138 



SMALL WATER SUPPLIES. 



almost any convenient size or shape from the same 

 size plates, but the square is always the most 

 economical in material for holding a given quan- 

 tity of water. It is not our intention to discuss 

 the design of such tanks, because this is left in 

 the hands of the makers, who usually have on 

 stock rectangular plates for the bottom and sides 

 and curbed 

 plates for the 

 h ori zon ta 1 

 and vertical 

 angles. 



The usual 

 design of 

 is shown in 



FIG. 

 99. 



plate 



-u- 



f (ILL) } ( LUU 



J I H-H 



fig. 



99, 



FIG. ioo. 



(t\ 



101. 



from which it will be seen how very 

 convenient they are for shipment 

 and transit. A detail of the joints 

 employed is shown in fig. ioo, 

 which are put together with red- 

 lead or thin strips of sheet-lead and 

 bolted, while the tank would better 

 be stayed by round bars laid from 

 side to side crossing each other, 

 flattened and drilled at the ends 

 and bolted to the plates or by 

 diagonal stays bolted to the flanges 

 of the plates on the sides and 

 bottom of the type shown in fig. 

 The tank would be supported in any usual 



FIG. 1 01 



