Pellets storage in a self-built pellet silo

Since yesterday we have a Rika Paro pellet combination stove. Now I am thinking about the storage of the pellets, for which I have the following plan. My idea is now to build a silo out of OSB boards under the carport, where pellets can then be blown in with a silo vehicle. I would then take the pellets out through a slider with a bucket. My question now is whether this could work, as the OSB boards under the carport should also protect the pellets from moisture. Is the idea as I have planned it feasible? Yes, I could also order pellets in bags, but I would have to carry them all in at once. However, I am planning for the future.

In the past, we carried 40 quintals of briquettes down to the basement. Then carried them up 4 floors.

Shouldn't there be a container with a screw conveyor next to the pellet stove in the basement?

Storing dry under the carport is not really possible.

That depends on your experience in timber construction. Just using OSB won't work at first. You need a proper stud framework that, first of all, can withstand the static load (the pellets also press outward), has a suitable sloped floor at the bottom, and your silo must also withstand the pressure changes during filling. The pellets don’t just roll in there; they are blown in quite tightly. For that, you also need a cushioning impact protection so that half of it doesn’t get damaged in the process. The whole thing must be dust-tight, meaning practically airtight, and still have appropriate cleaning access points. OSB as an interior surface is unsuitable. It creates too much friction and will deteriorate over time. Multiplex / plywood or screen printing (the smooth side) is better. It can be done, but it is relatively much effort. If a finished room already exists, you can install a sloped floor yourself, but building one open in the carport requires some knowledge about pellets and timber construction. There are also relatively inexpensive standing silos for 1-2 m² of pellets to assemble yourself. A relevant cost factor is parts you would need anyway, and the time required should not be underestimated. In general, the location is not optimal. To prevent clogging or moisture accumulation in winter, I would store the pellets frost-free.

a I could also order pellets in bags, but I would have to carry them all in at once.

I carried a whole pallet of pellet bags down to the basement alone in half a day. Afterwards, as needed, I carried one bag four floors (from the basement to the third floor). That is really no problem. I am a woman without much muscle or stamina and only 160 cm tall. Maybe bags are a good choice after all if storage is otherwise difficult (that is, more difficult than carrying 15 kg bags).

@ dertill Thanks for your answer.

Yes, I am aware that there will be a high load on the walls; as impact protection for the pellets, I wanted to hang a piece of rubber from the conveyor belt. I think I can build the silo relatively quickly on my own, but I take your concerns about the OSB panels seriously. Yes, I could actually sacrifice a room in the outbuilding for the pellets, but it would be difficult to reach it with the hose for filling. Another idea of mine would be to set up a prefabricated silo under the carport and cover it with wood from the outside. This way, it would also be protected from frost.

Another idea of mine would be to set up a finished silo under the carport and to clad it externally with wood. This way it would also be protected from frost.

There is nothing protected from frost, It freezes completely through at corresponding temperatures. For frost protection either heat the silo under the carport (but that is nonsense), or place it inside in a frost-free room.