I work with a small windpower company out of Reno. We've recently completed a job in N.C. with soil blow counts below 15 for the first 30'. Our solution was a foundation repair company based out of Oklahoma. They have dealers everywhere, but their headqaurters has a host of engineers that...
I've been doing some design on a field in AZ, the company I found most impressive was Ram Jack. They have a screw together connection instead of the conventional blot through. If the piling is more than one extension this lessens the lateral flex. They've started a subdivision dedicated to...