Recent content by donnabean

I am working on project which needs to change the live load form 4.8kpa t0 9.6kpa, How can I input the existing reber into SAFE and input 9.6kpa to chec? In my case, shall i only need to run Analysis instead of Analysis and Design? thanks

I am using SPslab to design a flat slab and use SAFE to redesign. In Spslab. i can change column stiffeness percentage and moment factor such as 0.65,0.35 to manipulate the moment distribution, but in SAFE, can i achive pin connection between slab and column strip, and how to change the moment...

SAFE 2014 has equivalent frame method, i am wondering what other method SAFE used to design two way slab.I always thought SAFE use quivalent frame method not the direct method to design flat slab. Correct me if i am wrong.

Hi there, I am working on a beam with handrail on top of it, I think I may need to consider torsion, but how much I shall consider? Any other issue I should pay attention to? Thanks.

Hi all, I built one story steel structure model, which can be analyzed, but ETABS kept showing "analysis and design section differs for 16 steel" and needed to reiterate the analysis and design. But after reanalysis and redesign, the same message showed up again. Please see attached $et file...

Thx, slickdeals. I did notice if I run a 2d x brace frame, there is axial force in the beam. I did assign a rigid diaphragm in this project.But how can I remove those nodes from rigid diaphragm constraint? thx.

Hi all, i am working on one story steel structure with steel deck as roof. I noticed all x brace bay beams don't have axial force at all, the reaction force shows that columns take horizontal force, some of the columns don't belong to lateral resisting system. How to solve this problem? Thx in...

Hi all, I used 30 default load combinations of CSA S16-09 and converted all combinations which contain lateral loads into nonlinear loads and ran nonlinear analysis, since all my lateral braces were tension only members. ETABS kept telling me than analysis and design sections differ for 5...

Thanks. it works.

Thanks for those replies. I created auto select lists for my beams and columns. I think I may figure out the reason why it looked like no internal force on members after I ran nonlinear analysis. I chosen step 0 when I tried to see member force diagram for those nonlinear analysis load...

Hi all, I treat my mezz. floor level as reference plan and assigned a rigid diaphragm, then I want to apply my seismic load of mezz floor at its center of mass, but ETABS would not allow me to do it since ETABS assumed mezz is a reference floor, I guess. Any solution for this issue? Thanks in...

Thanks. let me try it.

Thanks.

Hi all, How can I import my own load combinations and import into etabs, since it is time-consuming to create the load combinations for every new model from scratch. Another concern is in etabs member design csa s16 default load combinations, there is no snow combination. it looks like I need...

Hi all, I am learning ETABS now. I am running a etabs model and etabs kept giving the message "Analysis and design sections differ for 4 steel sections. Do you want to reiterate and design?".I kept press yes for more then 6 times, etabs still shown the same message. Does anyone know why i kept...