Setting the base in a solid medium, means the tower has to tale all the
torque while with the pier pin base, the guying system has to take all
the torque. I believe torque arms are a poor substitute for a star
guying system
I'd certainly not climb 30' of free standing 25G to install permanent
guys after a friend was permanently disabled when 30' of 25G broke
over. My 45G base is in cement. Knowing what I know now it would be on
a pier pin base, but any way I think the third section should have
temporary guys on it when it goes up. Every section should be plumbed,
or at least leveled in the vertical plane on 2 legs. I've seen some
small towers, including one 25G that were not as straight as they should
have been. Using guy tensioning order to straighten these can put
additional stress on sections and joints reducing the tower's overall
strength for both weight and wind load.. It might be much, but it might
be enough to be a problem with weight, or antenna area in high winds.
Of course, I don't know any hams who load a tower with the idea that the
built in safety factor will make it safe.
73
Roger (K8RI)
On 1/29/2016 Friday 1:12 PM, TexasRF--- via TowerTalk wrote:
Ken the only advantage is the tower can be stacked up to the first guy
level without a need for temporary guys. Not a big deal but if working alone it
can save a lot of time.
73,
Gerald K5GW
<snip a whole bunch of "stuff">
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