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  1. Keith_1

    Built on Wrong Property

    This is what title insurance is for. All she has to do is file a quite title action. If the developer pushes this, she can sue for encroachment and demand that the property be restored to its original state. The Developer is SOL. If I was her I would tell the developer to pound sand. The...
  2. Keith_1

    Baltimore Bridge collapse after ship collision

    I feel bad saying this, but the bridge failed perfectly.
  3. Keith_1

    Rebars Sever Corrosion Effects

    As a Developer and VP of a GC I have installed nothing but hot dipped galvanized on exposed areas in coastal construction in South Florida, maintaining coatings goes a long way to prevent costly mediation. I have had subcontractors try to spray paint it with cold once or twice, they never did it...
  4. Keith_1

    Parking Garage Collapses

    Corrosion and subsequent failure of unbounded PT tendons due to the use of salt to deice used to be a big problem in northern parking garages, but that was a long time ago.
  5. Keith_1

    Spot Sampling of Fresh Concrete per EN 12350-1

    As a super for a GC I would never tell them when I was going to pull a sample, in my experience after you make them tear down a sheerwall or column or two the shell guys get it into their heads not to add a bunch of water. Once everyone understands that they can either do it right or do it over...
  6. Keith_1

    Miami Beach, Champlain Towers South apartment building collapse, Part 18

    Most Elevators in this type of building just had a battery with a relay that would return them to the lobby in case of the loss of power.
  7. Keith_1

    Miami Beach, Champlain Towers South apartment building collapse, Part 18

    The failure of this structure is nothing more than having unqualified persons in charge of a midrise construction, nothing more and nothing less. You do not have to be a PE, GC or a AIA member to see that this structure was in trouble for years. I don't think the owners should have gotten a...
  8. Keith_1

    Miami Beach, Champlain Towers South apartment building collapse, Part 16

    It is a retaining wall with sheet piles it is not structura. Damn non of you have actually designed or built anything.
  9. Keith_1

    SF Tower settlement Part III

    In the photo that epoxybot posted there appears to be at least 3/4" of conduit running thru deck / beam connection. Does anyone know what deck system they used? I'am starting to think that this building has incurable problems that would not matter if were constructed on s correct foundation. I...
  10. Keith_1

    SF Tower settlement Part III

    Epoxybot, that is a really scary photo Trying to pour that with everything tied is close to physically impossible even with a great plasticizer mix, that is alot of steel to get the aggregate through. That crack is getting close to the bars and that is not a good thing, because that beam...
  11. Keith_1

    Miami Beach, Champlain Towers South apartment building collapse, Part 15

    Here is the timeline, 10 years ago there was a problem that everyone new about but were told it would be 10 million to fix it, which the Board thought would result in a few hundred dollars in increased fees, and that little sum posed a threat to their little fiefdom, so instead of loosing the...
  12. Keith_1

    Miami Beach, Champlain Towers South apartment building collapse, Part 15

    [highlight #F57900]I am from the land of clay soils and a monolithic concrete slab poured with reinforced thicker edges is common place here to support residential wall loads. I agree a 'Grade Beam' would have been a better solution to transfer the wall loads to the piles, but Champlain Towers...
  13. Keith_1

    Miami Beach, Champlain Towers South apartment building collapse, Part 15

    thermopile, the one thing that you missed was that 12" section is called out at an elevation of 2' 2" which above whatever the slab elevation is. It really does not matter what the purpose of that 12" section because it does not transfer to the foundation. 2 is not 0,learn how to read a plan. I...
  14. Keith_1

    Miami Beach, Champlain Towers South apartment building collapse, Part 15

    NuleDuke, so you have pile 12' on center, that shows nothing in relation to the perimeter wall. I actually know the order of construction, so I know that the sheet piles were installed before the piles, and I also know that there is not a pile under that wall.
  15. Keith_1

    Miami Beach, Champlain Towers South apartment building collapse, Part 15

    thermopile, There is no such thing as a "down turned slab" if it where it would be a footer or a grade beam. Slabs are on the ground, decks are suspended. There is an 8" wall running from the West corner of the building to the East corner with #5 bars horizontal and vertical @ 12", and a...
  16. Keith_1

    295 Retaining Wall Failure in Bellmawr, New Jersey [Follow Up]

    This is why you need a good Geotech, at least Millenium towers was complicated .. this is just stupid. Me without a Geotech or Civil is like [banghead].....[hammer]......[flush]
  17. Keith_1

    Miami Beach, Champlain Towers South apartment building collapse, Part 15

    There are alot of design issues that exists, especially with lap lengths and coverage with balconies, but they don't result in the collapse of abuilding. There is a huge difference between some bad temperature steel, or a few bad bars on a balcony going bad, and the total failure of the entire...
  18. Keith_1

    Miami Beach, Champlain Towers South apartment building collapse, Part 15

    I just don't have time to check this every day. I do agree that if the Beams were weekend of course the slab was, but they serve two totally different purposes. If this were a localized point of failure that was not at grade or subgrade, and resulted in this type of failure it would raise...
  19. Keith_1

    Miami Beach, Champlain Towers South apartment building collapse, Part 15

    @k[highlight #729FCF]eith I always wondered could they have done better with the load bearing of the pool deck up against that South wall simply by placing a second wall in front of that existing South wall and up agaianst the south wall that that now the pool deck can rest on top of that 2nd...
  20. Keith_1

    Miami Beach, Champlain Towers South apartment building collapse, Part 15

    This is not a post tensioned building. What I was saying is that is that there is no hard connection between the wall and the deck in that type of construction In PT there is a at least 5/8th of an inch between the block or curtain and the deck. When you pull tendons you actually lift the deck...

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