ChiEngr
Structural
- Oct 19, 2021
- 69
Hello,
I am wondering if anybody sees an issue with a detail I am working on currently. I have a condition where the client wants to raise, locally, the height of a parapet several feet to match the height of an adjacent parapet wall constructed out of 3-wythes of brick (The existing building is approximately 100 years old). I am designing the parapet extension, consisting of 4" face brick + 8" CMU backup, to span horizontally (approximately 6 foot span between adjacent wall piers). For reasons I won't get into in this post, I want there to be in-plane slip at the joint between the new parapet extension and the existing parapet. Thus, I am only trying to achieve out-of-plane shear transfer. My initial thought is to use a smooth dowel bar between the two materials, with one end greased as well. The shear required to be transferred per dowel is about 400 lbs.
Has anybody encountered something similar in the past? I am not sure what capacity checks I should even be considering outside of dowel strength and bearing against the existing brick masonry. Any help or suggestions would be greatly appreciated.
I am wondering if anybody sees an issue with a detail I am working on currently. I have a condition where the client wants to raise, locally, the height of a parapet several feet to match the height of an adjacent parapet wall constructed out of 3-wythes of brick (The existing building is approximately 100 years old). I am designing the parapet extension, consisting of 4" face brick + 8" CMU backup, to span horizontally (approximately 6 foot span between adjacent wall piers). For reasons I won't get into in this post, I want there to be in-plane slip at the joint between the new parapet extension and the existing parapet. Thus, I am only trying to achieve out-of-plane shear transfer. My initial thought is to use a smooth dowel bar between the two materials, with one end greased as well. The shear required to be transferred per dowel is about 400 lbs.
Has anybody encountered something similar in the past? I am not sure what capacity checks I should even be considering outside of dowel strength and bearing against the existing brick masonry. Any help or suggestions would be greatly appreciated.
