• 9 minutes

Design for Planning and Permitting


Design Rule: It must be constructible. Consider performance not method specifications.

A critical part of the design process is to recognize that the owner/engineer selects the HDD process; and the contractor selects the industry practice. Design objectives need to provide adequate work area, proper location for work, and geometry supporting product and tools, among others. This video reviews survey data, subsurface risks and associated cost/benefit, and regulatory traps.

Runtime: 9 minutes



Brian Dorwart, PE, PG

Brian Dorwart, PE, PG

Brierley Associates

  • Senior consultant with Brierley Associates located in their New Hampshire office
  • Professional engineer and geologist for 30+ years with 25+ years’ experience with Horizontal Directional Drilling design, construction, forensic, and litigation
  • Conducts regular seminars and workshops on Horizontal Directional Drilling and Trenchless Technologies at local and national conferences, universities, and professional organizations
  • Author of several publications related to the areas of Horizontal Directional Drilling
  • B.A. degree in geology, University of Rochester; graduate studies in civil engineering at University of Buffalo; MSCE specialized in geotechnical engineering from University of Massachusetts
  • Can be contacted on his cellphone- 617-510-8090, office- 603-206-5575 or [email protected]

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