PROJECTS IN CONCRETE CONSTRUCTION 165 



Set the outer form in place and put in floor first. 

 Spread about 3" of concrete on floor; then put two or 

 three strips of the hog wire fence across the floor and 

 extend it up the sides. Place balance of concrete for 

 floor and tamp in place. Put a strip of hog wire in 

 place for wall reinforcing, lap the ends, and wire to it 

 the strips that were placed across the floor. Then 

 place inner form in position, carefully center it, and 

 fasten in place with boards nailed across the top. Pour 

 the rest of concrete, keeping the reinforcing near the 

 center of wall. It is desirable to provide a concrete 

 box in the center of the tank to provide protection for 

 the inlet pipe and automatic float. A form for this 

 box should be constructed, set in place and the concrete 

 poured as the tank is being completed. For the outlet 

 pipe, a drain with a 1-1/2 " coupling should be set in a 

 low place in the floor. A short piece of pipe screwed 

 into the coupling and extending to a height that it is de- 

 sired the water should stand, will act as an overflow. 

 5) Remove the forms from the tank in about forty-eight 

 hours, and, after wetting it thoroly, apply a cement 

 paint to the entire surface. Allow this coating to set, 

 then wet down again, after which the tank may be 

 filled with water. It should not be put into use for 

 a week or ten days, as the green concrete can easily be 

 broken by stock. 



