Jump to content

Purdueenginerd

Full Member
  • Content Count

    750
  • Joined

  • Last visited

  • Days Won

    5

Purdueenginerd last won the day on April 1 2015

Purdueenginerd had the most liked content!

Community Reputation

1043 Excellent

1 Follower

About Purdueenginerd

  • Rank

Profile Information

  • Gender
    Male
  • Interests
    I work as a Structural engineer in the construction industry. I specialize in structural engineering for remodeling, renovation, and repair projects. Work for Architects, contractors, and owners. Highrises, midrises, university, hospital, residential, commercial, industrial and heavy petrochemical; I'm all over the place. My hobbies are Cycling, Traveling, reading, PS4 video games, and food; I also enjoy large construction developments, viewing construction project progress, architecture, and urban planning... which is probably why I'm on this website.

Recent Profile Visitors

5941 profile views
  1. I tried to buy in Midtown in 2014. Prices rose so fast in like 2 month period that I got priced out.
  2. First I've heard of this, I guess from a pure development standpoint it makes sense and is positive. But breaking into political discussion here a little bit, is there evidence of MLB teams using these style developments as leverage against the public for stadium subsidies? I generally oppose subsidizing taxpayer dollars for new stadiums, but that dynamic could change if said MLB team is building hotels, apartments, and a litany of other businesses.
  3. Thats interesting. Is it common for MLB teams to be in the development industry for mixed use, etc?
  4. Theyre definitely doing something with the foundations. You can see the top of the pier exposed and all the grade beams. I dont see any distress from the photos however. Interesting. Wonder what manifested so late in the project.
  5. Anecdotally my wife and I both distinguish between target and walmart. In my opinion, especially when I was younger an had less money, Target's clothing department was superior to walmart in fashion and quality. Granted its probably been like 10 years since I'e bought Any clothing there. I prefer target for other reasons. Only time I ever really go to Walmart is if I'm out of town and forgot to pack something I need.
  6. I'm just picturing a lab room full of Proton Packs from Ghostbusters and a big danger sign that says "Warning! Dont Cross the streams!"
  7. Using Emporis, between 500 and 600 feet buildings, Houston has about 18 completed high rises on that website(not counting under construction and transmission towers). At a cursory level, looks like wikipedia is mostly correct albeit their table is slightly misleading. he table should have a range, but they just put greater than or equal to. So yes, Houston has more than 18, 500 footer buildings, but between 500/600 the table is correct. https://www.emporis.com/city/101031/houston-tx-usa/status/all-buildings/2
  8. Supertalls, even in cities as Dense as NYC are rare. NYC only has 12 buildings that are over 1000 ft and 3 of them are what I would consider hyper rich residential ego trips.. As far as skyscraper breakdown, Wikipedia provided a nice table. (no idea how up to date it is) Rank City ≥1,000 ft (305 m) ≥900 ft (274 m) ≥800 ft (244 m) ≥700 ft (213 m) ≥600 ft (183 m) ≥500 ft (152 m) ≥400 ft (122 m) Total 1 New York City 12 9 14 35 69 150 255 544 2 Chicago 6 2 6 8 27 68 101 218 3 Miami 0 0 1 9 9 32 36 87 4 San Francisco 1 0 3 2 4 13 32 55 5 Houston 1 2 0 7 8 18 22 53 6 Los Angeles 2 0 1 6 9 10 17 45 7 Seattle 0 1 0 3 3 12 23 42 8 Las Vegas 0 0 0 1 8 7 25 41 9 Atlanta 1 0 2 2 6 5 24 40 10 Philadelphia 1 2 1 3 1 6 18 32 Right now, Houstons office market cant really support a thousand footer and our residential market isnt hot enough for gazillionares to fork over investment for 1000'+ Condo high rises. My personal wishlist, build a beautiful 1200' building on Block 142. Then infill every other surface lot downtown with 10-15 story buildings-- same for midtown. Also, Dallas has a 1000'+ on the drawing board right now: https://www.papercitymag.com/real-estate/dallas-smart-district-tallest-high-tech-skyscrapers-amazon-headquarters/ And for my own City Pride, I'd like Houston to retain the taller skyline
  9. Im not sure how much faster it will go. Yeah the floor plates will be simpler but... theyre going awfully fast already haha.
  10. That one might deserve its own thread wherever it subsequently is. Also, someone tell that guy with the baby stroller that his tires might be flat!
  11. @ekdrm2d1 put this on my amazon wish list the other day. https://www.amazon.com/dp/B01DMDI5XU/?coliid=I1H95VI68DMOIF&colid=U35NVB7GTF0U&psc=1&ref_=lv_ov_lig_dp_it Hopefully my wife sees it in time for my birthday
  12. Im not a super big fan of light gage. Its superior to wood framing and more uniform. But Owners sometimes dont realize there are load bearing walls in the structure. From an architectural standpoint the floor plans more or less have to be uniform. Which is great for a hotel/apartments. Its get problematic and expensive when the floor plans change from floor to floor.
  13. Houston would do itself a lot of favors regarding storm-water runoff if we had more buildings with green roofs.
  14. Fair Warning: I dont know what happened, but the reason I dont necessarily think its shoring is because of the joist spacing. The joist spacing, shown above is about 18-24". Which would be more than enough to prevent steel deck failure associated with a lack of shoring. The roof joists are spanning about 30-40' (based off google earth) which isnt too unusual. During construction, the joists could be weaker for lateral torsional buckling, if their bottom and top flange are insufficiently braced. Other baseless speculation: If a joist was poorly connected, improperly connected, or designed poorly, it could facilitate a cascading failure. Lets imagine for a moment joist spacing is 24". And we have 4" of concrete. 4"/12"*1ft*150pcf. =50 lbs/ft^2 ( or PSF) of weight. The construction live load should and could be 50 PSF. Keep note of the construction live load, thats important. The total load theoretically would 100 PSF (plus self weight). On a single joist it would 100 PSF * 2 feet (or 24") = 200 lbs/ft(or PLF). Which means the load bearing wall at each joist is supporting 200 PLF* 30ft/2 =3000 lbs. Now, Imagine one of the joists and its respective connections to the load bearing wall failed. The next joist over, immediately picks up the load. So now the single 100 PSF * 3ft =300 lbs/ft. - a 50 percent increase in load on the next two joists over. Why did I bring up the Construction Live load? Because the roof is traditionally designed for a live load of 20 psf. -- This isnt a code discrepancy, Its just something a lot of contractors dont know about. So its plausible, that contractor may have inadvertently overloaded a connection, a single or multiple joists or some combination thereof. This could have precipitated the cascade. Structural steel Column Failure: Not Likely. Load bearing wall failure: Also not likely, but I have noticed that the studs are not currently braced for weak axis bending. Weak axis bending and strong axis bending are structural topics I wont get into unless you guys really want me to haha. Again, this isnt likely unless they used a much lighter gage steel at higher elevations (not unheard of).
×
×
  • Create New...