Bracing Columns using Joists
Bracing Columns using Joists
(OP)
When framing a big box building with joist girders and joists, I have been told to place a joist at the column in order to brace the column. However, with the joist girder framing into the column it seems that the joist girder would brace the column and I would not need to place the joist exactly at the column.
The reason that I am interested in other professional's opinions is that if my maximum spacing is 6'-0" oc, I could eliminate joist if I don't need to place one at every column, instead just space at 6'-0" oc across the building to maximize spacing.
Let us assume our shears are taken out using concrete shear walls.
The reason that I am interested in other professional's opinions is that if my maximum spacing is 6'-0" oc, I could eliminate joist if I don't need to place one at every column, instead just space at 6'-0" oc across the building to maximize spacing.
Let us assume our shears are taken out using concrete shear walls.






RE: Bracing Columns using Joists
Joist spacing should align with panel points of the girder joist.
BA
RE: Bracing Columns using Joists
Mike McCann
MMC Engineering
RE: Bracing Columns using Joists
In the end, it probably doesn't matter which way you do it as the costs increases in erection and detailing will be offset the material savings.
RE: Bracing Columns using Joists
RE: Bracing Columns using Joists
The appendix in AISC 360-05 has the nodal brace loads.