ROPE, WIRE, AND BELTING 



301 



TEST OF INDIVIDUAL WIRES TAKEN FROM THE WIRE ROPE 

 REPORTED ABOVE 



In the above table the actual sectional area of the wire in the rope 

 is given, and the tensile strength in lb./in. 2 has been computed by 

 dividing the total load by this area. An examination of the table 

 giving the strength of the individual wires shows that the intensity 

 >f -tress is greater in the case of the individual wires than in the wire 

 : that is to say, the structure of the rope causes the wires to lose 

 <f their efficiency. 



UI.N'.ni OF IKON \VIKK KOl'K AS GIVEN BY JOHN A. ROEBLING 

 (Rope composed of six strands and a hemp center, seven or twelve wires in each strand) 



