178 CEMENT AND CONCRETE 



155. A Rectangular Water Tank (Figs. 166, 167, 167-a) . 



Requirements: To construct form according to plan, prepare 



foundation and construct a rectangular water tank, 



to be provided with inlet pipe with float control 



and outlet pipe. 



FIG. 166. Outside form for rectangular water tank. 



FIG. 167. Inside form for rectangular water tank. 



Note: This project is quite similar to that described in 



Sec. 145, with exception of shape. 

 Instructions: 



1) Prepare foundation. Set inlet and outlet pipes in 

 place. 



2) Construct outside form in place 38" high (Fig. 166). 



3) Construct inner form ready for use so that tank will be 

 2-1/2' deep with 6" floor, and 5" wall at top and 10" 

 wall at the bottom. 



4) Construct form for float box. 



