[TowerTalk] Two More Prime Directive Questions

[Gary "Joe" Mayfield]

I am preparing to put the base in for a Rohn HDBX-48.  The diagram shows two
things that concern me.

 

There is a horizontal criss-cross of #3 rebar that goes into the concrete 3
inches from the top and another 3 inches from the bottom, on 12 inch
centers, or "welded wire fabric" may be used.  

 

1.  Is that really enough steel?  Is there really no vertical steel other
than the bolts?

 

My hole should be 5'9" by 5'9" by 4' deep according to the diagram.

 

2.  4 feet is right at the edge of my frost line, should I go deeper?

 

 

Thanks Again and 73,

Joe kk0sd