In a message dated 7/13/2007 6:35:24 P.M. Pacific Daylight Time,
towertalk-request@contesting.com writes:
> What is the advantage of a pier pin base?
It equalizes the compressive forces coming down the tower legs. Drive
down the road and you'll see big commercial microwave towers with pier pin
bases. They also have 6-way guying.
For big loads like microwave dishes (a 10' dish has about 50 sq.ft. of
windloading), it's pretty SOP. For typical ham towers and loads, it's not as
necessary.
For construction purposes, burying the base in concrete is much easier
and faster IMO.
Cheers,
Steve K7LXC
TOWER TECH
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