Psymiun
Structural
- Nov 18, 2020
- 3
Hello everyone,
I've got a situation where my column requires a 3/16" weld to its baseplate which is anchored into the foundation.
Beacuse a 3/16" weld is needed I have to use a column at least 1/4" thick per AISC (3/16"+ 1/16"= 1/4")
This leads to VERY low d/c ratios in the column (axial, bending, shear).
The problem is the column weight is killing the budget for this relatively small structure (cantelevered steel canopy). It seems silly to have the increased thickness over the entire length of the column, when its only needed at the base. Is it possible to have a column 1/4" just at the base to satisfy the minimum thickness of material for the weld, then have the remaining portion of the column smaller? What are my options here? I would imagine there is some sort of go to column splice or column type that varies thickness for this type of stuation.
Any information on this would be much appreciated. thanks!
I've got a situation where my column requires a 3/16" weld to its baseplate which is anchored into the foundation.
Beacuse a 3/16" weld is needed I have to use a column at least 1/4" thick per AISC (3/16"+ 1/16"= 1/4")
This leads to VERY low d/c ratios in the column (axial, bending, shear).
The problem is the column weight is killing the budget for this relatively small structure (cantelevered steel canopy). It seems silly to have the increased thickness over the entire length of the column, when its only needed at the base. Is it possible to have a column 1/4" just at the base to satisfy the minimum thickness of material for the weld, then have the remaining portion of the column smaller? What are my options here? I would imagine there is some sort of go to column splice or column type that varies thickness for this type of stuation.
Any information on this would be much appreciated. thanks!