Wood wall stud 1

[dgkhan]

Normally we have plywood sheeting on both sides of wall studs in a typical house. So for bending we can take beam stability factor CL =1

 

[NKT]

Yes... For typical wall studs I would use CL=1.0 because the sheathing restrains lateral buckling. Gypsum board works too.

 

[dgkhan]

What About CP(for axial capacity of stud). We cannot take it = 1 right?. We can only use minimum slenderness ratio and not the larger slender ness rayioon in our calcs for FCce or F'c.

 

[Lion06]

You can take Cp=1.0 for weak axis buckling (for a stud wall), but not for strong-axis buckling.

 

[NKT]

Cp is usually the controlling modification factor for wood stud walls; it will typically be significantly smaller than 1.0. If it's approaching 1.0, you may want to consider increasing the economy of your design by using a smaller column (stud) section.

Since you are looking at bending of a stud wall, make sure to check the "Bending and Axial Compression" interaction equation (1995 NDS Section 3.9.2).

 

[Lion06]

But, Cp=1.0 for weak-axis buckling. Don't use l/d for weak-axis in the column stability equation. Also, when doing the combined check, make sure to use the correct FcE (in the plane of buckling being considered - for your case it will be about the strong axis).