This is one of the “spiral drill thingies” I was talking about in the last post I made on the Sun-Times demolition. Also, here’s a movie of the “spiral drill thingies” (.mov, 504k)
You can see in the last photo that there is just a tiny bit of the wall leftover from the old Sun-Times building. It seems like most of the efforts of the construction crew are not focused on clearing rubbage from the site and starting the new construction.
See also:
» Just a Little Chunk (02.26.05)
» Moonlight at The Sun-Times Construction Site (02.23.05)
» Sun Times Construction Site at Night (02.17.05)
» By Evening The Scene Had Changed (02.12.05)
» And Then There Was One (02.11.05)
» Sun-Times Destruction Update - It’s Coming Down FAST! (02.01.05)
» Action at the Sun-Times (01.21.05)
» Wabash Avenue is Gone (01.20.05)
» Sun Times Park (01.14.05)
» Documenting the Sun-Times Building Destruction (01.13.05)
» That’s One Way to Take It Down (12.29.04)
» Sun-Times Demolition Continues (11.29.04)
» Sun-Times Demolition, or Lack Thereof (11.05.04)
» Sun-Times Building to Trump Tower Transformation (10.29.04)
» Sun-Times Building Empty, Employees May Strike (10.18.04)
» Make Way for Chicago Trump Tower (03.19.04)
9 responses so far ↓
1 andrew // Mar 6, 2005 at 9:15 am
old sun times foot print.
2 Chris // Mar 6, 2005 at 4:34 pm
Hey, whats the weather like in Chicago this time of month?
3 Joe#3 // Mar 7, 2005 at 11:41 am
Those spiral drill thingies are called caissons.
4 Rance // Mar 7, 2005 at 3:07 pm
Does anybody besides me wonder if they did a good job of mapping the tunnels before the started sinking those pilings? Or are we going to have a repeat of the Flood of ‘92?
5 rachelle // Mar 7, 2005 at 3:09 pm
i was wondering.. what exactly are they doing with those “caissons”? why is most of the drilling done in those metal tubes… but then like in the video they’re just drilling in the ground? i obvs dont know anything about construction.
6 David // Mar 7, 2005 at 4:04 pm
A caisson is a shell that keeps stuff out of the hole. Usually they’re used in water (like to build bridge supports) to keep out water while the foundation is excavated and constructed.
Also, rebar, which you asked about the other day, is the skinny ridged metal bars that you see lying around. It’s used to stiffen concrete. You’ll see them put it in the middle of a concrete form and then pour the concrete around it.
Thanks for having such a great site about Chicago. You great pictures were part of the inspiration for me recently moving here. Keep up the good work!
7 rachelle // Mar 7, 2005 at 4:08 pm
ohhhh. that makes sense. i thought joe meant that cassion was the name of the drill thing. but it’s the name of the thing they’re drilling in! makes sense with rance’s comment.
hope you like chicago, david!
8 Richard // Mar 8, 2005 at 10:10 am
Not to get too technical, but rebar doesn’t exactly “stiffen” concrete. Concrete its self is inherently good at resisting compressive forces (pushing together). Steel is inherently good at resisting tensile forces (pulling apart). So, combing the two results in a very efficient product, reinforced concrete.
9 rachelleb.com // Mar 23, 2005 at 10:09 am
Drilling
Most of the action at the Trump Tower construction site right now is drilling. Everywhere. The top three photos above were taken in the morning. The bottom photo is the same hole but in the evening. If I understand…
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