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  • Users: Akeee
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  1. Akeee

    Detaching masonry from RC frame

    Hello my fellow engineers, I need some guidance in this matter: I am trying to find the best solution (safe and not too expensive ) to detach the masonry wall from RC beam and column elements. I have a structure with a high probability to develope soft story at the first or second level, thing...
  2. Akeee

    Flat slab in 0.3 PGA seismic zone

    Hello, There is a new trend in my country "everything with flat slab".. I want to ask you guys what's your opinion about making a flat slab 13th story height with shear walls (not columns) in a seismic area with 0.30 PGA acceleration. I will limit the compressive strut at 0.4 of capacity, limit...
  3. Akeee

    Etabs v9 section cut

    Hello guys, thank you for taking the time to read my post. I want to ask more about how to use section cut by group in ETABS v9. I only know to use it with manual drawing and with quadrant points (used in sap2000 and etabs v13,15). I have a flat slab that i have to split into column strips and...
  4. Akeee

    Mode shapes question

    Hi guys, I don't have a clear understanding of how each vibration motion can be decomposed into modal shapes, I mean how each shape form added together can output a single final vibration motion shape. For example lets say that i have a 2 MDOF system and i shake a little the base so that system...
  5. Akeee

    Flow of seismic lateral forces

    Hello guys, I have a question about how the seismic lateral load flows in the structural elements. Seismic force is a mass force and the most of the mass in concentrated in the slab plan. So first when earthqueake comes the inertial forces (seismic forces) will "drag" the slab opposite to ground...
  6. Akeee

    Punching shear check - question

    Hello everybody, I have a question regard to the punching shear check for slabs. In EC2 (and i assume in other codes too) they say that you have to check first on "u0" perimeter (perimeter at the face of the column edge) that the punching stress is lower then a compression-like concrete strength...
  7. Akeee

    What is the unbalanced moment

    Hi guys, I try to design a flat slab and at punching shear check i have to use the unbalanced moment. Please help me understand what is the unbalanced moment and how do i calculate it. Thank you
  8. Akeee

    ETABS story shear

    Hello guys, I have a question about the Tortional moment "T" from Etabs - Story shear. The problem is that i dunno how to manual calculate that, let me explain from the start: i calculate and verify in etabs story response the seismic force for every level ( i distributed the base shear on every...
  9. Akeee

    How to calculate bending capacity M for a reinforcement concrete wall?

    Hello guys and thank you for your time, Can you tell me a book or where to search how the bending moment of a RC wall is calculated ? I only got the capable moment from sotftware like Extract but i want to learn how the program does it ? I know how to calculate for a beam, but a wall..
  10. Akeee

    A frame cabin question

    Hello everyone and thank you for trying to help me! I have to design a simple a cabin frame like this one (the same model): http://i6.photobucket.com/albums/y223/EaglesSJ/P1040221.jpg So i begin with wind load evaluation, and i distributed the load for every rafted beam. Everything looks fine...

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