Masonry parapet detail question
Masonry parapet detail question
(OP)
We have a parapet wall of 8" masonry. the top of the wall was a U-block bond beam. We have been asked if the vertical steel needs to be hooked into the bond beam. Our opinion is no, but we cant find any code reference one way or the other. We are using FBC2001 in a 130 mph hurricane zone.
Any thoughts on hooking the vertical bars into the bond beam?
Thanks.
Any thoughts on hooking the vertical bars into the bond beam?
Thanks.






RE: Masonry parapet detail question
DaveAtkins
RE: Masonry parapet detail question
I see no reason to hook the rebar. My only thought is, if I am understanding this correctly, the hook would only prevent the bond beam from lifting away from the rest of the wall. And with forces that great, I believe you are dealing with tornado-like conditions.
RE: Masonry parapet detail question
RE: Masonry parapet detail question
In this case, my uplift would be something like 85 psf worst case. So on an 8" wall, with say a total width of 12" (architectural capping etc) I would have maybe 85 plf of uplift. I have #6 bars @ 32" o.c. extending up into bond beam. If I have 4" embed depth into beam, I would have an allowable tension capacity of about 3600 lb per #6 bar (4" / Ld * 60 * 0.44). SO I guess I have LOTS of capacity to resist the bond beam from lifting off the wall.
Thanks again everyone.
RE: Masonry parapet detail question