Twinsanity02 Posted March 8, 2019 Share Posted March 8, 2019 41 minutes ago, keaton said: With apologies to the group for lurking so long: I live in the Rice and am watching this thing slowly come up. We were sent this about the concrete pour slated for this weekend: You could sell tickets. Charge by the minute or half hour. Can't bring your own beverage and jack the price up. Could make some serious money. Quote Link to comment Share on other sites More sharing options...
H-Town Man Posted March 8, 2019 Share Posted March 8, 2019 Question to the engineers here... if when the pour is complete and dry a week from now they discover a crack, does that mean they have to chip the whole thing out and start over? (Ducks) 5 Quote Link to comment Share on other sites More sharing options...
Luminare Posted March 8, 2019 Share Posted March 8, 2019 1 hour ago, H-Town Man said: Question to the engineers here... if when the pour is complete and dry a week from now they discover a crack, does that mean they have to chip the whole thing out and start over? (Ducks) Not an engineer, but have done a few submittals where as architects we look at stress samples to make sure that the mixture used follows the standards set in the specifications for the building. All concrete cracks at some point. Its not a matter of if, but a matter of when and under what kind of load, and are the cracks enough to induce failure throughout the whole pour. There are tolerances that are allowed for cracking and to what degree the severity of the cracks are. Before they even start this pour they have probably, somewhere on site, poured a test core that essentially just sits on site. They let it settle and cure for the allotted time provided in the specifications. They will do multiple mixes and cores as well. On smaller jobs some GC's will try to weasel their way out of it, but for a skyscraper were the risk is severe, they will not mess around (at least you hope). Probably should get @Purdueenginerd to explain further, but this is from an architect in training's perspective and experience thus far. 6 Quote Link to comment Share on other sites More sharing options...
Purdueenginerd Posted March 9, 2019 Share Posted March 9, 2019 Thanks @Luminare for the call out! Everything you stated is correct 6 hours ago, H-Town Man said: Question to the engineers here... if when the pour is complete and dry a week from now they discover a crack, does that mean they have to chip the whole thing out and start over? (Ducks) Just to add, like many things it depends on the location of the crack, size of the crack and the type of crack. All concrete cracks. The curing process causes a volumetric shrinkage of concrete (more specifically the cement crack). There's ways to mitigate it. The rebar/steel is one way. Your concrete mix design is another. For large placements like a matt foundation controlling temperature might also be part of the plan. The reinforcement in a foundation for a high rise is so dense that its unlikely to get significant cracking, at least discernible cracking to the human eye. When I get called out to look at cracks in a structure, the crack pattern, location, if its planar or faulted, and its width can tell me a lot about the cause and what to do as an engineer. But to answer your question. not often will a crack force the engineer, architect, and owner to ask(or demand) the GC to start over, if the problem can be solved within reasonable engineering judgement. But lets say that Matt Foundation is just absolutely covered in cracks, 1 foot apart, all relatively wide. This would be alarming. And after a lot testing, finger pointing, analysis, and probably litigation, the contractor might have to start over. On the other hand if there was 1 small crack, 30 feet long, not faulted in that entire foundation. I'd say epoxy inject it and move on. Funny enough I had a project a couple of years ago where the contractor cast a lot of non-structural decorative concrete for some area paving; and it cracked quite a bit. It didnt comply with the architects contract documents so the contractor had to tear it out and start over. So... the answer is : it depends! 8 Quote Link to comment Share on other sites More sharing options...
keaton Posted March 9, 2019 Share Posted March 9, 2019 (edited) EDIT: They are starting the street closures early, so the concrete pour is on. I'm going to do a timelapse from my window. Should be pretty nifty to watch. Edited March 9, 2019 by keaton 8 Quote Link to comment Share on other sites More sharing options...
brijonmang Posted March 9, 2019 Share Posted March 9, 2019 4 hours ago, keaton said: EDIT: They are starting the street closures early, so the concrete pour is on. I'm going to do a timelapse from my window. Should be pretty nifty to watch. They pushed it back to this afternoon because of the chance for lightning. 2 Quote Link to comment Share on other sites More sharing options...
Popular Post keaton Posted March 9, 2019 Popular Post Share Posted March 9, 2019 Okay so I got a little excited and set up a live stream. Enjoy. 9 2 Quote Link to comment Share on other sites More sharing options...
bobruss Posted March 9, 2019 Share Posted March 9, 2019 where are all of the concrete trucks? 2 Quote Link to comment Share on other sites More sharing options...
keaton Posted March 9, 2019 Share Posted March 9, 2019 1 minute ago, bobruss said: where are all of the concrete trucks? I haven't seen any arrive yet. Still setting up the pumpers 1 Quote Link to comment Share on other sites More sharing options...
keaton Posted March 9, 2019 Share Posted March 9, 2019 Happy to do it! I can zoom into areas if there's something in particular you want to see. I have some limited zoom options. 3 Quote Link to comment Share on other sites More sharing options...
Luminare Posted March 9, 2019 Share Posted March 9, 2019 1 hour ago, keaton said: Okay so I got a little excited and set up a live stream. Enjoy. Per the live feed. Concrete Trunks are coming in hot. This will finally begin. 1 Quote Link to comment Share on other sites More sharing options...
keaton Posted March 9, 2019 Share Posted March 9, 2019 And the first batch of concrete is starting now! A little color that may not come across on the camera feed: there are probably 100-200 workers scattered around the site and spectators lined along the new parking garage to the north. 2 Quote Link to comment Share on other sites More sharing options...
Highrise Tower Posted March 9, 2019 Share Posted March 9, 2019 Few blocks away drinking a beer. I see the lane closures. Will head that way soon! Cheers! 🍺 2 Quote Link to comment Share on other sites More sharing options...
Highrise Tower Posted March 9, 2019 Share Posted March 9, 2019 (edited) double post Edited March 9, 2019 by ekdrm2d1 Quote Link to comment Share on other sites More sharing options...
bobruss Posted March 9, 2019 Share Posted March 9, 2019 So it appears they start in the middle and work out. Isn't the matt about eight feet thick? One other question. Do they stay in the center until it reaches that height and then move out to the sides? 1 Quote Link to comment Share on other sites More sharing options...
Highrise Tower Posted March 9, 2019 Share Posted March 9, 2019 Keaton, Are you on the Market Square garage? See you soon 1 Quote Link to comment Share on other sites More sharing options...
Highrise Tower Posted March 9, 2019 Share Posted March 9, 2019 Reposting the live stream for new page 5 Quote Link to comment Share on other sites More sharing options...
keaton Posted March 9, 2019 Share Posted March 9, 2019 5 minutes ago, ekdrm2d1 said: Keaton, Are you on the Market Square garage? See you soon I am not, I'm watching from the Rice - but it's had a nice share of folks up there! Perfect temperature after a gloomy morning 2 Quote Link to comment Share on other sites More sharing options...
Highrise Tower Posted March 9, 2019 Share Posted March 9, 2019 Here. Re: Smell It smells like exhaust from all the cement trucks. This is amazing! wow wow Quote Link to comment Share on other sites More sharing options...
Highrise Tower Posted March 9, 2019 Share Posted March 9, 2019 Oh man.. people in MST are in the pool watching. Keaton, I think I see you at the Rice hotel.. by the two trucks by any chance? 1 Quote Link to comment Share on other sites More sharing options...
Highrise Tower Posted March 9, 2019 Share Posted March 9, 2019 (edited) double post Edited March 9, 2019 by ekdrm2d1 Quote Link to comment Share on other sites More sharing options...
Highrise Tower Posted March 10, 2019 Share Posted March 10, 2019 (edited) @brijonmang It was nice to meet you! Edited March 10, 2019 by ekdrm2d1 2 Quote Link to comment Share on other sites More sharing options...
keaton Posted March 10, 2019 Share Posted March 10, 2019 3 hours ago, ekdrm2d1 said: Keaton, Are you on the Market Square garage? See you soon I was on the south end for a bit! sorry I missed you! 2 Quote Link to comment Share on other sites More sharing options...
Popular Post brijonmang Posted March 10, 2019 Popular Post Share Posted March 10, 2019 Had the opportunity to attend the mat pour party for Texas Tower earlier and got a few shots from the 23rd floor of Calpine Center. Great views all around! Also got to meet @ekdrm2d1 and his lovely mother. Thanks for waiting for me to come down! @bobruss to answer your question, I was told the rebar is 12' deep. ^^^Bonus points if you can spot @ekdrm2d1 on the garage. 15 1 1 Quote Link to comment Share on other sites More sharing options...
Popular Post Highrise Tower Posted March 10, 2019 Popular Post Share Posted March 10, 2019 Photos I took this afternoon. The spectators on top of the garages made it feel like it was a parade/event. Good stuff. My mom is visiting from NM. Figured we could do lunch/beer and visit a Hines event too 14 Quote Link to comment Share on other sites More sharing options...
Highrise Tower Posted March 10, 2019 Share Posted March 10, 2019 Heading in for the night. Here's a screen grab of the night time mat pour 7 Quote Link to comment Share on other sites More sharing options...
bobruss Posted March 10, 2019 Share Posted March 10, 2019 (edited) Keaton, thanks for the great coverage! This is almost as good as being there. This is one of the first Half live cams that I can remember.. Salud! Edited March 10, 2019 by bobruss 5 Quote Link to comment Share on other sites More sharing options...
Popular Post keaton Posted March 10, 2019 Popular Post Share Posted March 10, 2019 (edited) Getting closer! edit: adding the livestream link: https://www.youtube.com/watch?v=bbxNPmxAp2A Edited March 10, 2019 by keaton 11 Quote Link to comment Share on other sites More sharing options...
Popular Post keaton Posted March 10, 2019 Popular Post Share Posted March 10, 2019 Just like that: the concrete pour is complete! 10 1 Quote Link to comment Share on other sites More sharing options...
Popular Post keaton Posted March 10, 2019 Popular Post Share Posted March 10, 2019 The whole thing in 38 seconds. I will turn around the livestream as a timelapse eventually too -- it has the wider view with the concrete trucks and streets around it. 13 3 Quote Link to comment Share on other sites More sharing options...
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