Assume a 46 ft pole with a 24 in. circumference at the pole top and a 50 in. cırcumference at ground level. Also assume a wind velocity of 60 mph and an average span of 250 ft. The pole carries two crossarms, and each crossarm carries three conductors. The top crossarm is 1 ft below the pole top, and the lower crossarm is 2 ft below the top crossarm. Use hard-drawn copper conductors of 250 kcmil with 12 strands and 4/0 with 7 strands for the top and lower conductors, respectively. Assume that 6.5 ft of the pole is below the ground and find the total pressure of wind on pole and on conductors.
Assume a 46 ft pole with a 24 in. circumference at the pole top and a 50 in. cırcumference at ground level. Also assume a wind velocity of 60 mph and an average span of 250 ft. The pole carries two crossarms, and each crossarm carries three conductors. The top crossarm is 1 ft below the pole top, and the lower crossarm is 2 ft below the top crossarm. Use hard-drawn copper conductors of 250 kcmil with 12 strands and 4/0 with 7 strands for the top and lower conductors, respectively. Assume that 6.5 ft of the pole is below the ground and find the total pressure of wind on pole and on conductors.
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Transcribed Image Text:Assume a 46 ft pole with a 24 in. circumference at the pole top and a 50 in.
cırcumference at ground level. Also assume a wind velocity of 60 mph and an average span of
250 ft. The pole carries two crossarms, and each crossarm carries three conductors. The top
crossarm is i ft below the pole top, and the lower crossarm is 2 ft below the top crossarm. Use
hard-drawn copper conductors of 250 kcmil with 12 strands and 4/0 with 7 strands for the top
and lower conductors, respectively. Assume that 6.5 ft of the pole is below the ground and find
the total pressure of wind on pole and on conductors.
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