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 cowski 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: EngDM
  • Order by date
  1. EngDM

    Max Shims under Steel Beam Bearing Plate

    Could the contractor not just keep the beam down at plate elevation, and add nailers to the top of the beam instead of shimming the underside?
  2. EngDM

    Thread embedment required for bolt in tension

    I'll go through the links more in depth once the fabricator comes back with their ideas, but from the discussion here, it sounds like a 2" deep 1"Ø hole tapped into a 1 1/2" square block is going to be more than sufficient, especially since the block is welded between another 2-5/8" thick plates...
  3. EngDM

    Thread embedment required for bolt in tension

    Interesting, so the sloped threads apply an outwards pressure and if the nut is too thin then it just splits apart?
  4. EngDM

    Pilaster minimum reinforcement

    For concrete columns you can go as low as 0.005 * Ag (in accordance with CSA) provided you reduce your Mr and Pr accordingly. Since the Mr is largely from the steel, you might be able to do this here.
  5. EngDM

    Stars, upvotes, and likes.

    That was a like, there is usually a tally on the right side of a post with an up/down arrow.
  6. EngDM

    Do you guys defer steel connections? Should it be on the contact?

    It's common where I practice to defer steel connections for any steel building.
  7. EngDM

    Thread embedment required for bolt in tension

    I think the reason the fab is looking to in-house it is due to lead times and increase costs to import it to Canada, and they can't find it locally. Thank you for the suggestion nonetheless. I will look into this, appreciate the link!
  8. EngDM

    Thread embedment required for bolt in tension

    The load isn't huge, but it is for a critical piece of the structure (supports a cast concrete balcony). I was going to make the tap like 2" long (1"Ø threaded rods), but if there is no real straightforward procedure to determine thread strength for standard mild steel I may have to think of a...
  9. EngDM

    Stars, upvotes, and likes.

    Conveniently, upvoting is disabled in this thread...
  10. EngDM

    Shear flow for indeterminate beam

    So to clarify, if you wanted the compression chord force at the RHS, you would take Mmax/c and NOT the sum of M1/c + Mmax/c. In your sketch above on June 11th you have F + F' = chord force, but the moment due to F is postive and F' is negative, so their top chord loads are in opposite directions...
  11. EngDM

    Shear flow for indeterminate beam

    I had a thought that ran parallel to the current discussion. I understand that OP is not talking about bracing. I had a question regarding chord force to further my understanding, in relation to chord force and lateral bracing requirements...
  12. EngDM

    Thread embedment required for bolt in tension

    We are trying to come up with a detail for supporting a threaded rod in tension, and due to material availability we are going the route of tapping our own holes in a solid square stock. I guess the square stock should be a high strength steel as opposed to 44W then? Or could I leave enough net...
  13. EngDM

    Thread embedment required for bolt in tension

    Hi all, A simple question that I have never really thought about, but if you have a bolt in tension are there any checks as far as the threads are concerned? Is there a codeified minimum number of threads (or length) to engage before getting full capacity of the bolt in tension? Is it just to...
  14. EngDM

    Shear flow for indeterminate beam

    Yes I know this thread is for shear flow, however OP has described the chord force as the shear flow. Lateral bracing requires bracing 2% of the compression chord force. So my original question is in relation to that.
  15. EngDM

    Shear flow for indeterminate beam

    This brings up an interesting thought in my head. When bracing a cantilever beam going into negative bending at the support (to decrease Lu) we typically size it for 2% of the factored compressive load at the brace point, which we have been determining as negative moment / depth of beam. If F...
  16. EngDM

    Shear flow for indeterminate beam

    I think the F's in his sketches are the ones taken in the slice just before midspan, and the ones just after midspan would flip direction.
  17. EngDM

    Stars, upvotes, and likes.

    Why does this forum have 3 different ways to show appreciation on a post? I understand the stars and likes, since the stars are tallied on a per-post basis, but the likes and upvotes accomplish the same thing... I have to know which score to min-max.
  18. EngDM

    Wall reactions

    Yes perfect, I found this on the weekend. In case this thread comes up in a google search later by someone with a similar problem, here is what I did to get the behaviour I wanted (reactions on piles). Draw in walls from corner to corner. Go into edit>shells>divide and choose 8x1 or whatever...
  19. EngDM

    Impact of Abandoned Pile on Pile Group Behavior

    Typically we use 3Ø spacing from abandoned piles, unless the geotech allows us to go closer. The thought is that the existing piles, although being abandoned, still disturbed the surrounding soil when they were installed. Best to just stay clear, especially for a pile that's capacity is from...
  20. EngDM

    box culvert analysys

    Agreed, especially with the rails coming in at a near 45° skew.

Part and Inventory Search

Back
Top