134 



SMALL WATER SUPPLIES. 



clearly shown by the drawings. In the walls there 

 are vertical bars J in. square (or f in. round) which 

 are spaced at 4 in. centre to centre. It is not neces- 

 sary, however, to carry all the bars up to the top of the 

 walls where the stresses set up by the water are less, 



FIG. 97. 



but every alternate bar is so carried up, while the 

 others terminate about half-way up or a little over. 



These bars are turned into the bottom of the tank 

 and carried 4 ft. horizontally, while at the corners are 

 fixed two bars placed at an angle of 45 to the hori- 

 zontal, and of the same section as the others. 



In the walls are also horizontal bars of the same 





FIG. 98. 



section but spaced 12 in. apart, while at the angles 

 extra horizontal bars are introduced between the 

 main ones. They would be 4 ft. long, and bent at 

 the centre, extending 2 ft. each side of the angle. 

 For the bottom of the tank, which would be 6 in. 



