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11-10

ตารางที่ 11.2 Capacity of Anchorage Cable

Size ( inches ) 3/8 1/2 5/8 ¾ 7/8 1 1 1/8 1 1/4 1 3/8 1 1/2
Wt / Ft ( approx ) 0.23 0.04 0.63 0.9 1.23 1.6 2.03 2.5 3.03 3.6

GRADE BREAKING STRENGTH ( POUNDS )

MPS 10,000 17,000 26,200 37,400 50,800 66,000 83,000 102,000 123,000 145,000

PLOW STEEL 11,000 18,800 28,800 41,200 56,000 73,000 92,000 113,000 136,000 161,000
IPS 12,600 21,600 33,200 47,400 64,400 84,000 106,600 130,000 157,000 185,000

1. The strength varies slightly with the strand construction and the number of strands.

2. The strength varies approximately with the square of the diameter. For example: 3/4 –inch rope is 4 times as
strong as 3/8 - inch rope of the same material ( 3/4 ) 2 หารด้วย ( 3/8 ) 2 = 4