If the wall is a load-bearing wall, it can usually withstand a large weight; but if it is a lightweight partition wall, such as a gypsum board wall, additional reinforcement measures may be required, such as adding internal support or choosing a lighter bookcase.

Solid wood bookcases made of oak, cherry or walnut are particularly strong and durable, and can usually bear 50-100 pounds (about 22-45 kilograms) per partition, depending on the thickness and length of the partition.