100 



FARM BUILDINGS IN SOUTH AFRICA 



R, to receive the screws which hold the corrugated iron (above the door) 

 and also the protector C. The latter is of plain galvanised iron, and is 



designed to prevent rain from 

 penetrating between the corru- 

 gated iron and the head of the 

 door frame. 



An architrave, E, is nailed to 

 the door frame, the corrugated 

 iron at each side of the latter 

 being hammered flat for the archi- 

 trave to lie upon. 



The protector C projects about 

 1£ inches beyond each end of the 

 architrave E, its ends being in- 

 serted in horizontal slits cut in 

 the corrugated iron which runs 

 right up and down each side of 

 the door. 



It will be observed that each 

 stop-strip is notched out in three 

 places to clear the ledges of the 

 door. 



Fig. 109. 



Windows. 



Windows are for the purpose of admitting light to the interior of 

 a building ; in the great majority of cases they also form a part of the 

 scheme of ventilation. 



A window consists of two principal parts, (1) the frame, and (2) the 

 sash or sashes. 



The frame may be either solid or hollow ; in the latter case it is 

 termed a box-frame. 



The word sash is used to denote the part which carries the glass. 

 The sashes are attached to the frame in various ways, thus we may 

 have : — 



(a) A solid frame with a fixed sash ,• the window cannot be opened. 



(b) A solid frame with horizontally hung sash (or sashes). The 



sash generally swings on a horizontal axis coinciding with 



