Who doesn't need more storage space? The design was from a friends who did something similar.
I took two 4x8 sheets of MDF, built a frame around them. Also built smaller supports in the middle to keep the middle from sagging (picture 3). Support posts are designed to basically set the framed shelving on top of it. The load bearing portion of the shelving is bolted tight with the frames resting on the bolted supports. The posts are simply screwed into the frame to hold the whole thing together. I could put another bolt in but that would probably be overkill.
As you can see the design is very simple and very large. The 1st shelf is 2ft off the ground and the top shelf is 5ft. This two 3ft tall storage areas and the lower section will be for storage bins. If there is flooding, the bins on the floor stand a chance and everything above should be fine regardless. I'm not expecting to get flooded out, but who knows anymore.
Future plans are for smaller shelves in the other unfinished portion of the basement. We have a freezer there now and unorganized storage on the floors.