Omega exception for single family residences in CBC 2022?

[SE2607]

Is there an exception for hold down anchors in concrete using for wood-framed single family residences? If not, all my anchorage capacities have diminished greatly.

TIA

 

[phamENG]

Don't know about that, but I know all my anchorage capacities for wind here in the US got cut by about 12% because the sheathing and nailing combination I always use was found to have some strange prying effect that reduces the overall capacity of the system. yay....

 

[driftLimiter]

Im assuming your talking about Omega in the contexts of ACI Anchorage Calculations.

Theres no exception for hold downs, however there is one for wall sill plate anchorage.

But what I have seen does it to use the limiting load clause in ACI anchorage requirements for seismic rather than omega. Also some anchor manufactureres have proprietary anchors which have a tested allowable load, to me this is a justifiable means to not apply omega on your hold down anchors.

Ductilie crush of the sill plate at the hold down posts is one method I have heard tossed around to limit the anchorage load. This is also mentioned in the commentary of ACI Ch 17.2.3.4.3 (Option (c))