Ewart A. Wetherill
Paoletti Assoc., Inc., 40 Gold St., San Francisco, CA 94133
A machine shop is housed in the same building as two large motor generators. Because of the need for overhead crane access to both facilities they are separated only by a partial-height wall. The resulting work environment is noisy and unpleasant although below the OSHA requirements for hearing protection. This paper describes two feasible methods of acoustical separation, one of which was aceptable to the owner but which has not yet been executed.