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Product ID: 403551EAU
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Innovations in Trenchless Technology

OnDemand Webinar (98 minutes)

Understand the application and design components of Horizontal Directional Drilling as it applies to your project.Horizontal Directional Drilling has been associated with numerous utility strikes, cross bores, damage to adjacent infrastructure, overlying settlements, and loss of drill fluid to the surrounding environment. These issues have led to costly catastrophic failures and regulatory noncompliance project shutdowns. However, pipeline, telecom, power, and municipal infrastructure owners and engineers need trenchless construction options such as Horizontal Directional Drilling to rehabilitate, replace, and create new infrastructure. Trenchless construction offers higher utility density in restricted corridors, mitigates impacts to existing utilities and social impacts, and is a Green Technology. Horizontal Directional Drilling advances in design and equipment permit this trenchless technique to responsibly install underground pathways from two inches up to and exceeding 60 inches in diameter and lengths exceeding 5,000 feet including in urban areas. This topic helps owners and engineers understand the design and construction process associated with Horizontal Directional Drilling. Furthermore, this content will provide the basic design equations and example calculations demonstrating the purpose of developing adequate baseline data and assumptions necessary to support a successful Horizontal Directional Drill design and construction.


Brian Dorwart, PE, PG, Brierley Associates


Feasibility of Using Horizontal Directional Drilling â€' Design Must Be Constructible With Available Equipment and Within Industry Practices

• Equipment Capabilities: Drill Angles, Steering

• Subsurface Risks: Utilities, Geology, Grade and Lateral Tolerances

• Basic Rule-Of-Thumb Criteria for Minimum Length and Geometry Based on Pipe and Drill Steel Properties

• Preliminary Depth and Clearances for Geometry

• Desktop Study for Issues Associated With Subsurface Conditions Utilities and Geology

• Planning for Work Area Sizes and Layout

• Cost Estimating â€' Top Down and Bottom up

Design for Planning and Permitting

• Accurate Survey Data With Locations and Elevations and Benches for Construction

• Preliminary Geometry Calculations

• Subsurface Risks and Associated Cost/Benefit in Planning Subsurface Exploration Program

• Regulatory Traps â€' Contingency Planning, Only Agree to Do What Can Be Constructed

Design for Construction

• Integration of Subsurface Data and Geometry â€' Calculation of Pressure Curves

• Management of Subsurface Risks by Design and in the Contract â€' Who Is Best Equipped to Manage Risk?

• Plans and Specifications

Construction Engineering

• Design and Design Assumption Verification With Instrumentation

• Assess Pilot Drill Geometry

• As-Built Documents


Additional Formats

Audio & Reference ManualMore Info