I have a client who would like a built in shelving unit installed into their library. I have expressed my concerns of deflection of the shelves after books are placed on them. The unit is going to be made of solid maple. The design obstacle however is creating shelves that are 1) strong enough to carry large weight capacities, and 2) the client would like to be able to adjust the shelves at variable heights.
Does ANYONE have any ideas on how to construct 54 inch shelves that could hold a lot of books without any deflection on the shelve and what would be the best hardware to utilize to make the shelving capable of being adjusted to various heights?