[TowerTalk] Rohn Tower Pier Pin install

[CEPitts]

Need the correct way to do this. In my search efforts could not find any 
documentation involving this issue. Having installed and taken down 
various tower installs in the past I am about to do a install involving 
a pier pin with the standard Rohn galvanized base.

Previous experiences with installs and take downs has always been 
sections and rebar placed in the hole, various fold overs and extension 
towers but never a pier pin until now, Go figure!

I am using Rohn products and yheir guidance from the their book and my 
question is the correct way to install the 3/4" x 12 pin into the 
concrete base. Do I place the pin into the fresh concrete after it is 
poured and of course before the concrete cures supporting the pin so it 
is plumb and vertical above the base of the concrete by approximately 3-4" ?

Or do I drill out a hole once the curing has subsided in  approx 30 days 
and insert the pin with some epoxy concrete hardener applied to the pin 
upon insertion?

I have a hammer drill but not relishing the thought of the latter with a 
bit to handle the 3/4" diameter along with the cost of purchasing said 
drill bit designed for concrete use.

Thanks for responses in advance, 73! Charles "Ed" K5OF in NC