repairing masonry parapets on 80 yr old building
repairing masonry parapets on 80 yr old building
(OP)
I am working on a renovation/restoration project. the building is 80 years old with clay brick/clay tile parapets that are damaged and need to be repaired/replaced. Most of the damage is on the back side of the parapets at the roof flashing level. The parapets are approximately 6 ft tall above the roof deck and lean outward. a masonry specialist recommends removing and replacing the masonry with CMU and brick veneer, with most of the veneer consisting of repaired existing brick. not sure about using the CMU but will explore shrinkage/expansion differences between the CMU and clay masonry. that aside, I need to reinforce the parapets. the reinforcing needs to extend far enough below the roof deck for adequate rebar embedment. wondering if there is a good source (historic renovation website, etc.) regarding how to handle the interface between base of CMU (if used) and the top of the remaining structural clay tile.
RE: repairing masonry parapets on 80 yr old building
RE: repairing masonry parapets on 80 yr old building
I would see if some type of diagonal strut system could be installed behind the parapets.
Alternatively, you could see what your roof structural system is comprised of and transfer the lateral moment from the parapet into the roof, bypassing the wall below.
If you are putting back the old brick, be sure to have the existing mortar analyzed to allow the new mortar to be of similar properties...specifically the amount of lime content should be higher with older buildings. A mortar with too high of a stiffness will fail the brick.
RE: repairing masonry parapets on 80 yr old building
RE: repairing masonry parapets on 80 yr old building
RE: repairing masonry parapets on 80 yr old building
RE: repairing masonry parapets on 80 yr old building
RE: repairing masonry parapets on 80 yr old building
RE: repairing masonry parapets on 80 yr old building