Download or read book Establishing a Design Procedure for Buried Steel reinforced High density Polyethylene Pipes written by Jie Han and published by . This book was released on 2015 with total page 210 pages. Available in PDF, EPUB and Kindle. Book excerpt: Two field tests were conducted to investigate the field performance of steel-reinforced high-density polyethylene (SRHDPE) pipes during installation and under traffic loading. One test site was located on E 1000 road in Lawrence, KS, which is close to Clinton Lake. Three SRHDPE pipes with a diameter of 3 ft and a length of 24 ft were buried in a 6 ft wide trench with 2 ft thick soil cover. This test site had two test sections: one section was filled with Aggregate Base Class 3 aggregate (AB3) and the second section was filled with crushed stone. The second field study was conducted at a Kansas Department of Transportation (KDOT) storage yard in Kansas City, KS. Four 6 ft long SRHDPE pipes with a diameter of 2 ft were connected and buried in a trench with a dimension of 4.6 ft wide × 27.5 ft long × 4.2 ft deep. Two types of backfill material were also used in the trench, namely, AB3 aggregate and crushed stone. Earth pressures, pipe deflections, and pipe strains on plastic valley, plastic cover, and steel ribs were monitored during pipe installation and under static loading on both test sites. The test results from the pipe installation and static loading showed that (1) the vertical arching factor (VAF) on the top of the pipe was approximately 1.1 and the lateral earth pressure coefficient was approximately 0.65; (2) the peaking deflection was observed in both field tests in a range of 0.25 to 1.80% (the peaking deflection in the AB3 section was greater than that in the crushed stone section); (3) the maximum strain of the pipe occurred on the plastic valley in the longitudinal direction at the pipe crown, which was in a range of 0.4-0.6% and much lower than the strain limit of 5% suggested by the American Association of State Highway and Transportation Officials (AASHTO, 2012); and (4) the Giroud and Han (2004) method and the AASHTO (2012) method could reasonably estimate the earth pressure on the pipe under static loading, while the Iowa Formula could estimate the pipe deflection during installation and caused by static loading. The earth pressures, the pipe deflections, and the strains of the pipes in the Lawrence site were monitored for 680 days and all increased with time. Two empirical correlations were proposed to calculate the VAF and the pipe stiffness factor at a given time. The AASHTO (2012) design methods for metal pipes and high-density polyethylene (HDPE) pipes were modified for SRHDPE pipes based on the laboratory and field test results. A design procedure for SRHDPE pipes is proposed and illustrated by a design example.
Download or read book Establishing a Design Procedure for Buried Steel reinforced High Density Polyethylene SRHDPE Pipes written by and published by . This book was released on 2013 with total page 187 pages. Available in PDF, EPUB and Kindle. Book excerpt: Metal and plastic pipes have been used extensively as storm sewers and buried drainage structures in transportation projects. Metal pipes have high strength and stiffness but are susceptible to corrosion from wastewaters containing acid, and from aggressive soils. Plastic pipes are resistant to corrosion, erosion, and biological attack but have certain disadvantages including lower long-term strength and stiffness (dimensional reliability), buckling, and tearing of pipe wall. To address the disadvantages of metal and plastic pipes, a new product, steel-reinforced high-density polyethylene (SRHDPE) pipe, has been developed and introduced to the market, which has high-strength steel reinforcing ribs wound helically and covered by corrosion-resistant high density polyethylene (HDPE) resin inside and outside. The steel reinforcement adds ring stiffness to the pipe to maintain the cross-section shape during installation and to support overburden stresses and traffic loading. The HDPE resin protects the steel against corrosion and provides a smooth inner wall. The combination of steel and plastic materials results in a strong and durable material with a smooth inner wall. Different methods are available for the design of metal and plastic pipes. The American Water Works Association (AWWA) Manual M11 (2004) provided the design procedure for metal pipes and the 2007 AASHTO LRFD Bridge Design Specifications had separate design procedures for metal and plastic pipes. However, it is not clear whether any of these procedures for metal and plastic pipes can be used to design an SRHDPE pipe. Moreover, no approved installation or design specification is available specifically for the SRHDPE pipes. To establish a design procedure for SRHDPE pipes, various laboratory tests were conducted in this study to evaluate the stiffness, buckling resistance, and long-term creep behavior of SRHDPE pipes of 24 inches in diameter in air. In addition, large-scale plate loading tests were conducted on the pipe in a trench condition under 2 feet of shallow cover in a large geotechnical testing box (10 feet long x 6.6 feet wide x 6.6 feet high) to evaluate the performance of the SRHDPE pipe during installation and under static and cyclic loadings. In this study, Kansas River sand and crushed stone were used as bedding and backfill materials while AB-3 aggregate and Kansas River sand were used as base courses. Parallel plate loading test results show that the SRHDPE pipes met both the minimum pipe stiffness and buckling limit criteria according to the ASTM F2562/F2562M. The creep test conducted in air for a month demonstrated that the SRHDPE pipe deformed under a sustained load. The vertical arching factors (VAF) obtained from the measured earth pressures on the pipe crown during the installation of the pipes were compared with the analytical solutions in McGrath (1998) were used. The measured deflections of the pipes during the installation were compared with those predicted by the modified Iowa formula (1958). The measured earth pressures on the top of the pipe were compared with those estimated by Giroud and Han (2004) and the simplified distribution method in the 2007 AASHTO LRFD Bridge Design Specifications. The measured deflections of the pipes during loading were also compared with the modified Iowa formula (1958). The strains on steel and plastic were measured at various locations during both installation and loading. Based on the testing and analysis, it can be concluded that (1) the pipe wall-soil interface should be designed as a fully bonded interface to be conservative, (2) the Giroud and Han (2004) method and the simplified distribution method in the 2007 AASHTO LRFD Bridge Design Specifications reasonably predicted the pressures on the top of the SRHDPE pipes induced by static and cyclic loadings, (3) the modified Iowa formula (1958) reasonably predicted the deflections of the SRHDPE pipes during the installation and over-predicted the deflections during static and cyclic loadings, (4) the pipe wall area was enough to resist the wall thrust during installation and loadings, and (5) the highest measured strains recorded in steel and plastic during the installation and loadings in all the tests were within the permissible values.
Download or read book A Numerically Based Design Procedure for Buried High density Polyethylene Profile wall Pipes Buried in Fine grained In situ Soils written by Frederick Allen Brown and published by . This book was released on 1984 with total page 408 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Handbook of Polyethylene Pipe written by and published by Plastics Pipe Institute. This book was released on 2012-02 with total page 620 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book BURIED PIPE DESIGN 3 E written by A. P. Moser and published by McGraw Hill Professional. This book was released on 2008-07-15 with total page 623 pages. Available in PDF, EPUB and Kindle. Book excerpt: Unearth the Secrets of Designing and Building High-Quality Buried Piping Systems This brand-new edition of Buried Pipe Design helps you analyze the performance of a wide range of pipes, so you can determine the proper pipe and installation system for the job. Covering almost every type of rigid and flexible pipe, this unique reference identifies and describes factors involved in working with sewer and drain lines, water and gas mains, subway tunnels, culverts, oil and coals slurry lines, and telephone and electrical conduits. It provides clear examples for designing new municipal drinking and wastewater systems or rehabilitating existing ones that will last for many years on end. Comprehensive in scope and meticulously detailed in content, this is the pipe design book you'll want for a reference. This NEW edition includes: Important data on the newest pipe styles, including profile-wall polyethylene Updated references to ASTM, AWWA, and ASHTTO, standards Numerous examples of specific types of pipe system designs Safety precautions included in installation specifications Greater elaboration on trenchless technology methods New information on the cyclic life of PVC pressure pipe Buried Pipe Design covers the ins and outs of: External Loads Gravity Flow Pipe Design Pressure Pipe Design Rigid Pipe Products Flexible Steel Pipe Flexible Ductile Iron Pipe Flexible Plastic Pipe Pipe Installation Trenchless Technology
Download or read book New Design Procedure for Very Flexible Plastic Pipes written by Wesley Ethiyajeevan Saleira and published by . This book was released on 1988 with total page 392 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Buried Pipe Design 2nd Edition written by A. P. Moser and published by McGraw Hill Professional. This book was released on 2001-02-13 with total page 632 pages. Available in PDF, EPUB and Kindle. Book excerpt: This one-of-a kind resource touches on everything engineers need to know to work with and design buried piping systems. Discusses all aspects of pipe design, from basic design principles to matters relating to soil. New to this edition: coverage of materials, such as profile-wall polyurethane; new standards from ASTM, AWWA, ASHTTO, and TRB; a new safety section; and more design examples.
Download or read book Analysis and Design of Buried High Density Polyethylene Gravity Flow Pipe written by Ian D. Moore and published by London, [Ont.] : Geotechnical Research Centre, University of Western Ontario. This book was released on 1994 with total page 90 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Experimental Investigation of the Behavior of the Steel Reinforced High Density Polyethylene and Corrugated Metal Pipe written by Safa Sadat Masajedian and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Steel reinforced high density polyethylene pipes are gaining popularity these days because of their good performance and advantages of them in comparison to the other pipe materials. By inverting the steel ribs vertically in to the HDPE materials, strength of steel and flexibility and light weight of HDPE materials have been combined. However due the limited study in this area, the failure modes and design parameters are not classified. This study investigates the behavior and failure modes of SR-HDPE pipes under the simulated soil load and compares the results with the data obtained from the test on corrugated metal pipe under the identical test scenario. Full-scale experimental tests were conducted with soil boxes in order to determine if the steel ribs in SR-HDPE act continuously throughout the pipe structure. Local and global deformations of the pipe were monitored with displacement transducers and strain gauges, respectively. Strain gauges were placed at two sections of the pipe. Each section contained six strain gauges at the crown, springline, and invert. Displacement transducers were installed in two sections along the pipe (middle and 12 in.(31 cm) from the end). Each section was capable of monitoring the vertical deflection and the horizontal deflection was measured at mid section. The load was applied through a hydraulic cylinder, and a rigid concrete slab. The data from these sensors were recorded and reported to identify the response of the pipes with regard to strength and serviceability. Three different pipe sizes (24 in. (61 cm), 36 in. (91 cm), and 48 in. (122 cm)) were tested in this situation and three different concrete slabs were cast whose dimensions were fixed by the pipe length which was 4 ft. (122 cm) and pipe and its width varied based on internal diameter. The results showed that the CMP pipe has higher stiffness and load carrying capacity. Also CMP exhibited more ductility before the failure. The governing failure mode of the SRHDPE pipe tested was lateral buckling of the ribs along the horizontal axis of the pipe at crown and springlines. This was due to the premature buckling of the HDPE material supporting the steel ribs, thus, causing discontinuous steel action. This study shows that the behavior of the SR-HDPE is different than the CMP pipe. By inspecting the pipe after reloading and removing from the soil box, three failure lines (crease) for 24 in. (61 cm) SR-HDPE and four failure lines for 36 in. (91 cm), and 48 in. (122 cm) SR-HDPE which is explained by the higher hoop capacity of the 24 in. (61 cm) SR-HDPE pipe in comparison with other pipe sizes. However CMP pipes exhibited a continuous hoop type buckling and smooth plastic hinge.
Download or read book A Water Resources Technical Publication written by and published by . This book was released on 1975 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book HDPE Pipe written by Yick Grace Hsuan and published by Transportation Research Board. This book was released on 1999 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Buried Pipe Design written by Alma P. Moser and published by McGraw-Hill Companies. This book was released on 1990 with total page 252 pages. Available in PDF, EPUB and Kindle. Book excerpt: With many new features and updates, the second edition of the definitive work on buried pipe systems saves engineers time as the only available one-stop source for complete design and implementation guidance. From soil parameters to disposal and beyond, Moser's Buried Pipe Design is the only guide you need for comprehensive underground piping answers. It's the one sourcebook that both seasoned experts and novices turn to, for projects large and small. New to this edition *Reference to new standards from ASTM, AWWA. *New safety section. *New section on trenchless technology *Revised section on cyclic stress on PVC. *Data on the latest products, such as profile-wall polyethylene. *Numerous design examples added. Civil Environmental Water Municipal
Download or read book Investigation of High Density Polyethylene Pipe for Highway Applications written by and published by . This book was released on 1996 with total page 198 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the past, culvert pipes were made only of corrugated metal or reinforced concrete. In recent years, several manufacturers have made pipe of lightweight plastic - for example, high density polyethylene (HDPE) - which is considered to be viscoelastic in its structural behavior. It appears that there are several highway applications in which HDPE pipe would be an economically favorable alternative. However, the newness of plastic pipe requires the evaluation of its performance, integrity, and durability; A review of the Iowa Department of Transportation Standard Specifications for Highway and Bridge Construction reveals limited information on the use of plastic pipe for state projects. The objective of this study was to review and evaluate the use of HDPE pipe in roadway applications. Structural performance, soil-structure interaction, and the sensitivity of the pipe to installation was investigated. Comprehensive computerized literature searches were undertaken to define the state-of-the-art in the design and use of HDPE pipe in highway applications. A questionnaire was developed and sent to all Iowa county engineers to learn of their use of HDPE pipe. Responses indicated that the majority of county engineers were aware of the product but were not confident in its ability to perform as well as conventional materials. Counties currently using HDPE pipe in general only use it in driveway crossings. Originally, we intended to survey states as to their usage of HDPE pipe. However, a few weeks after initiation of the project, it was learned that the Tennessee DOT was in the process of making a similar survey of state DOT's. Results of the Tennessee survey of states have been obtained and included in this report. In an effort to develop more confidence in the pipe's performance parameters, this research included laboratory tests to determine the ring and flexural stiffness of HDPE pipe provided by various manufacturers. Parallel plate tests verified all specimens were in compliance with ASTM specifications. Flexural testing revealed that pipe profile had a significant effect on the longitudinal stiffness and that strength could not be accurately predicted on the basis of diameter alone. Realizing that the soil around a buried HDPE pipe contributes to the pipe stiffness, the research team completed a limited series of tests on buried 3 ft-diameter HDPE pipe. The tests simulated the effects of truck wheel loads above the pipe and were conducted with two feet of cover. These tests indicated that the type and quality of backfill significantly influences the performance of HDPE pipe. The tests revealed that the soil envelope does significantly affect the performance of HDPE pipe in situ, and after a certain point, no additional strength is realized by increasing the quality of the backfill.
Download or read book Annual Report of Progress on Engineering Research written by United States. Bureau of Reclamation and published by . This book was released on 1970 with total page 540 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Reclamation Research in the Seventies written by United States. Bureau of Reclamation and published by . This book was released on 1977 with total page 114 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Design of Industrial Structures written by Ashoke Kumar Dasgupta and published by CRC Press. This book was released on 2021-12-13 with total page 452 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book bridges the gap between academic and professional field pertaining to design of industrial reinforced cement concrete and steel structures. It covers pertinent topics on contracts, specifications, soil survey and design criteria to clarify objectives of the design work. Further, it gives out guiding procedures on how to proceed with the construction in phases at site, negotiating changes in equipment and design development. Safety, quality and economic requirements of design are explained with reference to global codes. Latest methods of analysis, design and use of advanced construction materials have been illustrated along with a brief on analysis software and drafting tool.
Download or read book Buried Plastic Pipe Technology written by George S. Buczala and published by ASTM International. This book was released on 1990 with total page 404 pages. Available in PDF, EPUB and Kindle. Book excerpt:
