Aluminum Design Results

How do I view the Aluminum design results. I don't see a detailed report. However, I do see a utilization ratio. Which appears to be wrong. 

Thanks again!

  • Hi,

    The most expanded Output is printed with parameter TRACK 4 specified.
    Which version of STAAD you are using? Please send over your model and show where results go wrong.



  • Vertical Rail - Multipile Beam Model.STD

    Not sure if I uploaded that correctly.

    I have custom shape Tubes which I would upload but my folder doesn't appear to be located here:

    C:\Program Files\Bentley\Engineering\STAAD.Pro CONNECT Edition\STAAD\Sections 

    https://communities.bentley.com/products/ram-staad/f/ram-staad-forum/192538/aluminum-design-results/569240

    Any other suggestions?

  • What is ALClad? I can't seem to find a definition in the help file. 

  • AlClad is aluminum alloy type. This term is used in table 3.3-1 and 3.3-2 in the Aluminum design code.



  • Attaching a similar discussion on this topic for your reference.

    Question:
    
    For some members, the design output contains statements like this:
    
        **IN TABLES 3.3-1 and 3.3-2, NO DATA IS AVAILABLE FOR THE FOLLOWING COMBINATION FOR
          MEMBER #      2 **
        ALLOY   : 6061-T6    Product : All    Alclad : No     Welded : No
    
    What does it signify? I couldn't figure out why it worked on some but not others.
    
    Answer:
    
    The allowable stresses for Aluminum sections are fetched by STAAD from two look-up tables - Tables 3.3-1 and 3.3-2 of the Aluminum specifications.
    
    In these tables, the allowable stresses are published for a list of the permissible combinations of Alloy, Product, Alclad and weld type.
    
    Only a specific set of combinations of these 4 attributes is feasible in practice. An arbitrary combination of Alloy, Product, Alclad and weld type may not contain an entry in those tables.
    
    So, STAAD has to first verify whether the values specified by the user for these 4 parameters together make up one of the acceptable combinations. Only then will it be able to find the allowable stresses for that combination. If the combination is found to be impractical, the message we saw above will result.
    
    Take the case of the following set of parameters.
    
    CODE ALUMINUM
    ALLOY 34 MEMB 1 TO 36 45 TO 62 64 TO 155 234 TO 237 240
    BEAM 1 ALL
    RATIO 0.95 ALL
    LZ 220.55 MEMB 13 TO 18
    LY 96 MEMB 81 TO 115
    CHECK CODE MEMB 1 TO 36 45 TO 62 64 TO 155 234 TO 237 240
     
    Alloy 34 is 6061-T6. In Table 3.3.1 of the Aluminum code, this alloy is associated with only 2 types of products - Extrusions and Pipes.
     
    Since the parameter PRODUCT has not been specified as an input item, STAAD assumes the default value for it, which stands for ALL.
    
    The Weld parameter is not specified, which means its default value is used, namely, 0. This indicates a region that is farther than 1.0 inches from a weld.
    
    The Alclad parameter is not specified, which means its default value is used, namely, 0. This indicates that the material used in the section is not an Alclad.
    
    So, we are looking for the following combination:
    
    Alloy - 6061-T6
    Product - ALL
    Weld - No
    Alclad - No
    
    For the Product type, ALL signifies any of the following : Drawn Tube, Extrusions, Pipe and everything else
    
    If you look at tables 3.3-1 and 3.3-2 of the Aluminum specifications, you will find that the product type All is available for only certain alloys. In STAAD also, the product ALL is acceptable in only those cases.
    
    The 6061-T6 alloy is associated with only 2 types of products - Extrusions and Pipes - when Weld=No and Alclad=No. So, we need to change the Product type from All to either extrusions or Pipes.
     
    Let us set the Product parameter to 2, which stands for Extrusions. To do this by, go into the editor, and add the following line
    
    PRODUCT 2 MEMBER 1 TO 36 45 TO 62 64 TO 155 234 TO 237 240
    
    So, your Aluminum design data will look like the following
    
    PARAMETER
    CODE ALUMINUM
    ALLOY 34 MEMB 1 TO 36 45 TO 62 64 TO 155 234 TO 237 240
    PRODUCT 2 MEMBER 1 TO 36 45 TO 62 64 TO 155 234 TO 237 240  <===========  Add this line
    BEAM 1 ALL
    RATIO 0.95 ALL
    LZ 220.55 MEMB 13 TO 18
    LY 96 MEMB 81 TO 115
    CHECK CODE MEMB 1 TO 36 45 TO 62 64 TO 155 234 TO 237 240
    
    Save the file and run it again. You will get a successful design for all the members.
     
    

    Answer Verified By: RFreund