manhole opening Articles

  • Balancing growth and conservation - Precast concrete manholes become part of the stormwater solution

    When American Fork, Utah, decided to approve construction of a 175-acre commercial center, the city engineers had to consider the environmental effect it would have on a 45-acre wetland right next door. Under the EPA´s Phase II Storm Water Rules, adapted in late 1999, almost any city large enough to require a storm sewer system must balance growth with the environmental impacts of ...


    By BaySaver Technologies, Inc.

  • Shaw Pipeline - Case Study

    OEM mods allow upsize of 40-foot stretch of sewer pipe beneath busy downtown intersection Challenge Upsize 40 critical feet of 8-inch clay sewer main to 14-inch HDPE beneath a busy downtown intersection, without resorting to excavation. Solution We significantly modified our M100 puller to fit inside a ...


    By Tric Tools, Inc.

  • Measuring Wastewater Below Ground

    Measuring wastewater is one of the most difficult water management tasks that exists. While some wastewater flows are easy to access, others are very hard to measure because they are in open channel conditions and are below grade. If you need to measure below ground wastewater flow, there are a few factors that you need to consider to help you choose the right tool for the job. With a ...


    By TRACOM Inc.

  • A no-brainer for drains

    Pre-fabricated drainage products have saved time and boosted safety on a Welsh road scheme Surface water drainage is not the most visible element of a new road scheme – after all, it’s almost entirely underground. But it is vitally important to any road and it’s one of the first priorities before work starts on the carriageway. At Costain’s £59 ...


    By Kijlstra LTD.

  • Trouble Shooting for Trenchless Liner Installation During Sewer Line Rehabilitation

    ABSTRACTLining is being used by the utility industry as a cost effective solution to rehabilitate utility lines. Many types of liners, such as, cured-in-place-pipe (CIPP), fold and form PVC, deformed & reformed HDPE, etc., are being used to restore structural integrity of deteriorated pipes and to reduce inflow/infiltration. Most of the lining installation is carried out without any problem, ...

  • What too much water can do to your collection systems

    In areas with a high water table, or for cities more prone to flooding, your underground infrastructure can become inundated with groundwater and stormwater. And despite stormwater systems being built for this type of collection, there are a number of things that can go wrong for both types of collection systems underground—and above ground—that can lead to contamination or degraded ...


    By Hamilton Kent

  • Area-Velocity Flowmeter Installations in Denmark - Case Study

    Area-Velocity Flow Meters are designed to monitor flow rates in partially filled pipes and open channels without flumes or weirs. A sealed ultrasonic sensor is mounted on the bottom of the pipe or channel and connected to electronics through a watertight cable. The sensor measures both level and velocity and when calibrated with the pipe diameter or channel dimensions, the Greyline AVFM ...


    By Greyline Instruments Inc.

  • A methodology for linking 2D overland flow models with the sewer network model SWMM 5.1 based on dynamic link libraries

    Pluvial flooding in urban areas is characterized by a gradually varying inundation process caused by surcharge of the sewer manholes. Therefore urban flood models need to simulate the interaction between the sewer network and the overland flow in order to accurately predict the flood inundation extents. In this work we present a methodology for linking 2D overland flow models with the storm ...


    By IWA Publishing

  • Fritz Sick Pool Cultec Parking Lot Rehabilitation

    Improper grading in the parking lot of the Fritz Sick Swimming Pool in Lethbridge, Alberta, led to stormwater flooding in the building and breakdown of the lot’s asphalt and subgrade. The consultant and contractor were open to an approach Nilex proposed, based on a complete solution of supply and installation with a rapid turnaround for design. The ability to respond quickly with a solid ...


    By Nilex

  • Sewer Line Upsize in Perris, CA - Case Study

    Innovative pipebursting approach successfully upsizes old trunk sewer line to serve a new Southern California subdivision Challenge Burst a 350-foot-long trunk line, replacing 10-inch clay pipe with 14-inch SDR-17 polyethylene pipe. Solution We helped Young Homes close escrow on the 95 homes in its Perris, CA ...


    By Tric Tools, Inc.

  • Installing gravity sewer in tough Georgia rock

    It took a contractor who was receptive to an innovative new installation approach, a good deal of patience and a whole lot of determination — after two previous attempts by other contractors using drills and air hammers were unsuccessful — to finally conquer a pesky 800-foot (243.8 m) stretch of tough Georgia blue granite. Hence, project owner Coweta County Water and Sewer Authority ...


    By Vermeer

  • Development of a Passive Operating Scheme for a CSO Capture Tunnel

    ABSTRACTThe Upper Rouge Tunnel (URT) is a proposed seven mile long CSO capture tunnel within the Detroit Water and Sewerage Department (DWSD) combined sewer system that will be filled at drop shafts along its length. During filling, surge waves will result that, if left uncontrolled, could damage structures. Surge control facilities will depend on the operational scheme selected and will be ...

  • Porirua New Zealand – WaStop® DN225 - Case Study

    Porirua City located 20 km north of Wellington has over 70 storm water outlets into the harbour. A number of these outlets are very flat on their approach to the harbour which generally means they are severely influenced by high tides. The problem with these outlets is that if a rain fall event coincides with a high tide, the ability of the storm water network to discharge is severely restricted. ...


    By Wapro AB

  • Using InfoNet to manage a planned sewer maintenance program

    OnSite is a framework contractor for Severn Trent Water, one of the ten water service companies of England and Wales. The company is one of the project coordinators for the utility’s planned sewer maintenance programme and one of three framework contractors working in very close collaboration on its CCTV survey and sewer cleansing program. In addition the company undertakes man-entry surveys, ...


    By Innovyze

  • PLUGCO Attending the 2018 WWETT Trade Show

    We are very excited about attending this international trade fair in Indianapolis, February 22 to 24, 2018.  Once again you will find us in Booth 6400; we look forward to meeting with you and your colleagues and discussing how our pipe plug and accessory products can meet your project needs. You may recall that PlugCo’s extensive product line includes:Flexible ...


    By PLUGCO

  • 500 million litres of raw sewage spill into water source

    Untitled Document The perennial ...


  • A Leap in the Dark – Safety Precautions in Confined Spaces

    Considering the Risks, Preparation and Appropriate PPE Mentioning ‘confined spaces’ probably conjures up some fairly potent claustrophobic – and not entirely pleasant – images in the mind for most. However, do you really know what to look out for and how to address the inherent dangers of entering these spaces? Work within a confined space is likely to be ...


    By SHEilds Ltd

  • Ohio environmental service company skims oils and ends up skimming costs

    For Bluffton Aeration Service Inc. (BASI), purchasing an oil skimmer was more than a cost-effective method for recovering waste oil – it has been invaluable in reducing costs, generating revenue, and attracting new customers. BASI, located in Bluffton, Ohio, is a growing environmental service company that serves a variety of markets, ranging from industrial to municipal and residential. Terry ...


    By Oil Skimmers, Inc.

  • BaSYS 8.0.2 – The Swiss pocket knife for handling sewer or fresh water networks

    An efficient and sustained management of sewer or fresh water systems is a significant task. Any problems with these systems can mean tremendous financial risk for owners and operators of these systems. Such problems can also present large environmental risks. To mitigate such risks a comprehensive application software is needed that can maintain such sewer and fresh water networks. Barthauer ...


    By Barthauer Software GmbH

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