Right half of the building, make sure to connect the two internal belts with the other half and change the mixed item belt Smart Splitters to the item you choose for the corresponding storage. Credit to TotalXclipse for the initial design in a video.

To make the full building, two rights and two lefts will have to be properly placed for a combined whole. A single floor will have to be placed down the middle between the two main sides, can be made into two floors wide but you will have to change the roof to match. The main floor is purposely placed 6 meters up from the blueprint bottom in order to leave room for hidden underfloor belts. There are two input options for storage. First there is direct connection located on the bottom as elevator intakes, only the individual resources should go into these for proper storage. Second is mixed item sorting, such as inventory dump or truck/train station output, which is one belt that goes between the left and right sides with smart splitters taking the corresponding items to storage. These splitters do not have item outputs set yet, you must change those to your preferred items. The start and end of these belts is located at the end of the individual intakes on the bottom, all are labeled with signs to avoid confusion. All overflow is sent to the roof for sink disposal. Final building size is 9x12, and supports 32 seperate item storages.