TABLE 8. TEST FOR STRETCH CHARACTERISTICS OF PRELOADED STANDARD 

 B.T. CABLE SPECIMEN 476, WIRE CABLE, 3/32" DIAMETER 

 (100-FT LENGTH) 





Number of Turns 



Time 







Load 



To To 



From Start 



Stretch 





(lb) 



Unwind Wind 



(hr) 



(in. /50 ft) 



Notes 



292 



152.5 



40.0 

 21.0 



11.75 

 7.75 



3.75 

 0.75 

 Load raised 50 feet 

 Load lowered 50 feet 

 45.0 



4.0 

 14.25 

 1.5 







48 

 120 



2.47 



4.00 

 3.75 



Data required were limited to 

 stretch characteristics after 

 preload; therefore, the prelimi- 

 nary stretch measurement was 

 not taken. 



196 



42.25 

 4.0 





2.25 







Load raised 50 feet 



144 



2.00 







Load lowered 50 feet 











3.25 











2.0 



168 



1.97 

 1.97 





100 



39.0 



6.5 







As the load was lightened, the 

 reduction in elongation indicated 





2.0 





0.35 



a zero elongation at 100 pounds. 





Load raised 50 feet 



240 



0.35 







Load lowered 50 feet 











9.0 



264 









3.0 

















288 



1.63 



Permanent stretch. 



22 



