[TowerTalk] Basic tower installation question

[Tommy]

I live in an 80-mph wind zone and am going to put up a 70 foot Rohn 45G
tower, using 3/16 EHS for the lower guys and HPTG6700 for the top guys. I
will have a 22-foot DOM 1026 mast with a 6.8 sq. ft. wind load at the top of
the mast; 10 foot below that yagi and 2 foot above the top of the tower, I
will have a 12.8 sq. ft. wind load yagi. The mast will extend 8-foot down
into the tower, through a thrust bearing and then resting on a Msquare
2800PX rotor.

 

My basic question is about the base. Should the base for this system be a
pier-pin type base or just a Rohn concrete base section? At this point I
could do either, but would like to install the best base for this system.
The other question would be would it really make any significant difference
which type base to use for this application, considering the load I will
have at the top of the tower?

 

Thanks for any information/suggestions.

 

Tom - W4BQF