Double Columns versus Single Columns with brackets
Double Columns versus Single Columns with brackets
(OP)
We are doing preliminary work on a large steel frame building that will be divided into 4 quadrants by expansion joints. We are weighing the pros and cons of using double columns versus single columns with brackets.
Obviously, double columns take up more floor space, but are more capable of accomodating movements in both directions.
Anyone have any guidance?
Obviously, double columns take up more floor space, but are more capable of accomodating movements in both directions.
Anyone have any guidance?






RE: Double Columns versus Single Columns with brackets
If you were to use single columns with brackets, wouldn't you need to use teflon coated bearing plates? And you are correct, the detailing for movement in two orthogonal directions would be messy.
DaveAtkins
RE: Double Columns versus Single Columns with brackets
If you are, then you will need to account for building separations as well. I have previously used teflon pads on brackets which allowed for movement in 2 directions. It was a seismic detail, allowing upto 6" movement in either direction.
RE: Double Columns versus Single Columns with brackets
RE: Double Columns versus Single Columns with brackets