Ultimate Limit State : Natural Disaster. Function of design variables which defines the resistance of a member to failure (i.e., its maximum load carrying capacity at failure). (Bul 2V)
The Mudblogger (Oilfield, Energy and Related Photographs), Oil Field Glossary, TX, USA 2014. http://mudblogger.com/oilfield-glossary/, (Oil - Amer) {777}