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One of the oft-mentioned benefits Packaged Metering Manholes is the ability to integrate flumes and other structures that are larger than the manhole barrel diameter, but what exactly does this mean?

As we’ve seen before in our comparison of H-flume and Parshall flume manufacturers, not all “equal” products are just that…equal. Here we compare the construction details of Packaged Metering Manholes.  Packaged Metering Manholes take proven open…

Let’s be honest:  metering manholes (from an upfront, material cost standpoint) aren’t cheap.  While no one would argue that metering manholes don't provide substantial benefit to their users, part of what you are paying for is a unit that is ready for…

For operators who use them, Fiberglass Packaged Metering Manholes are a great solution to the problem of measuring piped flows below grad. They provide a safe, convenient place in which accurate flow measurement can take place.   Improved measurment accuracy, installation…

Fiberglass Packaged Metering Manholes are a great solution to the problem of measuring piped flows below grade and provide a unique set of benefits to consulting engineers who specify them. To the consulting engineer these benefits include:  installation / measurement…

Every year at Openchannelflow we talk with several hundred consultants, researchers, contractors and end-users about their flow monitoring needs. Because we work extremely hard at answering all questions "flow” on this web site – and this blog in particular - we are…

Parshall Flume Metering Manholes are an excellent solution to the problem of how to monitor below-grade piped flows.  Integrating the popular Parshall flume into a fiberglass manhole, Parshall Flume Metering Manholes are complete, factory-integrated structures capable of…

Fiberglass packaged metering manholes are an innovative solution to the problem of needing to measure piped flow below grade. Packaged metering manholes factory integrate a flow element (usually a flume, but weirs and magnetic flow meters can also be integrated) directly into a…

For years precast concrete manholes have been the default choice in sanitary and storm water applications.  Over the years, though, packaged fiberglass manholes have begun to displace concrete manholes for a number of reasons. Fiberglass manholes are: Light weight (1/10th…

The Parshall flume is the most common type of flume used for monitoring industrial discharges.  The ubiquity of the Parshall flume means that it is usually well understood by pretreatment inspectors and industrial users alike – not an insignificant consideration…

From time to time we like to bring you unusual or innovate approaches that customers use in the field. Located in Red Feather Lakes, CO (elevation 7,890 ft. [2,405 m]), Shambhala Mountain Center is nestled high in the Colorado Rockies in a serene 600-acre mountain valley…

Let’s not kid ourselves – landfill leachate is some nasty stuff. If it has gone into the landfill, there is the likelihood that it has concentrated in the landfill.  This environment can make it exceedingly challenging for primary devices (Flumes, Weirs, and…