Steel Section Design and Connections Tutorial - Kxcad.net

T2.2.10 Column Lateral Restraints
Ensure you are in Search for
Next Brief Mode
Click on the lower part of the
outer left hand column
The cyan background indicates
that the column requires lateral
restraints. Let us specify the side
rail positions (1.4 m centres) and
then check the various portions
for axial with moments.
Click on the Lateral Restraints
tab
Type 1.4 in the Portion 1 input
box
Click on the 3rd and 4th portions on the bending moment in the output area
Change to Copy Current Brief Mode
Select right hand outer column to copy the Axial with Moment brief including
the lateral restraints information to the other outer column
The side rail spacing is satisfactory. Let us now check the column stability and
determine the positions of the torsional restraints.
T2.2.11 Column Torsional Restraints
Select Appendix-G : Stability Checks from the Integrated Design menu
The cyan background indicates
that the column requires
additional torsional restraints.
Please note that the column
must be restrained at the plastic
hinge location in all cases.
We shall now increase and
decrease the length between the
points of torsional restraints
(Portion 1).
Click the Torsional Restraints
tab
Enter a value of 4.2 in Portion
1
Change to Copy Current Brief Mode
Select right hand outer column to copy the Appendix-G brief including the
torsional restraints information to the other outer column
T2 Multi-bay Portal Frame Design Tutorial
T2 - 12