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JMS has it about right. For soybeans, you would not need heat or a drier at all. Many beans are stored here in the midwest in bins without any venting or air, as long as you put them in the bin at 13% noisture, it's pretty cold where you are, and keep an eye on them. It is good to have a screened floor, a couple vents in the roof, and a 1 hp or slightly bigger fan to move air through now & then if the need arises. Some just put a small square or a 'Y' pattern in the cement floor, or even just big plastic tubes on the floor, & hook a fan up to that. You want to keep an eye on soybeans, but if harvested dry enough, they usually keep just fine with little fuss. They even have those little tube ariators you screw in from the top to take care of hot-spots - but kind of a band-ade approach. But if building, moght as well go for a vent floor of some type, at least the 'Y' pattern, pretty easy to cast into the concrete & place a couple pieces of vent flooring over them. For corn, you would 9 out of 10 years need to add heat to dry the corn, and maybe even stir it. Gets more complicated for corn storage. When moving the bin (sounds like a govt bin??? I have 2 sitting here waiting for floors & to be bolted up - I moved them by taking 2 rings off & setting on a car trailer, driving the mile to my place) Be sure to seal them up again, you don't want any water leaking in, even just a little will start a moulding spot, and those spots create their own heat which draws moisture out of the air & you are off to the races, they feed & breed themselves into ever bigger mould spots. Well, just like silage.... The screen in the center sounds like a corn crib screen, not so very useful in a grain bin???? Like a corn crib, fines like to settle in the middle & restrict airflow & that is where moulding often starts, so maybe it helped with that if it is not some kind of deflector to spread the grain. --->Paul
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