Sept 11 is comin (Dad Bless all who were lost)

OK i got this in a pm. the person who sent it to me was a letter carrier for someone else i haven't read all of it but most of it makes a lot of sense. the person i got it from was mahones the person it came from will remain anonymous but I DID NOT WRITE THIS POST I GOT IT IN A PM THESE ARE NOT MY WORDS.

You ask for a sole cause? There is none. There isn't just one reason for the building coming down, just like there wasn't just one reason the Twin Towers didn't fall. But since you seem to be the structural engineer expert here with your outrageous theories about bombs and missiles being the only things that can take out buildings, I figured you would have already known why 7 WTC fell.

First, we start off with the collapse of 1 WTC, the tower closest to building 7. Building 7 was 400 feet away from 1 and 1 was 1300 feet tall, so a good amount of debris hit the building, damaging some key areas. The major area of damage was to the front face of the building, destroying 10 stories worth of the side of the building. Also, the Southwest corner of the building suffered damage from about the 18th floor down, removing key structural parts of the building. What you need to realize, and what most of you probably don't know, is that the first 4-5 floors of this building are hollow on the inside. See the picture for what I'm talking about.

http://img.photobucket.com/albums/v624/JonesSoda/7wtc_lrg.jpg

So a good portion of the face of the building on that side was knocked out by the collapse of Tower 1. Since the building was hollow in that area, the rest was held up by trusses that transferred the weight from the center of the building to the outer columns. See here:

http://img.photobucket.com/albums/v624/JonesSoda/transtruss.jpg

This is where we start getting into the structual integrity issues of this building. The collapse of the Twin Towers inevitably caused the power to go out in the surrounding area, and what happens when the power goes out to a large building? The 9 diesel generators containing over 20,000 gallons of fuel fire up to restore power. But what happens when damaged fuel lines start pumping diesel fuel all over the place and those "small, isolated fires" that everyone was talking about get wind of it? Holy burning building Batman! And on top of that, due to the severe damage from the collapse of Tower 1, the sprinkler system didn't function properly, allowing the fires to spread.

When you look at it, the building stood for a long time after being hit with so much damage, so it should be no surprise that it collapsed at all. What is surprising to me is that it didn't collapse earlier. 1 WTC collapsed an hour and 42 minutes after being hit, 2 WTC collapsed only 56 minutes after being hit, but 7 WTC burned uncontrolled 8 minutes shy of 7 hours before it fell. That's pretty damn good considering the extent of its damage and factoring in the fact that the fireproofing on the steel columns was only rated for 3 hours.