I was hoping I would'nt have to find the rods, I neglected to mention the building was built in 62, and is of poured concrete construction. As of yet, we have been unable to find the orgianl grounds, we do have a copy of the original plans, and the best we can tell is they were put in the concrete columns. The building has been remodled so much since 62 the plans bare only a slight resemblance to what we can acutally see and get access too. May have no other choice but to tear up the roof. If we can't find the originals, after making a few holes, we'll suggest running new downleads down the sides of the building.