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Purdueenginerd

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Everything posted by Purdueenginerd

  1. Purdueenginerd
    A few years ago I had a repair project at petrochemical facility where we had a mass-pour with a high-early strength concrete. A 2' thick concrete roof deck for a below grade structure. After the concrete set (to give you context on how fast it was setting, I could walk on one side of the roof while the other side I would sink into), the contractor basically flooded the top of the concrete with 3 inches of water. The next morning, I recorded the water temperature at 120ºF. It was stunning to me how much energy it put out curing. The contractor indicated they had a fire break out several years back because of extreme exotherming of the setting concrete.
  2. Purdueenginerd
    agreed. thats an awesome photo. The volume capacity of a concrete truck is about 10 cubic yards fully loaded. I'm counting about 25-28 trucks total lined up. Thats a lot of concrete.
  3. Purdueenginerd
    The entire building is about 10k sq feet.
  4. Purdueenginerd
    There are gonna be some sick neon lights for sure on this facade.
  5. Purdueenginerd
    I know a few actually who do. I do collect old AISC steel construction manuals (though I use them for work still on occasion) Right now I have 1st, 5th, 6th, 7th, 8th, 9th, 13th, 14th, 15th edition. My 1st edition is dated January 1930. Found it for about 60 dollars online. The 5th, 6th, 7th, 8th, 9th I have found at Half-Price Books over the years, each for about 15-20 dollars. 13-15 Ive used in my professional career so I bought them when they were/are still active codes.
  6. Purdueenginerd
    Yes! You want the concrete and rebar to act as a composite material. The rebar deformation patterns were standardized in 1947. Before then there was a lot of variance on rebar deformation patterns and a lot of proprietary shaping by manufacturers . Even older concrete structures (Normally pre-1920's) have "smooth" bar.
  7. Purdueenginerd
    its 13 pounds per linear foot. Excellent paper weight material!
  8. Purdueenginerd
    Fun Fact! #3 bar, Diameter 3/8" #4 bar, Diameter 4/8" #5 Bar, Diameter 5/8" #6 Bar, Diameter 6/8" #7 Bar, Diameter 7/8" #8 Bar, Diameter 8/8" #9 Bar, Diameter 9/8" (also 1 in^2 in cross area) - Pre 1940's, #9 bars would traditionally be square 1"x1" bars. #10 Bar, Diameter 1.27" (They stopped using the previous numerical system) #11 bar, Diameter 1.41" #14 bar, Diameter, 1.693" #18 bar, Diameter 2.257" Here's a picture of #18 bar I took the other day
  9. Purdueenginerd
    Crane all the way up these morning.
  10. Purdueenginerd
    This comes off as a little needlessly accusatory, FYI. Anyway, to settle the population density of Houston here's an interactive map, from 2014. https://www.arcgis.com/home/webmap/viewer.html?webmap=85a821d13a4f4502a85f71c4aae8bae8
  11. Purdueenginerd
    I would consider midtown houston to be part of the city center. I know when I lived there I routinely used the light-rail to get to downtown and the med center. I would imagine a not-unsubstantial percentage of midtown residents commute to either downtown or the med center and contribute to the pedestrian traffic of both. If theres going to be signficant residential growth in the city center, Midtown and South Downtown are primed for the most growth, in my opinion.
  12. Purdueenginerd
    Indeed, a lot of the themes are covered in the book, with the exception of the tunnel system: though I'm not sure I agree with the author in regards to his opinion regarding the tunnel system.
  13. Purdueenginerd
    Been to a few job sites where I have to do this. I think its a good idea. Stretching and flexing is certainly cheaper than an OSHA recordable from pulling a muscle. I like it.
  14. Purdueenginerd
    Tried going down that way with my wife a few weeks ago. Got frustrated with all the construction around the med district and cut back through midtown...
  15. Purdueenginerd
    I tried looking up some more updated press on this one. https://setexasrecord.com/stories/513240744-construction-worker-alleges-negligence-caused-fall-through-floor-at-holiday-inn-site Only thing new this indicates is that this confirms they were in the middle of a concrete placement when the collapse occurred.
  16. Purdueenginerd
    Thought i'd share this book. I burned through it on one flight from Houston to Chicago last weekend without falling asleep. https://www.amazon.com/gp/product/0865477728?pf_rd_p=183f5289-9dc0-416f-942e-e8f213ef368b&pf_rd_r=ZVY9XHD60ZJT1W7AJ7RB Nonetheless, little dated, but Houston is mentioned a few times, in a negative light. There's some good data points on pedestrian infrastructure and policies to create more walkable neighborhoods. I found the book rather compelling.
  17. Purdueenginerd
    I might be subject to recency bias in my opinion of the typical projects Gensler peforms, at least from my anecdotal standpoint. I'm not trying to convey theyre snobby, I apologize-- that wasnt my intent. I guess every time I've worked with Gensler its typically a huge multi-national firm as the owner. Hopefully thats not enough to doxx me ; ). That's why i'm generally surprised they would go for and win the bid for a parking garage, even one that's automated. My only thought would be that something else is attached to this project that hasnt been revealed yet. Alternatively, perhaps Gensler just has a lot of experience with this automated garages in other markets and thats why they won.
  18. Purdueenginerd
    I will say, that "high density" parking also means the "cost" and "revenues streams" of parking may be increasing in downtown houston, relative to land. Surface lots obviously being the cheapest, followed by pre-cast garages, and now we have potentially higher capacity garages. I'm sort of skeptical though, despite all the losses of parking lots in Downtown, I find it absurdly easy and affordable to find parking whenever I have a meeting downtown or there's an event I want to go to. Though I may be outside of the norm, Normally when I go to a rockets game or concert... I try to park several blocks away to pay $0 after 6 pm on the streets and walk the remainder. This garage may be marketed to the convention crowds. @Luminare I dont know. Even an "Auto" parking garage seems beneath Gensler's typical project. Do we know if this a full block or half-block. The rendering kind of looks like a half-block.
  19. Purdueenginerd
    Hiring Gensler seems like over kill for a parking garage... Just saying....
  20. Purdueenginerd
    Foundation design on this building with the abundance of drilled piers and a matt foundation can mean a couple of things. One is that the soil may be not as great. Another issue is that if the building is tall and narrow, and "relatively" light, The wind uplift/overturning movement may be a governing load case which could require some of the piers to incur tensile loads. Concurrently the opposite side of the building will take more compression loads.
  21. Purdueenginerd
    wow. This should be reported to 311.
  22. Purdueenginerd
    man... thats a lot of piles.
  23. Purdueenginerd
    whats the significance of Rowdy? I see his graffiti everywhere all over the city... Even written with a sharpie on traffic signage.
  24. Purdueenginerd
    https://en.wikipedia.org/wiki/Skanska#Major_projects
  25. Purdueenginerd
    Hows the traffic in and out of there? The HEB in the north heights was a hot mess when it opened, and at times difficult to get in and out of
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