The OP also needs to consider how to connect the feet to their footings to allow the load cells to function while still restraining the feet against lateral loads from wind (if outdoors) and earthquakes (if those are a factor where the OP lives).
In addition, depending on the proportions of the silo and silo contents, there may be uplift loads at the feet during severe wind or seismic events that need to be resisted (to prevent overturning).
The OP's image:
