Wood wall sill plate attachment to existing brick parapet

[Ben29]

What would you use to attach a wood sill plate to the top of an existing brick parapet wall (3 brick wythes)? I don't think there is a product that will give me reliable values for tension and shear when attaching to top of brick wall. Tapcon? Hilti Kwik-Con II?

 

[phamENG]

Using those screw anchors will, at best, give you the bond strength of the mortar in the bed joint immediately below the top brick. If the cap and flashing on that parapet wasn't maintained in perfect shape for the life of the building, that's probably going to be somewhere between 0 and 5psi. I'm joking a little but I'm also not. I've seen plenty of brick parapets like that, and they look great and even feel okay until you start really messing with the bricks and the mortar starts to crumble.

What kind of loads are we talking about?

 

[Ben29]

Not much... maybe 70plf in shear (into the page, i.e. shearwall) and 70 plf shear out-of-plane due to C&C wind loads.