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Leesburg, Ohio | I highly recommend "A", with one addition, and here is why:
We have experience with two different buildings over the last 30+ years that have something like your "D" diagram...a channel in the concrete for the bottom of the door to slide in. Ours are not channel iron, but just formed into the concrete itself. They are always filling up with leaves, grass, crop residue from machinery, dirt and gravel, making the doors drag. Cleaning them regularly helps, but it is a constant chore. That's in warm weather. In the winter, no matter if you clean them every day, the next morning they will be blown full of snow and ice, and the doors will not move. So you get out the spud bars and ice scrapers, beat, pry, tear up the door eventually, no matter how careful you are, to get them open.
Trust me, you DO NOT want a channel in the concrete, or a buried channel iron.
With option "A" the doors will still seal up nicely against the lip made by the angle iron, and guide in the center like what is now on your center post, will hold the doors from blowing out. Here is the addition I mentioned above: put two additional "center post" type guides at the middle of each side, for a total of three center guides, so when you open the doors in the wind, that middle guide will hold them from blowing while you slide them open. This arrangement will solve both problems of holding the doors while part way open, and will let all dirt and trash get away instead of being trapped in a channel. We have one older building with these additional guides, with just a lip like "A" above, and it works fine. | |
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Sliding Door Track Ideas
