Member Releases

Hi everyone,

Im a new user of Staad (staad pro 2005). and im stocked with my work co'z im not yet familiar with the member releases.. my structure has 2 cantilevers

A (start) B (end) and C(start) D(end) that supports a beam B (start) D (end)

Should i release Mx My Mz at theEND of my cantilevers?

How about for my beam B D, what releases should i do with it also?

Thanks in advance.

  • I presume that you have a member between A and B, another member between C and D, and a 3rd member between B and D. By cantilevers, you are refering to the first and second members. Am I right?

    If the 3rd member is merely resting on the first and second, and not attached through a proper moment connection in the case of steel, or a monolithic construction in the case of concrete, then you need to release MY and MZ on the first and second members. But MX should be released in one of those two only. Releasing MX on both of them will make the 3rd member torsionally unstable.

    Alternatively, you can release MX, MY and MZ at node B of member 3, and MY and MZ at node D of member 3. In this case, you won't release anything in the first and third members.

  • Yes you got it right..

    BIG thanks  SKLose..