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  #2341  
Old Posted Apr 19, 2017, 12:40 PM
chief56 chief56 is offline
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Quote:
Originally Posted by petey2428 View Post
I thought the bedrock is pretty high in new york, so you don't have to go down deep unless it's for rock anchors. For example, 1WTC in New York sits pretty much on bedrock. You don't have that condition in Chicago.

PT construction is the standard for high rise residential construction in Chicago. You can curve the tendons to avoid conflict with conduits/pipes/etc.
Allows for less reinforcing in the slab, resulting in thinner slabs and the heigher floor to ceilings people want in residential buildings.

An easy way to tell where bedrock in NYC is look where all the tall buildings are. Southern end of the island and middle.
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  #2342  
Old Posted Apr 22, 2017, 4:52 PM
officeworker officeworker is offline
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4/21

Thanks Harry!

Goodbye wood under the new Upper Wacker extension



Could there be just one more floor to put up before being even with Upper Wacker...







Anyone know what the blue poles are for?






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  #2343  
Old Posted Yesterday, 1:55 AM
Bombardier Bombardier is online now
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Quote:
Originally Posted by officeworker View Post
Anyone know what the blue poles are for?
Those are for the carpenters installing the decking to tie off to as a means of fall prevention. If you go there during a day they are placing decking, you will see the carpenters tie off to the poles.
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  #2344  
Old Posted Yesterday, 3:39 AM
The Lurker The Lurker is offline
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Last edited by The Lurker; Yesterday at 4:58 AM.
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  #2345  
Old Posted Yesterday, 12:19 PM
KWILLSKYLINE's Avatar
KWILLSKYLINE KWILLSKYLINE is online now
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Nice shots guys!
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