Section 2(121)(ii) in Assam Notified Urban Areas (Other than Guwahati) Building Rules, 2014
(ii)Institutional Buildings: Institutional buildings ordinarily provide sleeping accommodation for the occupants and specialized non-commercial training centers. It includes hospital, sanatoria, custodial institutions and penal institutions like jails, prisons, mental hospitals and reformatories. These shall include any building used for school, college or day care purposes involving assembly for instruction, education or recreation where it is a part of education and other public and semi-public buildings.