Table 3: Statistics of random design variables (II).

Mean/NominalCOVAverage strengthNumber of dataStandard deviationProbability distribution

SD 30a1.200.064360.082223.04Normal
SD 35a1.130.038395.58015.03Normal
SD 40a1.090.048436.077320.93Normal
Grade 40b1.130.116317.036.72Normal
Grade 60b1.120.098472.546.31Normal

KS D 3504.
ASTM A 615: Standard Specification for Deformed and Plain Carbon Steel Bars for Concrete Reinforcement-AASHTO No.: M 31 [14].