Kimberly H. Paggioli, P.E., Vice President, Marketing and Quality Control Richard C. Turkopp, P.E., Vice President, Engineering
|
|
- Dana Warner
- 8 years ago
- Views:
Transcription
1 Sliplining and Microtunneling of Large Diameter Pipelines Kimberly H. Paggioli, P.E., Vice President, Marketing and Quality Control Richard C. Turkopp, P.E., Vice President, Engineering HOBAS Pipe USA, 1413 Richey Rd., Houston, TX (281) ; (281) (F); Introduction Deteriorating underground pipeline infrastructure is emerging as one of America s next crises. Aging pipes have already begun failing and will require replacement and significant upgrades just to maintain existing service levels. Expanding urban development means that additional pipeline capacity will be required. Major pipeline failures have been well documented in the media: natural gas line ruptures with fatalities in Rancho Cordova, CA in 2008; Plum Borough, Pennsylvania in 2008; Bergenfield, NJ in 2005; Carlsbad, NM in 2000, and a liquid propane line in Carmichael, MS in 2007 to mention just a few. Water and sewer line failures have affected numerous communities throughout the U.S. No area is immune. Major sewer and wastewater line failures have recently been reported in Culver City, CA and Thomasville, NC in 2010, and dozens of others in between over just the past few years. The EPA estimates that 1.2 million miles of underground wastewater pipelines are currently in place throughout the United States. The Freedonia Group and Water News Update reported in June 2011 that, "U.S. demand for water and wastewater pipe is expected to increase 6 percent annually to $19 billion in 2014, equivalent to approximately five billion feet. Stimulants include a rebounding residential building 2011 AREMA
2 construction sector, the growing obsolescence of sewer and drainage systems, and needs to upgrade municipal water systems. [Water News Update is a publication of the Clean Water Council, a coalition of 37 national organizations chaired by NUCA.] When the original pipelines were installed during the early days of urbanization, sparse development in most areas posed little challenge for contractors open cut trenching to install water and wastewater lines. These pipelines are now often underneath other existing infrastructure, including highways, airports and rail lines. Repairing pipelines located below railroads and within railroad rights of way by open cut methods can be cost prohibitive as well as very disruptive to surface mobility and system operation. Storm and other drainage culverts are some of the most likely candidates for pipelines needing rehabilitation under rail lines due to many factors. There are so many of them, they are sometimes poorly tracked and infrequently inspected, they may have been in service for decades, and the potential for catastrophic failure may be great. Pipelines as an out of sight asset have long been neglected. Often the repair cost of a failed culvert, including down time to associated infrastructure is much more costly than a repair prior to failure. Funds necessary to upgrade the nations infrastructure have only recently begun to enter the market and in limited quantities and with questionable effects. Owners struggle to make the most of their infrastructure investments, and invest in products that offer the lowest life-cycle cost. Disruption to transportation modes, whether it be rail, vehicular or aircraft is costly. Better methods by which these aging utilities can be replaced and rehabilitated need to be utilized routinely. Two options, sliplining rehabilitation of existing lines, and microtunneling (direct jacking) of new pipelines have proven to be very effective means for pipeline maintenance (rehabilitation) and expansion under rail lines. These two techniques will be discussed in this paper. Rehabilitation by Sliplining 2011 AREMA
3 Sliplining is a renewal method of installing a new, factory-made, structurally designed pipe into the existing host pipe. Sliplining is semi-trenchless and requires only minimal excavation. Generally, access pits are required at liner pipe insertion locations, allowing the above ground work zone to be located as far away from the operational rail lines as the existing pipe allows. Typically, the new factory-made pipe is pushed into place, adding one segment at a time to the train with a system of hydraulic jacks. In some cases, the new pipe liner can be pulled into the host pipe. A major benefit of sliplining is that it can usually be done live while the existing rail line is working and the pipeline is also in operation. Bypass pumping or a diversion for the existing line or culvert is usually not necessary. Examination of Existing Pipe When considering sliplining, it is of vital importance to examine with some kind of survey the exact features of the existing host pipe. The engineer and/or installer must ascertain the diameter of the existing pipe as well as its bends or curves, and assess its condition. Often, it is not the tightness of fit but the offset joints, locations of undersized host pipes and directional changes that create the biggest challenges. In many cases, the existing line is not straight. It could be a monolithically poured curve, have angularly deflected pipe segments, a series of mitered fittings or deflected or mis-shapen pipes. Such surveys can be carried out with video cameras, closed-circuit television and more recently laser profiling methods. Choices of Pipe When evaluating a potential sliplining project, engineers must examine many considerations that will affect the outcome, from the nature and development of the area surrounding the pipe to be repaired to the different properties of various pipe materials. Concerns that affect pipe material choice are structural needs, corrosion considerations, hydraulics, and installation ease AREMA
4 Several different types of pipe materials have been used successfully in sliplining including PVC, HDPE (Solid Wall and Profile wall) and FRPM. For the most part, gasket sealed segmental products are pushed into place, while fused joint products are pulled into place. Material Diameter Joint System Insert PVC 54" Gasket sealed - segmented Push - in HDPE- SW 54" Fused ends - continuous Pull - in HDPE- PW 144" Gasket sealed - segmented Push - in FRPM 120" Gasket sealed - segmented Push - in Sizing A general rule of thumb for relatively straight sections is that the liner pipe OD should be five percent less than the host pipe s ID, with an absolute minimum of one-inch difference on radius between the liner OD and host ID (or a two-inch difference in diameter) AREMA
5 For example, a 26-inch nominal diameter pipe with a 28-inch outside diameter could generally be slip lined into a 30-inch host pipe. That difference between 28 and 30 inches is seven percent. The difference on radius should be at least one inch, or two inches in diameter. One of the tightest fits ever recorded for a sliplining project with fiberglass pipe was in Los Angeles, where a 30-inch nominal pipe with 32-inch OD was inserted into a 33-inch clay sewer. That only allowed a ½-inch radial clearance. To add to the complexity of the project, not only was the diameter tight, but the existing joint lengths were quite short, at only 4-foot in length. The fiberglass liner pipe, installed in 10-foot joints, could potentially bridge across three of the existing clay pipe joints simultaneously. Here, the importance of an accurate survey is realized. For assurance, experts recommend pulling a test section of liner pipe or mandrell as proof or fit or liner passage. The proof pipe should be the same length as the segments the engineer is planning to use. For existing non-straight host pipe sections, segmental sliplining often resembles running straight railroad cars (pipe segments) around a curve in the tracks (host pipe). This creates a series of segments and angles rather than a uniform curve. For that reason, it is important to be sure that the joints will seal once the liner has found its final resting position. Navigation of the curve during sliplining is only one aspect to be considered. The designer needs to determine if the curve is uniform in radius. Also, it is important to know the required angle at each joint location. Whatever the existing alignment is, the designer will need to make sure that the liner joint capability is within the limits imposed by the host pipe. For sliplining around true curves, it is often possible to install shorter segments of pipe in the curves so that the joints will deflect slightly and the seals are maintained. Generally, depending on the manufacturer, liners can make one to two-degree bends at each joint and still maintain integrity of the joints. The more accurate the survey of the existing pipe and conditions, the higher the success rate in sliplining AREMA
6 In Los Angeles, for example, on a project for Los Angeles County Sanitation District, the installation contractor pushed 17 pipe segments, each 2.5 feet long, at the beginning of a 3,500-foot run. The entire project included three such curves with a 45-foot radius. In this case, they could gain access to evaluate the curves, but they were not directly accessible for installation so push shafts were located at the end of the straight sections. Shorter segments, the 2.5-foot lengths, were installed first and pushed through the straight sections to end in the curve. The success of this complex installation was largely due to the knowledge of the host pipe size and orientation. In areas where angles are not navigable through pushing pipes and where pit locations are convenient, fiberglass fittings can be manufactured to fit the existing sewer. These custom pieces can be simple elbows or more complex fittings such as branch wyes, crosses and other non-standard configurations. Hydraulic Efficiency Flow capacity is affected by the relative sizes of pipes and their respective hydraulic characteristics. In many cases, especially for large diameter pipes, the capacity can be maintained or improved even with a reduction in diameter. The roughness of a pipe wall is expressed as an n value that is utilized in Manning s formula to predict flow. The Manning value of many plastic and fiberglass pipes is between and By contrast, the value for new concrete is somewhat rougher, at Old concrete can range from to or even worse, depending on the level of deterioration. Wall "t" Typ. Dia. Material vs. Dia. Reduction Flow Change FRPM 2% - 3% 10% > PVC 3% - 4% 12% > HDPE - SW 4% - 5% 14% = 2011 AREMA
7 HDPE - PW 6% - 8% 19% < One can calculate the reduction in diameter that is possible with the liner pipe in order to maintain flow. By manipulating Manning s formula as a function of flow, the designer can determine the ratio of the liner flow (Q1) to the host flow (Q2). If the ratio of the liner flow to the host flow is 90 percent, for example, the liner has resulted in a 10 percent reduction in flow. But if the ratio of Q1 over Q2 is greater than one, flow has improved. Q = (1.49/n) A R 2/3 S 1/2 Reducing Two Simultaneous Equations on the Same Slope Q 1 / Q 2 = (n 2 /n 1 ) * (D 1 /D 2 ) 8/3 Where Q1 is the liner and Q2 is the host. Depending on the existing pipe diameter and the liner pipe chosen, a step down in liner size is typically four to 12 inches less than the host pipe. This depends on the strength of the liner pipe, its thickness and the resulting OD and ID. A liner with a Manning s value of can be 13 percent smaller than the host with a Manning s of and maintain equal flow. The more efficient the cross-section of pipe, the greater is the potential for flow recovery or even increase capacity. Installation Questions Many factors affect the distances that are possible to push the liner pipe. Aside from the obvious alignment issues, the presence of flow in the line, host condition, and the distance to be relined are considerations. Displaced flow will lift up the liner, and the flow in the liner plus the pipe weight will press it downward. Buoyancy considerations include the flow depth in the host, the liner pipe weight and the ability to control the depth in the liner pipe by means such as a nose cone or weir on the push ring that 2011 AREMA
8 affects the flow depth in the liner during insertion. The more neutrally buoyant is the liner, the less friction encountered. The distance that the liner may be pushed is also a function of equipment. Relining short sections, for example culvert spans of 100 feet in length, would generally require simple equipment, vs. a large diameter half mile long storm sewer outfall. Hydraulic jacking systems are probably the most commonly used equipment for lengthy sliplining projects. But simple winch systems and even ordinary construction equipment can be used as well, usually for shorter runs. The force that it takes to install the liner is dependent upon the friction. The maximum load that may be placed on the liner pipe and its weight are specifications that are available from the pipe manufacturer. With this information, and an appropriate factor of safety (3.0 is common), the safe push distance can be calculated. Friction factors are installation-specific but are commonly in the range. For example, with 164 tons of force, a contractor can jack 48-inch pipe 5,800 feet with a friction factor of 0.4 in the host. That pipe weighs 141 pounds per foot. In one project for the Los Angeles County Sanitation District, 51-inch and 57-inch fiberglass liner pipes were sliplined into 57-inch and 63-inch reinforced concrete pipes, respectively. Maximum pushing force was about 100 tons on all drives, including curves, angles and offsets. The average friction factor was 0.3 and the longest single push in one direction was 5,600 feet. In short, sliplining can provide leak-free service, eliminate corrosion deterioration and restore structural integrity to old pipes. When properly designed and evaluated, a liner can be installed safely with a minimal amount of downsizing, and capacity can be maintained or even improved. Additionally, the potential for pushing thousands of feet means that surface disruption is minimized, too AREMA
9 Alternatively, in sewers where bypass pumping is possible and the sewer alignment prevents sliplining in the traditional way, segments of pipes and fittings can be carried into the sewer and installed much like traditional tunnel carrier pipes. Microtunneling Installation of new pipes may also be accomplished via a trenchless method such as direct jacking, also known as microtunneling. Microtunneling a method of installing a new, factory made, structurally designed pipe in a trenchless technique by pushing the pipe through the soil. Choices of Pipe Selection of a proper pipe is critical to the success of any installation, but even more so for jacking. Good jacking pipes have many common characteristics and the most successful possess most or all of the key attributes. Jacking pipes must possess high axial load capacity to withstand the frequently very large thrust forces applied during installation. Of near equal importance are small, consistent dimensional tolerances related to OD, roundness and straightness control in order to minimize increasing the jacking thrust loads unnecessarily. Of further benefit is a resilient pipe wall material that aids in distributing uneven thrust loads around the pipe circumference. All jacking pipes must have a reliable, leak-free joining system (preferably gasket-sealed for quick assembly) to resist annulus lubrication injection, potentially high ground water pressures, contact grouting (when used) and system service conditions. Finally, since some pipe damage during jacking is inevitable, a pipe that is permanently repairable in-place is at least an economic windfall, if not an absolute necessity for project success. Jacking Pipe Characteristics 2011 AREMA
10 Several different types of materials are used including RCP, Polymer Concrete Pipe and Centrifugally Cast Fiberglass. Generally accepted criteria for quality jacking pipes, includes a circular shape with a flush surface (including the joint area), strength sufficient to withstand both installation and in-place loading, durability (abrasion and corrosion resistance) and water-tight joints. In addition to the other external factors that affect jacking loads, which will be discussed later, dimensional consistency of the jacking pipes can affect jacking performance. The table below provides general ranges of products as well as desirable limits. Tolerances outside the limits may require a higher jacking load safety factor. From the ASCE Standard, Construction Guidelines for Microtunneling The dimensional tolerances for fiberglass jacking pipe can achieve: - OD... +/- 0.05% of diameter - Straightness... maximum 0.06 deviation / 10 length 2011 AREMA
11 - Roundness... +/- 0.10% of diameter - End squareness... +/ Length... +/ s Meaning of Tonnage Rating The stated tonnage rating (allowable jacking thrust) is the ultimate axial load capacity divided by the chosen safety factor. The load capacity is determined in a compressive test by applying a uniform, square load to the entire pipe end. The test is designed to determine the true material strength including any influence from the joint ends which may have a reduced cross-section and contain groove(s) for the sealing gaskets. The tonnage rating is NOT a guarantee of field performance due to the non-uniform loading and / or reduced end-to-end contact that may be experienced during actual jacking operations. Factors Affecting Actual Jacking Loads: The combined effects of many factors determine the magnitude of the actual jacking loads experienced during a drive. Generally, the factors may be divided into two groups: (1) Conditions and Operations and (2) Pipe Characteristics. Conditions and Operations Factors - Drive distance - Soil type(s) - Annulus overcut - Annulus lubrication - Ground water - Alignment and grade control - Machine advance rate In general, a longer drive results in higher jacking loads; collapsing gripping native soils (typically granular) generate higher loads; smaller overcut (annulus) produces higher 2011 AREMA
12 loads; less annulus lubrication creates higher loads; a faster machine advance rate causes higher loads, and quicker, more frequent direction (grade and / or alignment) changes means higher loads. Pipe Characteristics Factors - OD control - Roundness control - Straightness control - End squareness control - Weight - Exterior surface smoothness Generally, larger dimensional tolerances create higher jacking loads; greater weight produces higher loads, and a rougher exterior surface results in higher loads. Summary By taking a proactive role in pipeline management, which includes sewers and culverts, the investment in infrastructure can be better persevered and will lead to a safer more cost effective operation. Both sliplining rehabilitation of existing lines, and microtunneling (direct jacking) of new pipelines are cost effective, performance proven, semi-trenchless methods of installing new factory-made pipeline below railroads and within railroad rights-of-way AREMA
13 Kimberly Paggioli, P.E. VP, Quality Control & Marketing HOBAS Pipe USA
14 Overview Sliplining Basic Procedure & Design Considerations for Fiberglass Pipe Overview Jacking / Microtunneling Basic Procedure & Design Considerations for Fiberglass Pipe Summary / Q & A 2
15 Materials Glass fibers, thermosetting resin and aggregates Diameters 12-inch to over 120-inch diameter
16 Flexible Pipe AWWA Design Basis M45 ASTM D3262 Covers fiberglass gravity applications Originally Approved in 1973
17 Semi Trenchless Method limited excavation 5
18 New, Factory Made Pipe Within an Old Pipe 6
19 7
20 Existing Pipe Preparation Verify Actual Host Pipe Diameter Assess Existing Pipe Condition (video) Excavate Access Shaft(s) Open Host Line Remove Debris & Obstructions (clean) Perform Point Repairs (if needed) Mandrel Proof 8
21 Lining Process Insert Liner Pipe Confirm Successful Insertion (video) Reinstate Any Laterals Grout Annulus Final Acceptance (video) 9
22 Liner Corrosion Protection Leak Prevention Hydraulics Structural Reinforcement Installation 10
23 Segmented Systems (gasket sealed) Live Insertion Small Access Shafts Fast Assembly Quick Insertion 11
24 12
25 26 CCFRPM (28 OD) into 30 (7%) Diameter Differences Generally a 5% Decrease in Diameter is Successful Minimum of About 1 on R 13
26 NC DOT Existing pipe Leaking joints Corrosion from saltwater exposure 30-inch diameter sliplined with 28- inch fiberglass pipe 14
27 Determining if the Pipes Will Pass Through PI s, Curves, Offsets Accurate Survey Pipe Dimensions (Raised or Flush Bell) Simply Geometry Mandrel Proof Determining if Pipes Will Seal if They Pass Worst Case if Liner Pipe Joints Occur at Host PI s 15
28 Pipes & Fittings Carried In 16
29 McAllen, TX Deteriorating line Off set joints PI s Leaks 72-inch concrete pipe sliplined with 63-inch fiberglass pipe 17
30 18
31 Function of Diameters & Pipe Hydraulic Characteristics Even With a Diameter Reduction, Typically Improved Flow Capacity 19
32 Q = (1.49/n) A R 2/3 S 1/2 Reducing Two Simultaneous Equations on the Same Slope Q 1 / Q 2 = (n 2 /n 1 ) * (D 1 /D 2 ) 8/3 20
33 4 12 Inch Typical Step Down Depends On Wall t and Clearance Liner Host Manning's n Diameter for equal flow % Reduction vs % Reduction vs % Reduction vs
34 22
35 23
36 Buoyancy Flow Depth Control & Effects Equipment Friction Pipe Weight 24
37 Primary casing with liner Twin storm sewer lines Newark, NJ 42-inch fiberglass liner, 48-inch concrete and 60-inch casing
38 Trenchless Method of New Pipe Installation 26
39 One Pass Installation of New Pipe Or Two Pass System 27
40 Geotechnical Investigation Soil Types Groundwater Location Method Determination Auger Microtunnel Slurry Microtunnel Traditional (Muck Car) 28
41 Shaft Requirements Locations & Quantity Type & Dimensions
42 Loads Distances Pit Locations Reliability of Method Predicted vs. Actual Inspection After Installation Pipe and Joints Ground Monitoring 30
43 Ground Conditions: Types of Soil, uniform / consistent Size, Type and Dimensions of Material Installed
44 Distance Jacked Construction: Steering, Overcut & Lubrication
45 Pipe Capacity Based on Materials Compressive Strength w/ FS Based on Straight Uniform Loads
46 Predicted Load Decreased by Intermediate Jacks 34
47 Segmental Sliplining Restore Structural Integrity Leak Free Limited Surface Disruption Limited Environmental Impact Jacking & Microtunneling High Strength Composite with Low Jacking Loads Non Metallic Construction Resilient & Reliable Material
48 36
San Antonio Water System Standard Specifications for Construction ITEM NO. 1100 SLIP-LINING SANITARY SEWERS
ITEM NO. 1100 SLIP-LINING SANITARY SEWERS 1100.1 DESCRIPTION: This item shall consist of slip-lining sanitary sewer pipe, which is accomplished by pulling or pushing liner pipe into existing sewers by
More informationFlowtite Jacking Pipe
U.S. COMPOSITE PIPE SOUTH, LLC. MEMBER OF KTI PIPE GROUP OF COMPANIES Flowtite Jacking Pipe 18585 Samuels Rd. Zachary, La. 70791 PH. 225-658-6166 Fax 225-658-0947 www.flowtitepipe.com Flowtite GRP Pipe
More informationENGINEERED SOLUTIONS. A2 Liner Pipe for Trenchless Technology
ENGINEERED SOLUTIONS A2 Liner Pipe for Trenchless Technology A2 Liner Pipe Restores Deteriorated Sewers Cost-Effective Rehabilitation The increasing rate of sanitary and storm sewer deterioration requires
More informationSPECIFICATIONS FOR SEWER PIPE AND LINING INSERTION - TRENCHLESS; GENERAL GUIDELINES (As Provided by NASSCO)
SPECIFICATIONS FOR SEWER PIPE AND LINING INSERTION - TRENCHLESS; GENERAL GUIDELINES (As Provided by NASSCO) 1 Intent: The intent of trenchless sewer pipe Insertion is to rehabilitate the existing sewer
More informationRepair or Replacement - Band-Aids vs. Surgery
Repair or Replacement - Band-Aids vs. Surgery Using RCP for the Replacement of Failed or Undersized Culverts www.concrete-pipe.org Introduction and Background Our Nation s infrastructure owners are facing
More informationTECHNICAL NOTE Culvert Sliplining and Lining of Casings with HPPipe
TECHNICAL NOTE Culvert Sliplining and Lining of Casings with HPPipe TN 5.14 February 2010 Introduction It may be at times necessary, in an aging infrastructure, to rehabilitate drainage and sanitary lines
More informationPlatte River Interceptor Slipline Rehabilitation
Platte River Interceptor Slipline Rehabilitation Owner: Metro Wastewater Reclamation District Contractor: American West, Denver CO Slipline Pipe Manufacturer : Hobas Pipe USA Presented by: Tom Furie, Area
More informationWastewater Capital Projects Management Standard Construction Specification
CITY AND COUNTY OF DENVER ENGINEERING DIVISION Wastewater Capital Projects Management Standard Construction Specification 10.1 Precast Concrete Pipe 10.1.1 General This section covers material requirements,
More informationSession: HDPE Pipe Test Rafael Ortega, Vice President, Lockwood, Andrews & Newnam
Session: HDPE Pipe Test Rafael Ortega, Vice President, Lockwood, Andrews & Newnam Education Master of Business Administration University of Houston, 1985 Bachelor of Science, Civil Engineering University
More informationStorm Sewer Trenchless Upgrade Alternatives and Recommendations
Storm Sewer Trenchless Upgrade Alternatives and Recommendations Background Approximately 1,930 feet of the 40-inch and 42-inch CMP storm sewer pipe from manhole M22 to manhole M12 will be evaluated for
More informationSpecification for Pipe Bursting Gravity Sewer Mains with HDPE Pipe
Specification for Pipe Bursting Gravity Sewer Mains with HDPE Pipe 1. GENERAL The following supplemental sewer main specifications are intended to address the installation of high-density polyethylene
More informationSPR PE Steel Reinforced Liner
ENGINEERED SOLUTIONS SPR PE Steel Reinforced Liner Reline Done Right Contech is your single source for rehabilitation of sanitary & storm sewers, culverts and bridges. Contech Engineered Solutions has
More informationMainline Pipe Rehabilitation Using Cured-in-Place Pipe (CIPP) & Folded Pipe Technology
2007 Pumper & Cleaner Environmental Expo International Wednesday February 7, 2007 Mainline Pipe Rehabilitation Using Cured-in-Place Pipe (CIPP) & Folded Pipe Technology What is Cured-In-Place Pipe (CIPP)
More informationDIVISION 4300 STORM DRAINAGE
DIVISION 4300 STORM DRAINAGE SECTION 4305 STORM SEWER PART 1 - GENERAL 1.01 SCOPE This section covers the construction of storm sewers for the collection and transport of stormwater runoff. 1.02 REFERENCES
More informationNative InDesign 2890 SaniTite Brochure 1/8" 100 300 CMYK April 17, 07
Sanitary Sewer Pipe Tough pipe for a tough environment SaniTite Sanitary Sewer Pipe delivers the features that engineers, contractors and municipalities demand durability, performance, handling, toughness
More information1.3.2 Method of construction and restoration of existing water service connections. This shall include:
1.0 GENERAL 1.1 DESCRIPTION: This specification shall cover the rehabilitation of existing water lines using the GRUNDOCRACK PIPE BURSTING SYSTEM. Pipe bursting is a system by which the pneumatic bursting
More informationThe work of this Section includes furnishing and installing Reinforced Concrete Pressure Pipe as shown on the Drawings and as specified.
Section 33 0200- Page 1 of 4 PART 1 - GENERAL 1.1 DESCRIPTION OF WORK The work of this Section includes furnishing and installing Reinforced Concrete Pressure Pipe as shown on the Drawings and as specified.
More informationNebraska Department of Roads Drainage and Erosion Control Manual December 2011 Appendix C: Pipe Material Policy Page C-1 PIPE MATERIAL POLICY
Appendix C: Pipe Material Policy Page C-1 PIPE MATERIAL POLICY Policy: This policy will replace all previous policies regarding the selection of pipe material for cross drains, drive pipe, drop pipe, storm
More informationCONSTRUCTION OF NON-CIRCULAR SEWER REHABILITATION PROJECTS IN LOS ANGELES
North American Society for Trenchless Technology (NASTT) No-Dig Show 2010 Chicago, Illinois May 2-7, 2010 Paper C-4-04 CONSTRUCTION OF NON-CIRCULAR SEWER REHABILITATION PROJECTS IN LOS ANGELES Brad Jenson
More informationSection 2100-Trenching and Tunneling
SECTION 5200 - STORM SEWER PART 1 - GENERAL 1.01 SCOPE: This Section covers installation of storm sewer mains and culverts. Topics include permits and fees, trench widths, pipe laying, bedding, initial
More informationBEST PRACTICE GUIDELINES FOR CULVERT LINER SELECTION
BEST PRACTICE GUIDELINES FOR CULVERT LINER SELECTION GENERAL Rehabilitation of culverts with pipe liners is one of several methods available for extending the life of an existing culvert. It is often cost
More informationHigh Density Polyethylene Liners for Rehabilitation of Corroded Pipelines
High Density Polyethylene Liners for Rehabilitation of Corroded Pipelines Jeff Schell General Manager United Pipeline Middle East, Inc. Introduction HDPE Liners A cost effective and environmentally beneficial
More informationInstallation of Large Diameter Buried Pipes
Installation of Large Diameter Buried Pipes Sullivan (Sully) Curran P. E., Executive Director I. Introduction and Scope There is an ongoing need to provide designers, specifiers, engineers, consultants
More informationTECHNICAL NOTE Lining of Casings with SaniTite HP Pipe
TECHNICAL NOTE Lining of Casings with SaniTite HP Pipe TN 5.18 October 2015 In sanitary sewer, it is often necessary to use trenchless technology methods to install a casing pipe under high volume roads,
More informationDIVISION 2 - SEWERAGE AND DRAINAGE SECTION 02720 - STORM DRAIN SYSTEMS PART 1 - GENERAL
DIVISION 2 - SEWERAGE AND DRAINAGE SECTION 02720 - STORM DRAIN SYSTEMS PART 1 - GENERAL 1.01 DESCRIPTION A. Furnish and install all storm drains, including manholes, inlets, service lines and other appurtenant
More informationCLEANING, INSPECTION, AND TESTING OF SEWERS
CLEANING, INSPECTION, AND TESTING OF SEWERS PART 1 - GENERAL 1.01 SECTION INCLUDES A. Cleaning, Inspecting, and Testing Sanitary Sewers B. Cleaning, Inspecting, and Testing Storm Sewers C. Cleaning and
More informationSewer Line Rehabilitation
1.0 GENERAL 1.1 DESCRIPTION: This specification shall cover the rehabilitation of existing sanitary sewers using the GRUNDOCRACK PIPE BURSTING SYSTEM. Pipe bursting is a system by which the pneumatic bursting
More informationState of Illinois Department Of Transportation CONSTRUCTION INSPECTOR S CHECKLIST FOR STORM SEWERS
State of Illinois Department Of Transportation CONSTRUCTION INSPECTOR S CHECKLIST FOR STORM SEWERS While its use is not required, this checklist has been prepared to provide the field inspector a summary
More informationAnnular Space Grouting of Slipline Products
Annular Space Grouting of Slipline Products by David Gellings(, M.APWA & John Jurgens(, M.WWCPA Traditional methods of using neat cement slurries, (Portland cement and water, cement with fly ash or cement
More informationSection 02702 SEWER PIPE INSTALLATION AND TESTING
PART 1 - GENERAL Section 02702 SEWER PIPE INSTALLATION AND TESTING 1-1. SCOPE. This section covers the installation and testing of all sewer pipe furnished under the following specification sections: Concrete
More information12/8/2014. Brought To You By: This webcast is sponsored by NASSCO with the support of IPBA.
Brought To You By: This webcast is sponsored by NASSCO with the support of IPBA. 1 Pipe Bursting A Mature and Diverse Trenchless Technology December 10, 2014 1:00 3:00 pm Eastern How to Participate Today
More informationRelining of Water Mains with. Flexible High Pressure Pipelines. Raedlinger Primus Line, Inc. Ivan Zubiaga Executive Vice President 2014
Relining of Water Mains with Flexible High Pressure Pipelines Raedlinger Primus Line, Inc. Ivan Zubiaga Executive Vice President 2014 Aging water main infrastructure The American Society of Civil Engineers
More informationTRENCHLESS TECHNOLOGY GUIDELINES CLOSE FIT THERMOPLASTIC LINING
TRENCHLESS TECHNOLOGIES RESOURCE CENTRE TRENCHLESS TECHNOLOGY GUIDELINES SECOND EDITION CLOSE FIT THERMOPLASTIC LINING NEW VERSION AUGUST 2005 1. OVERVIEW The use of liners that are deliberately deformed
More informationRehabilitation or Replacement? That Is The Question
Rehabilitation or Replacement? That Is The Question Chris L. Windley PE Greg Anderson, PE 94th Annual Conference November 18, 2014 Overview Project Background Existing Sewer Condition Flow Projections
More informationREVIEW OF TRENCHLESS TECHNIQUES FOR THE REHABILITATION OF SEWERS. Gerhard (Gerry) P. Muenchmeyer, P.E. Muenchmeyer Associates, LLC
REVIEW OF TRENCHLESS TECHNIQUES FOR THE REHABILITATION OF SEWERS Gerhard (Gerry) P. Muenchmeyer, P.E. Muenchmeyer Associates, LLC What is really out there? DO YOU DIG IT? INDUSTRY CONCERNS UNEXPECTED DEVELOPMENTS
More informationPipe Bursting. Case Study at Zeeland, MI Collections Seminar September 6, 2012. Presentation Agenda. What is Pipe Bursting? What is Pipe Bursting?
Pipe Bursting Case Study at Zeeland, MI Collections Seminar September 6, 2012 By: Brian Hannon, PE and John Racek, PE Presentation Agenda What is Pipe Bursting? History of Pipe Bursting Types of Pipe Bursting
More informationREHABILITATION OF UNDERGROUND SEWER LATERAL PIPES WITH CURED-IN-PLACE-PIPE LINER SECTION 02542
1.0 INTENT REHABILITATION OF UNDERGROUND SEWER LATERAL PIPES 1.01 It is the intent of this specification to provide for the reconstruction of pipelines and conduits by the installation of a resin-impregnated
More informationPROVIDING THE SAFE CHOICE FOR UNDERGROUND PIPE RENEWAL, INTEGRITY MANAGEMENT AND ASSET RELIABILITY
PROVIDING THE SAFE CHOICE FOR UNDERGROUND PIPE RENEWAL, INTEGRITY MANAGEMENT AND ASSET RELIABILITY Cured-In-Place Pipe Pressure & Gravity Lines Pipe Splitting Trenchless Pipe Replacement EcoCast Advanced
More informationThe Most Advanced Name in Drainage Systems. Sanitary Sewer Pipe
The Most Advanced Name in Drainage Systems Sanitary Sewer Pipe SaniTite Sanitary Sewer Pipe delivers the features that engineers, contractors and municipalities demand durability, performance, handling,
More informationSECTION 5: SANITARY SEWER SYSTEM DESIGN
SECTION 5: SANITARY SEWER SYSTEM DESIGN 5.01 GENERAL Sanitary sewer improvements shall be designed to serve the ultimate level of City development as defined in the General Plan and the Wastewater Facilities
More informationUNDERGROUND INFRASTRUCTURE SPECIALISTS TABLE OF CONTENTS
U UNDERGROUND INFRASTRUCTURE SPECIALISTS TABLE OF CONTENTS 3. COMPANY PROFILE A growing company excelling in the fields of infrastructure repair and maintenance. 6. MANDREL TESTING Individually approved
More informationWater Transmission & Sewer Force Main Renewal 16 through 60
Water Transmission & Sewer Force Main Renewal 16 through 60 North American Operations 1973 S 91 st Street Milwaukee WI 53227 4700 N Pearl Street Jacksonville FL 32206 office 414.321.2247 fax 414.321.2297
More informationSewer Rehabilitation Design Requirements
Sanitary Sewer Overflow (SSO) Control and Wastewater Facilities Program Sewer Rehabilitation Design Requirements City of Baton Rouge/Parish of East Baton Rouge Department of Public Works Submitted by Prepared
More informationPipeline Replacement using Relining
Pipeline Replacement using Relining Mark Heathcote, March 2006 Relining of old pipeline systems is becoming an increasingly attractive option to asset owners and operators as an effective alternative to
More informationSECTION 55 PIPE FOR STORM DRAINS AND CULVERTS (FAA D-701)
SECTION 55 PIPE FOR STORM DRAINS AND CULVERTS (FAA D-701) 55-1 GENERAL The Contractor shall perform all work required by the plans for construction of pipe for storm drains, precast polymer trench drains
More informationSan Antonio Water System Standard Specifications for Construction ITEM NO. 1103 POINT REPAIRS AND OBSTRUCTION REMOVALS
ITEM NO. 1103 POINT REPAIRS AND OBSTRUCTION REMOVALS 1103.1 DESCRIPTION: 1. Repair of sanitary sewer lines by replacing short lengths of failed pipe with new pipe. 2. Repair of service laterals located
More informationSANITARY SEWER SPECIFICATIONS
SANITARY SEWER SPECIFICATIONS OCTOBER 2003 HARVEST-MONROVIA WATER, SEWER, AND FIRE PROTECTION AUTHORITY SECTION 1.00 1.10 Purpose The purpose of this document is to assemble the sewer specifications, policies,
More information53.03 MATERIALS FOR SEWER LINER PIPE AND FITTINGS: The following materials are approved for installation in sanitary sewer lines:
Division 53: Slip-Lining of Existing Sewer Line 53.01 GENERAL: This section includes all labor, materials, transportation, equipment necessary to rehabilitate by means of Instituform deteriorated sections
More informationSewer Pipe Lining An Economic Solution for Pipe Rehabilitation By Tawana Albany Nicholas, Virgin Islands Waste Management Authority
Sewer Pipe Lining An Economic Solution for Pipe Rehabilitation By Tawana Albany Nicholas, Virgin Islands Waste Management Authority Abstract The United States Virgin Islands Waste Management Authority
More informationCHAPTER 6 - SANITARY SEWER
CHAPTER 6 - SANITARY SEWER 6.1 GENERAL This section covers the requirements for PVC plastic sewer pipe materials and installation in sanitary sewer construction. 6.2 PIPE PVC gravity sewer pipe and fittings
More informationSECTION 08000 STORM DRAINAGE TABLE OF CONTENTS
SECTION 08000 STORM DRAINAGE 08010 DESIGN A. Location B. Sizing TABLE OF CONTENTS 08020 MATERIALS A. Pipe Materials B. Structure Materials C. Installation D. Inlets and Outlets 08030 INSPECTIONS AND TESTING
More informationSECTION 02612 NONREINFORCED CONCRETE SEWER PIPE
SECTION 02612 PART 1 GENERAL 1.1 SUMMARY A. Section Includes: Furnishing and installing nonreinforced concrete sewer pipe. Provide concrete sewer pipe less than 12 inches in diameter, and in other sizes
More informationTrenchless Construction Technology and Issues
Trenchless Construction Technology and Issues Dr. Mohammad Najafi, P.E., F. ASCE Director, Center for Underground Infrastructure Research & Education (CUIRE) Professor and Director of Construction Engineering
More informationSECTION 33 11 00.11 POLYVINYL CHLORIDE (PVC) PIPE
SECTION 33 11 00.11 POLYVINYL CHLORIDE (PVC) PIPE PART 1: GENERAL 1.01 SECTION INCLUDES PVC pressure pipe and fabricated fittings in nominal sizes 4-inches through 12-inches with cast iron pipe equivalent
More informationWater Main Lining A Sustainable Alternative to Open Cut Replacement
Water Main Lining A Sustainable Alternative to Open Cut Replacement Sean O Dell, PE Baxter & Woodman, Inc. B&W Client Seminar, Crystal Lake May 1, 2014 Agenda Why, What, When, Where, Who, How Reduction
More informationThe Unique, Centrifugally Cast, Fiberglass-Reinforced, Polymer Mortar Pipe
The Complete HOBAS Guide The Unique, Centrifugally Cast, Fiberglass-Reinforced, Polymer Mortar Pipe Facts & Specifications Why Pick HOBAS? The HOBAS name on the pipe says you ve chosen the leader in pipe
More informationSECTION 02720 SANITARY SEWER AND STORM DRAIN SYSTEMS
SECTION 02720 SANITARY SEWER AND STORM DRAIN SYSTEMS PART 1 GENERAL 1.01 SECTION INCLUDES A. The requirements for pipe material and installation in sewer and drainage collection systems. All materials
More informationRehabilitation Alternatives. MWEA Collection System Seminar October 1, 2009
Rehabilitation Alternatives MWEA Collection System Seminar October 1, 2009 Overview Types of Rehabilitation Trenchless Categories On-Line Replacement In-Situ Options Selecting the Best Solution Types of
More informationRoyal Seal Gasketed Sewer Pipe
Royal Seal Gasketed Sewer Pipe Royal Seal Gasketed Sewer Pipe Royal Seal gasketed sewer pipe with our specially designed Double Seal Locked-In (DSLI ) gasket is an extremely durable pipe with a leak proof
More informationSECTION 33 41 13 PUBLIC STORM UTILITY DRAINAGE PIPING
SECTION 33 41 13 PUBLIC STORM PART 1 - GENERAL 1.01 SECTION INCLUDES A. Storm drainage piping, fittings, and accessories at proposed station areas and locations other than under and immediately adjacent
More informationIndustrial Pipeline Integrity Management & Remote Polyurea Pipe Lining Systems.
Industrial Pipeline Integrity Management & Remote Polyurea Pipe Lining Systems. Aging pipeline infrastructure and industry s inability to evaluate and inspect has left many engineers and plant managers
More informationA. Contractor shall furnish, to the Engineer, all materials certifications available from the manufacturer for all required materials.
PART 1 GENERAL 1.1 SCOPE A. This item shall include the work necessary for the installation of storm sewer line construction. B. Reference Section 3800 Trenching and Backfill and the General Conditions,
More informationUtilizing Remaining Useful Life for Asset Management of Critical Wastewater Assets
*Jessica Brown, P.E., Freese and Nichols, Inc., (817) 312-6980; Jessica.Brown@freese.com Mazen Kawasmi, Freese and Nichols, Inc. ABSTRACT The City of Fort Worth s wastewater collection system includes
More informationSection 402. STORM SEWERS
402.02 Section 402. STORM SEWERS 402.01. Description. This work consists of constructing storm sewers of the size and class required, including excavation, bedding, and backfill. 402.02. Materials. Provide
More informationBeacon Hill Sewer District Standard Specifications
Beacon Hill Sewer District Standard Specifications Residential Gravity Side Sewer Including Design Criteria and Standard Construction Drawings Residential Gravity Side Sewer Design Criteria 1. Provisions
More informationGreensboro s Pilot Program for Water Pipe Bursting Leads to Expanded City Wide Program
North American Society for Trenchless Technology (NASTT) NASTT s 2013 No-Dig Show Sacramento, California March 3-7, 2013 TA-T3-05 Greensboro s Pilot Program for Water Pipe Bursting Leads to Expanded City
More informationSECTION LS 2530 SANITARY SEWERS. A. General: Submit the following in accordance with The General Conditions.
SECTION LS 2530 SANITARY SEWERS PART 1 GENERAL 1.1 SUBMITTALS A. General: Submit the following in accordance with The General Conditions. 1. Product data for drainage piping specialties. 2. Shop drawings
More information4 Steps for Quality Sewer Performance in Perpetuity
4 Steps for Quality Sewer Performance in Perpetuity By Gerhard Gerry P. Muenchmeyer, P. E. Principal Muenchmeyer Associates, LLC E-mail gerry@muenchmeyerassoc.com INTRODUCTION A well maintained and functional
More information32-02.05 Precast Manhole Sections and Castings. These items shall conform to Section 31, "Storm Drain Installation," of these Standard Provisions.
SECTION 32: SANITARY SEWER INSTALLATION 32-01 SCOPE. The Work shall consist of furnishing and installing sewer mains, manholes, laterals, cleanout fittings and appurtenances; and testing, flushing and
More informationLetty Arvide-Gomar, PE
Letty Arvide-Gomar, PE Outline DIP History and Applications Corrosion Issues Internal Cleaning Technologies Rehabilitation Options DIP History and Applications Corrosion Issues Internal Cleaning Technologies
More informationTHE BIG FIX: Public works administration would be easy if infrastructure. San Diego s Sewer Renewal Program. By Steve Gibbs
THE BIG FIX: San Diego s Sewer Renewal Program By Steve Gibbs Public works administration would be easy if infrastructure lasted forever. It does not. Roads, bridges and sewers eventually wear out. Even
More informationMicropiles Reduce Costs and Schedule for Merchant RR Bridge Rehabilitation
Micropiles Reduce Costs and Schedule for Merchant RR Bridge Rehabilitation Jeff R. Hill, P.E. Hayward Baker Inc. 111 W. Port Plaza Drive Suite 600 St. Louis, MO 63146 314-542-3040 JRHill@HaywardBaker.com
More informationLEE S SUMMIT USES PIPE BURSTING TO BROADEN ITS ASSET MANAGEMENT TOOLBOX AND REHABILITATE POTABLE WATER DISTRIBUTION SYSTEM
North American Society for Trenchless Technology (NASTT) No-Dig Show 2010 Chicago, Illinois May 2-7, 2010 Paper D-4-02 LEE S SUMMIT USES PIPE BURSTING TO BROADEN ITS ASSET MANAGEMENT TOOLBOX AND REHABILITATE
More information725-R-599 PIPE LINING. (Revised 05-01-12) SECTION 725, BEGIN LINE 1, INSERT AS FOLLOWS: SECTION 725 SLIP LINING OF EXISTING PIPE
PIPE LINING (Revised 05-01-12) The Standard Specifications are revised as follows: SECTION 725, DELETE LINES 1 THRU 317. SECTION 725, BEGIN LINE 1, INSERT AS FOLLOWS: SECTION 725 SLIP LINING OF EXISTING
More informationBefore H 2 Town of South Windsor, CT Evaluates Large Diameter Concrete Pipe
Before H 2 Town of South Windsor, CT Evaluates Large Diameter Concrete Pipe September 11, 2012 NEWEA Collection Systems Conference Presented by: Laurie L. Perkins, PE Dennis A. Dievert, PE C. Frederick
More informationAPPLICATION OF GLASS-REINFORCED PLASTIC TO SEWER REHABILITATION
North American Society for Trenchless Technology (NASTT) NO-DIG 2005 Orlando, Florida April 24-27, 2005 APPLICATION OF GLASS-REINFORCED PLASTIC TO SEWER REHABILITATION Lynn Osborn 1 1 ArmourGRiP Product
More informationINSTALLATION OF INSITUFORM LINER
PART 1 GENERAL 1.1 SCOPE: A. This item shall include all work and materials to install, insert a flexible polyester felt liner saturated with a thermo-setting resin into the existing sewer line for rehabilitation
More informationCHAPTER 3 STORM DRAINAGE SYSTEMS
CHAPTER 3 STORM DRAINAGE SYSTEMS 3.7 Storm Drains 3.7.1 Introduction After the tentative locations of inlets, drain pipes, and outfalls with tail-waters have been determined and the inlets sized, the next
More informationPipe bursting provides viable alternative for rehab work By Greg Key, U.S. Pipe
Pipe bursting provides viable alternative for rehab work By Greg Key, U.S. Pipe As the Environmental Protection Agency tightens groundwater quality regulations, old leaking sewers lines made of pipe clay,
More informationSECTION 6 SANITARY SEWER MAIN 6.01 SCOPE
6.01 SCOPE The work covered by this section of the specifications consists of the furnishing of all plant, labor, materials, equipment and supervision and performing all operations involved in the construction
More informationCarlon Bore-Gard and Boreable Multi-Gard Raceway
Carlon Bore-Gard and Boreable Multi-Gard Raceway Bore-Gard Schedule 40 Bore-Gard Schedule 80 Boreable Multi-Gard Type 40 www.carlonsales.com 231 Bore-Gard Trenchless Raceway Carlon Bore-Gard Trenchless
More informationCHALLENGES IN LINING A 100 YR OLD BRICK SEWER
North American Society for Trenchless Technology 2007 No-Dig Conference & Exhibition San Diego, California April 15-20, 2007 CHALLENGES IN LINING A 100 YR OLD BRICK SEWER Brad Jenson 1, Keith Hanks 2,
More informationPRODUCT CATALOGUE. for. SMARTPHONE / WEBSITE / DIGITAL EDITION / BOOK / ipad / GPS
PRODUCT CATALOGUE for This product catalogue has been downloaded from COSSD.com. Listed products/services and their descriptions are shown as supplied by the title company COSSD does not guarantee the
More informationSECTION 9.02 BUILDING SUBSURFACE DRAINS (PERIMETER, ETC.)
CHAPTER 9 SEWER / STORM DRAIN / IRRIGATION LINES SECTION 9.01 GENERAL This section covers the requirements for piping materials and installation of Lehi City sewer, storm drainage and irrigation collection
More informationLS 2540 SEWER LATERALS AND INSPECTION TEES
LS 2540 SEWER LATERALS AND INSPECTION TEES A. Summary B. Submittals C. Site Information D. Sewer Pipe and Fittings E. Lateral Locations F. Lateral Installation G. Inspection Tee Installation H. Removal
More informationNON-CIRCULAR SEWER LINER INSTALLATION AND FUTURE PROJECTS IN LOS ANGELES
North American Society for Trenchless Technology 2008 No-Dig Conference & Exhibition Dallas, Texas April 27 May 2, 2008 NON-CIRCULAR SEWER LINER INSTALLATION AND FUTURE PROJECTS IN LOS ANGELES Brad Jenson
More informationMeeting the Challenge of Pipeline Emergency Repair
Meeting the Challenge of Pipeline Emergency Repair Michael R. McReynolds, PE, SE 1 Tao Peng, PE, SE 2 ABSTRACTS The Metropolitan Water District of Southern California (MWD) is the nation s largest provider
More informationUtilizing Trenchless Technology to Achieve Watermain Asset Management Objectives
North American Society for Trenchless Technology (NASTT) NASTT s 2015 No-Dig Show Denver, Colorado March 15-19, 2015 MM-T6-05 Utilizing Trenchless Technology to Achieve Watermain Asset Management Objectives
More informationSan Antonio, TX July 28, 2011
Rehabilitation of a Deteriorated 60 RCP Wastewater Interceptor Using Competing Trenchless Technologies Bruce Cole, PE Corey Anderson, EIT TAWWA/WEAT Summer Seminar San Antonio, TX July 28, 2011 Wendy Martinez,
More informationWEFTEC.06. Kent Von Aspern,* Collins Orton** *Carollo Engineers 2700 Ygnacio Valley Rd Suite 300 Walnut Creek, CA 94598
Lessons Learned from Large Diameter Sanitary Sewer Pipe Bursting Project: Conversion of Abandoned Gravity Sewer Main Into Upsized Sanitary Force Main South San Francisco, CA Kent Von Aspern,* Collins Orton**
More informationDISTRIBUTION PIPING MATERIALS: BUILDING HYDRONIC SYSTEM MANAGEMENT. Jim Riley, Texas A&M University February 10, 2015
DISTRIBUTION PIPING MATERIALS: BUILDING HYDRONIC SYSTEM MANAGEMENT Jim Riley, Texas A&M University February 10, 2015 Piping at Texas A&M 2 History of Distribution Piping at Texas A&M Concrete reinforced
More informationSECTION 02763 POINT REPAIRS TO SANITARY SEWERS. A. Repairs to existing sewer lines by replacing short lengths of failed pipe.
SECTION 02763 PART 1 G E N E R A L 1.01 SECTION INCLUDES A. Repairs to existing sewer lines by replacing short lengths of failed pipe. 1.02 UNIT PRICES A. Measurement for point repairs is on a unit price
More informationUltraviolet (UV) Light Cured Fiberglass Reinforced Cured-In-Place Pipe (CIPP) It is not just for sanitary sewer rehabilitation
Ultraviolet (UV) Light Cured Fiberglass Reinforced Cured-In-Place Pipe (CIPP) It is not just for sanitary sewer rehabilitation Dan Broderick Director of Pipeline Rehabilitation ACHEN-GARDNER ENGINEERING,
More informationSpecifications for Residential Property Owners Connection to New Public Sewer
Specifications for Residential Property Owners Connection to New Public Sewer Spalding Tract property owners are required to connect to the community sewer system when construction is complete and the
More informationHigh Strain Dynamic Load Testing of Drilled Shafts
Supplemental Technical Specification for High Strain Dynamic Load Testing of Drilled Shafts SCDOT Designation: SC-M-712 (9/15) September 3, 2015 1.0 GENERAL This work shall consist of performing high-strain
More informationTrenchless Technology for Drainage Structures
Trenchless Technology for Drainage Structures Richard S. Williammee, Jr., MSCE, P.E. District Materials Engineer Fort Worth District TxDOT 2011 Transportation Short Course October 11, 2011 There are textbooks
More informationBROOKS BRIDGE WATERLINE REHABILITATION
The North American Society (NASTT) and the International Society for Trenchless Technology (ISTT) International No-Dig Show 2009 Toronto, Ontario Canada March 29 April 3, 2009 Paper C-3-02 BROOKS BRIDGE
More informationPIPE REHABILITATION. Industrial Wastewater Municipal Wastewater Drinking Water Pressure Pipes
PIPE REHABILITATION Industrial Wastewater Municipal Wastewater Drinking Water Pressure Pipes About Us An HDPE after mechanical insertion into an egg-shaped brick work sewer sized 1400 x 2100 mm (or 56
More informationREHABILITATION OR REPLACEMENT? THAT IS THE QUESTION
REHABILITATION OR REPLACEMENT? THAT IS THE QUESTION ABSTRACT Chris L. Windley PE, McKim & Creed, Inc. Ben R. Latino, Jr., PE, McKim & Creed, Inc. Greg Anderson, PE, McKim & Creed, Inc. When designing to
More informationSewer systems: Failures and rehabilitation
Water Utility Journal 8: 17-24, 2014. 2014 E.W. Publications Sewer systems: Failures and rehabilitation C. N. Damvergis Hellenic Association of Hydraulic Works and Water Resources Management Consulting
More information