Industrial Engineering& Management Unit 1 A predetermined time standard is a work measurement technique whereby times established for basic human motions(classified according to the nature of the motion and the conditions under which it is made) are used to build up the time for a job at a defined level of performance. As the definition indicates, PTS systems are the techniques for synthesizing operation times from standard time data for basic motions. The nature of PTS systems can be easily illustrated by reference to a simple work cycle, such as pushing a washer on a bolt. The operator will reach to the washer, grasp the washer, move the washer to the bolt, position it on the bolt and release it. Many operations consist, broadly speaking of some or all of these five basic motions which are illustrated in the table. Table 1.4 Components of a basic PTS