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  1. DRW75

    Complete penetration weld Vs Full penetration weld

    Hey folks, I've always described a full depth partial penetration weld as a "full penetration weld", which is distinctly different than a complete penetration weld where back gouging is required. Are the terms Full penetration and Complete penetration completely interchangeable by code? i.e...
  2. DRW75

    Structural question related to ASME?

    Hey folks, bit of an odd question here: Is there a part of the ASME standards that relates to structures and structural design (akin to AISC)? As well, is there any discussion therein relating to material selection strategy for supporting structures? The reason for the question is that the...
  3. DRW75

    Trying to understand Von Mises a bit better

    A little while ago, we contracted a small local FEA company to give some assistance with a solid FEA analysis we were carrying out. The contractor had made the statement that the material will begin yielding upon reaching sqrt(3)*Fy or 1.73 * yield strength of the material under a generalized...
  4. DRW75

    Alternate welding method for stud welding

    Hey folks, Just looking for some input on using an alternate method of welding studs to plate other than 'conventional' stud welding. I am assuming that the stud can only be a mild steel which will limit its structural performance if it is welded to plate via a complete pen weld by pencil...
  5. DRW75

    Duplex 2205 Friction

    Hey folks, (not sure if this is the correct forum but...) Does anyone have friction coefficients for duplex 2205 on duplex 2205? I suspect that I am going to have to run a few tests to determine it, but some preliminary guidance would be nice. thanks DRW
  6. DRW75

    BS6349

    Hey folks Has anyone had any experience using this BS6349 standard for mooring design of vessels in the neighbourhood of 40,000 DWT? I am doing a jetty following this standard, and I am having difficulties with the water depth correction factors (figure 30). When I do my calculations as reqd...
  7. DRW75

    Crane rails on discontinuous supports

    Hey folks, does anyone know where I would find allowable stress criteria for crane rails on discrete supports (i.e. bending stresses introduced due to support conditions) Thanks DRW
  8. DRW75

    Structural Fabricators of north america

    Hey folks, does anyone have a good list of major structural fabricators in north america on the atlantic or gulf coasts? (ideally that service the oil & gas industry). Module fabrication sizes would be up to 2000 tonnes with dimensions of up to 40mx100mx20m - so they would need to be fairly...
  9. DRW75

    toe grinding

    hey folks, Couldn't find anything on the subject here, so here goes... I've always heard that when you are having difficulty getting a weldment to work due to fatigue (i.e. endurance limit is reached too early), toe grinding can be employed which improves the fatigue performance of the...
  10. DRW75

    Mechanical Fatigue of A321 SS

    Hey folks, Just a question regarding the properties of A321 stainless. I'm a structural engineer by trade, and am not too familiar with more exotic material properties and would appreciate a little direction. I've been doing some looking online for A321 properties, and have found some...
  11. DRW75

    Trying to simulate a clip critical connection with a bearing condition

    Hey folks, Is it legitimate to 'undersize' bolt holes (not actually undersize, but match drill the connections for a snug fit) so that a bolted connection resists forces like bearing, but since it is somewhat snug, it moves a relatively small amount - hence behaving more like a slip critical...
  12. DRW75

    Inconsistent boundary/shape factor

    Hey folks. Question: - can you (mathematically) have a second order shell element (say created by 8 node quadrilateral - serendipity element) which also has one edge also defined with two 1st order beam elements - one extending from a corner to the mid-node, and the other extending from the...
  13. DRW75

    the .FEM file extension

    Wassup folks, Anyone know if a good reference for deciphering an FEM file extension? I am trying to write to code to handle the information, but there are far too many bits of information in a typical file to properly capture all the details properly without potentially ignoring something...
  14. DRW75

    Time between concrete pours?

    Hey folks, what is a good period of time to wait between pouring the building footing and the building foundation/piers? Assuming no special admixtures for early high strength and we shall say normal (type 10) concrete. thanks DRW
  15. DRW75

    Infinitely strong cantilever

    Folks... Can anyone tell me what kind of material these guys are going to make this structure out of? It must have some really good physical properties... http://news.yahoo.com/s/ap/20050826/ap_on_re_us/brf_canyon_tourism;_ylt=AoP1yB6PdGpyy6904xeUCPes0NUE;_ylu=X3oDMTA3ODdxdHBhBHNlYwM5NjQ- If...
  16. DRW75

    Concrete encased column

    Hey folks, The architect wants to have some new steel columns partially encased in concrete for visual effect. I was thinking that the main thing I would need to do is put in some cracking reinforcement (mesh or the like), but as I'm thinking more and more about it, that might not be enough. I...
  17. DRW75

    Column Anchor Bolts

    Hey folks, I've got a project whereby I am relocating an existing building to a new location. It seemed to me the best way to do this is to pour the foundations(and piers) without anchor bolts, and then match-drill the concrete once the columns are in place via crane as required. I just...
  18. DRW75

    Structural Steel Painting

    Hey folks, what is a standard coating system for structural steel that is in a controlled environment - i.e. standard building ? I usually deal with corrosive (marine) environments, and have expensive coating systems which I usually spec out. For the case of a building, it seems that...
  19. DRW75

    Call out for Frames with tapered cross section

    Folks, Is it standard to call out on drawings the section dimensions for a tapered frame, or is it more appropriate to call out the wide flange section to be used to form the shape, and the taper angle? I'm not sure how much info the fabricator will require thanks for the input DRW
  20. DRW75

    Structural Specifications

    Hey folks, I have to create some structural construction specs - steel & concrete (unfortunately from scratch). Are there any good references out there to use as a decent basis? All my spec writing/modding was done under another company, of which i no longer have access to my old stuff. Thanks...

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