A stationarily-mounted seating structure consists of a pair of spaced supports, a seat pivotably mounted between the spaced supports and a back fixed to the spaced supports. Each spaced support includes forward and rearward vertical support members and the seat is mounted to the forward vertical support member while the back is mounted to the rearward vertical support member. A pivot mechanism for pivotably mounting the seat between the supports includes a shaft extending between and connecting the forward vertical support members. A stop element is fixed on the shaft for limiting the range of pivotable movement of the seat. A bushing is secured to the seat and is formed with an inner bearing surface for rotatably supporting the shaft, and outer bearing surfaces for engaging the stop element as well as a shroud which conceals the stop element, the bushing and a portion of the shaft. A foot bracket is mounted to each end of the shaft, and a platform bracket is mounted to the forward vertical support member. A threaded fastener secures the foot bracket to the platform bracket, and a slot in the foot bracket enables adjacent foot brackets to be placed at an angle to each other for use in a radiused installation.