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  • Users: JoshPlumSE
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  1. JoshPlumSE

    Return to RISA?

    Sorry for the misleading title. I am NOT going to be returning to RISA. However, I have always kept an eye on the company, their social media posts. And, visited their booths when I was at a structural engineering conference. I noticed recently that one of their posts used a term like "It's...
  2. JoshPlumSE

    RISA pronounced like Liza or Visa

    Has anyone been seeing targeted ads for RISA recently? They seem to have a new marketing campaign... Which is fine, of course. But, what's weird to me is the company seems to have changed it's name, with the woman in the ad referring to a company with a totally different pronunciation. In the...
  3. JoshPlumSE

    ETABS & Walking Vibration

    Back in late 2021, we had this thread that discussed a feature in ETABS related to walking vibration. thread507-489466 This thread prompted me to start an internal discussion on the topic here at CSI. I found that we were working on a new feature that would perform an analysis very similar to...
  4. JoshPlumSE

    Various links related to CO2 Capture

    Icelandic Direct Air Capture: https://climeworks.com/plant-orca A Chilean paper discussing the chemical absorption (amine based) and alternative for CO2 capture: https://www.energypartnership.cl/fileadmin/user_upload/chile/media_elements/Studies/20210818_Carbon_Capture_ExecSummary.pdf One...
  5. JoshPlumSE

    Baldwin Hills Dam Disaster - 1963

    A recent death in the family (and cool post from JRB) have spurred me to begin digitizing boxes of slides from my parents and grandparents. My Granddad took a number of pictures of the aftermath of the 1963 Dam failure. It failed after only being in service for a little over 10 years. There...
  6. JoshPlumSE

    1st New Nuclear plant in 30 years

    Here is an AP article on the first new nuclear plant built from scratch in the US over the last 30 years. https://apnews.com/article/georgia-power-nuclear-reactor-vogtle-9555e3f9169f2d58161056feaa81a425 It cost roughly 35 Billion dollars to build. One unit is now in operation and produces...
  7. JoshPlumSE

    More media reports on Fusion advances

    https://www.cnn.com/2022/12/12/politics/nuclear-fusion-energy-us-scientists-climate/index.html On a related note, I just learned that my backyard neighbor is a physicist who's working on a nuclear fusion project. He loves his job, but he's a bit skeptical that we'll see true practical results...
  8. JoshPlumSE

    Interesting article from MSN / Fortune on climate change

    https://www.msn.com/en-us/weather/topstories/i-was-a-lead-author-on-the-climate-report-that-won-al-gore-the-nobel-prize-here-s-what-we-know-now-that-we-didn-t-know-then/ar-AA1484MQ?cvid=24cb73afffe242308df7ef3b67b1a779
  9. JoshPlumSE

    Bio-Fuels

    Someone asked a question about "synthetic fuels" on another forum where we were talking about gas prices and such. I don't know much about this subject, so I thought I would ask this forum about it and see if I can learn anything from you guys. I know that I've read about "bio-diesel" fuels...
  10. JoshPlumSE

    New Info on Solar

    So, I was recently informed by my homeowner's insurance that our insurance would not be renewed next year unless we replaced our existing roof. That put me down a fairly "deep dive" on energy efficiency related to roofs and also the idea of installing solar on our roof. Eventually deciding to...
  11. JoshPlumSE

    Gates has invested in Nuclear Power as well as solar

    Interesting article on CNN today. I know we've seen posts about some solar projects that Bill Gates was involved in. But, it seems like he's also trying to develop nuclear as well. My favorite part of this is that it's going to a town that used to have a coal plant.... i.e. replacing one of the...
  12. JoshPlumSE

    Carbon Capture News article

    This is a relatively short news article. But, I had not read much about Carbon Capture / DAC (Direct Air Capture) before. Therefore, I found it interesting and though you all might too. https://news.yahoo.com/is-carbon-removal-a-realistic-climate-solution-150118699.html
  13. JoshPlumSE

    RISA and Ukraine war

    Has RISA posted anything about how the war in the Ukraine is going to affect their customers or such? I'm just curious. FWIW, I used to work for RISA (until November 2017) and I know that a large amount of their programming was being done by the Ukrainian office. Especially for any program...
  14. JoshPlumSE

    Big step in nuclear fusion research

    I want to say that someone commented on this in another thread. But, I can't find it right now, so I thought I'd post it here in a new thread. Essentially, this latest experiment generated more power than the power that went into creating it. That's a pretty big step. And, correct me if I'm...
  15. JoshPlumSE

    Liquid Piston Engine promises vs reality.

    I've heard a lot about this new liquid piston engine and how it's so much more light weight than conventional engines and is 20 or 30% more efficient. DEFINITELY not my area of expertise. I read a little bit about it. It sounds very similar conceptually to an inverted Wankel. But, instead of...
  16. JoshPlumSE

    Drilling Degree of Freedom for Plate / Shell Elements

    I thought I learned (way back in my college days) that the "drilling degree of freedom" for plate elements was not included in a proper plate / shell element formulation. As a work around, I have always drawn in a series of frame elements at that location to convert the drilling moment into...
  17. JoshPlumSE

    What's the proper way to specify treated wood?

    I have been using the following in my structural notes for treated GluLam beams: GluLam beams exposed to weather shall be in accordance with AWPA standard U1 to the requirements of use category A (UC4A). However, I got an objection from a plan check engineer saying that I needed to add /...
  18. JoshPlumSE

    Pedestrian / Equestrian Foot Bridge

    I'm designing a small wooden bridge to span over a local storm control channel in a clients large property. The question I have is what loading to use? Right now, I'm using 100 psf because it's a pedestrian bridge. My feeling is that is adequate for equestrian traffic as well. It's only...
  19. JoshPlumSE

    John Stossel: Green New Deal - Fact or Fiction

    I watched this YouTube video the other day and found it very interesting. I was curious what other peoples thoughts on it would be: https://www.youtube.com/watch?v=RIOiGtO2UBA Concerns raised in this video regarding moving towards 100% renewable energy: 1) Transmission lines / infrastructure...
  20. JoshPlumSE

    What Do you Believe about Global Warming / Climate Change?

    Someone I know thought it would be interesting to conduct a simple survey about what Eng-Tips users who are interested in this topic actually believe. Tough to do in a forum like this. But, maybe we can do a simple survey. I'll post a few different replies. And you merely give a star to the...

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