The new McElroy Acrobat 315 is helping meet the demand for larger polypropylene pipe fusion capability up to 315mm (12") while offering low- and high-force options for polyethylene pipe. The compact, lightweight machine caters to the HVAC, plumbing and mechanical industry as well as the underground/construction world. It functions as easily indoors in tight work spaces as it does outdoors in the smallest trenches.
Multi-year infiltration leak stopped in one hour with Prime Flex 920
One hour and 30 litres of a hydrophobic polyurethane grout is what it took to stop a gushing water infiltration into Kingston, Ontario’s sanitary sewer system. Kingston sits at the mouth of the Cataraqui River where the St. Lawrence River flows out of Lake Ontario. Much of the city sits on limestone bedrock that must be channeled to install water, sewer and service lines. The leaking manhole was located on a sanitary sewer mainline that crosses a swamp, and the manhole was acting as a drain. How major was the problem? The city had a leak in a manhole of a sanitary sewer line where a 25-cm pipe came into the manhole at the bottom of the bench. Water was flowing around a pipe union at the rate of about 23 litres per minute, according to estimates from Utilities Kingston. That translates into some 12 million litres of infiltration a year, and the leak was active for seven or eight years.
Chemical grouting stops infiltration
“Since chemical grouting is still relatively new in Canada, the client was a bit reluctant to try something they were not familiar with,” says Jim Hill of strataWORKS Canada Ltd., a public works distributor of infrastructure repair solutions. “So we hired a contractor who had been to Prime Resins for training. There was no risk; I knew it would work.” Prime Resins is an Atlanta-based manufacturer of infrastructure repair chemicals, mainly polyurethanes, epoxies, acrylates and polyureas for leak sealing, soil stabilization, slab lifting, lining and structural repair.
Dynamite Contractors injected the resin in the manhole about three metres below grade. The work entailed drilling a series of holes and injecting Prime Resins’ Prime Flex 920 and Kick Fast Kat activator into the holes. Prime Flex 920 is a single-component, water-activated polyurethane resin that is ideal for infiltration problems like this. The job was finished in a morning and cost $4,000.
“The Kingston officials were in disbelief at the results. They had tried several other options before that hadn’t worked, so they did not expect this to succeed,” says Hill.
Infiltration water was mixing with sewage, so additional handling and operation costs included pumping the volume of extra water to the treatment facility, extracting clear water from the sewage and then discharging the water. The cost recovery of the project can be measured in weeks.
Kingston is now conducting field inspections and compiling a prioritized list of manhole and pipe repairs. Similar problems will be fixed using the same grouting method as the first manhole.
“Chemical grouting is definitely a method I would recommend to other municipalities dealing with infiltration challenges,” says Hill. “The awareness and use of chemical grouts for infrastructure repair is still small here in Canada but growing. We always show the municipal public works departments we work with how they can make small, highly effective repairs on their own with easy, ‘crew ready’ cartridges. These make it easy to use and don’t require the investment in pumping equipment.”
While in-house municipal grout crews are becoming more common across the U.S., Hill thinks it could be some time before many Canadian cities are in the same position. “The mandate to focus on asset management and cost benefit analysis is pushing public works departments to implement better strategies, but operating budget constraints too often force managers who want to adopt proactive practices to function in a reactive capacity.”
More from Water & Sewer Construction
The longest horizontal directional drilled (HDD) installation of high-density polyethylene (HDPE) pipe in the United States and Canada was recognized as Project of the Year by the Plastics Pipe Institute, Inc. (PPI). The award was presented to PPI member company ISCO Industries at the association's annual membership meeting in May 2017. PPI is the major North American trade association representing all segments of the plastic pipe industry,
Large underground projects such as rapid transit tunnels are today being built through highly congested areas, both above and below ground. One of the most complex challenges involves accurately locating existing utilities during the design phase and discerning whether the utility can be accommodated or if it must be relocated.
The Vermeer MEGA VAC VXT truck series by McLaughlin is a highly productive vacuum excavator designed to meet increasingly strict weight restrictions and regulations. Ideal for utility and distribution contractors, the VXT Series is a reliable, cost-effective solution for high-production potholing crews. The new 6-inch (15.2 cm) PTO-driven series comes in three standard spoil capacities ranging from 1,200 to 2,000 gallons (4542.5 to 7570.8 L). The VXT series is powered by the industry-proven OMSI Gearbox and a ROOTS 3200 CFM (91 m3/min) blower. The new CAN Control system allows for two-way communication between the remote control and the vacuum excavator, which helps contractors increase jobsite productivity. The new Vacuum Neutral feature allows the blower to breathe free air and stop suction without the need to close the hydraulic gate valve in the boom.
The McElroy TracStar 1200 fuses pipe from 16" OD to 48" OD (450mm to 1200mm) bringing the largest pipe fusion capability to its line of track-mounted machines. Upgrades include an advanced emission control engine that burns ultra-low-sulfur diesel to meet US EPA Tier 4/EU Stage IIIB standards and the ability to upload joint reports to the DataLogger® Vault™ for storage and analysis. A redesigned cowling and rearrangement of internal components allows better access to the engine for maintenance. Other features include hydraulic outriggers for machine stability and leveling, an ergonomic operator platform and remote engine stop/start capabilities.
Con Cast Pipe, a manufacturer of precast concrete drainage products including concrete pipe, manholes, catchbasins, and box units, as well as a wide range of bridge and specialty precast products in Canada, has announced the recent purchase of Hy-Grade Precast Concrete in St. Catharines, Ontario. Due to their outstanding reputation in the Niagara community, Hy-Grade Precast Concrete will continue to operate under the Hy-Grade name and become the third Ontario manufacturing facility for Con Cast Pipe.
McLaughlin launched its biggest machine to date at the CONEXPO-CON/AGG 2017 trade show. The McL-60 Workhorse is a 60-inch (152.4-cm) auger boring machine designed with operator convenience in mind. The low-profile engine design, remote control operation and Rabbit Travel help water, sewer and pipeline contractors install large-diameter casings at a lower cost than directional drilling
Micro Trenching is one of the installation methods being utilized by contractors to bring fiber networks to consumers. Micro Trenching is an installation method in which a narrow and relatively shallow trench is cut, usually on an asphalt roadway. Trench dimensions can range from .75 to 2.24 inches wide and 8 to 16 inches deep. While cutting, a vacuum system connected to the cutter wheel cleanly diverts and transports debris away from the worksite. Once the conduit is laid, the trench is backfilled with a grout compound. Advantages of Micro Trenching include minimal cutting width that boosts installation production, reduce costs of backfill, shallow depth placement which helps avoid encounters with existing utilities and jobsite cleanliness thanks to the vacuum spoil that removes debris.
Advanced Drainage Systems, Inc. (ADS) (NYSE: WMS), a leading global manufacturer of water management solutions, today announced its latest breakthrough in storm water pipe technology, HPXTM 75. This new technology provides heightened levels of stiffness, is available in a range of sizes, and yields significant cost benefits for customers compared to alternative products.
Ditch Witch introduces SK1050 mini skid-steer for superior versatility and productivity on demanding jobsites
Ditch Witch has introduced the construction-grade SK1050 mini skid-steer, ideally suited for a variety of demanding landscape, hardscape and irrigation jobs. The unit improves versatility and productivity by directing more hydraulic power to the attachment.
Vac-Tron Equipment is introducing a new line of vacuum excavation equipment. The new CV (Competitive Vac) Series offers the performance customers expect from Vac-Tron Equipment while keeping the cost of operation to a minimum.
TT Technologies recently introduced a new cutterhead configuration for its Grundoburst static pipe bursting system. The new configuration consists of three specially designed bladed, roller cutterheads in succession. The bladed roller cutting head configuration allows contractors to burst/split large diameter steel and ductile iron pipes when used with larger Grundoburst static bursting systems. The new special cutterhead design allows for a smoother host pipe cut and greater protection for the new pipe.
Vac-Tron Equipment is on a roll. Only one year after releasing their very first HTV (Hydro Truck Vac) PTO, they are now introducing their NEW JTV (Jetter Truck Vac) PTO series. The JTV 873 PTO is a new series of PTO truck driven systems that combine vacuum excavation with high pressure jetter capabilities putting this truck in a league of its own.
MSA XTIRPA confined space entry systems allow for vertical or horizontal entry into common confined space applications such as tanks, vessels, transformers, sewers and manholes.
Avanti International’s AV-248-LV Flexseal LV, AV-275 Soilgrout and AV-315 Microfoam are now certified by the Water Quality Association (WQA) as tested and certified against NSF/ANSI Standard 61 - Drinking Water System Components. Avanti’s products are used to stop leaks, stabilize soil, and control groundwater in municipal, industrial, and geotechnical applications. According to technical director Roger Borremans, “These three products join three other Avanti resins earning Potable Water Certification. Engineers now have more choices between hydrophilic and hydrophobic resins for specifying the exact right product in potable water applications.”
Ditch Witch utility tractors feature re-designed operator stations providing greater comfort and excellent project visibility
Three new, turbocharged utility tractors from Ditch Witch give operators the power to get jobs done more efficiently and with greater comfort.
The population growth of the Town of Milton, Ontario in recent years has been phenomenal. With the province’s Places to Grow legislation, this growth is expected to continue for many years. The Boyne Trunk Sanitary Sewer was identified in the Halton Region’s Wastewater Master Plan as being critical to convey existing and future flows to the Mid Halton Wastewater Treatment Plant in Oakville. The existing sewage pump station and force main conveying sewage from Milton was at its maximum capacity. The commissioning of a new major trunk sewer to replace the existing system and to convey future flows from the northern part of the region was of critical importance.
In order to balance the needs of growing the Region of Halton with the protection and preservation of its natural and heritage resources, Halton initiated Sustainable Halton which developed goals that serve as a blueprint for building a sustainable and healthy community. The need to upgrade the existing wastewater network to service future intensification in Oakville’s Urban Growth Centre was identified as part of the process.
When an old storm water sewer that crossed below a highway and a highly frequented shopping avenue in the City of Quebec partly collapsed and had to be replaced, the city government was presented with a challenge. The solution required a method to renovate the pipeline while keeping traffic disruptions to a minimum.
Vac-Tron Equipment is now rolling out a new size of the PTO (Power Take Off) truck driven vacuum excavator system. This new truck is available on a Ford F-550 and has a 300-gallon size debris tank. It is also available with our patent pending remote debris tank and air compressor.
McLaughlin has introduced the new ECO truck-mounted vacuum excavator series to answer the market’s demand for a compact vacuum excavation system that focuses on performance and improved fuel efficiency. Powered by 49, 85 or 99 horsepower (37, 63 or 74 kW) auxiliary engines, ECO Series vacuum excavators offer utility contractors fuel economy, lower operating costs and reduced maintenance. With the ability to choose from 500- to 1200-gallon (1892.7 to 3028.3 L) spoil tank capacities ― and the ability to mount ECO Series units on both new and used truck chassis ― contractors can customize the truck vacuum excavator to their specific needs.
Geopolymers 101: Ease of application, resistance to corrosion and light environmental footprint among advantages compared to competing spray technologies and CIPP
Geopolymer is a term originally coined by French researcher Joseph Davidovits to describe a class of “cement” formed from aluminosilicates. While traditional Portland cement relies on the hydration of calcium silicates, geopolymers form by the condensation of aluminosilicates. Geopolymers are known to provide comparable or better performance to traditional cementitious binders but with the added advantages of significantly reduced greenhouse emissions, increased fire and chemical resistance, and reduced water utilization.
On Eastlawn Street in the City of Windsor, Ontario, heritage homes on double lots with mature trees beautifully line the narrow street. Not so beautifully, white sewer access caps dot the lawns of more than half of the homeowners. It is a telling sign of the ongoing battle between concerned homeowners and the roots they cannot see underground.
Canadian contractors are cost effectively rehabilitating failing manholes and sewers without excavation or barrel replacement using the Permacast and CentriPipe systems developed by AP/M Permaform (AP/M) and distributed by Martech, Inc. Edmonton-based OSCO Mudjacking & Shotcreting Ltd. applied Permacast on two manhole projects with widely varying challenges:
- A new 9-metre manhole installed as part of Edmonton’s massive project converting the QE II Highway and 41 Avenue SW connection to a grade-separated interchange.
- Six failing manholes in remote Carmacks, a Yukon village.
Available exclusively on the Camel 1200 sewer cleaner, Super Products LLC’s wastewater recycling system features a six-stage water filtration process that enables effective sewer cleaning action without the need for fresh water. And this capability can translate into substantial water, time and money saves for municipalities and sewer contractors.
Doetsch uses Hyjector to clean 5,700-foot sewer segment feeding wastewater treatment plant in Ottawa
Doetsch Environmental Services recently used its proprietary Hyjector system to complete the company’s longest-ever single-run sewer-cleaning project.
It’s no secret that trenchless technologies can offer big cost savings over open-cut excavation. What gets less play is how skipping the big dig can pay off in lower greenhouse gas (GHG) emissions, too.
Ditch Witch enhanced its lineup of vacuum excavators with the trailer-mounted FX65 and truck-mounted FXT65 models for increased productivity on the job site.
Trimble launches new version of its smart water management software to streamline utility field operations
Trimble has announced the latest version of its smart water mapping and work management software—Trimble Unity 3.0. Trimble Unity is a cloud-based, (GIS) centric software-as-a-service (SaaS) solution for smart water management. Version 3.0 includes new features and workflows and also offers an App Builder and new integration capabilities to simplify connecting mobile workers with maps and data from back office enterprise systems.
April is National Safe Digging month and every year many companies, including 811 and Click Before You Dig, promote the importance of having a plan before you begin digging. Every six minutes an underground utility line is damaged and the growing trend in preventing these accidents is utilizing vacuum excavation. There are many instances when vacuum excavation is the safest and most productive option for digging compared to traditional excavation.
Ditch Witch has introduced a new line of air excavators: the FXT30 Air FXT50 Air, and FXT65 Air. The versatile and high-powered FXT Air system has air and water excavation capabilities, making it ideal for locating utilities or gas leaks in below-grade worksites.
Ditch Witch to showcase latest underground construction equipment and training services at Bauma 2016
Ditch Witch will be showcasing innovative equipment designed to help global, underground construction operators be more productive and confident on the job at the 2016 Bauma event. Customer-driven equipment will be on display in Ditch Witch Booth B3-412 at the international trade fair centre in Munich, April 11 to 17.
When cold weather conditions set in, regular maintenance and a heightened awareness of how to keep vacuum excavation equipment operating properly is required to avoid costly repair expenses. In the oil and gas market alone, there are thousands of vacuum excavators at work in oil fields across North America, and a majority of these units are working through the winter in extremely cold conditions.
Often seen as the workhorse of the underground construction industry, the hydro-vacuum truck is almost ubiquitous in its presence on most jobs involving the removal of dirt and debris from underground utilities. Whether it’s potholing to expose buried facilities, sucking up drilling fluid during an HDD project, or custom-fitting a hydrovac truck to perform sewer cleaning operations, the diversity of applications available to a hydrovac make it an indispensable piece of equipment for a utility contractor to own or rent.
The Toro Pro Sneak 365 Vibratory Plow delivers powerful plowing in a compact, maneuverable package perfect for installing drip irrigation lines, electrical cable or other utilities in tight spaces. Utility contractors appreciate the narrow tire configuration of the Pro Sneak, which spans 36” in width, allowing for passage through gates, or other obstacles. Also available on the new Pro Sneak 365 is the dual-tire option for increased traction in challenging ground conditions.
Vermeer has introduced the dedicated FTX25 footings trencher – a stand-on, track-mounted trencher built to dig footings up to 26 inches (66 cm) deep and up to 12 inches (30.48 cm) wide for residential concrete slab installations.
2015 was a game changer for the grouting industry, US Grout, LLC and Avanti International. As of this year, US Grout's Ultrafine SD and Ultrafine ND Cementitious Grouts - solely distributed by Avanti - are now certified by NSF International as conforming to the requirements of NSF/ANSI Standard 61 - Drinking Water System Components - Health Effects. In other words, Ultrafine SD and ND are certified for use in contact with potable water. Since the early 1940s, NSF International has developed standards, tests and certified products and systems to protect and improve global human health. For engineers and contractors, this is a differentiator.
In Canada, the quality of drinking water that flows from the taps of most households is for the most part taken for granted. While the country has pockets of populations with water quality concerns, Canadians generally regard their drinking water not only as safe, but of a higher quality than other developed nations.