Hello,
In my stad file, i used joint weight for sesmci using 1.0 DL + 0.25 LL. but when i analyzed some of members are failed where in wouldn't be in real world. can anyone explain is there any wrong in my model or the weight shown is real.
Also in my model there are some pklate connection. when i checked the "overlaping", many plates are showing as overlapped but i didnt make any overlapped plate. Is that plate design are okay
Appreciate your valuable responsesRack model.std
I see only members 75 and 204 are failing the deflection check for LC 208 as the DFF value set to these members is quite small (100). Are you seeing some other members failing? If yes, which STAAD.Pro version are you using?
There are many plates which are not connected correctly between each other as they do not share a common nodes. More details on this topic can be found here: https://communities.bentley.com/products/ram-staad/w/structural_analysis_and_design__wiki/20702/connectivity-issues
Hi Modestas,1122.Rack model.std
There are some other members also failing in load case 200. I have updated all plate connections properly. I excepted some of the plates may fail. but it is not happened. can you check whether my modelling is correct or not. am using STAAD.Pro V8i SS6.
I thought less DFF value will allow more deflection. isn't that?
Yes, lower DFF will allow more deflection, sorry for the confusion. The members are failing due to the deflection check. These members are checked as cantilever members (you should use CAN 1 design parameter instead of CAN 2 to do that) and for some load cases a higher nodal displacements are leading to this. Which member exactly you expect to pass the code check while it is failing in STAAD?Steel plates are not designed in STAAD.Pro.
Please note that STAAD.Pro V8i SS6 is not supported anymore, so I would recommend you to upgrade to STAAD.Pro CE as soon as you can.
I have created plates without any errors. How i can add these plates into analysis (strength and deflection check). should i add DJ1 Dj2 for all plates?
Steel plates cannot be designed in STAAD.Pro. You will need to compare the stresses of it with allowable stresses manually.