46 



FARM BUILDINGS IN SOUTH AFRICA 



Clear span not 

 exceeding — 



3' 6" 

 4' 0" 

 i' 6" 



5' 6" 



Depth of lintel. 



Three courses of brickwork. 



Pour courses of brickwork. 



Four courses, with heavy section fencing standards, 



weighing 3 lbs. per foot, built one into each 9 inches 



of width of soffit, or part of 9 inches. 

 Four courses, with two rows of fencing standards 



spaced as above. 



For openings exceeding 5' 6" in width use 4" by If" by 5 lbs. 



per foot rolled steel joists, say one for spans of from 6 to 8 feet, 



and two for spans exceeding 8 feet." 



The above specification does not call for reinforcement of lintels 





Wmdow 

 Bo/fffo 



the span of which is less than 4 feet. As, however, partially skilled 

 labour is often employed on farm buildings, it might be well to reinforce 

 all lintels the span of which exceeds 3' 6". 



Window Sills.— Window sills are generally of brick, Fig. 37, or of 

 concrete, Fig. 41. 



