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  1. MacGruber22

    Tension Reinforcement for anchor bolt

    DoubleStud - Unless there is a seismic concern, I would have no issue reducing straight bar ld based on actual stress. -Mac
  2. MacGruber22

    BAR SIZE LIMITATION FOR WATER RETAINING STRUCTURE

    ACI 350-06 7.12.2.2 requires #4 minimum bar size for shrinkage and temp reinforcement. That is pretty much everything IMO - main bars may not be controlled by temp and shrinkage but they are acting to resist it. Chapter 19 on shells and plate members requires #4 for everything (19.2.7). ACI 350...
  3. MacGruber22

    Tension Reinforcement for anchor bolt

    https://drive.google.com/file/d/13TNfWE-CQx54UHx0LCKIGxs_yJKqSHWo/view?usp=drive_link I would not count on pedestal bars that are farther away from the anchor rods than 1/3 hef regardless of the theoretical ld from the intersection of the breakout cone. A lot of movement would need to occur to...
  4. MacGruber22

    "Automation" of Column Alignment Chart

    SF2607 - Yeah, a good guess keeps the algorithm in bounds. -Mac
  5. MacGruber22

    "Automation" of Column Alignment Chart

    I like the VBA option. Just need to be careful that adding commentary to the code will change the "Go To" line. -Mac
  6. MacGruber22

    "Automation" of Column Alignment Chart

    Thanks. I did find the chart equation. I had presumed it was more of a complicated step function. I was lazy and added a goal seek macro and button. Sometimes the solution is out of bounds, but resetting K to 1 gets it back to a reasonable re-solution. -Mac
  7. MacGruber22

    "Automation" of Column Alignment Chart

    Hey that is great! I will test it out. -Mac
  8. MacGruber22

    "Automation" of Column Alignment Chart

    Has anyone ever tried turning the alignment chart into an excel spreadsheet that allows direct calculation rather than graphically drawing a line between ΨA, ΨB, and K? RAM concrete does not automatically account for p-delta in concrete columns. This necessitates a hand calc check on whether...
  9. MacGruber22

    FALL ARREST LOAD (ASCE and OSHA)

    Bones - Yikes. I hate the stiffness of that "base plate". Not sure if it is helping to absorb energy or hurting by causing serious second order forces on the fasteners. -Mac
  10. MacGruber22

    FALL ARREST LOAD (ASCE and OSHA)

    We design these systems as part of major facade remediation and roofing replacement projects. The major hurdle is convincing owners to have a permanent system installed. You seem to have made it past that difficult part, though it is not clear to me what your role is - EOR, component designer...
  11. MacGruber22

    Geofoam backfill

    I have received unit pricing within the last month of $400 cu/yd for 250 cu.ft of EPS-12 (Baltimore). Also, the price is very volatile as I was told by the contractor. Good idea to present conceptual alternates for pricing before taking a design all the way with EPS. -Mac
  12. MacGruber22

    Finite element method book recommendations for concrete

    I have the G.A. Rombach book. It is decent. I also strongly agree with Bones. The user and theory manuals for various concrete-specific FEM software (SAFE, RAM Concept, etc) are a very good since they are focused on practical concrete design. Connecting the dots between the software tools...
  13. MacGruber22

    Revisiting Structural Engineering as a Profession vs Trade (Reboot from 2019)

    Welp, I *was* having a good day today. -Mac
  14. MacGruber22

    Optimizing workflow

    That is a step beyond us. I have beam families with reactions and other things for scheduling and general organizing, but not actual analysis syncing. The most I have done with Python is create a script to add "+/-" onto the suffix of existing dimension strings. Now, I noticed Revit 22 has...
  15. MacGruber22

    Optimizing workflow

    For similar firms as ours (~20 engineers), managing detail libraries/templates with Revit is far easier than in AutoCAD. Not only is it easier to manage and update, it encourages far more uniform drafting and design standards between various engineers, and it reduces errors. Drafting views have...
  16. MacGruber22

    Do You See Any Construction Problems With This Roof Framing?

    Jfklein, heed the warnings. You are being pushy. Further, if you are a registered engineer and take information from this site to make an opinion in the practice of structural engineering (that you are not competent in) related to this building, you are flirting with violating licensing ethics...
  17. MacGruber22

    Blodgett's vs. AISC Steel Manual

    As much as I want this site to be mostly about engineering, these claims need to be addressed and not permitted to stand on their own. "...a certain percentage which is 100% true". Boy howdy, that is some serious obfuscation/double speak. This is what happens when hasty generalizations are...
  18. MacGruber22

    Number of Geotechnical Boreholes for a Building

    There are many, many reasons, both logically and anecdotally to avoid this as SEOR. As an example, you wouldn't want to be caught in a lawsuit if, say, an underground stream is later discovered within the footprint of a building recently constructed, in an area where no borings were taken. Do...
  19. MacGruber22

    How did you compile your detail library and how do you learn detailing for other unfamiliar sectors?

    I will say that aside from amassing quality details, Revit has been our favorite way of organizing them. Our firm is much more efficient these days, as well as detailing/designing in a more similar manner between individuals. Our Revit details have "designer notes" and/or hyperlinks to our...
  20. MacGruber22

    Modelling Band Beams in Ram Concept

    I know this hasn't been mentioned but it is critical in Concept to make sure to consider next axial force when your slab has beams, steps, etc. The net axial force that developed from the change in geometry is large - this obviously affects your shear design, of which you do not want to mess up...

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