RE: Accidental torsión, respond spectrum
Please refer to the following link:communities.bentley.com/.../270493.aspx
View ArticleRE: Lift Analysis
As I defined in my original email.." 2. I have defined the load and displacement under same loadcase (LOAD 1). I would expect Staad to combine the effects (Pre-solve commnad in some programs) of force...
View ArticleRE: Curved bridge analysis using STAAD pro
There are three members intersecting at the edge nodes. I presume that the moment difference you noted above is accounted for in the moment (torsion) of the perpendicular member so the equilibrium is...
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Curved bridge analysis using STAAD pro
I am trying to analize a horizontally curved girder bridge using STAAD. I built up the model using beam elemnt and seperate the curved girder into straight segments. After ran the model, the bending...
View ArticleRE: Analysis of Dual System with Intermediate Moment Frame
No, the distribution of forces to the frames is based on the finite element stiffness analysis only. What most users probably do is run the analysis once and determine if the shear in the moment frames...
View ArticleDesign of double back to back channel in staad
Hi, I'm modeling aluminum truss member-diagonal in STAAD. I'm using double back to back channel with bolt in the middle of the length. First, i'm not sure whether k is 0.5 and in which direction(strong...
View ArticleRE: Curved bridge analysis using STAAD pro
Right! I forgot about the perpendicular memebers. Thank you!
View ArticleRE: Design of double back to back channel in staad
I don't think a bolt by itself is sufficient to reduce the unbraced length by 0.5. Is it a X brace and the bolt location is a crossing brace? In that case I see the point of assigning K=0.5, but in...
View ArticleRE: Design of double back to back channel in staad
Seth,Thank you for your respond. It's not a X brace but regular diagonal. I just read an article saying that K in this case can be taken as 0.8. The member is in compresion.I tried to play even with...
View ArticleRE: STAADPRO CONSULTING
follow the examples in the help menu .. and be familiar with your local code . . .
View ArticleRE: STAADPRO CONSULTING
There is no particular example meant for the NorthEast region of US. However, you could refer to the Application examples on US code. You could find those examples in the folder...
View ArticleSTAADPRO CONSULTING
Provide engineering and analysis of space frame modeled in STAADPRO in Northeast Region of US.
View ArticleRE: Design of double back to back channel in staad
Kukutanov,There are 2 possible reasons for this.1) The allowable compressive stress is governed by local buckling of the components of the cross section, rather than buckling or yielding of the gross...
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How to model bridge piers using STAAD
I'm trying to model the bridge piers as shown in attachment( sorry I couldn't reverse it)but not sure which element, beam or solid, shoul I use. If using beam element, how can I define a trapezoid...
View ArticleRE: Design of double back to back channel in staad
Kris,Thanks for your advice.I checked the local buckling and it is not the reason.Also where i can see "AXIAL COMPRESSION - GROSS SECTION", I'm designing aluminum structure based on the american codes...
View ArticleRE: Design of double back to back channel in staad
Even though the design is based on allowable stresses, those stresses are computed by checking the capacity of the member as a whole entity (Euler buckling, torsional buckling, yielding), as well as by...
View ArticleRE: Design of double back to back channel in staad
The STAAD input files (or any file for that matter) can also be uploaded using the Secure File Upload method.communities.bentley.com/.../7079.be-communities-secure-file-upload.aspx
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RE: Design of double back to back channel in staad
Kris,Thanks a lot, this solves everything. I had run hand calculations and all the factors i got are same as the listed above but i was not sure that my numbers are ok because my staad output gives me...
View ArticleRE: STAAD(X) Tower - Too many primary load cases
This does not answer my question because I did not do anything wrong. After I finished with the primary load case generator about 140 primary load cases just came up instanteneouly, I think the...
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