You have been enlisted with the job of designing a new workstation for assembly of small machines. Your plant has a final inspection station for the electronic device produced by your company. After hooking up a USB drive to a test port at the shoulder height of the worker seated at the workstation, a technician uses a test module program on the screen to check the product functions. The light manufacturing environment has an ambient sound level measured at 63 dB. The top surface of the workstation desk is 76.2 cm (30 inches) high, and is pushed up against a wall so the operator faces the wall during assembly. An assembly test panel will be mounted into the wall, flush with the wall, and the quality control engineer wants the top of this panel to be at eye height for the operators while they are seated. She also wants it mounted such that the USB port is within a distance that supports a functional reach for all current operators. Assume: None of the technicians are smaller in the relevant dimension than 5th % nor larger than . 95th 90 of their sex. 100% of technicians are male. The operator's chest can be just touching the edge of the table, and that they sit with an erect posture and reach parallel to the surface of the table. . . Ear plugs are provided freely to workers (not ear muffs). Hint: For each question, consider whether you should be designing for the mean, designing for the largest users, or designing for the smallest users. Using Appendix B of 1472G for general forces, recommend the following: (a) Height of the top of the monitor from the floor (not from workstation)
(b) Horizontal distance from the edge of the table to the vertical surface of the test monitor