- Author
-
Issen, L. A.
- Title
- Analytic Model for Calculating the Fire Resistance of Simply Supported Prestressed and Reinforced Concrete Beams.
- Coporate
- National Bureau of Standards, Gaithersburg, MD
- Report
-
NBS SP 411,
- Distribution
- Available from Government Printing Office
- Book or Conf
- National Bureau of Standards. Fire Safety Research. Proceedings of a Symposium. August 22, 1973.,
Gaithersburg, MD,
154-164 p.,
1973
- Keywords
-
concretes
|
finite difference theory
|
fire endurance
|
fire tests
|
isotherms
|
prestressed concretes
|
reinforced concretes
|
steels
- Abstract
- At present the fire resistance of concrete beams in determined either by running a fire test or by interpolation from existing fire test data. The second method can only be used if the data are for beams that are closely similar to the object beam. Other ad hoc empirical methods are equally limited. To overcome these difficulties an analytic model was dveloped for the rational analysis of prestressed and reinforced concrete beams. This mode will be checked against available test data. A computer program based on the analytic model is being tests and will be used for developing graphical tools (graphs, nomograms, tables) for estimating the fire endurance of simply supported prestressed and reinforced concrete beams.