JedClampett
Structural
- Aug 13, 2002
- 4,031
I'm looking at the Ponding design requirements in AISC (9th Edition, Section K2). I don't understand where this would be a problem. It states that ponding must be checked "... unless the roof surface is provided with sufficient slope ... to prevent the accummulation of rainwater." Who wouldn't do this? All architects I know of are aware that it rains and slope roofs, using tapered insulation or just sloping the roof members. I would dare say they would be negligent if they didn't. I know there have been roof failures during heavy rainfalls, but I don't think that not providing a roof slope is the reason.
So when would this be an issue? Is there some slope that isn't sufficient?
The reason I'm asking is that I'm doing a review and formula K2-1 is about .4, but the roof has a 3/8 inch per foot slope.
So when would this be an issue? Is there some slope that isn't sufficient?
The reason I'm asking is that I'm doing a review and formula K2-1 is about .4, but the roof has a 3/8 inch per foot slope.