DETAILS OF WINDOWS 



309 



The sash frames are constructed of white pine and are glazed usu- 

 ally with A qualityAmerican glass. The common sizes of glass used in 

 these windows are 10" x I2",i2"x 12", 10" x 14" and 12" x 14" single 

 strength. For lights larger than 12" x 14", double strength glass is 

 used. The window shown in Fig. 152 is used where light is desired 

 without ventilation. This detail is used principally for monitor ven- 

 tilators or for windows placed out of reach. Where it is desirable to 

 obtain ventilation as well as light the window frame with sliding sash 

 shown in Fig. 153 is used. 



Cor Steel 

 (Hashing 

 (Purlin 



rLaq Screw i "*/ " 



ELEVATION 



Lag Screw , x 



//>/?" i fl&'xiStop 



r. 



SECTION 



'--> 



\+or- 

 *" / V Rovnaf ' K _ yy 



PLAN 

 FIG. 153. DESIGN FOR WINDOW FRAME WITH SUDING SASH. 



