PSL Columns
PSL Columns
(OP)
PSL Columns (like Parallam):
Does anyone know why there is such a big difference between calculated axial capacity loads (calculated with a software like WoodWorks or similar) and the axial capacity loads supplied by the supplier ? Sometimes, the value calculated with the software is more than double the value given by the supplier.
Does anyone has the formulas to calculate the values by hands?
When the supplier only got 1.8E species and the software only allow for 2.0E species, how do we make the transformation? A direct ratio?
There is also three different values for each column size : 100%, 115% and 125%, it is not so very clear when to use one or the other.
Thanks
Does anyone know why there is such a big difference between calculated axial capacity loads (calculated with a software like WoodWorks or similar) and the axial capacity loads supplied by the supplier ? Sometimes, the value calculated with the software is more than double the value given by the supplier.
Does anyone has the formulas to calculate the values by hands?
When the supplier only got 1.8E species and the software only allow for 2.0E species, how do we make the transformation? A direct ratio?
There is also three different values for each column size : 100%, 115% and 125%, it is not so very clear when to use one or the other.
Thanks






RE: PSL Columns
RE: PSL Columns
RE: PSL Columns
RE: PSL Columns
The percentages, 100, 115,125,160% are the Duration Factors for floor, snow,roof live load, wind/earthquake (in that order).
But, if you don't know about duration factors and how to calculate, by hand, the column stability factor, Cp, then you probably shouldn't be using software like WoodWorks to calculate the capacity of a column.
RE: PSL Columns
RE: PSL Columns
Mike McCann
MMC Engineering
Motto: KISS
Motivation: Don't ask
RE: PSL Columns
RE: PSL Columns
The NDS has all the design formulas and factors.
I agree with slomobile....if you cannot do it by hand....