sentences:  The hydraulic load on this type of spillway gate (Tainter gate) is transmitted from the cylindrical skin plate, which is in contact with the reservoir, through a number of struts to a convergence at the trunnion hub.The hub collects the load from the struts and transfers it across an interface to the trunnion pin, which is stationary and is connected to the dam.When the gate is operated, the hub rotates around the pin.