Page 117 - McWane Poles Sales Manual 2024
P. 117
Sales Manual • 2024
117
Results:
Class 1 Tip Load (2.95 kips)
The Class 1 pole design is based on a 2.95 kip load applied 2’ from the tip. The measured tip deflection
for cycle 2 is 42.3” (measured at class load) minus 2.9” at the start of cycle 2 equals 39 .4”. This value
is greater than the calculated deflection shown in the PLS pole design output of 35 inches. This small
difference could be attributed to pole rotation at the supports when compared to a theoretical fixed
groundline.
Yield Tip Load (3.06 kips)
The yield tip load was calculated to be 3.06 kips. This value is the point along the pole where the actual
bending stress reaches a calculated bending stress of 42 ksi. The measured tip deflection for cycle 2 is
44.1” (measured at yield load) minus 2.9” at the start of cycle 2 equals 41.2”. This value is slightly greater
than the calculated deflection shown in the PLS pole design output of 37 inches.
Failure Tip Load (5.04 kips)
The 5.04 kip load applied 2’ from the tip resulted in a pole failure at the ground line. The failure was
buckling of compression face at the ground line.
Conclusion:
The 50 class 1 ductile iron pole was subjected to a full-scale, horizontal bending test. The ultimate failure
tip load was 5.1 kips which was 165.0 percent of the calculated yield tip load.
