Posted by Franz [24.149.37.138] on Wednesday, December 23, 2015 at 22:00:10 :
In Reply to: steel in wtcs. form article on construction posted by Kaegi [76.22.23.236] on Wednesday, December 23, 2015 at 19:21:50 :
Trust me, I remember the job well from the French made giant chain saw that cut down to bedrock so the cut could be loaded with Bentonite slurry to hold back ground water till rebar could be dropped in and the slurry displaced by concrete and reused. After 9-11 there was considerable concern on the water integrity of the basement walls because the lower concrete couldn't be vibrated due to vibration causing mixing of slurry and concrete.
Towers 1 and 2 were called Nelson & David for the Rockefeller brothers who made many dollars on the project. They weren't alone, many NYC Locals took buyouts to ignore things like foreign steel and hang it. The steel arrived on an island in the harbor cut, shaped, punched and painted and each piece of the erector set was numbered. Due to space limitations all steel arrived in sequence by truck only hours before it went into the air. 1 missing piece of steel could shut that job down for hours if not days.
Nothing unusual about A-36 in a building, and the Japanese were top notch in steel back then. US Unions and regulations prevented Bethlehem, the company that built Golden Gate Bridge in Pennsylvania from being able to take the job at even a break even price. Same situation pretty much exists today in Japan, and steel comes from China at least for a while. Steel always comes from the low bidder, and has for the last 100 years.
Something is DAMN WRONG with the United States way of doing things.
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