converting flat roof to pitched roof
converting flat roof to pitched roof
(OP)
I am working on a project to convert a residential flat roof to a pitched roof. The home was built in the 1960's and some modifications were made in the 90's. There is no official building plan for this structure.
The existing flat roof is made up of 2x6 laid flat against each other (weak-axis bending). The contractor wants to leave the existing roof and add a new roof frame over it. I want to know what is the most effective way of tackling this project since we are going to be adding additional dead load and since there is no existing building plans to identify shearwall locations. What is the best way to anchor the frame? And, what is the most cost effective solution, while not compromising safety, to ensure proper seismic resisting system?
Any comments, suggestions, and recommendations are welcomed and much appreciate. Thank you.
The existing flat roof is made up of 2x6 laid flat against each other (weak-axis bending). The contractor wants to leave the existing roof and add a new roof frame over it. I want to know what is the most effective way of tackling this project since we are going to be adding additional dead load and since there is no existing building plans to identify shearwall locations. What is the best way to anchor the frame? And, what is the most cost effective solution, while not compromising safety, to ensure proper seismic resisting system?
Any comments, suggestions, and recommendations are welcomed and much appreciate. Thank you.






RE: converting flat roof to pitched roof
Can you put roof trusses in place @ 4' o/c and use 2x6 on flat purlins @6' or so and use prefinished metal rood deck?
Lots of ways to skin this cat...
Dik
RE: converting flat roof to pitched roof
Dik
RE: converting flat roof to pitched roof
What slope does the owner/architect want on the new roof?
RE: converting flat roof to pitched roof
RE: converting flat roof to pitched roof
Mike McCann
MMC Engineering