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  1. SteelTubes

    If HSS Column is welded to baseplate, then how does one knows is that a moment (fixed) connection or pinned connection?

    There are two articles on Steel Tube Institute's website that talk about HSS Column to baseplate connections, one with a design example. Though I don't think they directly address your specific question, you might find them helpful...
  2. SteelTubes

    What are some good references for connection design for a new EIT?

    Steel Tube Institute has a free tool to verify that your specified HSS wall thickness is adequate. It's called HSS Connex, link below. https://steeltubeinstitute.org/hollow-structural-sections/hss-connex-tool/ And yes, there is a free webinar on September 18th, comparing the use of HSS to...
  3. SteelTubes

    Welding of A53 Gr. B

    Per the below article from the Steel Tube Institute, "when you use an A53 pipe, you will pay in part for the sealant that producers use to coat the outside of the pipe. In order to weld to these pipes, a fabricator must remove the sealant you have paid for, an unnecessary cost and extra step in...
  4. SteelTubes

    What are some good references for connection design for a new EIT?

    Steel Tube Institute has loads of resources on HSS connection design, including articles with design examples, design manuals with more design examples, HSS Connex to determine minimum wall thickness at connections, spreadsheet design tools for professional members, etc. You can start with this...
  5. SteelTubes

    Risa 3D Steel - Concrete Column

    The Steel Tube Institute has a great new article, as well as a reference guide for concrete filled columns, which includes some software recommendations. They also have a spreadsheet design tool for filled and unfilled columns, available to professional members. Here are the links to each of...
  6. SteelTubes

    HSS column design with shear plate connection

    Here are a few resources for designing shear plate connections to HSS Columns. I don't think they address your question regarding global design of the column, but they may, and they certainly address how to handle the design of the connection...
  7. SteelTubes

    moment welds to HSS with multiple WF beam sizes

    This article offers some cost-effective alternates to through plate moment connections: https://steeltubeinstitute.org/resources/expert-tips-for-cost-effective-hss-specification-and-fabrication/
  8. SteelTubes

    AISC HSS Yieldline Global Force Strength Reduction Factor, Qf

    Upsizing the wall thickness is a good option. Steel Tube Institute has a tool called HSS Connex for determining minimum wall thickness required to meet connection requirements. https://steeltubeinstitute.org/hollow-structural-sections/hss-connex-tool/
  9. SteelTubes

    HSS column at base plate with no workable flat

    You might find the Steel Tube Institute's Effective Weld Length Calculator helpful. https://steeltubeinstitute.org/hss-effective-weld-calculator/
  10. SteelTubes

    Can LPile be used for HSS concrete filled, or composite column design above grade?

    Awesome, thank you very much, @Retrograde. I went to the link you sent, and they also had a video summarizing their composite column design capabilities, and it looks promising. I'll check out the free trial.
  11. SteelTubes

    Can LPile be used for HSS concrete filled, or composite column design above grade?

    If anyone has a helpful response, I welcome it and appreciate it!
  12. SteelTubes

    Can LPile be used for HSS concrete filled, or composite column design above grade?

    @lexeng18 I deleted the prior thread (once) because your response is odd and unnecessarily negative. The second paragraph, "not to be harsh" serves no purpose. However, because you insist on posting it again, I will leave it for now.
  13. SteelTubes

    Can LPile be used for HSS concrete filled, or composite column design above grade?

    I am putting together a reference guide for design of concrete filled HSS and have many articles and design manual references, however I would like to include software recommendations if software exists that is capable of concrete filled/composite HSS design. LPile was recommended for this...
  14. SteelTubes

    Software for design of concrete filled HSS columns

    Thank you Azcats. I'll check it out. I'm compiling software resources to provide to structural engineers, as part of a quick reference guide for concrete filled or composite HSS.
  15. SteelTubes

    Software for design of concrete filled HSS columns

    I'm specifically looking for software solutions. Yes, there are some tables in the AISC manual, and more extensive tables in the STI Design Manual, which we've already included in the reference guide.
  16. SteelTubes

    should column top plates be same size as beams they support?

    Check out these two articles for advice on sizing cap plates: https://steeltubeinstitute.org/resources/expert-tips-for-cost-effective-hss-specification-and-fabrication/ https://steeltubeinstitute.org/resources/hss-limit-states-cap-plate-connections/
  17. SteelTubes

    Rebar cages for concrete filled hollow section (CFHS) columns

    This article doesn't necessarily answer your question but it provides practical considerations for concrete filled HSS columns and may point you in the right direction. https://steeltubeinstitute.org/resources/practical-guidance-for-concrete-filled-hss-columns/
  18. SteelTubes

    Software for design of concrete filled HSS columns

    I am working on putting together a list of references on concrete filled, or composite HSS column design, including connections to composite HSS members. The list will include articles, design manuals, etc. I would like to include possible software solutions as well, if they exist. There is...
  19. SteelTubes

    TUBE MITER WELDS

    Here is an FAQ from the Steel Tube Institute on mitered connections that might help: https://steeltubeinstitute.org/faq/welding-of-mitered-l-or-knee-connections/
  20. SteelTubes

    Hiring a bridge engineer?

    @bridgedisciple My understanding is that a primary reason for hesitancy in using HSS in bridges is because AWSD1.5 (the welding spec for bridges) does not include HSS. However, for pedestrian bridges, you are not required to use AWSD1.5. You can use AWS D1.1, which does include HSS, and which...

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