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Old 04-27-2017, 11:09 AM
Brion Toss Brion Toss is offline
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Join Date: Jun 2005
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Hello,
Yes, a definite problem. Spreader thrust from the weather upper will be working on a rather long lever arm. On the other hand, if the mast section is right for a lower spreader location -- think unsupported length -- then raising the shroud attachment point might increase buckling vulnerability to an unacceptable degree. Not really likely, but definitely worth checking on. This is your opportunity to run a stability test and some mast scantling numbers. If the section checks out okay with the higher attachment, just move the lowers up to the spreaders.
Note that all of the above assumes that the old spreader location was correct in the first place. No guarantee here; it might even have been a contributing factor to the dismasting. But again, those mast moment numbers will reveal what is needed.
Fair leads,
Brion Toss
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