THE FRAMEWORK. 



2 7 



the sash-bars, each bar being secured to the purline by a 

 loop of strap iron, the house may be made as stiff as 

 the old-time rafter-built frame. Fig. 14 (page 31 ) shows the 

 interior of Figs. 12 and 13. The house (used for tomatoes) 

 is 24 feet wide, 1 1 feet high at the ridge and 4 feet at the 

 eaves, with sash -bars 13 feet long. These bars have a body 

 measure of i^x i> inches, and carry glass 14x24 inches. 

 They are supported in the center by a i>(-inch pipe. A 



//. Construction of a. rafter-and-sash. oar frame. 



row of these pipe supports upon either side of the house is 

 the only intermediate support which the roof receives ; yet 

 this house stands in an exposed place and has withstood 

 several severe gales without the slightest injury. A similar 

 sash-bar construction is shown in Fig. 15 (page 32). Another 

 is seen in Fig. 16 (page 34), but in this case the bars are 

 nailed to wooden plates which rest upon pipe supports. 



