By Joel D. Moore, Engineer (PE), JHA Companies
Over the last 25 years, I have been involved with designing and inspecting horizontal directional drills (HDD) for pipeline construction, attending numerous seminars, purchasing many texts and reading countless white papers related to the subject. Of much more educational value (and fun) is the many hours spent on drilling sites, asking questions and listening intently to the folks running the drill.
Photo: Joel Moore/JHA Companies
Listening to all of the “hands” on the site that know a lot more than “those engineers” has taught me several rules of thumb for HDD design. So now that I am
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