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Strategies & Market Trends : LastShadow's Position Trading

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To: james-rockford who wrote (41637)	9/11/2001 8:03:06 PM
From: Ira Player	Read Replies (1) of 43080

Not my area of expertise, however, I had a friend explain some of this to me in the past...the last time these buildings were attacked..... Building of this size have a few constraints that have to be met: 1. Lower floors must support higher floors...therefore upper floors must be as light as possible or the lower floors design become impossibly "strong" and are not cost effective to build. 2. The lower floors have the most support (obviously), but have walls that "give" (not structural), allowing energy from an explosive device to be channeled outward, therefore released without sufficient focused force to destroy the support structure. (most of the damage is "cosmetic") This is why attacking from the ground level doesn't work. It takes a really big bomb. 3. As you move up the building, more of the support is "built into" the walls and structure. This efficiency is required to reduce the weight. However, now there is no "cosmetic" damage. All damage is structural. From his description, there is a minimum explosive force required to destroy a building and there is an optimal location for any given size explosive. If an explosive is not large enough to destroy the building, exploding it higher will cause the most damage, since these floors are structurally weaker. Once the amount of energy is reached where destruction is possible, the "optimum location" moves down the building with more explosive force. The idea is to damage the building as low as the explosive force you have can cause structural failure. This allows all of the potential energy of the concrete and steel above the explosion to become kinetic energy that causes a cascaded overloading of successive floors. Not a pleasant subject...... Ira

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