DRAINAGE 



than at the bottom, which is undesirable. Tile should be 



fitted together so that 



there are no cracks over 



J^inch wide. Small holes 



at the joints may be cov- 



ered by broken pieces of 



tile. 



In digging the ditch 

 and laying the tile, the 

 work should always begin 

 at the outlet. The tile 

 should be laid as fast as 

 the ditch is dug, to pre- 

 vent the destruction of 

 the ditch by rain. This 

 would happen if the water 

 should be allowed to flow 

 down the unprotected 

 ditch. In most soils, the 

 open ditches are quite 



likely tO Cave in if left Fig . 59. Laying tile with the tile hook. 



open during rain storms. 



Laterals should be joined to a main by " Y" connections 



furnished by the tile manufacturers. The cheapness of these 



connections does not justify 

 the work of cutting tile to 

 form a connection. Laterals 

 should enter the main at as 

 sharp an angle as convenient. 

 When the connection is made 

 at right angles, the flow of 



frQm ^ lateralg 



J?&dof 



om Ohio Exten. Bui. 47. 



has a tendency to check the flow of the water in the mains. 



