148 



GARDEN DESIGN 



DIAGRAM 55. 



In making designs 

 for wooden gates 

 certain structural 

 facts must be borne 

 in mind. 



In Diagram 55 

 ABCD is a gate 

 supported at A B, 



the weight being at B, and acting as a lever of 

 the second order. A corresponding power at D 

 is needed to es- 

 tablish e q u i 1 i- 

 brium. This of 

 course is out of 

 the question, but 

 a support of twice 

 the length at an 

 angle of 45 would 

 serve the same 



purpose. Twice the length would be clumsy, but 

 gates are frequently made as in Diagram 56, 



with the natural 

 length of the 

 diagonal in- 

 creased as far 

 as is consistent 

 with the ap- 

 pearance, in 

 order to coun- 

 teract the ten- 



DlAGRAM 56. 



DIAGRAM 57. 



