148 



COMMERCIAL POULTRY RAISING 



it is then necessary to commence at the end of the system, work 

 backward, and take down the entire system. 



Make a rough diagram of the proposed scheme first, measure 

 the distances accurately, and, bearing in mind that pipe is pur- 

 chased in sixteen- and twenty-foot lengths, ascertain the number 

 and kinds of fittings required. One-inch pipe is plenty large 



Fig. 104. — Perches arranged in sections which hinge upward clear of the drop- 

 ping-boards for cleaning. 



enough for the mains, reducing to ^-inch pipe for the branch 

 lines and connections. 



In addition to the enormous saving in labor of watering the 

 flocks, a water system having connections in all the principal 

 houses is a very vital factor toward fire protection. A plant thus 

 equipped is usually able to obtain fire insurance at a lower rate, 

 hence this saving should be credited to the original outlay' for the 

 water system. 



