THE FRAMEWORK. 27 
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, 11 feet high at the ridge and 4 feet at the 
eaves, with sash-bars 13 feet long. These bars have a body 
measure of 1% x 1¥%4 inches, and carry glass 14x 24 inches. 
They are supported in the center by a 1%-inch pipe. A 
iz. Construction of a rafter-and-sash bar 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. 
