Wood Shearwalls in Canada

[gmf]

We are designing wood shear walls in British Columbia, Canada for a residential home. The building codes in B.C. require that lateral design be completed given the high seismic zone. My colleague has obtained his minimum lateral earthquake force, V using V = S(Ta)MvIeW/(RdRo) and has designed the diaphragm and shear walls using this load. We are now designing the holdowns for the shearwalls. Do we need to design the holdowns to resist V x RdRo, or just the same minimum lateral earthquake force used to do to the diaphragm and shearwalls?

Any help would be greatly appreciated.

gmf

 

[MiketheEngineer]

Here in the states you need to design the hold downs at each end to resist all overturning loads and then install bolts to carry shear load.

They must be independent - the holdowns can't carry shear.