Horizontal Directional Drilling (HDD)
Horizontal Directional Drilling (HDD)

Author: David Willoughby

Publisher: McGraw Hill Professional

Published: 2005-06-24

Total Pages: 408

ISBN-13: 0071502130

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This is a complete sourcebook of information on Horizontal Directional Drilling, the installation of pipelines and utilities beneath obstacles such as water and roadways. HDD is a fast-growing technology in the trenchless industry. Provides technical information on the design, permitting, construction, bid documents, specifications, and construction of HDD applications Numerous HDD calculations with examples

Handbook of Polyethylene Pipe
Handbook of Polyethylene Pipe

Author:

Publisher: Plastics Pipe Institute

Published: 2012-02

Total Pages: 620

ISBN-13: 9781952632006

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Published by the Plastics Pipe Institute (PPI), the Handbook describes how polyethylene piping systems continue to provide utilities with a cost-effective solution to rehabilitate the underground infrastructure. The book will assist in designing and installing PE piping systems that can protect utilities and other end users from corrosion, earthquake damage and water loss due to leaky and corroded pipes and joints.

Development of a Standard Specification for Horizontal Directional Drilling
Development of a Standard Specification for Horizontal Directional Drilling

Author: Alan Atalah

Publisher:

Published: 2013

Total Pages: 45

ISBN-13:

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Horizontal Directional Drilling (HDD) has become one of the fastest-growing trenchless technology construction methods for the installation of underground pipelines and conduits. According to the board of directors of the Ohio Horizontal Directional Drilling Association (OHDDA), there are many HDD specifications employed in Ohio, and these specifications vary significantly in their content and requirements. Consequently, inferior products may have been installed, unnecessary risks may have been taken, and the competition among contractors may have been compromised. Therefore, a HDD specification that provides for high quality installations, allocates risks appropriately, and ensures correct design and installation of product pipes without damaging the roadway is needed. The proposed draft was based on comparison of more than 12 existing HDD specifications with the HDD Good Practice Guidelines and the collective input from professional partners representing the interest of the various entities involved in a typical HDD project. The research team along with the professional partners proposed draft specification for pressurized applications with pipe diameters in the range of 4 inches (10 cm) to 24 inches (60 cm). Installations outside this range of pipe sizes and gravity installations are beyond the scope of the specification. The implementation plan for the draft specification includes ODOT review to ensure it does not conflict with other ODOT specifications, ODOT evaluation of the proposed specification through use on an actual project, feedback from the larger interest groups across the state of Ohio, and update as needed.

Development of a Model for Productivity of Horizontal Directional Drilling (HDD)
Development of a Model for Productivity of Horizontal Directional Drilling (HDD)

Author: Mohmd Sarireh

Publisher:

Published: 2011

Total Pages:

ISBN-13:

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Horizontal Directional Drilling (HDD) is a growing method for installation of pipes in urban areas and where trenching is impossible or undesirable; such as in crossing rivers, lakes, railways, and special areas such as airports. This technique utilizes downhole cutting heads to create a pilot borehole before it is enlarged with back reamers to allow pulling back of a product pipe. The utilization of HDD for the installation of underground infrastructure (i.e., water, wastewater, oil and gas pipes, telecommunication, and power conduits), has shown a rapid growth compared to other trenchless technologies. HDD can install a range of pipe diameters from 2 to 60 inches utilizing different pipe materials including steel, high density polyethylene (HDPE), polyvinyl chloride (PVC), and ductile iron pipe (DIP) with minimum surface and daily life disruptions. Estimation of HDD productivity, project duration, and quantity of materials required, is a difficult task due to variable productivity conditions such soil, project, contractor, and machine conditions involved in operation. The objectives of this research are to define the significant subconditions that affect HDD productivity by utilizing the analysis of variance (ANOVA) model, to develop HDD productivity prediction model, and to develop HDD user interface as a planning tool for operation. Initially the main productivity conditions and subconditions were identified through literature review and consulting the HDD experts and professionals. A HDD questionnaire was designed, reviewed, and sent to HDD experts (contractors, design engineers, and consultants) to collect data addressing HDD operation conditions required for testing significance of subconditions and modeling operation productivity. HDD subconditions that show significance by ANOVA model analysis will be used to model HDD productivity in clayey and rocky conditions. This model is applicable in predicting HDD productivity to estimate duration of HDD project, in addition to other project parameters such as quantities of materials required and cost of labor. Applications on HDD productivity model will be useful for consultants and contractors for planning, scheduling, and bidding of HDD projects during preconstruction stage, as well as during installation and construction.