Figure 162 shows pressures along the center line of the transition-bucket floor. The envelope curve includes inclination angles from 15° 'to 35° and flows in the Froude number range of 6.8 to 10.3, the usual range of operating conditions. The maximum pressure was found to be slightly greater than given by D. B. Gumensky 2 from theoretical considerations. The theoretical pres sure P,, is expressed as P,=(l.94 W2 R+62.5) D1 in which wzrR This maximum pressure occurred approximately 0.6 of the bucket length from the upstream end. Pressures rapidly became less toward the down stream end of the bucket and reached atmospheric at the bucket lip.