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Overstrength Factor Dilemma
Ayesha reacted to Badar (BAZ) for a topic
Use over-strength factor to magnify axial forces only. Their primary objective, in relation to seismic resistance, is to transfer axial forces as collectors or distributors as a part of diaphragm. Formation of flexural hinge is not an issue with them.1 point -
Piles As Spring
Ayesha reacted to Badar (BAZ) for a topic
Please look at the section 4.4.2 of the book: Pile Foundations in Engineering Practice. Piles can drive their capacity from three sources: lateral support of soil; frictional support from soil; and end bearing. I think you are referring to end bearing only in your query. For most cases, it is the major source of strength for a pile.1 point -
LEARNING 100% OF ETABS FOR STRUCTURAL DESIGN
Ayesha reacted to Muhammad Ahsan Saddique for a topic
Thankyou zain, appreciated.1 point -
LEARNING 100% OF ETABS FOR STRUCTURAL DESIGN
G_Farooq reacted to Zain Saeed for a topic
Ahsan for learning basics of ETABS you can watch https://www.youtube.com/channel/UChjVkfl09By3LvpcIZwoAzA https://www.youtube.com/c/MunawarHussain9CivilMDC https://www.youtube.com/c/TheStructuralWorld/playlists1 point -
Vertical Mass in ETABS Mass Source
Waqar Saleem reacted to Badar (BAZ) for a topic
There could be number of scenarios. For code based design, that does not involve ground motions, I do not think it will matter. May be for horizontal cantilevers, you can use it; I am not sure. If you are running ground motions (NLTHA, or some other analysis), and site is close to fault, then it can be critical for some structures depending on time history records.1 point -
Negative Modal Time Period
Ayesha reacted to Badar (BAZ) for a topic
Thanks for sharing.1 point -
Negative Modal Time Period
Howard Roark reacted to Waqar Saleem for a topic
Salam, In reviewing one etabs model, I found that my retaining wall was assigned membrane, when removed and replaced with shell this negative time period problem resolved. Thank you1 point -
Shear Wall with boundary element
Ayesha reacted to Badar (BAZ) for a topic
I have nothing to add.1 point -
Depending on what you are trying to achieve with tie beams? Reducing bearing pressure? Or reducing forces in pile cap? Modelling it as line element or shell?1 point