SEWER CONSTRUCTION & REHABILITATION TRACKS A-D

TUESDAY, JAN. 30


Track IA =
SEWER CONSTRUCTION & REHABILITATION

8:30 – 8:55 a.m.

Take Control of Manhole Inflow & Infiltration

Speaker: William Goff, National Sales Manager, Sealing Systems Inc.

 

Many people are aware of the challenges I&I bring to any utility. However, they may not be fully aware of how easy it is to identify the problems and what methods are recommended to fix them. This presentation will give a closer look at infiltration identification, methods and products to use for correction and remediation of I&I. It will also address proactive efforts and products to reduce or deny infiltration and, thus, eliminate the need for rehabilitation. Prevention is always less costly than remediation.

 

9 – 9:25 a.m.

Engineered Gaskets + CIPP = Verifiable Watertight Sealing

Speaker: Rick Gage, Vice President, LMK Technologies

 

Previous CIPP lining trenchless rehabilitation solutions have not been able to adequately renew the collection system or address the significant I&I issues. This is due to water tracking into the annular space between a CIPP liner and the host pipe. To remedy this, engineered and molded hydrophilic Neoprene gaskets were created for use in conjunction with current lining solutions. When exposed to water, the gaskets swell to create a positive compression seal that prevents water from tracking. The presentation will explore the incorporation of engineered, seamlessly molded gaskets with CIPP, research and testing methods used during development, and case studies.

 

9:30 – 9:55 a.m.

UV-Cured Fiberglass CIPP for Pipes That Change Shape

Speaker: Mike App, Senior Project Manager, Precision Trenchless LLC
 

This session will examine the unique application of UV-Cured Fiberglass CIPP into old brick sewers installed in the late 1800s to early 1900s. The sewers in question are of varied diameter and geometry, and shaped during a given manhole segment. The pipe will end up changing shape and diameter three times over a 400-LF run. UV was selected for this project due to its ability to handle the existing shape and not disturb the existing bricks, as they had already been failing. Discussion will include the project, its design, and issues encountered and overcome.

 

10 – 10:25 a.m.

Fast-Tracked Microtunneling Project Benefits all Stakeholders

Speakers: David Kennedy, Senior Project Manager, BRH-Garver Construction

Nick Prince, Construction Project Manager-Buildings & Infrastructure, Jacobs

 

A 15,000’ large-diameter, microtunneling project in Houston was scheduled to last three years. Due to the timing of the project and projected backlog, the contractor requested a fast-tracked schedule by mobilizing a second microtunnel boring machine (MTBM) to work concurrently with the first MTBM, and doubling the estimated production rates. The microtunneling was successfully completed 10 months ahead of schedule. The presentation will discuss challenges of obtaining the required variances; minimizing mobilization cost; site utilization and traffic control; shaft and manhole installation; achieving stakeholder’s goals; and benefits for the contractor, owner and general public.

 

10:30 – 10:55 a.m.

Eagle on a Par 5: Fort Worth’s Sycamore Creek Relief Interceptor Design

Speakers: Liam Conlon, Project Manager, City of Fort Worth Water Department

Justin Reeves, P.E., LEED AP, Project Manager, Lockwood, Andrews & Newnam Inc.

Pierce Smith, EIT, Lockwood, Andrews & Newnam Inc.

 

As populations blossom and existing wastewater infrastructure becomes undersized and worn, adding new assets to a city’s system becomes a need, even with impressive design challenges. This is a case study on the obstacles (including TxDOT crossings, siphon design, railroad crossings, parallel construction and interconnections to an existing interceptor) faced during design and construction of the 5,000 LF City of Fort Worth’s Sycamore Creek Relief (66”) Interceptor. All of these complications, combined with 3,000 LF of the new pipe being located in the Sycamore Creek Golf Course, made for a par 5 engineering challenge with only one option: Go for an eagle.

 

11 – 11:25 a.m.

Vista, CA, Geopolymer Liner Minimizes Culvert Rehab Impact

Speakers: Joe Royer, Ph.D., Development Manager, Milliken Infrastructure Solutions LLC

Collis Parrish, Regional Manager of Business Development, IPR-South Central

 

The 30-year-old, 1,600-acre South Vista Business Park includes 256 LF of a 184-inch multiplate arch culvert running under a primary thoroughfare. The culvert offers maintenance crews access to the sewer easement, functions as a crossing for wildlife and provides a walking path. Corrosion was progressing and the city sought recommendations to either remove or rehabilitate the structure. Any rehabilitation needed to minimize impact on environmentally sensitive areas surrounding the project site, including wetland habitats. This presentation will review the solution, the late-2015 installation involving a high-strength geopolymer liner applied directly to the host pipe in multiple layers.

 

Track I-B = SEWER CONSTRUCTION & REHABILITATION

8:30 – 8:55 a.m.

Lessons Learned on East Baton Rouge Sewer Overflow Comprehensive Rehab

Speakers: Jason Crain, P.E., Deputy Program Manager, Sigma Consulting Group Inc.

Holly Morgan, P.E., Project Manager, Sigma Consulting Group Inc.

Joseph Young, P.E., Program Manager, CH2M

Adam Smith, P.E., Chief of Wastewater Operations & Maintenance, City of Baton Rouge/Parish of East Baton Rouge

 

Performing comprehensive rehabilitation on an aging sewer system, the East Baton Rouge SSO Program has inspected, repaired, rehabilitated or replaced approximately 6.7 million LF of gravity sewer pipe and 28,000 manholes. As with all underground construction, but particularly with maintenance of existing underground facilities, it was inherently complicated by access limitations, land issues, unknown conditions and utility conflicts. Luckily, tools and ideas were available to maneuver through these challenges and achieve a successful project. Over eight years and $300 million, the many lessons learned may be beneficial in being prepared to meet and overcoming similar challenges.

 

9 – 9:25 a.m.

Sioux City Uses HDD to Install Twin 36” Casings for Sewer Siphons

Speaker: David Reuter, P.E., Vice President of Sales-Western Region, Underground Solutions Inc.

 

The city of Sioux City, IA, faced multiple challenges in relocating its sanitary, double-barrel, inverted siphon to clear the way for expansion of Interstate I-29. It had to cross beneath an urban arterial, three Union Pacific Railroad spur tracks, an industrial manufacturer, and a river flanked by a levee on each side, all at once, with minimal disruption, in a timeefficient and cost-effective manner. The answer was HDD: 800-foot separate entry and exit connection points at 60-foot installation depth. A 330,000-lb-thrust/pullforce maxi rig installed twin 36-inch diameter casings, with nested 24- and 30-inch carrier pipes – all fusible PVC pipe.

 

9:30 – 9:55 a.m.

Los Angeles Sewer Repair is Sensitive To Residents’ Concerns

Speaker: Ronald Rugamas, P.E., Civil Engineer-Wastewater Conveyance Construction, City of Los Angeles Department of Public Works

 

The city of Los Angeles’ Secondary Sewer Renewal Program successfully rehabilitated secondary sewer pipes (6 to 15 inches in diameter) on public right-of-way using open-trench method (R&R) and/or cured-in-place liners. In 2016, the city completed two pilot projects under the program, encountering the new challenge of repairing sewers located on easements within private properties. This presentation will share the lessons learned in interacting with the local community to facilitate the goal of improving and maintaining the city’s sewer infrastructure, while being sensitive to residents’ concerns.

 

10 – 10:25 a.m.

Substitute Service Line Improves Health, Safety of Houstonians

Speaker: Daniel Oefner, P.E., M. ASCE, Supervising Engineer, City of Houston Public Works

 

This presentation will explore details of the unique program developed by the city of Houston to improve the health, safety and welfare of citizens. A few years ago, it established the Substitute Service Line Program to respond to failing backlot public underground infrastructure that posed severe maintenance challenges due to a lack of recorded easements, building encroachments, adherence to now-outdated standards and other reasons. Instead of continuing with expensive, reoccurring maintenance costs that often did not address the root cause, a proactive approach reroutes private utilities to public right-of-ways, allowing older utilities to be forever abandoned.

 

10:30 – 10:55 a.m.

Valley Forge, PA, Thermoplastic Rehab of 18,000 LF Pipeline

Speaker: Sean Borris, Project Manager, United Pipeline Systems

 

When a pipeline suffered three major failures near Valley Forge, PA, protected waterways were contaminated, requiring immediate repair or replacement. Assessment of the force main determined that external corrosion had degraded the strength of the wire rope inside the 40-year-old, 30-inch, pre-stressed concrete cylinder pipe, rendering it unable to handle the system’s operating pressure. The presentation will provide an overview of the repair method – thermoplastic close-fit lining system – chosen for the 18,000 LF project. Running through a national park, historic site and protected habitats, plus crossing the Schuylkill River, the emergency rehabilitation required the support and cooperation of several different entities.

 

11 – 11:25 a.m.

First Major Pilot Tube Project in the Detroit Area

Speaker: Steve Matheny, P.E., Logan Clay Products

 

Because minimizing impact and maintaining traffic flow were critical to the urban resendential environment, Detroit’s Township of Clinton specified trenchless technology for 1,000 LF of the project. Pilot tube guided boring was selected as the installation method due to its smaller surface lay-down requirements, and smaller jacking and receiving shafts. A three-step process involving a powered cutter head, installed the product pipe in native stiff clay soil conditions to ⅜ inch or better line and grade accuracy, at distances up to 320 LF. Based on this success, the contractor chose pilot tube guided boring to install the entire 2,080 LF.

 

11:30 – 11:55 a.m.

Pilot Tube Guided Boring Solutions Meet Project Challenges

Speaker: Jason Holden, Director of Sales, Akkerman

 

Pilot tube guided boring allows contractors to accurately tackle extended trenchless gravity flow pipeline installations of 4” to 48” diameter pipe and larger, via guided auger boring, in soft ground up to rock geology within a minimal footprint. The method has positively impacted the auger boring market by ensuring bore accuracy, expediting installations, facilitating longer lengths, and reducing casing diameters for project savings. It has achieved success in rock density up to 12,000 psi, using cutting tools to establish an accurate course for subsequent upsizing tooling. This presentation will explain these methods, along with relevant case studies illustrating solutions that resolved project challenges.


WEDNESDAY, JAN. 31

Track I-C = SEWER CONSTRUCTION & REHABILITATION

8:30 – 8:55 a.m.

Design, Permitting of Trenchless Crossings in USACE Flood Control Projects

Speakers: Mark Miller, P.E., Principal, GeoEngineers Inc.

David Sauls, P.E., Senior Principal, GeoEngineers Inc.

Thomas West, Geotechnical Engineer, U.S. Army Corps of Engineers

Mark Woodward, P.E., Levee Safety Program Manager, U.S. Army Corps of Engineers

 

Federally regulated flood control structures are a critical part of the nation’s infrastructure, protecting lives and billions of dollars. Underground utilities are also important infrastructure components that are unseen by the public, yet provide numerous benefits. Where underground utilities need to cross U.S. Army Corps of Engineers (USACE) flood control structures, protecting these structures is the first order of design. This presentation will discuss the important considerations when designing and permitting trenchless crossings beneath USACE flood control projects. It will also highlight the critical nature of ensuring plans and permit requirements are executed and documented during construction.

 

9 – 9:25 a.m.

Maximize Capacities to Address High-Profile, New Development Impacts

Speaker: Chris Brooks, P.E, Senior Project Manager, RJN Group Inc.; Robert Sauceda, P.E., Senior Professional Engineer, Fort Worth Water Department

 

Wastewater flows in the Village Creek Basin are expected to increase by 18 MGD due to new development. Previously, a relief interceptor was designed through a highly congested corridor along the Arlington and Fort Worth border, including a 681-LF, hand-dug, 70” NAS tunnel liner plate. Revised plans to maximize carrying capacities in the new relief pipeline resulted in a nearly 19% increase, from 48” to 51” diameter. Downstream, an increase from 54” to 66” diameter nearly doubled capacity. This presentation will discuss how a 130-MGD total capacity was achieved for a final $366,457 change order cost.

 

9:30 – 9:55 a.m.

Tampa Junction Emergency Repair Combines Two Rehab Solutions

Speaker: Andrew Costa, Area Manager of Business Development, Insituform Technologies LLC

 

A recent project in the Tampa area combined methods to provide a full rehabilitation solution for three different pipelines. FRP was used on separate segments of ductile iron pipelines measuring 66″, 90″ and 96″ in diameter, connecting to a wastewater junction chamber. CIPP was chosen for a 150′ section of 66″ pre-stressed concrete cylinder pipeline. Project challenges included access, weight restrictions, and coordination with contractors and plant operations. Access issues were roof removal, tower setup inside the vault and tight access at the termination. Coordination with plant personnel enabled each line to be isolated and mechanical removal of large, bulky pipe segments.

 

10 – 10:25 a.m.

Montgomery County’s Design-Bid-Build Approach Uses Innovative Reline Solution

Speaker: Hugh Mickel, P.E., Director-Reline Technologies, Contech Engineered Solutions LLC

 

Montgomery County (Maryland) officials used the traditional design-bid-build approach to lining a 96” diameter, 470’ long culvert under Germantown Road with an 84” diameter spiral rib, aluminized type 2 corrugated steel pipe. When prep work began inside the culvert with workers securing their internal bypass piping, a section of culvert deflected downward and inward about two inches. The workers reached safety, and engineers placed temporary struts and poured a concrete working surface in the invert. Then, an aluminum tunnel plate lined the pipe. This presentation will review challenges and solutions on this culvert reline under 26’ of cover.

 

10:30 – 11:55 a.m.

 

City Panel Discusses Buried Infrastructure Asset Management

Moderator: John D’Antoni, Water Regional Asset Management & Planning Leader, Black & Veatch

Panelists: P.S. Arora, P.E., Director of Wastewater, City of Denton

Shannon Dunne, Acting Senior Assistant Director-Wastewater Operations, City of Houston

Fazle Rabbi, Asset Management Initiative Leader, City of Houston

Riazul Mia, P.E., Utilities Director, City of Laredo

Travis Michel, P.E., Infrastructure Manager, Lockwood, Andrews & Newnam Inc.

 

Cities across the country are balancing growth and other municipal needs with the investments required to rehab and replace aging buried infrastructure. Utility managers are dealing with increasing regulatory and customer service demands, plus funding limitations. Utilities have employed asset management principals to effectively lower life-cycle costs and improve system performance. Three perspectives on these issues and practices will be presented:

  • Denton’s mature bottom-up asset management program that has all employees engaged in reducing asset life-cycle costs and improving customer service.
  • Houston’s challenges in managing over 6,000 miles of buried wastewater system assets.
  • Developing a strategic asset management plan for Laredo.

 

Track I-D = SEWER CONSTRUCTION & REHABILITATION

8:30 – 8:55 a.m.

Dealing With the Sinkhole Phenomenon

Speaker: Thomas Liu, P.E., Consulting Engineer, Wood Group

 

The sinkhole phenomenon has become a common scene in today’s geological formation. To pipeline operators, the sinkhole has detrimental effects on transporting gas and liquid products, safety and economy. Added stress comes from pipe bending, overburden, pipe weight and content must be considered. In addition, internal and external loads can deform the pipeline to a point of becoming inoperable and dangerous. The clear span created within a sinkhole could easily exceed the maximum allowable unsupported length. End conditions are also critical parts of pipe stress. This presentation will discuss these conditions and remedial methods that allow the pipeline to continue operating.

 

9 – 9:25 a.m.

Fort Drum Rehabilitates Four Large Road-Supporting Parallel Pipes

Speakers: Tom Perry, President, Multi Utilities Ventures

Ryan Arold, Vice President & Corporate Secretary, Arold Construction Co. Inc.

 

A recent rehabilitation project at Fort Drum, NY, a 25.4-square-mile U.S. military reservation and census-designated place (CDP), focused on four, large, parallel, 142”-by-91”, arched CMP pipes, supporting a roadway over a trout stream, with 3”-to-0” separation between each barrel and a total span of 56.3’. A centrifugally cast concrete pipe (CCCP) solution was selected for the key arc elements. The design intricacies and material properties ensured a structurally sound, watertight, rehabilitated buried bridge structure that meets the military loading classification (MLC) for wheeled and tracked vehicle traffic.

 

9:30 – 9:55 a.m.

PCCP Problems, Potential Solutions in Sewer Applications

Speakers: Brett Todd, Director of Sewerage, Jefferson Parish Sewerage Department

Robert Delaune, P.E., Vice President & Principal Partner, Digital Engineering

 

This presentation will describe pre-stressed concrete cylinder pipe (PCCP or Price Brothers) and the challenges faced in previous and current sewer applications in Jefferson Parish, LA. Also discussed will be the approach to inspection of Price Brothers pipe in sewer force main applications. This will include the preparation and efforts required for inspection and the different options for performing the work, along with the advantages and disadvantages of each.

 

10 – 10:25 a.m.

Fort Worth’s Low-Pressure Sewer System Extended To Lake Worth Shores

Speakers: Clete Martin, P.E., Principal & Conveyance Group Leader, Alan Plummer Associates Inc.

Walter Norwood, P.E., City of Fort Worth

 

Lake Worth is the second-oldest drinking water supply lake in Texas. The city is extending water and sewer services to areas along its shores, where residential lots have been developed and many expanded over time. All of the lots are served by wells for water and irrigation. Most of the lots have an individual septic system, which due to the lake proximity, is not a desired option for treatment. This presentation will describe the process of converting the lots to be served by constructing three low-pressure sewer systems around the lake.

 

10:30 – 10:55 a.m.

High-Profile Pressure Pipe Rehab in Virginia

Speaker: Ian Lancaster, Senior Director of Pressure Pipe, Aegion Corporation

In 2017, Insituform Technologies undertook a medium-diameter pressure pipe rehabilitation in Fairfax, VA, using its InsituMain CIPP system. As a subcontractor to Garney Construction, Insituform rehabilitated 4,000 LF of pipeline in seven separate installation shots. At the conclusion of the three-month project, lines were pressure tested to 100 psi. The project was unique not only in its use of the special, pressure-rated CIPP product, but also the job site’s high visibility for clients and residents alike. This presentation will highlight project details, along with specification of the pressurized CIPP product.

 

11 – 11:25 a.m.

Franklin Township Sewerage Authority’s Point Repair Program

Speaker: Jordan Eickelberger, Regional Sales Manager, Pipeline Renewal Technologies

 

Franklin Township Sewerage Authority believes in a proactive approach to sewer maintenance. Deciding the current rehabilitation program was not sufficient, in 2016, the company searched for a localized point repair solution that its own crew could perform to abate infiltration points. With the new point repair program, pipe segments are rehabilitated within an hour. The cost savings have been substantial, sometimes as much as 80% less than what it cost for contractors to come and reline pipes. As a result, point repair technologies are saving time and money, improving response time and tackle I&I head-on.

 

11:30 – 11:55 a.m.

Geopolymer Cement Eliminates Risky Trenching Replacement for Manholes, Pipes, Culverts

Speaker: Mario Tamez, President, Standard Cement Materials Inc.

 

It’s not necessary to replace broken manholes anymore. Geopolymer cement with microsilica repairs all deteriorated manholes, and every other water and wastewater structure, by using a “non-destructive,” spray-applied cement liner alternative. Many cities prefer this material because it offers a safe, cost-effective and “no-digging” repair that meets the engineering criteria. The silica-rich geopolymer cement with pozzolan and higher polymerization makes it possible to extend any structure’s service life in ways never before imagined. Its long-term chemical resistance performance is verified through various EPA testing and proven through more than 25 years of service in major cities across America.