends to use in the felling of large, cable-stayed towers in the future.
Originally posted by CaptainObvious
reply to post by IvanZana
A CRITICAL ANYALYSIS OF THE COLLAPSE OF THE WTC TOWERS 1,2,& 7 FROMA AN EXPLOSIVES AND CONVENTIONAL DEMOLITION INDUSTRY VIEWPOINT
www.jod911.com...
every implosion ever performed has followed the basic model of obliterating structural supports on the bottom few floors first, "to get the structure moving".
The basic idea of explosive demolition is quite simple: If you remove the support structure of a building at a certain point, the section of the building above that point will fall down on the part of the building below that point. If this upper section is heavy enough, it will collide with the lower part with sufficient force to cause significant damage. The explosives are just the trigger for the demolition. It's gravity that brings the building down.
Originally posted by Griff
I know if I ever own a building and need it demolished, Mr. Blanchard is the LAST person I would call, since he has NO clue what he is talking about.
Originally posted by RazrZ
There was a special on ABC that called him and his partner the "Beavis and Butthead of Implosion".
Originally posted by Damocles
gimme a call griff. ill make it go away for you
Since their inception in the late 1800's, blasting engineers have understood that building implosions work best when the forces of gravity are maximized.
Originally posted by Damocles
i think what separates a guy like me from a guy like him is ive always said i could be wrong