distant of 



EXAMPLES 43 



istant f of its width from the down-stream edge. Determine the 

 maximum and minimum pressures on the section. 



(Maximum = 8'75 tons per square inch. 

 ' (Minimum = 1/25 ,, 



11. It is proposed to subject the lower 9 feet of a wall 17 feet high and 

 5 feet thick, weighing 150 Ibs. per cubic foot, to water pressure. Deter- 

 mine the centre of pressure on the lowest horizontal section. 



Ans. : At a distance from the centre of the section = 7*14 inches. 



