FIGURE 2 illustrates a typical geometry for a maxi-HDD operation, in this case corresponding to a river crossing. High-density polyethylene pipes are now widely used in the sewer industry. For a drill of this length, with a pull back of 10 inch HDPE pipe, the anticipated schedule is set out in Table 2: Table 2. Coiled products should be restrained before being released or cut. Learn about the various stages of construction. HDPE water pressure pipes can be connected by a process called butt fusion, where the ends of the pipes are heated and joined together. 0000010170 00000 n with relatively shallow entry and exit angles, the associated load amplification due to this effect is not major; although for more complex paths, the effect could be very important. trailer endstream endobj 746 0 obj <>/Metadata 20 0 R/OCProperties<>/OCGs[758 0 R]>>/PageLabels 741 0 R/PageLayout/OneColumn/Pages 743 0 R/PieceInfo<>>>/StructTreeRoot 24 0 R/Type/Catalog>> endobj 747 0 obj <>/Font<>/ProcSet[/PDF/Text]/Properties<>>>/Rotate 0/StructParents 0/Tabs/S/Type/Page>> endobj 748 0 obj <>stream While ASTM International F1962 may be purchased from the ASTM International website (www.ASTM.org), the overall guidelines, including preliminary investigation and implementation procedures, as well as the detailed design methodology for selection of the proper pipe strength, are reflected inChapter 12 of the Plastic Pipe Institute (PPI) Handbook of Polyethylene Pipe, In addition, the ASTM International F1962 methodology is now available in a free online tool designated asPPI BoreAid. Contact us today for a free quote. Typical Maxi-HDD Route (Obstacle or River Crossing) (Courtesy of Outside Plant Consulting Services, Inc.), FIGURE 5. several outputs are shown simultaneously, along with a summary of the This phenomenon is referred to as the capstan effect, as it is the principle of the capstan winch, as illustrated in. Chapter 12 of the Plastic Pipe Institute (PPI) Handbook of Polyethylene Pipe, TR-46, Guidelines for Use of Mini-Horizontal Directional Drilling for Placement of High Density Polyethylene Pipe. Directional boring offers significant environmental advantages over traditional cut and cover pipeline/utility installations. Nominal pressure (PN) is based on C = 1,25 and an operating temperature of 20C. Whilst the drilling equipment is able to drill down from the surface at the start and come back up to the surface at the exit, there does need to be an excavation at each end to act as a sump for drilling fluid reclamation, but the most critical factor is to provide the space to transfer the new pipe from ground level down to the bore, and this will depend upon both the diameter and length of the installed pipe. The construction area is relatively small and the construction period is relatively short. %PDF-1.6 % They also have many advantages in terms of cost-effectiveness, minimal impact on the environment, and safer processes. In contrast, tooling intended to navigate soft soils may be limited to high carbon steel (milled to a desired shape and size). The image above shows a straightener re-rounder being used on a 180mm pipe, and whilst it is in the trench here, it can be attached to the coil trailer if so desired. Weight is calculated using DN and Minimum wall plus 6% for use in estimating fluid flow. was originally approved in 1999, following development within the ASTMs F17.67 Trenchless Technology Subcommittee. [citation needed], PR-277-144507-Z01 Installation of Pipelines by Horizontal Directional Drilling Engineering Design Guide (Arlington, VA: Pipeline Research Council [4], The equipment used in directional boring depends on the length of the (proposed) crossing, the pipe properties (of the to-be-installed pipeline), and the (anticipated) subsurface conditions. High-density polyethylene pipe is the most common type of pipe used in the directional drilling market and is used for 49.7% of projects. CANTEX's CAN>LOC and CAN>GRIP systems offer many benefits over HDPE, which is the conduit most used for HDD applications. Day 1 Equipment Arrives Days 2-5 Locate and identify utilities . The Conduit Design Calculator automates the Mini-HDD calculations described in PPI TR-46 Guidelines for Use of Mini-Horizontal Directional Drilling for Placement of High Density Polyethylene Pipe.. Whilst the rods are simultaneously rotated and pushed, the bore will, provided it is not deflected by some obstruction, proceed in a straight line, but if it is simply pushed without rotation it will deflect in the opposite direction to the slant face on the drilling head. As the hole is bored, a steel drill string is extended behind a cutting head. The drill rig and auxiliary equipment located on the pipe exit side are relatively large, and require water access, storage, and mixing and pumping facilities. The recent (2022) edition of ASTM F1962 has revised the relevant physical characteristics of the PE materials, providing the physical properties for the most recent high density polyethylene (HDPE) material, PE4710. It is important that, if the pipe to which the new pipe is being connected has spigot and socket joints, which will have little end load resistance, means must be provided to absorb the axial tension. The size, complexity and need for additional support equipment increases generally as the pipe diameter and length increase. The Conduit Design Calculator automates the Mini-HDD calculations described in PPI TR-46 Guidelines for Use of Mini-Horizontal Directional Drilling for Placement of High Density Polyethylene Pipe. 0000000936 00000 n What truly separates HDPE from other pipe materials is that when it is fused together (using a wide variety of standard and custom components, fittings and joining systems) it creates one homogenous system that matches the same technical and environmental specifications as the HDPE pipe. Thus, ASTM International F 1962 provides a means of determining project feasibility, as well as initial design information. This can be changed at any time via the Cookies link at the bottom of the page. Although ASTM F1962 is intended for carefully designed, well-controlled maxi-HDD installations, the methodology has been extended, via appropriate assumptions and mathematical simplifications, to provide a simpler methodology that may be advantageously applied to typical, less-controlled mini-HDD projects. North American Society for Trenchless Technology (NASTT), (2008). The use requires that the operator have complete information about existing utilities so that they can plan the alignment to avoid damaging those utilities. MDPE and HDPE pipes shall conform to the current ASTM D1248, ASTM D2513, ASTM D3350, and ASTM F714. Pull Strength of the conduit in terms of Diameter Type (IPS, SIDR, or Where large parts of the route of the main are not accessible, such as for river crossings, horizontal directional drilling is a much less costly technique than tunnelling, and can be used for large diameters, such as trunk mains. For standardization of the techniques, different trenchless technology promoting organizations have developed guidelines for this technique. 4487 0 obj <> endobj Image Courtesy:Exova Utilities, Pipe coil trailer loaded with 100metres of 180mm PE pipe. must be consistent with the steering capability of the maxi-HDD equipment, and the bending capability of the drill rods. Pipe entry point is at the opposite end of the drill rig location, which coincides with the pipe exit., shows the drilling operation proceeding from right to left, in contrast to. 0 HDPE Pipes and Fittings for Water and Gas, HDPE Pipes and Fittings for Drinking Water, Steel Wire Reinforced HDPE Composite Pipe, HDPE Pipes and Fittings for Natural Gas & Oil. and Material (type of HDPE). HDD, also known as directional boring, was developed in the early 1960s and was first used by the oil and gas industry on large-diameter, cross-country pipeline transmission line installations. The development of trenchless technology to rehabilitate existing underground infrastructure with minimal disruption to surface traffic, business, and other activities, has left a lasting impact on the construction and civil engineering industries. Pipeline Design for Installation by Horizontal Directional Drilling -. Scope, referenced documents and terminology. For such cases, the buoyant weight of the submerged pipe, in combination with the corresponding frictional characteristics, is the major factor in determining the required pull force. This weight is a function of the drilling fluid/slurrys density, for which a conservatively high value is suggested for design purposes. The physical properties of the PE4710 material allow greater pulling forces and also provide greater resistance to collapse. The drill is launched from one end of the designed bore path and retrieved at the other end, and except for the launch and retrieving spaces above ground, the entire process takes place underground . One of the significant contributions of ASTM International F1962 is the provision of a rational, analytical method for selecting the polyethylene pipe strength based upon the estimated installation and post-installation (operational) loads on the polyethylene pipe. Add: 13th F, Longyu International Building, Zhengzhou Area(Zhengdong), China(Henan) Pilot Free Trade Zone. Such results could be further refined by competent engineering expertise, including analysis of pipe and soil characteristics and interaction, often including the use of relatively sophisticated software tools, possibly based on the ASTM F1962 methodology. This picture shows a slant face drilling bit, also fitted with carbide tipped teeth that enable it to penetrate hard ground. NyPipe offers quality products, competitive pricing and reliable service. Table X3.1 provides the critical collapse pressure for HDPE/PE4710 pipes as a function of load duration and wall thickness. There is no request too small or job too complex. Supporting the 10 main sections, several appendices provide the physical properties of selected PE material, as well as a means of determining the post-installation loads and pipe deflection. Lawrence Slavin, Ph.D., provides outside plant consulting services as a member of IEEE, the worlds largest technical professional organization dedicated to advancing technology for the benefit of humanity. where the drilling proceeds from left to right. Next, the bore created during pilot hole drilling is enlarged to a diameter that will facilitate installation of the desired pipeline. Preliminary site investigation (Section 4). This is not a technique to which the lowest price wins the contract principle should be applied. path, and other project variables, to determine the Calculated Tensile Related keywords :hdd drilling, slant drilling, horizontal directional drilling good practices guidelines, drill guide for pipe, utility horizontal directional drilling, directional drilling manual, directional drilling through rock, how much does a directional driller make, horizontal directional boring specifications, small directional drill, back reaming drilling definition, horizontal pipe rollers, directional drill back reamers, horizontal directional drilling specifications hdpe, how to drill horizontally, small directional boring machine, horizontal directional drilling procedure, hdd drilling procedure, horizontal drilling techniques, horizontal bore, hdd drilling equipment, hdd machine price, straight line directional drilling, horizontal directional drilling process, horizontal directional drilling standards, horizontal direct drilling, horizontal drill guide, dig and rig equipment, what is horizontal directional drilling, drilling pipes, horizontal drilling equipment, horizontal directional drilling rig, how do they drill horizontally, what is slant drilling, drilling pipe sizes, directional drilling methods, horizontal directional drilling guidelines, horizontal directional drilling design guidelines, horizontal directional drilling machine, horizontal directional drilling specifications, hdd pipe, barrel reamer hdd, horizontal directional drilling equipment. HDPE conduit, also known as PE conduit, is the preferred material to house and protect electrical power and communications cables in typical applications such as power utilities, telecommunications, CATV, SCADA, FTTH, ITS, highway lighting, and other underground utilities. This technique involves drilling a pilot bore, generally along a closely defined shallow arc, and then, if necessary, enlarging the bore using a reamer or hole opener to create a bore large enough to accept the new PE100 pipe, which is generally pulled in behind a reamer. Over the last two decades, contractors have increasingly turned to the horizontal directional drilling (HDD) method. 0000002386 00000 n Bearing forces resulting from (previously induced) tension tending to pull the pipe snugly against any curved surfaces (capstan effect). Drilling mud is used to cool the cutter and transmitter electronics, to flush excavated soil from the borehole and to lubricate the borehole. The most significant was to the alternative guidelines TR-46 provided by the Plastics Pipe Institute (which has been superseded by its Municipal Advisory Boards MAB-7), as more appropriate for mini-HDD operations. Noise and air pollution are also kept to a minimum and rehabilitation time is short. ASCE Pipeline Design for Installation by Horizontal Directional Drilling, CAPP Planning Horizontal Directional Drilling for Pipeline Construction, MAB-07 (2020) - MAB Guidelines for Use of Mini-Horizontal Directional Drilling for Placement of HDPE (PE4710) Pipe in Municipal Applications, Slavin, Larry and Petroff, Larry (2010). Pipe manufacturers can advise on the allowable loads. Pipes installed by HDD may increase in diameter, and therefore decrease in length, when pressurised, which will result in some axial tension. The ASTM International document provides overall guidelines, addressing preliminary site investigation, safety and environmental considerations, regulations and damage prevention, bore path layout and design, implementation, and inspection and site cleanup. This page was last edited on 12 December 2022, at 19:58. illustrates the operation in a city or urban application. hbbd```b``k$T "7> Midi-HDD may be employed for boring paths up to 1,000 feet in length, at depths as much as 75 feet, and placing pipes up to 24 inches diameter. Welcome customers to visit the factory, or third party factory inspection is acceptable. The pipe must be securely gripped, including a swivel and possible breakaway link. Actual ID will vary. Using directional drilling techniques to guide a drill string along a bore path under obstacles such as rivers, lakes, railway crossings or highways, enables replacement of existing water lines, or installation of new ones, at a relatively rapid rate. Drilling for Placement of Polyethylene Pipe or Conduit Under Obstacles, Generally, the term Horizontal Directional Drilling (HDD) is intended to describe large/maxi sized drilling rigs, large diameter bores, and crossing lengths in terms of thousands of feet. [5], Tooling, as in the mechanical apparatus that are installed to the drill string to conduct operations, are available in a wide number of different shapes and sizes. Additional route bends, beyond those shown in FIGURE 2, as well as possible bends in the horizontal plane, should be avoided, and will increase the required pulling forces. A bore diameter of 1.2 to 1.5 times the PE100 pipe OD is normally required. One of the most significant contributions of ASTM F1962 is the provision of a rational, analytical method for selecting the pipe strength based on estimated installation loads on the PE pipe. ASTM International F1962, Standard Guide for Use of Maxi-Horizontal Directional Drilling for Placement of Polyethylene Pipe or Conduit Under Obstacles, Including River Crossings, provides recommended procedures for the placement of PE pipe using maxi-HDD. ABOUT THE AUTHOR: Lawrence Slavin, Ph.D., provides outside plant consulting services as a member of IEEE, the worlds largest technical professional organization dedicated to advancing technology for the benefit of humanity. With a magnetic guidance system (MGS), the tool reads inclination and azimuth. 0000002230 00000 n HDPE Electrofusion Welding Fitting with Bar Code, HDPE Fittings Butt Fusion Welding Fitting, CPVC Pipe& Fittings ASTM Schedule Series SCH40 and SCH80, UPVC Pipe& Fittings ASTM Schedule Series SCH40 and SCH80, UPVC Pipes and Fittings Underground Drainage and Sewerage Pipes, UPVC Pipes and Fittings pipes for Irrigation System, Modified Polyvinyl Chloride (PVC-M) Pipes, CPVC Pipes and Fittings for Hot and Cold Water, UPVC Conduits for Underground Telecommunication Cable, PVC (or PVCU) Rubber Ring Joints in PN10 and PN16, PVC (or PVCU) Solvent-Cement Fittings in PN10 and PN16, 63-250mm Hydraulic Butt Fusion Welding Machine, 160-315mm Semi-Automatic Hydraulic Butt Fusion Welding Machine, 225-400mm Semi-Automatic Hydraulic Butt Welding Fusion Machine, 40-355mm Semi-Automatic Hydraulic Butt Fusion Welding Machine, 200-800mm Semi-Automatic Hydraulic Butt Fusion Welding Machine, 630-2000mm Semi-Automatic Hydraulic Butt Fusion Welding Machine, 400-630mm Semi-Automatic Hydraulic Butt Fusion Welding Machine, 90-355mm CNC Automatic Hydraulic Butt Fusion Welding Machine, 200-1000mm CNC Automatic Hydraulic Butt Fusion Welding Machine, 630-2000mm CNC Automatic Hydraulic Butt Fusion Welding Machine, 20-1600mm Fully Automatic Electro Fusion Welding Machine, 63-200mm Manual Rotated Butt Fusion Welding Machine 2 Rings, 63-250mm Boutique Manual Rotated Butt Fusion Welding Machine 4 Rings, 63-200mm Manual Rotated Type Butt Fusion Welding Machine 4 Rings, 63-200mm Manual Rotated Type Butt Fusion Welding Machine 2 Rings, 63-200mm Manual Push Type Butt Fusion Welding Machine, Geomembrane Welding Machine BGT-800 Series, Geomembrane Welding Machine BGT-900 Series, HDPE Butt Fusion Injection Flange Adapter(Stub End with Back Ring), HDPE Electrofusion Stub End(Flange Adaptor), Polypropylene Compression 90 Degree Elbow, HDPE Flange Adaptor/Stub End SDR7.4 and SDR9, Fabricated HDPE Reducing Cross Pipe Fitting, HDPE Fabricated Reducing Tee with concentric or eccentric end, HDPE Pipes and Fittings for Fire Fighting, HDPE Hot Wedge Welding Machine BGT-GM Serie, Geomembrane Hot Air Welding Machine BGT-700, Dual Heating Extrusion Welder Series BGT-600A/B/C, Dual Heating Extrusion Welder Series BGT-610A/B/C, Single Heating Extrusion Welder BGT-600E/600F/610E, Plastic Granules Extrusion Welding Machine BGT-620, High Density Polyethylene Trenchless Pipes For Horizontal Directional Drilling, Bingo pipeline(Customer brand is available), QA & QC system, Ensure traceability of each process. It was reissued in 2005 and 2011, and previously reinstated in 2020. Day Activities . He can be reached at lslavin@ieee.org. As the name denotes, trenchless technology requires few or no trenches to be dug for the maintenance work to be done and can be defined as, A family of methods, materials, and equipment capable of being used for the installation of new or replacement or the rehabilitation of existing underground infrastructure.. Unnecessarily large curvatures (sharp bends) also contribute to bending stresses in the HDPE pipe, but generally are not significant for such a flexible product. The MGS, even without the use of the wire grid, has been accurate to over 2km with an accuracy of 2% at depth. Smaller diameter PE100 pipe can be pulled in directly from a coil trailer via a straightener re-rounder. sufficient tensile strength to meet the required tensile forces, based 0000029587 00000 n 0000020409 00000 n Pipe Design and Selection Considerations (Section 8). See also Excavations, pit sizes, Space and Access. Directional boring can be utilized with various pipe materials such as PVC, polyethylene, polypropylene, ductile iron, and steel provided that the pipe's properties (wall thickness and material strength) enable it to be both installed and operated (if applicable) under acceptable stress limits. 0000019257 00000 n The theoretical basis of the formulae for estimating the required pulling force is provided below.

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