The College of Charleston will close the second and third floors of the Marlene and Nathan Addlestone Library on Saturday for a major improvement project.

They will remain closed through mid-August, while the school attempts to make the space more suitable to the needs of today's student library users.

The library, which opened in 2005, is one of the newer buildings on the downtown campus.

"This renovation lays the foundation for us to create a real 21st century library," said John White, dean of libraries. "Even though the building seems new, it was planned in the mid-to-late 1990s and access to information has changed dramatically since then.

"Now every student is at the library with at least two devices that may need to be plugged in."

White said changes will be made on every floor of the library, which means the entire print collection will be unavailable until Aug. 18. Students and faculty can borrow books from other S.C. libraries and almost all libraries across the country quickly and easily through interlibrary loan and PASCAL.

The renovation will bring students 200 additional seats, power outlets throughout the building, and three more group study spaces. The additional power outlets will enable them to plug in laptops, phones and tablets.

And Starbucks will replace Java City on the building's first floor. Plans are in the works to add more outdoor seating.

Other changes at the library include putting the entire book collection on the second floor, expanding the Special Collections Reading Room, and expanding capacity for the library's unique manuscript and rare book collections.

"We've put as much thought into our print collection as we have into access to digital resources," White said.

"We will still only be at 55 percent capacity, which will allow us to add at least 10,000 books to our collection each year.

"We're maintaining the serendipity of discovery - when someone goes into the stacks looking for a book and finds others to read."

Reach Diane Knich at 843-937-5491 or on Twitter at @dianeknich.