234 



ENGINEERING ON THE FARM 



and use in preference to tamped posts. The best form of 

 post is one which is equally strong from all directions. 

 Square or round posts fulfill this requirement. The most 



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 C&OJ5 JECT/ON 



Fig. 197. Method of attaching line wire to concrete posts 



economical post is one in which the size from the lower end 

 to the surface of the ground is the same and the post tapers 

 from the ground line to the top. The reinforcement should 

 be strong, light, and of sufficient roughness to permit the 

 mixture to get a firm grip upon it. Two or more wires 

 twisted together make a satisfactory reinforcing material. 

 Concrete posts should be piled in the shade for at least sixty 

 days, and for the first, thirty should be sprinkled daily. 



