Indoor actual use area = book collection/number of books per unit area.
The saturated storage capacity of Chinese books per unit area: in dense stacks, it can be about 600-700 volumes /m2, in ordinary closed stacks, it can be about 300-350 volumes /m2, and in open stacks, it can be about 250-300 volumes /m2. This is just a rough figure. The specific figure depends on the size of the book shelf, the size of the column net and the height of the bookshelf.
From this, it can be calculated that if there are 300,000 books to be opened for storage, the usable area of the stacks to be opened is about 1 0,000-10,200 square meters.
It should also be noted that the stacks should leave room for book growth every year. Generally speaking, about 50% of the new arrangement will do. In other words, if there are actually 300,000 books, then the demand needs to be calculated according to 600,000 books.
(The above calculation is based on a six-story bookshelf. If you use a three-tier bookshelf, the capacity per unit area will be halved and the usable area will be doubled. ).