The backfill load is normally well distributed over the top of the pipe. Chapter 7 underground installation of pe piping 267 figure 1 pipe trench note. Check each pipe length for cracks or imperfections. Trenching works and mains installation aeolia drive devonshire specification c any trench works closed before the pipe work has been hydrotested shall be at a minimum, uncovered at the joints to allow the employers representative to inspect the joints during the test. While supporting lengths of pipe evenly, alternate bells for each row of pipe. Csa international 178 rexdale boulevard toronto, on m9w 1r3. The pipe shall be cut into lengths for testing according to the appropriate specification for the size of pipe and the tests to be performed. Proper engineering design of a system will take into consideration the type and effectiveness of the techniques used to join the piping components and appurtenances, as well as the durability of the resulting. However, proper pipe support must be constructed on the bottom of the pipe to distribute the load. Inspection checklist pipeline inspection checklist. Proper engineering design of a fusionssystem will take into consideration the type and effectiveness of the techniques used to join the pipe and appurtenances, as well as thosethe durability of the resulting joints. Polyethylene piping systems field manual for municipal water. Suggested loose storage stacking heights in rows for hdpe pipe.
Advanced drainage systems, inc ads and hancor, inc provides innovative drainage and water conservation solutions using corrugated high density polyethylene hdpe. Pipe shall be produced to constant internal diameters. Examples 12, 14, 16 2 metal pipe corrugation dimensions. Pipe borrow type c for pipe trenches below the roadway or shoulders, 95% or more of maximum density borrow type c for pipe trenches other than below roadway or shoulders, to a height 12 above top of pipe and remainder to depth shall be backfilled with existing material. Physical property data for hdpe polyethylene pipe table 2 for data, sizes, or classes not re. Short lengths of3mminimum up to a maximum of 10 percent ofthetotal supply may be permitted. A brittleness test shall be conducted in accordance with the requirements specified in aashto m 252 or m294. The principle of butt fusion is to heat the pipe ends to a designated temperature 200220 c under. Can be used with a variety of pipe materials pvc, hdpe, steel can be used for a variety of types of pipe installation water, sewer, storm. Installations should be performed only by personnel that have been trained, qualified and certified for electrofusion welding. These sheets also indicate the pipe material abbreviations which are used throughout construction in plans and the proposals figure 11. Minimum trench width will depend on site conditions and embedment materials. Electrofusion welding method statement water management solutions. Verifying that the correct pipe has been delivered for the applications on your project.
Transportationtransportation ofof liquidsliquids andand gasesgases fromfrom oneone placeplace toto anotheranother placeplaceplaceplace toto anotheranother placeplace. It is a method of jointing pipe ends by way of heating and cooling under pressure, resulting in pipe joints as strong as the pipe itself. Generic butt fsion joining procedure for field joining of. The ballast weight are clamped along with the pipeline as designed space. Pipeline laying proceedure free download as pdf file. Hdpe pipe is generally used underground and with a high rate of flow of whatever is being transported. Spreader bars may be used when multiple support locations are required. Proper soil support under the bottom of the pipe is also necessary to maintain grade.
As far as the transferring of heat goes, the rate of energy transfer is a lot low in the hdpe conduits and pipes. Install the pipe according to approved shop drawing. Gi pipes are quite common for smaller size drinking water mains. Hdpe pipe installation video hdpe pipe backfill procedure. When pipes such as polyethylene, pvc and metal pipes. Hdpe pipe and fittings shall have a smooth interior and corrugated exterior. Underground installation of pe piping engineered pipe group. The pipe shall have a full circular cross section with annular corrugations. The line and grade of the trench according to the cut sheet. Butt fusion is the most important and widely used method of connection for hdpe pipes larger than 110 mm.
Installation and design of large diameter of hdpe pipeline. Plastics pipe institute handbook of polyethylene pipe. The joint conditions applied during the pe 100 pipe laying have an impact on the service life of the pipes. Lifting large diameter pipe stringing or laying out the pipe along the proposed trench line is a commonly used practice which allows the pipe to be picked up and installed in one operation. Can be used with a variety of pipe materials pvc, hdpe, steel can be used for a. Prior to unloading of pipes from trailers, all items shall be inspected for any visual transportation damages. Regarding guidance for laying and jointing of polyethylene pipe, including storage and handling, a reference may be made to is 7634 part 11. Generic butt fusion joining procedure for field joining of polyethylene pipe. From the lay down area to the trench site, the pipes shall be transported through trailers. Installation procedures vary for mechanical couplings based upon the. All draw off points have to be plugged with stopper and shut off main valve to section of pipe to be tested. Polyethylene joining procedures butt fusion joining procedure for field joining of polyethylene pipe.
Observe the pipe while being laid to be sure the pipe has full bearing and is fully into the pipe bedding and is centered in the trench. Since its discovery in 1933, polyethylene pe has grown to become one of the worlds. Aquaflow hdpe pressure pipe 2 applications 2 quality 2 characteristics of hdpe pipe 3 specifications 4 product range 4 pipe dimensions 5 temperaturepressure derating 6 design guidelines 7 codes of practice 7 flowfriction loss chart 8 chemical resistance tables 9 sangio pipe is a manufacturer and supplier of high and low density polyethylene and. Introduction this method statement covers the procedure involved in handling and installation of underground grpfrp piping in trench. Kuzeyboru hdpe pipes for the use of pipe laying of soil conditions of soiling and chemical structure of the soil. The manitoba water services board section 022180 standard construction specifications pipe excavation, bedding 201 september 3 and backfill page 2 of 11 1. Start filling in water into pipes by using hand pump. Under each pipe type, the pipe materials that are required areindicated. Cod ducts are used to provide a single and continuous duct laying operation from one point to another between manhole to manhole, without any cut. Hdpe pipe is extremely durable, and relatively expensive compared to other pipe, such as pvc. Materials that have been prequalified to be joined by this fusion procedure are within the nominal melt index range of 0. Procedure of pipe laying santa maria water district.
Kuzeyboru hdpe pipes have a minimum lifetime of 50 years and are valid at a. When groundwater levels are expected to reach above the pipe, the secondary initial backfill should be a continuation of the primary initial backfill in order to provide optimum pipe support. The following installation manual was written to give general introduction of. A comparison of common pipe installation methods including. Connect pressure gauge to the lower section of pipeline. Electrofusion installation manual it is important to read and understand all instructions before performing an electrofusion installation. Installation method statement of hdpe piping method. Pipeline laying proceedure welding pipe fluid conveyance. Standard construction specifications and drawings for.
Pipe excavation, bedding and backfill manitoba water services. Fabrication erection and installation procedure for piping. The aims of the paper are to present the design procedure of. Hdpe pipe hdpe 100 pipes and polyethylene piping systems. To prevent damage to the bell or spigot when moving pipe sections, do not drag or strike pipe ends against anything. When pipe is listed by type, the contractor may use any pipe material that meets the requirements of that type. The following procedure to be adopted on site for pressure testing. Method statement for installation of hdpe pipes written by. The floatandsink installation method was adopted to laying the pipeline with 2500mm diameter into the seabed in the project. An integral part of any pipe system is the method used to join the system components.
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