NYC 9/11 Public Portal Document
LfiGinoers..
mptying a Hazardous ‘Bathtub’
hen the World Trade Center was buat,T^i^ia^ sank a
JI of steel mesh and concrete into the grbuhd TO the
cavation could be done safely. The stru; tui^ Inuit inside
pt the wall — what the engineers call th 2*arttob —in
ice. Now engineers wonder how to clea
.thout risking the stability of the bathtub
undations of nearby buildings.
1 World Trade
Center (collapsed)
2 World Trade
-''Center (collapsed)
eWorld I ■/
4 World
Trade s Trade Center
Center s (collapsed)
(partially i
collapsed}^
Carrion Hots!
.J 0lin€
COMMUTER
RAIL (PATH)
TUNNEL
^—TIEBACKS
WORLD TRADE
CENTER (buildings
.BATHTUB
' WAU .......................... V shown above)
: -^e bathtub, shown
; at right, is under s^asB^ “L ••vj. . !
pressure from earth
perimeter
and water outside it.
WORLD vihl^S
liiustrattons
byDanFoiey
<A'
PA™
...ss*
; Diebacks .......................
•-Jiebacks anchored the
; bathtub wall until base- ■A ''WSs’-
; jBent structures were
^Juilt, then were cut Hudson ' \ - "-‘WTj©
t-iOose. It may be neces-
J'feary to replace them. Be-
River
I ■W
• PUi’^A-
; 3ow is the debris thought BATHTUB .!
'■50 be within the unsup-
' ported bathtub
wall- ..
HOLDING THE UNE
Grrx fi
The fill boundary
The bathtub wall is is shown approxi
bordered on the mately here.
DEBRIS
FROM
west by fill........ .. -
COLLAPSE
RU
Hudson River Area of
detail
WATER MAY
COLLECT
HERE
PATH TUNNEL BEDROCK
-Sources.- Maeser ffiOeeiffe ConstJling Engineers: PRESSURE
• *The Building of ManfiSttan.'byDonaJaA. Macltay FROM EARTH
(Harper ai^ Row. 1B87): ffie Port Au&wiiy AND WATER The New York Tiraa
NYC-WTC_OOO152344
Pnoe-MoPt/
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