I would like to get a temporary bookcase from Ikea. This is only $20 but says the shelf load is only 44lbs. I have lots of books I want to store there for a while. I'm wondering, if I prop a book tightly under the middle of each shelf, is that enough to support and increase the load tolerance. Weighing some books, it would seem they would weigh more like 80 lbs on each shelf. Is it just the thickness of the shelves or would the unit itself have to be sturdier to hold heavy loads on the shelf. I have some better units already, which are holding only books. The shelves are about 1/2", 30" wide, and only have the holes and plastic tabs holding them.
Their bookcases also say to secure them to the wall (anything over 30"). I've never come across this before for bookcases and the ones I have are just freestanding. I just want something temporary and don't like the idea of attaching them to the wall. I may also be moving the bookcase around a bit while work is being done.