jw wrote:

No. Rule of thumb is at least 1/3 of the pole buried for a fence. I
have similar soil. Heavy black dirt/clay.

Something with the loads you are talking, I would think this would be
the minimum. So, as others have suggested get 16' poles and around
4-5' deep.

JW

I think the depth depends on the soil type, the perma-frost line, the heaving of soil...
Northern clim's need deeper for the frost and heaving more than the south.

The south has some bad (to build in) clays that tend to heave or just give way.

SO many variables.

Martin

--
Martin Eastburn
@ home at Lion's Lair with our computer lionslair at consolidated dot net
NRA LOH, NRA Life
NRA Second Amendment Task Force Charter Founder

----== Posted via Newsfeeds.Com - Unlimited-Uncensored-Secure Usenet News==----
http://www.newsfeeds.com The #1 Newsgroup Service in the World! 120,000+ Newsgroups
----= East and West-Coast Server Farms - Total Privacy via Encryption =----