104 



FARM BUILDINGS IN SOUTH AFRICA 



then covered by an edging of putty (round the pane) which excludes 

 rain and also helps to hold the glass fast. 



Windows in Corrugated Iron Buildings. — The method of fixing a box 

 window-frame in a wood-and-iron building is evident from Fig. 112. 



A couple of 4£" by 1|" posts, 



A, A, are erected about 1 inch 

 further apart than the extreme 

 width of the window-frame, 

 their ends being checked into 

 the topmost and bottommost 

 rails, D, D, to a depth of about 

 | inch. Between these posts 

 two rails, B, B, are inserted at 

 a vertical distance apart ex- 

 ceeding the extreme vertical 

 height of the window-frame 

 by about 1 inch; the ends of 

 these rails are checked into 

 the posts to a depth of about 

 ^ inch. The window -frame 

 rests on the lower B rail, so 

 that its outer face projects 

 | inch beyond the faces of 



UzB 



Fig. 112. 



the posts A and the rails B. This allows room for the corrugated 

 iron. The window-frame is wedged in position by wooden wedge3 

 driven between it and the posts A, and is also stitch-nailed to the 

 rails B. 



Rain is prevented from penetrating between the corrugated iron 

 and the top of the window-frame by a protector C, consisting of a 

 strip of plain galvanised iron bent to an angle as shown, and having 

 its upturned part inserted behind the corrugated iron and attached to 

 the upper B rail by the same screws as attach the corrugated iron. 

 The protector C is longer than the window-frame is wide, by about 4 

 inches, the ends being inserted in horizontal slits cut in the corrugated 

 iron which runs right up and down each side of the window. 



An architrave, E, is fitted round the window-frame, to hide the 

 junction of the wood and the iron. It is nailed to the window- 

 frame and to the posts A, A. In driving nails care should be taken 



