Calculation for the location of support of vertical circular gate

Date of Exam

A vertical circular gate in a tunnel 8 m in diameter has oil (sp. gr. 0.80) on one side and air on the other side as shown in Figure HD-73. If oil is 12 m above the invert and the air pressure is 40 kPa, where will a single support be located to hold the gate in position (above the invert of the gate)?



A.   1.36 m C.   3.24 m
B.   1.84 m D.   2.62 m


Answer Key