Concrete structural members tensile stresses

In concrete structural members tensile stresses act in a longitudinal direction. This is why, stretched tendons (hereafter, called tendons) are placed in a longitudinal direction so that compressive stresses induced due to prestressing force may either reduce or eliminate these tensile stresses. In some other types of structural elements, such as water tanks and pipes, tensile stresses are produced due to hoop tension. As these tensile stresses operate along the circumference, tendons in such a situation are provided along the circumferential direction.