Category: Commentary, Critique, and Response

photos_and_videos/TimelinePhotos_dJ9jhts2Ng/75010622_491870861409809_742597895563247616_o_491870858076476.jpg PLS DON’T WASTE MY TIME OR OTHERS WITH BLDG7 CONSPIRACY THEORY

(Yes I know more that you do – as usual )

The primary lessons are:

(a) as usual, only one structural member failed, leading to the cascade, and the structural failure was due to accumulation of heat over many hours. The external damage had no effect on the collapse. It was just the fire.

(b) engineering standards and calculations for steel structures were too loose given the possible duration of fires.

(c) ordinary office combustibles provide long term sources of heat at slow burn necessary to accumulate heat in structural members.

(d) if the sprinklers had been active it’s unlikely the combustibles would have been able to produce accumulated heat, and therefore sprinklers must not be dependent upon external sources of pressure and power in the event of a catastrophe. ie: external infrastructure is a weak link not a discount, and structures must meet closer to greek standards (10x max expected load) than the max load calculations at present, and harmonics make the matter far worse. Make buildings more expensive and there will be fewer of them, and better. Require resident ownership in urban centers and end rental income. Expand underground transport, police the cars aggressively, and if necessary create class -based cars requiring escalating positive behavior.

(PS: Why do you think I know that a civil war punishing urban areas is so easy to win? Anyone overloading emergency services in any urban area will succeed. Multiple urban areas cannot provide mutual support under adverse conditions. Without communication and data, organization of response is all but impossible -bottlenecked.)PLS DON’T WASTE MY TIME OR OTHERS WITH BLDG7 CONSPIRACY THEORY

(Yes I know more that you do – as usual )

The primary lessons are:

(a) as usual, only one structural member failed, leading to the cascade, and the structural failure was due to accumulation of heat over many hours. The external damage had no effect on the collapse. It was just the fire.

(b) engineering standards and calculations for steel structures were too loose given the possible duration of fires.

(c) ordinary office combustibles provide long term sources of heat at slow burn necessary to accumulate heat in structural members.

(d) if the sprinklers had been active it’s unlikely the combustibles would have been able to produce accumulated heat, and therefore sprinklers must not be dependent upon external sources of pressure and power in the event of a catastrophe. ie: external infrastructure is a weak link not a discount, and structures must meet closer to greek standards (10x max expected load) than the max load calculations at present, and harmonics make the matter far worse. Make buildings more expensive and there will be fewer of them, and better. Require resident ownership in urban centers and end rental income. Expand underground transport, police the cars aggressively, and if necessary create class -based cars requiring escalating positive behavior.

(PS: Why do you think I know that a civil war punishing urban areas is so easy to win? Anyone overloading emergency services in any urban area will succeed. Multiple urban areas cannot provide mutual support under adverse conditions. Without communication and data, organization of response is all but impossible -bottlenecked.)