Hello, thanks for the great coal bins pics. I think I've read through every page in this section well over 100 times...
I'll try to keep it short and sweet. I've been getting bagged delivery the past few seasons, but the price difference between bulk and bagged is about $100 in these parts. I've been planning on building a bin for quite some time, it just never happened (like everything else on my to do list). I'm running a hand fed and plan on building an outdoor bin to hold 4+ tons of nut coal. I planned on building a beast of a bin but the price was just north of $1K. I planned on using all pressure treated lumber which included 4x4 posts for the floor structure and corner posts. I planned on using 3/4 plywood on the inside of the framework and T-111 to finish the outside. I know the plywood on the inside offers better structural support so I originally planned on building it this way. My only concern was flying insects making nests between the plywood and T-111. Overkill? The price of lumber forced me to scrap the bin!
I am revisiting the bin construction this summer. I simplified the structure a bit. I now plan on using 2x4 construction throughout. The base and walls will be 2x4 construction 12" on center. Instead of using 3/4 plywood and T-111 I plan on using 5/4 deck boards for the floor and walls. The wall boards will be fastened on the outside of the framework. I cut the price nearly in half constructing the bin this way.
I have a few questions. Is 2x4 construction sufficient for the weight? Will the boards on the outside of the framework hold the weight? I've seen many bins built this way so I don't think it's an issue. The bin dimensions would be 8x5x5. Thanks for any input.