76 



FARM BUILDINGS IN SOUTH AFRICA 



Oblique Tenon Joint.— This type of joint is illustrated by Fig. 81. 

 It may be used for the fronts of cattle-sheds, verandahs, etc., when 

 it is desired to space the posts rather far apart. The roof-plate is 

 afforded support between adjacent posts by two oblique struts which 

 are jointed to the roof-plate, and to each post, by the joint under 





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Fig. 79. 



Fig. 81. 



discussion. An example of this is shown, in the case of an implement 

 shed, by Fig. 86. 



A 4|" by 3" roof-plate would, in general, require to be supported 

 in this way, if the distance between posts exceeds 8 feet. 



Very often the mortise and tenon are omitted, the joint between 

 oblique strut and post or roof-plate being otherwise the same as that 

 illustrated. 



Bridle Joint. — A bridle joint between a post and a beam or rail is 

 illustrated by Fig. 82. This type of joint should be stitch-nailed, i.e. 

 fastened by nails driven at an angle from each side of the post into 

 the beam. 



Notching. — Fig. 83 shows a post notched to a beam or rail. This 

 joint is extensively used in constructing timber framing for wood 

 and iron buildings. Like the bridle joint, it also should be stitch- 

 nailed. 



Dovetail Joint. — An excellent joint for angular work is made by 



