Using Structural Columns for Roof Drains
Using Structural Columns for Roof Drains
(OP)
I couldn't find anything in the search here.
What has been the experience and viewpoint of allowing steel pipe roof drains to extend through the walls of structural columns (larger pipe columns - say 10 to 16 inch diameter) and extend down through the base plate and out the footing or pedestal?
Assuming you can manage the structural strength/buckling issues, has this been successfully done in the past?
We have a concern that if there ever was a leak in the internal pipe there would be no way to fix it short of shoring the roof and re-building the whole assembly.
Galvanizing? "leak-proof" pipes within the structural column?
??
What has been the experience and viewpoint of allowing steel pipe roof drains to extend through the walls of structural columns (larger pipe columns - say 10 to 16 inch diameter) and extend down through the base plate and out the footing or pedestal?
Assuming you can manage the structural strength/buckling issues, has this been successfully done in the past?
We have a concern that if there ever was a leak in the internal pipe there would be no way to fix it short of shoring the roof and re-building the whole assembly.
Galvanizing? "leak-proof" pipes within the structural column?
??






RE: Using Structural Columns for Roof Drains
RE: Using Structural Columns for Roof Drains
RE: Using Structural Columns for Roof Drains
Mike Halloran
Pembroke Pines, FL, USA
RE: Using Structural Columns for Roof Drains
RE: Using Structural Columns for Roof Drains
There must be similar concerns about water filled columns for fire protection which concept has been used successfully on a number of buildings.
http://www.cookeonfire.com/pdfs/17.pdf
BA
RE: Using Structural Columns for Roof Drains
I guess I've seen that done, Archs. like it because it's out of sight and out of harms-way. But, I've also seen roof drains leak, and appreciate your concern about what would you do then. I've also seen the drain pipes embedded in a conc. col. with varying, good, bad, freezing results. Maybe you explaining the two options to the Arch. or owner and have them send you a letter identifying the choice they want to live with. I don't quite understand Ron's rationale, that his would be o.k. in an alum. col., since the steel pipe might still leak, and you would have the same problem, except less internal col. corrosion. Unless he means that the alum. col. interior is the water carrier, with some sort of piping connections atop the cap pl. and below the base pl. And, I would provide the weep hole suggested to show any problem immediately.
Maybe this is a belt and suspenders approach, but is there any fairly flexible plastic pipe, PEX or otherwise, and large enough, and code compliant for a roof drain? Proved holes in the cap pl. and the base pl. and a light gage conduit to thread the plastic pipe through; that is down, through the cap and base pls. and a large sweeping conduit elbow, and out the side of the pier, to a connection make-up box or point below the slab.
RE: Using Structural Columns for Roof Drains
My problem, as the structural, is making the column work with a big hole in its side...sometimes a challenge!
RE: Using Structural Columns for Roof Drains
Dik
RE: Using Structural Columns for Roof Drains
RE: Using Structural Columns for Roof Drains