In an open access library which allows users to browse, choose and select books of their interest, shelf organisation and arrangement of books are of primary importance. Books on different subjects that are constantly on demand are to be easily accessible to readers. This means that the professional classification schedules are rarely in tune with the layman's expectations of sequence of books on shelves. In a public library books of fiction,, travelogues, biography may be more popular from the readers point of view than the more serious books on literature, sciences and social sciences. A classification scheme does not provide the sequence of subjects of books on their its popularity. Besides, reference books like encyclopaedias, dictionaries, year books, directories, etc. should be kept in a separate place for easy reach and uninterrupted use by readers. Recent arrivals and books on current interest must be displayed at a prominent place to attract the attention of readers. Other books must be stacked according to their popular use with reference to the subjects.