Hi: I think this is the classic work on building libraries: Planning academic and research library buildings Author: Leighton, Philip D. Format: Book Published: Chicago : American Library Association, 1999. Language: English They list 150 pounds per square foot as the standard for libraries, so that stacks can be located anywhere in the library space. They recommend 175 pounds per square foot for dense book storage or map cases. For compact shelving, they list 300 pounds per square foot. The book has a lot of other helpful information, so if you can get a copy of it, it might be very useful. Karen DeWitt, Director Harrye B. Lyons Design Library NCSU Libraries Campus Box 7701 Raleigh, NC 27695-7701 919-513-3860 >>> Michael Young <[log in to unmask]> 7/1/2009 11:15 AM >>> Good morning, Is anyone on this list aware of a standard calculation or expression of the load/weight of library stacks filled with books? I need this to plan the move of a collection, and to ascertain whether the new location is strong enough to withstand the weight of the books and stacks. Is there a minimum strength/capacity for a building level housing book-filled library stacks? (e.g. 300 lbs per square foot-not a serious estimate, just an example of the kind of figure I am looking for). Many thanks! Michael Young Art & Design Librarian Homer Babbidge Library University of Connecticut Storrs, Connecticut 06269 Tel. 860-486-4953 Fax 860-486-6100 __________________________________________________________________ Mail submissions to [log in to unmask] For information about joining ARLIS/NA see: http://www.arlisna.org/join.html Send administrative matters (file requests, subscription requests, etc) to [log in to unmask] ARLIS-L Archives and subscription maintenance: http://lsv.uky.edu/archives/arlis-l.html Questions may be addressed to list owner (Judy Dyki) at: [log in to unmask] __________________________________________________________________ Mail submissions to [log in to unmask] For information about joining ARLIS/NA see: http://www.arlisna.org/join.html Send administrative matters (file requests, subscription requests, etc) to [log in to unmask] ARLIS-L Archives and subscription maintenance: http://lsv.uky.edu/archives/arlis-l.html Questions may be addressed to list owner (Judy Dyki) at: [log in to unmask]