Tek-Tips is the largest IT community on the Internet today!

Members share and learn making Tek-Tips Forums the best source of peer-reviewed technical information on the Internet!

Register Log in
  • Congratulations MintJulep on being selected by the Eng-Tips community for having the most helpful posts in the forums last week. Way to Go!

Search results for query: *

  • Users: hope9010
  • Order by date
  1. hope9010

    Post-tensioning tendons - proximity to opening

    Kootk - not a problem.
  2. hope9010

    Post-tensioning tendons - proximity to opening

    Please no one take offence, as none is intended, but may I make a gentle request - if you are going to continue with this string, but along lines that are not relevant to my question, perhaps you could start a new string, as every time you send a new message it shows up on my email. Thanks. Much...
  3. hope9010

    Post-tensioning tendons - proximity to opening

    I think this has wondered far off my topic, but thanks for the comments about my original question. Much appreciated.
  4. hope9010

    Post-tensioning tendons - proximity to opening

    Yes they are un-bonded tendons. I am posting this all for another engineer in the office, so thank you all for your comments, which I will relay to him, including about how to make the opening. It is great to have comments that stay focused on the question at hand. I will convey all these...
  5. hope9010

    Post-tensioning tendons - proximity to opening

    Ingenuity - we have x-rays. The hole will be enlarged by core drilling, not sawcutting. There are top and bottom rebars in the slab at the sides of the opening so jack hammering down from the top of the slab to locate the tendons would not work.
  6. hope9010

    Post-tensioning tendons - proximity to opening

    I sent my last message (in response to BARetired before I read TehMightyEngineer's message. I think TehMightyEngineer's is saying essentially the same as I said.
  7. hope9010

    Post-tensioning tendons - proximity to opening

    That is what I was thinking, but bearing in mind that the opening is to be enlarged in both the north-south AND the east-west directions, the tendon may exert a lateral force on the concrete within the length of the enlarged opening (depending upon where the bend on the tendon is located...
  8. hope9010

    Post-tensioning tendons - proximity to opening

    There is an existing opening 51" x 24" thru an existing post-tensioned slab. They want to increase this by 1.5" each of the 4 sides, at each of a number of floors, for a larger size duct, so that the opening will become 54" x 27" (see attached). We have had x-rays taken of the tendons. We have...
  9. hope9010

    Collapse of part of 5th floor of Huston Garage

    I have read of a precast system of unusual design that stood up fine for many years and then suddenly the floor collapsed. The investigation indicated that the original design missed an issue that was critical because of the odd ball design. Some other floor structures that were built around...
  10. hope9010

    Collapse of part of 5th floor of Huston Garage

    ddudley - Very interesting. I thought from looking at the pictures that I found on the internet, that the spandrel had given way. What you say seems to indicate that may have been the case. Kind of scary that they could forget to complete the angle connections with the weld. Have you heard...
  11. hope9010

    Collapse of part of 5th floor of Huston Garage

    Does anyone know anything about the Houston garage partial collapse?
  12. hope9010

    Collapse of part of 5th floor of Huston Garage

    ...so I don't think this is anything like Eliott Lake. But I have no info on the cause of the collapse
  13. hope9010

    Collapse of part of 5th floor of Huston Garage

    ...oh, sorry ...the photo is a picture of Eliott Lake.
  14. hope9010

    Collapse of part of 5th floor of Huston Garage

    It looks like hollow core, not precast double tee. Right? Elliott Lake was also hollow core. Maybe this is a good thing to stay away from for garages. Still, I would like to know what the cause of the collapse was.
  15. hope9010

    Collapse of part of 5th floor of Huston Garage

    Has anyone heard about a reported partial collapse of the 5th floor of a precast double tee garage in Houston, Texas, in June? If so, does anyone know anything about it, like how old the garage was and whether corrosion was in any way a contributing factor? If not, what was the cause? Any...
  16. hope9010

    Topping Bond Strength on Precast Double tees

    Hi dik - where exactly did you read that the hollow core was over-spanned? I cannot recall reading that in the reports.
  17. hope9010

    Topping Bond Strength on Precast Double tees

    Right on!
  18. hope9010

    LVL wood beam column

    Just to let you all know, I contacted Boise Cascade in Canada and they have special software for Versalam, and the special properties for Canada which are different than U.S. and of course the Canadian are LSD. Also, it is Chapter 13 of CSA O86 that deals with these proprietary wood products...
  19. hope9010

    Slab-on-grade maximum pour size

    Thank you cvg. Much appreciated.
  20. hope9010

    Slab-on-grade maximum pour size

    If I may return to my original question, about whether any limit should be specified on the length of pour of slab-on-grade, to avoid slab performance issues, or excessive opening of the joint between pours when the slab dries out: Is it the consensus that there should or should not be such...

Part and Inventory Search

Back
Top