Framing 9/11, 3rd Edition contains all of the material that was present in the first two editions. The 3rd edition seeks to make a very good book even better. One of the readers of the first edition of this book considered it to be the best work that has been written on the subject of 9/11. Plasco Building's collapse was nothing but another experimental proof that top floors of a high-rise building collapsing just for structural fire-induced failure can crumble-while falling – only a mass beneath just a bit larger (at most) than its own!
DEMOLITION PHYSICS KNOCK DOWN BUILDING PLUS
And yet – apart from the specific reason (arson or casualty) that provoked the fire and will be the object of investigations by local authorities-this tragedy can be very interesting worldwide also for scientific and physical purposes, above all for thousands architects, engineers, physicists, and many relatives of 9/11 victims, who challenged the " official " version of 9/11 WTC collapses – as a result of a structural failure due to the combination of fires plus airliners impacts – and supported the thesis of total collapse of 3 WTC towers (Twin Towers plus WTC7) as mainly caused by controlled demolitions of their basements through blasting charges. However, many sources now indicate as the likely cause of the accident the non-compliance (Iranian sources reported at least 30 safety warnings by authorities to Plasco's directors!) of safety regulations and the presence of too many inflammable materials inside, due to the attendance of many clothing workshops. Firemen battled 3 hours and half against flames, as they propagated up and down from initial location (9 th floor) but at the end their battle was lost, and flames succeeded in destroying metal and concrete frames, starting the final and fatal collapse of 11 stories of apartments, making them precipitate inside the 4 floors of empty patio (internal courtyard used as shopping center) Plasco Building was built on 1962, and at that time it was a modern, " high-rise ", 15 floors hotel.
§ A great tragedy occurred on Januat Tehran, where 21 persons (including firefighters) died, and many have been severely injured, after the blaze, and subsequent collapse, of 11 burning stories of Plasco Building. Plasco Building's collapse close scrutiny is totally compatible with a fire-induced structural failure, and cannot but indirectly confirm that 12 collapsing floors of WTC1 on could – at most – destroy no more than 15 stories beneath, and therefore the actual reason of the total collapse of 3 WTC towers on was a controlled demolition of their basements through blasting charges. A brief historical survey of several fires of high-rise buildings is being provided here. Plasco's 15 stories total destruction by fire is no surprise, as physics is proving that a fire-induced collapse of top floors of a high-rise building can crumble a mass below but a bit larger – at most-than the one of the collapsing stories (here 6 top stories, whose initial fire spread to almost all 11 stories, all finally falling into almost centrally empty 4 floors at ground level, inside a patio/mall shopping center). This demolition science toy requires 3 AA batteries (not included).The recent tragedy of Plasco Building at Tehran can highlight and clarify some important physical laws, rules and criteria, to distinguish between a fire-induced structural failure and a controlled demolition of a building. Children discover principles of physics, explore momentum, gravity, and more! This giant tower demolition kit features one-touch detonator with super cool Quad-blaster, 22 wall parts, 10 floors/roof tops, 22 footing clips, and detailed instructions.
Demolition Lab for Kids – Mega Smokestack means the destruction to the sky-high tower, but constructive look into science behind demolition processes. This unusual engineering toy allows children to construct the 3 feet tall industrial tower and knock it down, all 4 walls at once, with strategically placed blasters. What a Bam! With Demolition Lab for Kids – Mega Smokestack kids can experiment with destruction as much as they want! This SmartLab demolition science toy is a building set, a science kit and a hands-on experimental lab at the same time.
0 kommentar(er)
