Interesting Problem: Changing Boundary condition

[subrata]

Hi,
I am doing a gravity analysis of a sigle bay single story frame where the support two nodes (1 and 4) are fixed in all directions.

fix 1 1 1 1 1 1 0
fix 2 0 0 1 1 1 0
fix 3 0 0 1 1 1 0
fix 4 1 1 1 1 1 0

After the gravity analysis I want to remove the vertical boundary condition at node 4 by remove command

remove sp 4 2

Now for static equilibrium I have to replace the vertical restrain by reaction force (20 kN) I have got from previous gravity analysis.

pattern Plain 2 Linear {
load 4 0 20 0.0 0.0 0.0 0.0
}

Do I have to again do the gravity analysis for the application of the reaction?

Please help

thanks in advance,
Subrata

[silvia]

yes, defining the load pattern does not apply the load.