Hot Water Heating. 3i 



plants can be grown in this manner, for fine work this 

 method is useless, and unworthy the space necessary to 

 describe it. 



CHAPTER V. • 



HOT WATER HEATING. 



Hot water is used in three forms. The first and 

 original method of laying pipes, consisted in having 

 the flow rise gradually from the boiler to the extreme 

 end of the house, a rise of one foot in one hundred be- 

 ing deemed sufficient. At this point an expansion or 

 standpipe was usually placed, and from it the water 

 returned to the boiler in aiiother set of pipes, having 

 the same fall as the flow had elevation. 



The pipe used in this system is four-inch cast iron 

 in lengths of about five feet, and a quick and durable 

 way to p^it this together is as follows : 



Buy a coil of eight strand, inch and a quarter hemp 

 rope. Cut this in lengths that will allow a strand to 

 go twice around the pipe. Put this once around the 

 joint and tamp it lightly. Between this and the next 

 layer of hemp, put about the same quantity of Portland 

 cement as you have of rope. The cement should be of 

 the consistency of good putty. Tamp in another strand 

 of hemp. This, when well tamped, will fill the joint 



