• Design parameter Cb in ASD 9th edition

    Hello, I have a question regarding Cb factor. The question is that "If I design a structure by AISC ASD 9th edition and use defalut cb 1, is it overdesign?" In case of latest AISC latest code, Cb is calculated as following, Cb = 12.5 max …

  • Land Drilling Oil Rig

    Hello, Kindly clarify the following queries with regard to Wind load: 1. In the applying wind load tab, What does the "Open structure" tab mean? What If I check this box? 2. What does exposure to a certain wind load mean? If we select all nodes in…

  • Vertical and roof Truss design

    Hi, I really need help. I am trying to design an open warehouse made of steel truss roof and column. I keep on getting joint instability on one of my support. I don't know if what I did was right in my modelling process. Should I separate the design…

  • Question about allowable tension in STAAD, AISC 9th Edition

    Hi Everyone First time login, I just have a simple question, my yield stress is 690Mpa, how could FT be 244.08, and FT of the adjacent beams are 414, which is make sense (414=690*0.6).

  • composite action

    I'm trying to model the attached floor system, and I need to make sure following points: 0- Can I draw the composite deck to cover all the floor area or do I have to draw it for every panel in the floor. because when I'm trying to cover the whole…

  • Design of composite steel beams

    Good day, I have used Staad to model a composite slab and design the beams supporting this slab. However, upon completing the steel design in staad the design results presented are very strange. All the members passed, however the results only presented…

  • SELFWEIGHT warning issue in Series 5

    Hello, i used Staadpro SELECT Series 5, 20.07.10.65. before, i used Series 1, 20.07.06.35. when i ran the analysis in series 1, it contained only 1 warning. but in series 5, it contained 96 warnings in OUTPUT. *WARNING- APPLIED SELFWEIGHT IS MORE…

  • user provided property in UPtable

    Dear all, i have a situation, where i have to design a beam (Japanese section 400x200x8x13) with a temporary T section at the bottom flange. i calculated the properties manually and made the same property in section wizard and saved as general section…

  • How can i make the AISC ASD codes available for connection design in STAAD.Pro ?

    In the Steel Design Mode of STAAD.Pro, users can select a node on their structure and create a new moment or a shear connection. However in my version, only BS and ISO codes are available. How can i make AISC ASD codes available for a moment or a shear…
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