Jump to content

Purdueenginerd

Full Member
 View Profile  See their activity

  • Posts

    886

  • Joined

  • Last visited

  • Days Won

    5

 Content Type 

Everything posted by Purdueenginerd

  1. Purdueenginerd
    Additional comment: I went back and looked at a few photos from earlier in construction. I'm not totally convinced shoring is the issue here. Im still at my office, so when I go home, I'll get into my blind speculation.
  2. Purdueenginerd
    You just gave me a heart attack. I have a light gage building of similar height and construction that's topping out soonish. Let me just say, from the imagery I can see -- theres not a lot I can discern. But I will comment on the quote above, which involves shoring. Typically (though not always) steel decking can support a live load (ie, people), but can't support the wet, uncured concrete weight (dead load) without additional shoring. Typically for this style construction, the shoring is designed by a subconsultant that the contractor hires. Once the concrete cures then it effectively "adds" strength, or can self support without the shoring. The shoring is subsequently removed and construction proceeds. Getting into the weeds here, but this is the load tables both the contractor and their subs would have access to http://vulcraft.com/catalogs/412 (PDF warning) and if you go down to the load tables. You'll see every single deck has a table of its capacity... followed by another table of its "Maximum Construction Clear spans". For Example go to page 30, you'll see in some of those configurations, the deck can only span 5-6 feet before needing shoring (during construction). Obviously, I dont have their span tables or deck drawings so I cant comment on if their shoring was sufficient.. however looking at the photos. I dont see shoring on the level below the collapse. Thats not unheard of, but not that common. Generally you want to shore 2-3 levels. I also dont see shoring on the area to the right, though its not clear if that area was to receive concrete decking. Was the contractor dumb enough not to install shoring? -- I'd be genuinely surprised if that was the case... but contractors have surprised me in the past. Maybe more likely is that the shoring got bumped out of place (or improperly installed) which lead to collapse during concrete placement.
  3. Purdueenginerd
    Just shy of 1 million dollars for the contract amount seems quite low for what has been shown in renderings, IMO.
  4. Purdueenginerd
    Yep! @Luminare you got it. Think of it it like a concrete pump extension. Primary pump is a street level and it booms up to a certain point. In order to actually get the concrete where you want it to go. You could either have the main boom swinging around or just pump it to a secondary boom and get it where you need it to go.
  5. Purdueenginerd
    Thats a great photo!
  6. Purdueenginerd
    A few years ago, I commented on a very small project I was actually involved with. Within 6 hours I had the architect, the owner e-mail me and my bosses that they recognized me and told me to shush. I was embarrassed. A lot of projects and/or clients that I work with end up on this site. I either don't comment on those articles, or very very sparingly and typically on items not related to the actual construction. Though, I secretly hope one day that @hindesky catches me in the act at a construction site on one of his bike rides, I'll fess up if I'm in a photo of his. Anyway, thats why I generally don't post my photos, even for projects i'm not involved in at all. Don't want to piss anyone off
  7. Purdueenginerd
    Disaster struck the moment they signed that contract!
  8. Purdueenginerd
    It is a bit unusual at this stage of the game. Unless theres another small structure going next to it, or soemthings going with the foundations (or, depending on the construction, the slab-on-grade). I did look up the firm. http://powerliftfoundation.com/ They seem to specialize in foundation repair. But they do perform some new construction it seems.
  9. Purdueenginerd
    Not sure actually. Do you see any of the brick veneer cracking? or any evidence of windows that have broken?
  10. Purdueenginerd
    Indeed! Good eye!
  11. Purdueenginerd
    I'll probably agree with @Luminare on this one. Consider me biased though. When you start getting that high, the stuctural engineering of items associated with wind loads get more and more challenging. A spire to me, is a structural member that has to be accounted for. That being said, I understand the Pro-Sears tower/Willis Tower position on occupied floor.
  12. Purdueenginerd
    Sorry @H-Town Man, I was off by a few months.
  13. Purdueenginerd
    I actually dont know how accurate Emporis. I'm not sure how they would have access to the contractors fees. for your second question. Yes. A lot of it can depend on interior and exterior finishes etc... a lot depends on finishes, difficulty of construction, and of course how fast the owner wants it. If the contractor has to throw a bunch of extra people on it to complete it quicker, then the owner is going to pay more.
  14. Purdueenginerd
    There is still an older 1930's era post office at the site. Go back to my comments in May 2018 and you'll see the aerial shots of it.
  15. Purdueenginerd
    One thing Intown does well is their combination of Brick Veneers/Eifs/Stucco. I'd still be skittish of purchasing a stucco facade home, but I do think that combo is attractive. These houses are similar to the ones being built on the west side of Cottage Grove, Also an in-town development.
  16. Purdueenginerd
    Yeah, I've been pretty impressed by this development. Little structural engineering tidbit here. The original building is a pre-fab metal building. These buildings are common for warehouses and small factories. Now what makes them kind of interesting is that companies that manufacture these pre-fab metal buildings design them right up to the limits of the code: At the time of construction. This is important, because if a metal building was put up in 1980, the entire wind resisting system would have (likely) been designed right up to 99 percent utilization, in accordance to the code at the time. Fast forward to 2019. The Engineer would have been changing the wind profile of the building and changin the occupancy category. Two items that trigger and update of the wind resisting system of the building. For a building like this: That is expensive! I've had a few projects with these metal buildings that never got off the ground once the real costs started to dawn on owners. I think my favorite story with metal was when owners purchased a prefab metal building in 2002, but didnt build it. Then in 2018, tried to build it. CoH didnt allow the permit with drawings signed in sealed over a decade ago until it was validated under modern code provisions. I remember our fee to upgrade the building was sufficiently high that the owners elected to sell the old metal building to someone under less restrictive wind-code and just buy a brand new one. Anyway, long story short, neat and likely difficult project.
  17. Purdueenginerd
    I reside about 5 minutes from this development, I know the developers were on the local neighborhood facebook group scheduling and discussing a hard-hat tour a few days ago. If I see any photos online I'll bring them over.
  18. Purdueenginerd
    Looks like theyre doing a little bit of green streets/water retention system at the front there. Thats nice.
  19. Purdueenginerd
    Ive had design projects that were broken into Phase I and Phase II... and by the time drawings got issued for both, the owner/contractor elected to start with Phase II. Though in this case, I think @urbannizer is correct.
  20. Purdueenginerd
    @LuminareGreat map. Do you need help with this? Theres a bunch of smaller projects in Midtown/heights, etc forums that arent necessarily in the "going up" forum.
  21. Purdueenginerd
    I dont believe its as simple as consumer preferences. Though that dynamic does play into some peoples decisions--- I think the more real reason is merely economics. Single Family homes inside the city are still relatively cheap compared to cities of similar size. In my opinion, that depresses demand for condominium housing.
  22. Purdueenginerd
    I love it - Great photo! I have all those P200 Series pencils as well. However I dont use them as often, more of my field pencils. I'll have to check out the Pentel graph 1000.
  23. Purdueenginerd
    Yep, Ive definitely ridden by you on Strava in the past @hindesky . I'm too chicken to reveal my name here... but if I see you on strava i'll shoot you a message and say hello.
  24. Purdueenginerd
    My preferred pencil for Calcs and hand sketches. https://www.amazon.com/Pentel-GraphGear-Automatic-Drafting-PG525A/dp/B0006HXQXA/ref=pd_nav_hcs_rp_3/132-6079608-3184022?_encoding=UTF8&pd_rd_i=B0006HXQXA&pd_rd_r=5911a193-1dc9-4a8e-a9ed-f011b52fcb4f&pd_rd_w=zk5q2&pd_rd_wg=JorHd&pf_rd_p=e2b07937-4c65-432e-8b25-e6411ed7f503&pf_rd_r=AR9E0YTJ07MKC91FFTM0&psc=1&refRID=AR9E0YTJ07MKC91FFTM0 I have a 0.5, 0.3, 0.7 mm, 0.9mm pencils. For pens I use the Pilot Precise V5s, I have multiple colors. I have a weird process that I have to exhaust all the ink in a pen before starting on the next pen. My pens get beat up as a result, but my system works haha.
  25. Purdueenginerd
    "I Put a building within a building! TV's on all the walls!"
×
×
  • Create New...