SAW TOOTH ROOF 183 



ing satisfactory and efficient gutters, and in preventing condensation 

 on the inner surface of the glass and gutters. Another objection to the 

 use of saw tooth roofs in localities having a heavy snowfall is that the 

 snow drifts the roof nearly full and shuts off the light. The common 

 method of preventing the snow from collecting, and for taking care of 

 the roof water, is that given in the description of the Conkey plant, 

 which see. 



The modified saw tooth roof shown in (b), Fig. 84, is pro- 

 posed by the author as a substitute for the usual type of saw tooth 

 roof shown in (a). This modified saw tooth roof allows the use of 

 ordinary valley gutters, and gives an opportunity to take care of the 

 condensation on the inner surface of the .glass by suspending a gutter 

 at the bottom of the monitor leg. Snow will cause very little trouble 



South End North End 



(a) Saw Tooth (Weaving Shed) 



South End North End 



-qlass 

 y 



Cb) Modified Saw Tooth 

 FIG. 84. 



with this roof on account of the increased depth of gutter. The mod- 

 ified saw tooth roof has a greater pitch, and has a more economical truss 

 for long spans than the common form shown in (a). Condensation on 

 the inner surface of the glazed leg can be practically prevented by us- 

 ing double glazing with an air space between the sheets of glass. Double 



