emarine wrote:
yes there's a few ways to detonate high explosives but none involving BB-18 fuse holders... I think it's very appropriate you share with us readers your expertise involving the technical aspects for controlled demolition of WTC 1 & 2 ... seems troofers are the only ones who know how to do it properly...
The tallest building ever taken down with explosives was the J.L. Hudson Department Store in Detroit, Michigan. This building was 32 stories in height, 15 stories less than WTC7. The contractor who did this job said it was the greatest dynamic structural control challenge the company had ever faced. The 21 man crew needed
THREE MONTHS to investigate the complex and
FOUR MONTHS to complete preparations for CDI’s implosion design. The 12 man loading crew took
TWENTY FOUR DAYS to place 4,118 separate charges in 1,100 locations on columns on nine levels of the complex. Over 36,000 ft of detonating cord and 4,512 non-electric delay elements were installed in CDI’s implosion initiation system, some to create the 36 primary implosion sequence and another 216 micro-delays to keep down the detonation overpressure from the 2,728 lb of explosives which would be detonated during the demolition.
As you can see, this project took nearly
EIGHT MONTHS from start to finish.
Now, compare this with the theory put forth by the 9/11 "truthers": That two 110 story towers were prepped for demolition with explosive charges AND THERMITE cutter charges planted on EVERY FLOOR. And, that this was accomplished in less than two weeks, AT NIGHT. The "truthers" have never explained how their mysterious "contractors" managed to do this.
Under the circumstances and given the high level of activity in and around the World Trade Center 24/7, rigging the twin towers for controlled demolition would have been IMPOSSIBLE.
Moreover, according to the 9/11 conspiracy theorists, their massive explosive matrix encompassed the entire building from top to bottom, but they have never offered a convincing, or even remotely believable, explanation for how this complex demolition system managed to survive the high speed impact of heavy jets, the fuel explosions and ensuing fires. The jet impacts and fuel explosions would have not only destroyed the continuity of the firing circuits but would have either burned or detonated any explosive charges directly in and around the impact zone.
Additionally, the detonation of rigged conventional explosives never destroys or vaporizes all the components of the demolition system. Such detonations always leave evidence in the form of wiring, circuit boards, and fragments of detonators and other components specific to rigged explosive charges. Had the twin towers been taken down with such an enormous and complex explosive system, there would have been literally thousands of such fragments throughout the rubble. Not one such thing was ever found, anywhere.
Regarding the destruction of WTC 7, conspiracy theorists would love to believe that this building also was rigged for explosive demolition. In order to advance this theory, they intentionally ignore a number of critical factors. WTC 7 was struck by heavy perimeter wall sections from the North Tower when it collapsed. Two of these strikes were deep gashes into the lower SW face and toward the center of south face. In both cases, vertical structural columns, cantilevers, and transverse trusses were severely damaged, and in some cases completely severed. These impacts by debris from the North Tower also set the fires in building 7.
The collapse of the twin towers also severely restricted the water supply to firefighting efforts at WTC7, so much so that the firefighters were never able to suppress fire in the building. The fires burned out of control for 6 hours before the building collapsed.
At 2:00pm, the fire commander on the scene at WTC 7 noticed an outward bulge developing in the SW corner between the 10th and 13th floor. He had a crew put a transit on it, and it was then that he was certain the building would collapse. About this same time, firefighters in or near the building began to feel movement of shifting floors and hear the groaning of steel. After these reports, chief Peter Hayden knew his men in the building were in danger. He then had a short discussion with Larry Silverstein. Hayden told him that the fire fighting effort would not save the building, that he was certain it would collapse. Silverstein, referring to the fire fighting effort and not the building, suggested he "pull it."
Sometime between 4:30 and 5:00pm, all the firefighters had vacated the building. Internal floor collapse began at 5:20pm which initiated total collapse. Direct evidence of internal collapse is the movement of the top floor penthouse several seconds before the global collapse began. NO FIRE FIGHTER or anyone else in the vicinity of WTC 7 reported the distinctive crack of explosive detonations like those always present in controlled demolitions of buildings.