When were *light gauge* lally collumns introduced?
When were *light gauge* lally collumns introduced?
(OP)
Does anybody know when they stopped making "lally columns" from structural (standard) pipe, concrete filled, and switched to the current 16 GA shells? I am looking at 1987 plans for a building that calls for 3-1/2" lally columns. When I calculate the load, it is more than twice what I would put on a modern lally, but for the old-style lally, it would be no problem. I'm only increasing the load about 3%... but still! The cap plate and the footing called for would be good for the full load.






RE: When were *light gauge* lally collumns introduced?
RE: When were *light gauge* lally collumns introduced?
RE: When were *light gauge* lally collumns introduced?
To prevent the 16ga shell from buckling or is it for fire resistance?
I can't imagine it being as economical as simply going to a heavier gage.
The ones I bought recently at Lowes were about 12ga and hollow.