I have a project to install a new column inside of an existing building to support inside loads. The new column is connected at the top to an existing wide flange. The loads on the new column are light, so the column is supported by the floor beam underneath.
In order to avoid transfer of deflection loads from the beam above, I was going to use a bolted slip joint at the top of the new column. I was going to specify that the bolts be finger tightened and then the nut tack welded to prevent loosening. However, I was wondering if a second nut would be better. Also, is finger tightening sufficient or should I let them snug tighten the bolts per AISC specs? I feel like snug tight won't allow the slippage that I want.
In order to avoid transfer of deflection loads from the beam above, I was going to use a bolted slip joint at the top of the new column. I was going to specify that the bolts be finger tightened and then the nut tack welded to prevent loosening. However, I was wondering if a second nut would be better. Also, is finger tightening sufficient or should I let them snug tighten the bolts per AISC specs? I feel like snug tight won't allow the slippage that I want.
