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| Greenbuilding Archive for October 2001 |
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| 221 messages, last added Tue Nov 26 17:26:03 2002 |
[Date Index][Thread Index]
No Subject
But engineers and government officials understood that there was value =
in being much more specific and comprehensive about what materials lay =
in the wreckage.
It was important, for instance, to know as precisely as possible how =
much steel and concrete was there if a plan for removing it was going to =
be devised responsibly. That plan would allow the search and recovery =
effort to proceed as quickly as crews at the site could work. And =
although no lives could be saved directly with the plan, it would allow =
some money to be recouped for a beleaguered city from the thousands of =
tons of steel, copper and aluminum.
So computer programs were designed, old blueprints were scoured and =
individual memories were ransacked to rebuild it on paper, to determine =
how much steel and concrete and gypsum and glass were there. What =
resulted was the most detailed accounting of just what the World Trade =
Center had been made of, down to the terrazzo flooring.
And out of those early calculations has grown an intricate plan for =
removing, disposing of and, in many cases, reusing the vast amounts of =
material that crashed down with the trade center.
Nearby scrap recyclers are already expanding their operations and have =
begun the job of cutting, shearing, shredding and shipping the biggest =
volumes of metals they have ever faced. Each of the twin towers =
contained some 78,000 tons of recyclable steel alone.
The recycled steel could end up as anything from wire to refrigerators =
to automobile fenders or even I- beams for new skyscrapers, said Bob =
Kelman, senior vice president and general manager at Hugo Neu Schnitzer =
East of Jersey City, one of the scrap dealers that the city has =
contracted to do the work...
...The assessment came with a striking level of detail. It estimated =
that each of the twin towers contained 3,881 tons of steel reinforcing =
in the concrete floor slabs; 47,453 tons of vertical steel columns; =
8,462 tons of aluminum and glass on the exterior walls; 2,531 tons of =
various ceiling materials; 4,218 tons of flooring; and 31,350 tons of =
partitions or walls.
Added up, Mr. Lombardi of the Port Authority said, the total came to =
about 1,176,000 tons of debris, including about 285,000 tons of steel. =
After some rounding, the very rough figure of 1.2 million tons of debris =
was born...
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<H2><FONT size=3D2><A=20
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nytToday">http://www.nytimes.com/2001/10/09/nyregion/09HAUL.html?searchpv=
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<H2>From Torn Steel, Cold Data of Salvage</H2></NYT_HEADLINE><NYT_BYLINE =
version=3D"1.0" type=3D" ">
<H5>By JAMES GLANZ</H5></NYT_BYLINE><NYT_LINKS_ONSITE version=3D"1.0" =
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<P><IMG align=3Dleft alt=3DW=20
src=3D"http://graphics.nytimes.com/images/dropcap/w.gif";>hen the twin =
towers fell,=20
the two buildings that had once been admired for their endless =
structural and=20
architectural complexity suddenly became a heartbreaking mass grave, a =
symbol of=20
terrorism's reach, and — at a coldly physical level — 1.2 =
million tons of=20
tangled debris.</P>
<P>But engineers and government officials understood that there was =
value in=20
being much more specific and comprehensive about what materials lay in =
the=20
wreckage.</P>
<P>It was important, for instance, to know as precisely as possible how =
much=20
steel and concrete was there if a plan for removing it was going to be =
devised=20
responsibly. That plan would allow the search and recovery effort to =
proceed as=20
quickly as crews at the site could work. And although no lives could be =
saved=20
directly with the plan, it would allow some money to be recouped for a=20
beleaguered city from the thousands of tons of steel, copper and =
aluminum.</P>
<P>So computer programs were designed, old blueprints were scoured and=20
individual memories were ransacked to rebuild it on paper, to determine =
how much=20
steel and concrete and gypsum and glass were there. What resulted was =
the most=20
detailed accounting of just what the World Trade Center had been made =
of, down=20
to the terrazzo flooring.</P>
<P>And out of those early calculations has grown an intricate plan for =
removing,=20
disposing of and, in many cases, reusing the vast amounts of material =
that=20
crashed down with the trade center.</P>
<P>Nearby scrap recyclers are already expanding their operations and =
have begun=20
the job of cutting, shearing, shredding and shipping the biggest volumes =
of=20
metals they have ever faced. Each of the twin towers contained some =
78,000 tons=20
of recyclable steel alone.</P>
<P>The recycled steel could end up as anything from wire to =
refrigerators to=20
automobile fenders or even I- beams for new skyscrapers, said Bob =
Kelman, senior=20
vice president and general manager at Hugo Neu Schnitzer East of Jersey =
City,=20
one of the scrap dealers that the city has contracted to do the =
work...</P>
<P>...The assessment came with a striking level of detail. It estimated =
that=20
each of the twin towers contained 3,881 tons of steel reinforcing in the =
concrete floor slabs; 47,453 tons of vertical steel columns; 8,462 tons =
of=20
aluminum and glass on the exterior walls; 2,531 tons of various ceiling=20
materials; 4,218 tons of flooring; and 31,350 tons of partitions or =
walls.</P>
<P>Added up, Mr. Lombardi of the Port Authority said, the total came to =
about=20
1,176,000 tons of debris, including about 285,000 tons of steel. After =
some=20
rounding, the very rough figure of 1.2 million tons of debris was=20
born...</P></FONT></DIV></BODY></HTML>
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