Eng-Tips is the largest forum for Engineering Professionals on the Internet.

Members share and learn making Eng-Tips Forums the best source of engineering information on the Internet!

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

Recent content by Enable

  1. Enable

    RFEM - the effective length is not defined

    Because this will seem like I must be completely insane or the biggest a-hole in the world, based on effort I put into the attached PDF, I must be clear I did this almost entirely for the fun of going through the math. I have lost my touch with analytical Bayesian methods and this gave me a...
  2. Enable

    Rebar rust staining on concrete soffit

    I suppose on one hand I should commend you for being proactive on things. That's something most people do not do but should. On the other hand, if you are not an engineer you should not be deciding anything by your lonesome. If you are concerned about the problem then you should retain a local...
  3. Enable

    RFEM - the effective length is not defined

    I’m glad about your follow-up posts as I was a bit worried after your initial response. My intention was to blend a bit of seriousness with a bit of humor by using Bayes' theorem in this way. I happily accept the challenge to continue our investigation (though you’ll need to give me a bit – no...
  4. Enable

    Conversation starter: How heavily do you rely on computational tools?

    1: 0% 2: 0% 3: 10% 4: 30% 5: 60% Most of my stuff is one off weird things in existing structures where modelling accurately is difficult and setting up sheets for automation takes longer than to do it by hand. Plus one off so will never use it again. Instead of excel though I use R for my...
  5. Enable

    RFEM - the effective length is not defined

    To simplify a bit, we can note that P(B|F) is likely to be 0 with the exception of legitimate adolescent females on the younger side. However, since the audience of this forum is generally older and at least university aged, I think we can just safely put P(B|F) as 0 in this case. For P(B|M) we...
  6. Enable

    RFEM - the effective length is not defined

    (Two part post due to attachment limitations): Given the thought that has been put into this thread, I feel we ought to be slightly more precise with our probabilistic derivations. And since we are using probabilities to represent degrees of belief (a la Bruno de Finetti) we should be explicit...
  7. Enable

    Low Concrete Testing

    If you believe their is a risk to life safety (e.g. construction failure due to low strength) you absolutely have a professional obligation to do such things. I would not think a footing would tend to lead to such an issue, but we are not aware of the particulars, and it very well might. As I...
  8. Enable

    Low Concrete Testing

    I might consider restricting the rate at which they can build considering the reduced strength of the footing (if you think that the strength is really required for the loads and not simply selected from a table as a correlate of durability) and issue a note to the GC saying that it is a...
  9. Enable

    Attachment to Existing Terra Cotta

    I would probably specify in-situ testing in a variety of panels with a few different conditions (e.g. some centered, some closer to edge, etc.). That's our usual course when we're outside published tables, which is not an infrequent occurrence. If you don't have that opportunity at the design...
  10. Enable

    External anchorage of reinforcement - is this feasible?

    Sounds like OP's case will develop tension in the bar that will exceed the bars ability to develop that tension capacity if it's not otherwise anchored. This occurs at free edges of balcony slabs and the like where we have a large line or point load (and bar area varying across the length). In...
  11. Enable

    Shoring OSSJ with wood?

    For this kind of situation I've generally used post shores at a convenient location beyond the wall, and installed blocking friction fitted b/w chords. Similar to Bones setup in this thread. If you require additional stability you could use frames or PERI MP props w/MRK frames. EDIT - You'll...
  12. Enable

    House Review - Site Visit without report?

    I’ve been a contractor far longer than I’ve been an engineer, but that experience taught me something I feel may be prophylactic for some in this thread. You can’t stop crazy people from doing crazy things or hot heads from doing hot head things. If someone is the type to sue at the drop of a...
  13. Enable

    Minimum Aggregate Size for Slab on Grade

    As a contractor I'll sometimes use pea gravel (10mm) in areas of high congestion or those that are difficult to vibrate and where self-consolidating concrete is not an option. But none of that is applicable to a slab-on-grade. I would expect a 3/4" max aggregate size for most slabs-on-grade...
  14. Enable

    shoring strategy

    Can you span a distributing member (e.g. a nice stiff W-section) to something around the repair area (e.g. shear wall), which you can in turn rest the shores on? You have to take the load down at some point so there is no magic. We either transfer at the level we're working on or we try to hang...
  15. Enable

    Spalled Concrete

    I probably could have been clearer with those statements. But @BridgeSmith has is right. Passive Shoring and Active Shoring are the technical terms sometimes used to distinguish shoring that is merely placed to handle any loads that redistribute during the repair (Passive Shoring) and shoring...
See more

Part and Inventory Search

Back
Top