This is the section where all the borrowable books have been kept. This collection section is situated on the ground floor at the far left side of the entrance hall of the library. All the books have been arranged subject-wise ranging from 000 to 999 code number bearing stickers affixed to the spine of each and every book. In this section, users are given free access to approach the book-stacks to browse through the shelves and choose the book/s of their interest. This collection comprises the curriculum based textbooks and other literature books that can be checked-out for home reading. This section’s extends upto the stacks kept at the both sides of the main staircase. 

As the name implies, this collection comprises books published in Nepal, written on Nepal, or in the Nepali language. It also includes theses and dissertations submitted by Ph.D. scholars and Master’s degree students. This is a special collection; hence, no books and theses are allowed to be borrowed for home use, and readers have no direct access to the book stacks either. This is one of the most consulted collections in the library.

This section contains additional copies of curriculum-based books. This is a special section and the books cannot be checked out for home use hence can be consulted inside the library only. Users don’t have direct access to the book stacks of this library but have to seek help from the library assistant.

This section has a very rich collection of more than 30,200 Reference books. These books are mainly multi-volumed, big sized, costly and valuable books on different subjects. These books include – Encyclopaedias, Dictionaries, Directories, Gazetteers, Yearbooks, Almanacs, Handbooks/Manuals, Quotation books, Bibliographies, World record books etc. Users can have direct access to the shelves but no books are meant to be borrowed for home use. This reference section is located on the farwestern side on the ground floor.

T.U.Central Library has a collection of old manuscripts that have been kept preserved for over decades. At present there are 734 manuscripts in the library. In order to better preserve the manuscripts, an MoU (Memorandum of Understandings) has already been signed in February 2020 between TUCL and Centre for the Study of Manuscript Cultures (CSMC), University of Hamburg, Germany to work together for making acid-free preservation boxes to keep the manuscripts in so that the the manuscripts would be preserved safely in better way.  
Similiarly, T.U.Central library has maintained an archive of Tribhuvan University’s publications published so far since the inception of the University. The library is planning to digitize all the archived documents.
Likewise, TUCL has a collection of Rarebooks, the limited edition books that bear historical importance and cannot be found elsewhere in the market. All these three important collections have been kept in the same section with extreme care.

In order to facilitate the Visually Impaired Persons (VIPs) in getting easy access to learning materials TUCL has created a collection of a few hundred Audio-books. These audiobooks are mostly in Nepali language ranging from curriculum based materials to contemporary literature. Users can get copies of the audiobooks of their choice onto their saving device and can take home for listening.

This collection is entirely the books donated in 1977 July by Singh Shumsher, the son of late Prime minister of Nepal Mr. Chandra Shumsher JBR. He donated altogether 5000 books along with artistic wooden racks to keep the books in. Beautifully hardbound and artistically decorated to look at these books are in History, Philosophy, Psychology, Travel, Hunting, Culture, Politics, Art/Architecture etc. subject.

This collection section is relatively a new one. This section was established in 2018 with a collection of some 750 books donated by Tibet International Cultural Exchange Association (TICEA) and Tianli bookstore. Ever since then, every year new Chinese books are being added. Most of the books are in English language published in China. Other books are bilingual but are of Chinese origin viz. Chinese+Nepali, Chinese+English, Tibetan+Nepali and Tibetan+English. This section is also on the first floor.