ABSTRACT
A b s t r a c t Progress i n b r i d g e e n g i n e e r i n g depends on the p r o v i s i o n o f a r a t i o n a l and i n t e g r a t e d procedure f o r d e a l i n g w i t h e m p i r i c a l r u l e s , w o r k i n g s t r e s s methods, p l a s t i c t h e o r y , and techniques o f p r o b a b i l i t y , s t a t i s t i c s and even human psychology .
