How to model a Flat steel bar 150 wide x 10 Thk x 1000 Long and be able to design and get unity ratio for the member.
Thanks
To begin with, STAAD.Pro does not design flat bars. The only way to get a design out of STAAD for these type of sections is to define these as User table General Sections ( using menu option Tools > Create User table > New table and choosing section type as General ). You would need to enter the appropriate properties of the section like Cross Sectional Area, Moment of Inertia, Section Modulii and others. STAAD would then design the user table general section following rules applicable for wide flanges and generate unity ratios.
Thanks Sye, I used the User table General Sections and used the define polygon and computed section properties. But I am getting a warning saying that Design not performed for User General Sections.
Most likely TB and TD values are specified as zero. These has to be non zero for the section to be classified and designed. The terms are explained below
TD
Thickness associated with section element parallel to depth (usually web). Used to check depth/thickness ratio
TB
Thickness associated with section element parallel to flange. Used to check width/thickness ratio
Dear Sye,
My TB and TD values are not 0, but I still have the "Design not performed for User General Sections" warning. Can you advise?
Then most likely the design code you are using does not support design of user table general sections. For a flat bar I guess you are mostly trying to make sure that the axial forces are lesser than the axial capacities and so you may just compare the maximum axial force in these members to a pre calculated capacity value and check these manually. Other option would be to try to use a different design code.