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  1. Brad805

    Tilt Up Panel Base Connection

    Meadow Burke and Dayton Superior make an anchor like JAE shows. These are tested for the minimum anchorage force. It is hard to find a cheaper option than the grout tube. It is common to see the panel sit directly on the footing and they form a blockout in the slab for the wall. If only...
  2. Brad805

    Drilled Pier Frost Heave

    The crushed stone idea is horrible unless your soils are free draining. I doubt they are since CIP piles are suggested. The voids in the rock will fill with water, and your pile will most certainely jack if it freezes. At one time our geotechs recommended extending the pile about 4 times the...
  3. Brad805

    Ethics Double Check

    Considering <$10k constrcution cost, I would write up your opinion and move on unless some aspect is related to work you did in the past. Here the argument seems to be you have a conflict becuase this is a notable client? A conflict would arise if you had something to do with whatever has...
  4. Brad805

    Next Level Parametric Programming with Grasshopper

    Over the past many months I have been learning how to use Grasshopper. If you are not familiar with this, it is a graphical programming tool. You can link this with Revit, Tekla and several other software packages. Most modeling software in the AEC world extrude defined shapes along lines...
  5. Brad805

    Give me your wisdom: how is plasterboard used in your practice?

    Displacement-Based Seismic Design of Structures - 2nd Edition by Dr. Priestley is a very good reference for the topic of ductility.
  6. Brad805

    Give me your wisdom: how is plasterboard used in your practice?

    I am in Canada. We are a metric country, but most residential trades still work in imperial. It is very weird, but it has been that way for a long time. Our rebar is all metric. Go figure. Nobody specs anything to do with the drywall here. The joints and layout is all up to the tradesman...
  7. Brad805

    Give me your wisdom: how is plasterboard used in your practice?

    Less astethic? You do mud your joints? The joints here are mudded in almost all homes except for modular homes. In modular homes they have plastic pieces that cover the joints. In schools they use vinyl covered drywall, but that is for durability and has nothing to do with shear loading...
  8. Brad805

    Give me your wisdom: how is plasterboard used in your practice?

    The normal drywall practice is to have joints at the centerline of a single stud. Our code at the time suggested a second stud in cases where the drywall was being used as as a shear element. Having hung drywall I know how easy it is to have your drywall only bearing on a stud 3/8" or so...
  9. Brad805

    Give me your wisdom: how is plasterboard used in your practice?

    We tried using drywall as part of our lateral system years ago. Nobody I know uses staples, but maybe the modular trailer companies do. The problem we had since this is not standard practice is nobody informed us of when the drywall work was being done. In our case we had shown extra studs at...
  10. Brad805

    Precast Parking Structure: Double Tee Production & Bearing Connection

    Ok, I see that in Chapter 13. I would be curious if that happens all the time in industry. 3/32" vs 1/8"?
  11. Brad805

    Precast Parking Structure: Double Tee Production & Bearing Connection

    I suspect most precast manufactuer's have endless bulkheads for this problem. Slopes are normal, and that is not a lot of work. Sloping the bearing is more work given the reality of what one must do with the rebar and forming the bearing. If the bearing is 3" or 75mm, the slope distance over...
  12. Brad805

    Connection Problem

    What are the anchors? Hilti, HCA, Simpson? Hilti limits the bolt size to 3/8" for a this type of embedment, so two bolts would be trickey. Hilti Profis works well for this.
  13. Brad805

    Foundation for modular field office

    This will depend on the rules in effect where the office is located. People still put trailers on blocks at grade if they can get away with it. We see these set on screw piles most of the time. Few want to pay the cost for a frost wall, so most end up skirted with wood framing or a plastic...
  14. Brad805

    frame release concept steel structure

    The column releases would be the primary problem. Otherwise it seems similar to a common old school pin truss model. In reality, your top chord rarely has this many pins. It is also common to have some small gaps at the web intesections to keep the fabrication simple.
  15. Brad805

    Bolts and T-Stubs and Prying, Oh My!

    The only reason to look at FEA would be to prove to those who will incorrectly suggest this is a fit up problem before they agree to fix the problem. It would also be interesting to see the effect on the webs if you have a lot of stretched connections along the length of the chords. Beyond...
  16. Brad805

    Bolts and T-Stubs and Prying, Oh My!

    True. None of this is complicated to model in Tekla, and from that you can direct link to IDEAStatic with the Checkbot easily. Modeling this in Tekla is easy. One creates a few custom components, and you are off to the races. Since it is not your problem to fix, it seems the problem stops...
  17. Brad805

    Bolts and T-Stubs and Prying, Oh My!

    This seems like a good application for Idea Statica to determine the stiffness of these joints. The plates seem thinner than even what I see in a PEB joint. I doubt anyone would have thought this was your design. You do not give the vibe you miss much.
  18. Brad805

    Very steep roof (24/12) - vaulted

    The moment frames seem reasonable. I would look at a 2x12 wall so I could use deeper sections and space out the frames. That will bring a WF12 into the realm of possibilities. If I were dropping this much $$, I would ask to delete the tie as well.
  19. Brad805

    SAP2000 Quick Plots

    Yes, I need to speed up my process to create the calc book in an electronic format. Our projects are all over the map, so templates have never worked well, but to be honest that might be a user issue more than a software problem. The idea of extracting the data and re-creating the plots has...
  20. Brad805

    SAP2000 Quick Plots

    Thanks guys. The model name is a start. The force diagrams must be stored somehow using the M33, V22, etc. names. If I could extract those along with the load combination I would be off to the races. I did ask tech support, but the person that responded seemed only marginally interested. It...

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