• What is the best way to model beam elements of different depths flush at the top, including plate elements?

    Hello. Please go through attached PowerPoint and then the below discussion will make more sense. I am using STAAD version 20.07.11.70. The main problem is: when modelling decks or bulkheads which include offset beam elements and plates attached to…

  • Composite Joists in RSS

    Is there any option for specifying composite joists in RSS? The FloorVibe module had the option to use the SJI Composite Joist designations (i.e. ddCJxxx/xxx where dd is depth and xxx are the applicable loads). But I don't see any implementation of that…

  • Entering Atypical composite decks

    Hello, I am in the process of modeling a new building and given the long spans required, we are using an atypical composite deck catalog, using 6.125" of Lightweight 6" flutes. However i am at loss as how to enter these deck properties, since all the…

  • Designing Studs for Specific Beam Size

    In RAM SS, I have a group of beams that I know the sizes I want, but need to come up with number of studs and camber. Is there a way I can do this? All steel beams are specified as composite in the modeler. I've gone to " process " and cleared both designs…

  • Vibration analysis in Ram Concept

    Hi all, I have two questions about vibration analysis using RAM Concept. How can I know whether the vibration analysis is performed on a "cracked" or "uncracked" models. And also, do I have control over that? I ask this question because I am doing…

  • RE: STAAD X - update on availability?

    We will continue to update and support those Ram Products for the time being. Ram Elements will be getting an update, but not composite design. Only RAM SS (or STAAD.pro) can perform composite beam design. STAAD(X) probably won't be released as a stand…

  • RE: Composite Beam/Deck

    Modeling the slab with a plate mesh and using rigid links to connect the centers of the plate/beams is an acceptable approach. Instead of actually going in and defining the master slaves at all of the corresponding slab/beam nodes, which could be time…

  • RE: Creating Composite Deck & its Properties

    You do NOT need to define composite decks one by one. If the deck properties and the direction are same, you can define a single deck covering all the members. Just identify the boundary of the deck by clicking the corner nodes and depending on the direction…

  • RE: Composite Deck

    You can always manipulate the composite deck data using the input command file. For example if you would like to declare the beam 503 as non-composite, you can just delete that member number from the member list accompanying the COMPOSITE parameter and…

  • RE: Design of composite steel beams

    Use the TRACK 1 parameter and you will have a much detailed output for all composite members with critical loads. A TRACK 2 will print an even more detailed output.

  • composite steel deck

    Hi Everyone, I am trying to design a steel composite deck using staad and I have a few queries: 1. How can I obtain the analysis results for this composite decking? 2. Can staad design the composite deck, and if so, how can this done? Thanks…

  • RE: Why DXF exported plans do not show studs on frame beams?

    Our philosophy is that the lateral, frame beams can only be properly designed in Ram Frame - Steel mode where all the load cases are combined and model indeterminacy is considered. We allow the user to view a gravity-only preliminary composite design…

  • RE: STAAD Pro. Composite Deck vs Diaphragm Action

    A composite deck is not equivalent to defining a rigid diaphragm. It assigns the composite properties to the beams based on the effective width of the slab. However it does not make the floor completely rigid. It also does not account for the torsion…

  • RE: composite steel deck

    In STAAD.Pro one can model composite beams in a couple of ways. You may refer to the section 1.7.7 of the Technical Reference Manual to find out more on both methods. Following either of these methods one can account for the stiffness due to the deck…

  • RE: RAM steel output information

    Here's a sample calculation for the US codes. The I-effective part is on page 5. A snapshot of that is at the bottom.

  • RE: RAM Steel Beam module not using studs

    I think you are encountering a new defect in RAM Steel 15.02.00.00 only. It affects girders when you use Design All, then View/Update and try to change the studs from the optimum. We are working on a solution, but if you have not done a lot of work since…

  • How to model Property for Structural Roof Deck Diaphragm

    I am trying to accurately model a gable roof with a structural metal roof deck that acts as a diaphragm. Ultimately, I'd like to take forces from my STAAD model to design the structural metal roof deck diaphragm. I only want to consider metal roof deck…

  • Studs keep disappearing from composite deck design

    I have been working on a composite deck design for several months. The building has passed permit and is about to be issued for construction. So far, I have had no problems with it. All beam designs were locked so any changes to the design due to architectural…

  • RE: Minimum Size Requirements for Composite action

    In Ram Structural System? If so you can assign various dimension controls in Ram Modeler - Layout - Beam - Size restrictions (like minimum flange width) if that's the key factor. Otherwise you can edit the steel beam design table to exclude the smaller…

  • RE: Optimize composite steel beams in STAAD.Pro

    STAAD.Pro will be able to optimize composite beams only for the AISC ASD 9th edition code ( command CODE AISC ). For LRFD 3rd edition code ( command CODE LRFD ), it would be able to check the composite section but not optimize it. Design of composite…

  • RE: RAM Steel Beam module not using studs

    If the beam is acutely skewed to the deck you can have that problem. You'll find details here: You can always use the Assign - Ignore Rib Spacing... command to circumvent that issue.

  • RE: How RAM SS designs composite beams with custom sections...

    I think your question is addressed here: communities.bentley.com/.../3113.ram-table-editing-faq

  • RE: Beam warning when designing all

    Please check our Ram Steel Beam FAQ for details. It may be best to make that beam non-composite, or it may require the use of a modified deck (Assign menu - Ignore rib spacing) so that the stud row spacing can be smaller.

  • RE: RAM steel output information

    The Steel beam design report is the most detailed output we have (there is a less detailed summary). Regarding the modular ratio, it looks like the user can only set the modular ratio when using the British code (Ram Manger - Criteria - BS5950 Parameters…

  • RE: Design shown after design errors

    Take a look at our Steel beam FAQ In it the first tip is to allow <25% composite action in the criteria so that you can evaluate beams as composite with fewer studs. Note, you have to assign the stud number and analyze as the program will never optimize…
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