[TowerTalk] method of installing base bolts

[Vic]

I'm going to be installing a guyed structure soon and using the existing 9 
yards of concrete pad .. I understand a common practice is to drill holes 
for the new pier pins or bolts about 18 to 20 inches in the existing pad .. 
then using an epoxy to hold the bolts in place .. When I worked for a 
utility company many years ago we heated sulphur to a liquid state & poured 
to hold "dead ends" & guy wires in metro areas.. also we used Thorogrip, 
trade name, (a portland compound) .. the melted sulphur & the portland 
compound worked ok but I'm not familiar with the type or trade name of epoxy 
used today ..

What is the consensus of the group on the recommended depth of the holes & 
the trade name of the material to secure the bolts ?? cheers de Vic //