APPLICATION OF GRAPHIC METHODS 



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theie are three bearing joints in an element having no weight 

 or mass, the three lines of pressure must lie in one plane, and 

 either be parallel or intersect in one point. Any one of the 



forces supplied may be looked upon as the equilibrant of the 

 two others. The forces which this element supplies might 

 therefore be replaced by three ideal half links, each coinciding 

 in position and direction with the line of bearing pressure at the 



