Jacks can be specified for tendons on manual tendon layers.

RAM Concept calculates the force losses in a tendon if you draw jacks at live (stressing) ends. If you draw a jack at each end of a tendon then it is double end stressed. If only one jack is drawn then the other end of the tendon is a dead end. If you draw a single jack on a tendon layer then every tendon on that layer must have at least one jack attached.

RAM Concept uses the relevant value of f_se (specified in the Materials criteria page) as the effective stress for any tendon without a jack.