Question
Transcribed Text
15FT
STEEL
• A Ø0.25in Steel Wire Rope is secured between 2 steel poles using wire rope pole clamps (steel) • The Steel Wire Rope has a breaking Strength of 2000lbs. • The Steel Wire Rope weights 0.11lbs./FT (0.11 pounds per foot) • The span of the Wire Rope is 15 feet • The Wire Rope is initially tensioned to 45lbs. • The Wire Rope carries 3lbs./ft (3 pounds per foot) • The Wire Rope is installed during the day when the temperature is at 105°F(41°C) • At nighttime the temperature can drop to 45°(7°C)
Ø0.25IN
WIRE ROPE
Question: If some Steel Wire Rope is installed during the day when the temperature is at
105°F(41°C) and at night time the temperature drops to 45°F(7°C).
Due to the change in temperature, the steel wire rope and steel clamps will contract
throughout the day.
How much sag/slack needs to be initially put into the steel wire rope so when it contracts
throughout the day it does not tension too tightly and break?
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