My next scratch-built structure will be an HO scale, interlocking tower (brick) with a flat roof. (This is not the same PRR tower that Walthers is coming out with soon.) My tower is only about 16 x 22 ft. in outside dimensions.
Anyway, though I have drawings, they don't include any details for the top of the flat roof. There is a downspout that exits the wall on one side, near the top of the building, from some kind of housing, and runs down the side of the building. I spoke with an architect friend at church, and he says likely whatever the surface, for drainage, there would be a slight grade to one side (about 2% and probably not noticeable in HO) and a scupper.
I have looked on the Internet, but photos and details are for much larger buidlings. I note that there are HO scuppers available on Shapeways. I woulld like to detail the top of the roof and the housing for the downspout on the side of the building. Is the scupper a square or round box on top of the roof where the rainwater or melted snow drains into to get to the downspount? Or is this all one assembly that runs from the top of the roof to the downspout? Any photos would be appreciated.
