Covered Porch Snow Load
Covered Porch Snow Load
(OP)
Hello again
I am working on a covered porch and am wondering about the actual live load on the deck. How much snow load should be applied? The roof will take the majority of the snow load but some snow will blow onto the deck. Could I be safe and ignore the snow load or should I add a portion of the load and how do I determine that portion?
Any help would be appreciated
I am working on a covered porch and am wondering about the actual live load on the deck. How much snow load should be applied? The roof will take the majority of the snow load but some snow will blow onto the deck. Could I be safe and ignore the snow load or should I add a portion of the load and how do I determine that portion?
Any help would be appreciated





RE: Covered Porch Snow Load
http://www.eng-tips.com/viewthread.cfm?qid=185985
RE: Covered Porch Snow Load
RE: Covered Porch Snow Load
RE: Covered Porch Snow Load
Mike McCann
McCann Engineering
RE: Covered Porch Snow Load
There are two other things I would like to ask about...wind. I was wondering about uplift in this case, would I treat the porch roof as an overhang?
Also, something I see alot is the deck supported by a continous beam set back up to 12" from the edge of the deck. The support posts for the porch roof are located at the edge of the cantilevered portion of the deck floor. I can't this to work as the joists fail in shear. I would like to see the beam set back maybe 6" and the posts of the porch roof bearing on this beam, and preferably the footing.
RE: Covered Porch Snow Load
You can double the floor joists where the posts bear to help with your shear problem.
RE: Covered Porch Snow Load
I believe the IBC requires load combos in chapter 16. Those combos include Dead + Live + (Snow) for allowable stress design. A reduction is permitted for multiple transient loads.
Though I agree, the likelyhood of such a combo in most snow areas is unlikely; to ignore snow load where one exists appears to be a code violation.
For wind, I would go with partially enclosed.