I am currently preparing for a home addition. My existing home uses
2x4's for the roof rafters instead of 2x6's. The Glen Martin specs
call out for 2x6's. Glen Martin (obviously) cannot recommend
installing one of their roof towers on a roof with 2x4 rafters. I
asked the architect and structural engineer to spec reinforcement of
the roof rafters where I would like to install a roof tower. I gave
him the specs for two of the Glen Martin towers: the 9ft tower and the
17ft tower. The structural engineer had no problem with the 9ft
tower, but he was very concerned about the leverage generated by the
17ft tower. In the end, he recommended "doubling up" the 2x4s but
still wouldn't recommend putting the 17 footer up there. The
architect suggested guying the roof tower. I know that there have
been numerous discussions on this board about NOT guying self
supporting towers. Would that advice still apply to a 17ft. roof
tower (assuming I wanted to go that route, rather than the 9 footer).
Any other suggestions, advice, etc. related to this?
_______________________________________________
See: http://www.mscomputer.com for "Self Supporting Towers", "Wireless Weather
Stations", and lot's more. Call Toll Free, 1-800-333-9041 with any questions
and ask for Sherman, W2FLA.
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