Manhole Systems Articles

  • 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.

  • Dutch Utility Inspects Rising Main With Acoustic Tool And Reduces Risk On Critical Asset

    It’s a major event when you’ve been asked to perform a first in terms of a pipeline inspection. For starters, you must feel confident in the inspection technology you recommend. Second, you hope that all your planning for deployment and unexpected contingencies has been anticipated. And finally, with so many eyes focused on the outcome, you hope the first inspection of its kind goes ...


    By Pure Technologies

  • 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.

  • Taif - SWCC - Case Study

    City /Country: Taif /Kingdom of Saudi Arabia Client: SWCC Contractor: Toledo Arabia Company Date: April-2016 Services: Training of usage pipe plug and pipe test plug (with by-pass) Toledo, the contractor, has a challenging project in Taif, which is mountainous area. Slope of the pipe lines are very ...


    By PLUGCO

  • Tech Spotlight: DT340 Pipe Crawler Freewheel (AFW) by Deep Trekker

    A deeper look into pipe crawler freewheel and the best ways to retrieve CCTV pipe inspection crawlers from municipal pipes. ...


    By Deep Trekker Inc.

  • 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

  • Dammam - Aramco - Case Study

    City /Country: Dammam /Kingdom of Saudi Arabia Client: ARAMCO Contractor: AZMEEL CONTRACTING COMPANY Date: FEBRUARY-2017 Services: Installation of pipe plug It was necessary to add a new pipe line and manhole to the existing sewage pipe line an ongoing project belonging to the ARAMCO company. The ...


    By PLUGCO

  • A comparison of three dual drainage models: shallow water vs local inertial vs diffusive wave

    In this study we compared three overland flow models, a full dynamic model (shallow water equation), a local inertial equations model (gravity wave model), and a diffusive wave model (parallel diffusive wave model). The three models are coupled with the same full dynamic sewer network model (SIPSON). We adopted the volume exchange between sewer and overland flow models, and the hydraulic head ...


    By IWA Publishing

  • A new methodology for surcharge risk management in urban areas (case study: Gonbad-e-Kavus city)

    This research presents a simulation-optimization model for urban flood mitigation integrating Non-dominated Sorting Genetic Algorithm (NSGA-II) with Storm Water Management Model (SWMM) hydraulic model under a curve number-based hydrologic model of low impact development technologies in Gonbad-e-Kavus, a small city in the north of Iran. In the developed model, the best performance of the system ...


    By IWA Publishing

  • WaStop Access protects residents in Lewiston NY, USA - Case Study

    Location: Lewiston New York, USA Client: City of Lewiston Problem: The effect of combined sewers (combined wastewater and storm water) and an area prone to flooding from the Niagara River, a section of Upper Mountain Rd in Lewiston New York have experienced repeated flooded basements. On a visit with Jeffery Ritter of the City of Lewiston, Bob ...


    By Wapro AB

  • 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

  • Pioneering Primer from Plastics Pipe Institute

    With administrative offices located in Dallas, Texas, The Plastics Pipe Institute Inc. (PPI) is the major trade association representing all segments of the plastics piping industry. PPI members share a common interest in broadening awareness and creating opportunities that expand market share and extend the use of plastics pipe in all its many applications. As an association, PPI focuses ...


    By TRIC Tools Inc.

  • Precautions you Need for Working at Height

    Recognising the risks and preparing safety measures When we talk about ‘working at height’ the first thing that comes to mind is likely to be tall buildings and nauseating pitfalls, however the definition is much broader than most people might think. Any place where someone could fall from one level to another lower one and suffer injury is defined as working ...


    By SHEilds Ltd

  • 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

  • Underground Effluent Pipe - Case Study

    Project: UNDERGROUND EFFLUENT PIPE Client: Southeastern pulp & paper mill General Scope: Over 5000 ft. of 24” and 30” diameter FRP pipe to carry effluent from the bleach plant to holding ponds. Engineering/Procurement: BROWN & ROOT, INC. – Houston, Texas Resin & Laminate ...


    By Fibrex Corporation

  • 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

  • Pearl river valley water supply district case study

    Performance History and Discussion In-Pipe Technology implemented the first phase of a collection system Professional Services Program in 2001. Beginning in 2002, additional collection system basins were added to the services program. Currently, the treated areas include the North and South shore of the Pelahatchie Bay, the Main Harbor, and two Lagoon Waste Water Treatment Plant (WWTP) ...

  • Dropshaft cascades in urban drainage systems

    Dropshaft cascades are typical elements of sewer systems in steep urban catchment basins. The design of a dropshaft cascade, which is generally addressed as an optimization problem, also needs to consider the subsequent effects induced on the flow by the different elements of the cascade. Experimental research has been performed at the hydraulic engineering laboratory of the University of ...


    By IWA Publishing

  • 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.

  • 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.

Need help finding the right suppliers? Try XPRT Sourcing. Let the XPRTs do the work for you