3 6 4 



ENGINEERING ON THE FARM 



used to make these openings water-tight. This is much 

 more easily accomplished if a raised projection is made 

 around the openings. If a wooden top is used, it should 



y ^ 



1 



1 

 I 



$ 



1 



1 



C~/e?y /ftoroc/oh/y fampec/ 

 I onaer crencrefe r/nq 



*Or/f/na/ surface 



Concrete r/ng 



"I 



\ 



| 



ii 



| 

 i 



After University of Minnesota 



Fig. 285. Showing proper method of constructing a shallow well. At 

 approximately 4 feet from surface a ring of concrete has been placed around the 

 wall. This prevents the passage of water along the wall, while the hard brick 

 laid in cement mortar prevents access of water through the wall. The sloping 

 surface around the top throws all drainage water and waste water from the 

 pump away from the well. The sanitary condition of such a well is vastly 

 superior to that of the well shown in Fig. 284. 



be made of two thicknesses of plank, with overlapping 

 joints, care being taken to fit it tightly on top of the wall 

 to prevent the entrance of small insects; and water should 

 be prevented from flowing through the openings by raised 

 cleats or strips of tin. Dealers in sewer supplies handle 



