Stiffness of Base Plate on Perimeter Wall
Stiffness of Base Plate on Perimeter Wall
(OP)
I am trying to figure out the stiffness of a base plate for a steel column resting on a perimeter foundations wall. I am running through the procedure in the PCI Design Hand Book (section 3.8.2). Using the PCI I can easily calculate the flexibility of the base plate and the anchor bolts but I’m not sure how to account for the flexibility of the foundation wall/footing.
The PCI does give an equation for the flexibility of the foundation but that is for an isolated footing only.
The PCI does give an equation for the flexibility of the foundation but that is for an isolated footing only.






RE: Stiffness of Base Plate on Perimeter Wall
RE: Stiffness of Base Plate on Perimeter Wall
RE: Stiffness of Base Plate on Perimeter Wall
However, if you are talking about a short 6" thick stemwall, one foot or less high, over a thin strip footing, I would look to the spread footing comparison.
Anything in between, assume something between a spread footing and infinity. That close enough for you?
Mike McCann
MMC Engineering