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Showing results for tags 'smrf'.
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please any one can guide me on this issue Qno1 : As in the multistory building the bottom story columns has high strength concrete(5ksi) while the top stories columns has low strength concrete ( 3Ksi) , Is there any conflict with code ,practice and does it effect the performance of building during earth quack load or gravity load ? QNO2 : if the column has high strength concrete than beam does it effect the performance of building during earth quack load or gravity load and transfer of loads between beam & column? Qno3: if the Concrete strength of foundation is less than Column concrete strength ? will it be ok according to load transfer or codes ?
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I need this information very much, whether ETABS can design RC columns and Beams for shears coming from Plastic hinge and Usual Vertical loads, that is Ve=Vg+V(sway) for beam..... if it can, then how can i be sure it did take this into consideration, or how can i make the program take this into consideration? Thanks. Assalamu Alaikum. -
Hello Question regarding choosing between shear walls and moment frame system. Both the systems are provided to resist the lateral forces. Shear wall acts as lateral force resisting system same as Moment frame like IMRF, or SMRF. The value for Response reduction factor is different for different systems according to UBC. If i have a choice to select shear wall or moment frame system which system is better to choose. I know SMRF or is used in areas of high seismic zone thereby less R value and a ductile system. But in case of moderate seismic zone like zone 2A or zone 2B if I have option of providing only moment frames or only shear walls then what is the criteria for selecting such system?
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Salam I am designing a 2 storey building columns are 12 " x 15", building is in seismic zone 3 so detailing require SMRF. for ties spacing according to ACI-308-08 section 21.5.3.2 the option a governs with d/4. my question is tie spacing becomes 2.625 inches as i consider d=12-1.5=10.5 for 12" side. Is this correct? is this practical spacing? should i increase the column dimension?it is not workable then column dimension of 12 inches cannot be used for SMRF. Regards
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how to differentiate between different types of frames ordinary, intermediate and special moment resisting frames and on which parameters they depnd and how to select one from them to be used?
- 5 replies
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- Moment resisting frames
- imrf
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