4.1 Design and analysis Analysis Design Known Sectional dimensions Loads Reinforcement Properties of materials Strength of material Inner force Solve Load carrying capacity Structures which can satisfy Deformation predicted functions Crack width Characteristics Certainty problem Uncertainty Comprehensive4.1 Design and analysis Analysis Design Known Sectional dimensions Reinforcement Strength of material Inner force Loads Properties of materials Solve Load carrying capacity Deformation Crack width Structures which can satisfy predicted functions Characteristics Certainty problem Uncertainty Comprehensive