This paper describes three methods of curvatures calculating, which are used in STR, EC2 and EMM. Describes, what influence for the average curvature of cracked elements have cracked and uncracked sections in the different methodologies. There are given range of variation of empirical coefficients when long-term loads are acting. According to constructions design and test data the reinforcement, concrete class and pre-stressed force influence is determined.

Article in Lithuanian