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  1. PlasmaStruc

    Steel auditorium building with out of plane masonry wall

    I am facing a problem in placing a concrete block wall (6" thick) on to a steel auditorium building. The building has two floors and an Auditorium. The entire frame is in steel. The bracings are provided in plane to the column beam frame, so no way to place the block wall in-plane. The initial...
  2. PlasmaStruc

    Reinforcement for Channel Lining

    To my knowledge I think it is essential to use reinforcement when lining a trapezoidal channel. Every guideline , code of practice I have referred, confirms it. But I have seen many channel lining machines carrying out lining without reinforcement net. So is mass concrete OK for lining? Can...
  3. PlasmaStruc

    soil interaction model in sap2000

    Moment is a concept based on the stress and lever arm. Moment is defined only for Beams and Planes where its thickness (or cross section ) is based on the section property. If you want to get the moments for a solid, you have to calculate it manually by taking the stresses on either side of the...
  4. PlasmaStruc

    structural modelling on sap 2000

    If the nodes do not coincide, I think you should you the Edit Points > connect method.
  5. PlasmaStruc

    It is not possible to make groups

    Did you select the group uses in the dialog box?
  6. PlasmaStruc

    How to model frictional resistance using FEM Software

    I see that almost all of you all are in the view that FEM modelling is not a preferred approach for a retaining wall. However since I am seeking for a friction modelling method using a FEM software approach, I found out this YouTube video (...
  7. PlasmaStruc

    How to model frictional resistance using FEM Software

    Yes I agree with you for a simple retaining wall. But say, how about a retaining wall with shear key. If I need to calculate the stress on shear key, excluding the friction. Of course, I could manually calculate the soil load retained by the wall and subtract the friction force based on the...
  8. PlasmaStruc

    How to model frictional resistance using FEM Software

    Can anyone please advice me on how to model sliding friction of a retaining wall. Currency I presume that It can be done by applying lateral springs. But is it correct? Any standard FEA approach on how I can check the sliding resistance of a retaining wall? Thank you.
  9. PlasmaStruc

    How to overcome sliding due to limited heel width

    @avscorreia, Yes it is a sort of a basement wall. Its is above the water table. I was in the view that the use of grade beams will be effective only of the next column foundation ( to which the grade beam is linked to) should be able to take the sliding force.
  10. PlasmaStruc

    How to overcome sliding due to limited heel width

    Thank you all for your concern to my problem. My intention was to post the problem in a simple manner. But I see that I need to tell you more details for you to help me. this is the case: This is actually a retaining wall and a foundation to a super structure. The superstructure is 3 storied...
  11. PlasmaStruc

    How to overcome sliding due to limited heel width

    The section of the wall is as given below: http://files.engineering.com/getfile.aspx?folder=e08447a0-11cd-4d06-aca2-a03a5171ee8f&file=wall.jpg
  12. PlasmaStruc

    How to overcome sliding due to limited heel width

    I am facing a problem with a limited heel width (about 0.5m) of a 4.6m tall retaining wall. I've got plenty of space on the toe side. Sliding is the critical condition. I have considered a shear key, but the effectiveness of the shear key seems to be not impressive. Appreciate your advice. Thanks.

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