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  1. AHaddad1

    Design work for use in another state

    State of Washington insight on Stamping/Signing Rules & Regulations : www.skellengerbender.com/publications/PDFs/construction_design/stamping.pdf "It is essential that design professionals learn to identify stamping dilemmas before the document is stamped and released" A common theme, like...
  2. AHaddad1

    Design work for use in another state

    Here is a good thread that deals with the same topic from the other side, the side of the stamping PE in the state the project will be built. www.eng-tips.com/viewthread.cfm?qid=227582
  3. AHaddad1

    Design work for use in another state

    Hokie66, There are firms out there that do not follow the code requirements line by line, and why is that one might ask? the answer is that those same people wrote the code.
  4. AHaddad1

    Design work for use in another state

    "Saying that "nor any court should see anything wrong with that" is poor advice" I agree, eventhough the statement was not intended as advice. "The mere act of trying to circumvent licensing requirements is wrong, in my opinion." I am not trying to change what the pre-existing licensing rules...
  5. AHaddad1

    Design work for use in another state

    JNJ, I don't know the details of this case; however, I will sight a real example on what I mean: An Owner for a project hired an Architect, the Architect went and hired a Structural Engineer from Canada. When it came to build the project. The owner asked the Architect to fire the Structural...
  6. AHaddad1

    Design work for use in another state

    JNJ, It up to the PE in the state that will review and stamp the project, I am sure he will have to do a thorough review of the drawings and calculations before stamping anything. In this case the Liability is fully burdened on the PE of the said state and the project will become his full...
  7. AHaddad1

    Typical concrete floor slab thickness - over metal deck and bar joist?

    The first question you need to ask yourself is, what is the Fire Rating on the floor or Roof. Based on the fire rating requirement, then you can start picking and chosing. The second question is do you need to use Light Weight Concrete since the latter can improve the fire rating requirement...
  8. AHaddad1

    Design work for use in another state

    "They indicated to me that the area where the home will be constructed in rural and does not have a building code or require stamped drawings" You have to make sure that a PE stamp is not a requirement if you are interested in the project. Call the City Hall in the city where the house will be...
  9. AHaddad1

    Concrete Bearing

    Here is the quick sketch (Not to Scale) For simplification, I tried to illustrate the One Way behavior as I understand it under bearing.http://files.engineering.com/getfile.aspx?folder=13f28b0a-04b4-4826-b12f-f21e62b1b7d9&file=Bearing_and_Shear_Planes.pdf
  10. AHaddad1

    Concrete Bearing

    hokie66, The Factor formula SQRT(A2/A1) derivation is very simple but may have research papers that I am not aware of. I will draw you a sketch and attach it in my next post when I have some time to show how the formula can easily be derived.
  11. AHaddad1

    Concrete Bearing

    hokie66, SlendeBeam was asking about the factor SQRT(A2/A1) Where, A2 = is the Area of the supporting member and A1 = The Area of the contact bearing. This factor is expressed in the AISC ASD 9th Edition for steel columns base plate design. Say you have a steel column base plate over a...
  12. AHaddad1

    Timber column repair with epoxy

    steve, There might be a way to replace the bottom part of the column if it is very bad. I the attached PDF pictures I have used epoxy to latch a steel channel to the sides of a 14"x14" wood column to be able to cut the column at the floor below and install a transfer system. I have done that...
  13. AHaddad1

    Concrete Bearing

    Allow me to reiterate and expound on my last post: 1) Diagonal Tension Failure in Long Span Beams. 2) Shear Compression Failure in Short Span Beams. 3) Splitting or True Shear Failure which almost eleminates the diagonal tension concept. Based on which the 0.35fc was established. 4) The Upper...
  14. AHaddad1

    Concrete Bearing

    hokie66, There are three types of concrete failures 1) Diagonal Tension Failure in Long Span Beams. 2) Shear Compression Failure in Short Span Beams. 3) Splitting or True Shear Failure which almost eleminates the diagonal tension concept. In the above case, I believe we are closer to 3) than...
  15. AHaddad1

    Blast loads/explosion requirements

    Mike, You have touched on a very sensitive subject that not many are prevy to. I doubt anybody can give you answers in a public domain where the answers to you questions are Confidential & Priviliged. The Corps of Engineers have their own software that cannot be used by anybody unless they...
  16. AHaddad1

    seismic bracing of pipes

    It all depends on the pipe diameter and support spacing. Lateral bracing every other support is not out of the ordinary. There are some cases for large diameter pipes that the racks are say 30 feet appart, in that case the lateral bracing is provided at every support. The key issue is whether...
  17. AHaddad1

    Concrete Rebar Placement Drawings

    I believe the contractor should do shop drawings for his own protection, because when you to observe the slab reinforcement before the concrete pouring operation and there is something wrong, then he has to fix everything before he is allowed to pour the concrete. This usually will end up...
  18. AHaddad1

    Concrete Bearing

    I cannot recall the specific research papers that lead to this conclusion; however, I do offer the following insight. The allowable bearing pressure is 0.35fc due to shear cone failure of the supporting concrete, say below a column base plate for example. This was proven via sample testing and...
  19. AHaddad1

    Proof Load vs. Ultimate Load?

    JJOO, I am not familiar with ASCE48 nor do I have a copy right now to check it for you; however, I do offer the following insight. A factor of safety of 2 from the nominal tension stress should always be used for the Anchor Bolts unless these safety factors are compensated for in the load...
  20. AHaddad1

    Do STM struts need to be symmetric about strut axis???

    The Strut and Tie method is clearly explained under Appendix A of the ACI code, I like to call it the tied arch method. As long as your span to depth ratio is less than 4, the deep beam analysis aka strut and tie method as defined in Appendix A of the ACI 318 applies (I do not have the book...

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