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[TowerTalk] Mast wall thickness

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Subject: [TowerTalk] Mast wall thickness
From: (Dick Flanagan)
Date: Fri, 10 Apr 1998 17:56:28 -0800
At 11:36 AM -0800 4/10/98, Donnie Murray (KE4RNA) wrote:

>What is the recommended wall thickness for 2" chrome-moly tubing used
>for a mast? I will have 5' inside the tower with a thrust bearing at
>the top. Two feet above that will be an antenna with 18 sq ft wind
>loading. Ten feet above above the bearing will be an antenna with 1.8
>sg ft wind loading.

50,000 PSI at 0.188" wall should be OK at 80 mph winds.
60,000 PSI at 0.250" wall should be OK at 100 mph winds.

73, Dick

Dick Flanagan W6OLD CFII Minden, Nevada DM09db (South of Reno)

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