I am designing a pile foundation in staad using the plate modeling and defining the pile supports as springs. How should i calculate the spring constant.
My vertical pile capacity is 150MT and allowable deflection of pile head is 12mm. Is it 150/0.012=12500. Or should i multiply my capacity with factor of safety and calculate as (3*150)/0.012=37500??
Hi K RAMESH,
If you will multiply the spring stiffness by a factor, you will receive stiffer support spring than expected.
Yes. But should we consider the FOS in evaluating the stiffness or Not?
Yes, you should consider the code required factor(s) of safety for soil when assigning spring supports.