Packaged Metering Manhole Basics

packaged metering manhole

When it comes to flow rate measurements, you may need quite a bit of equipment to get it done properly. Underground flows can be especially difficult to measure, but there is a convenient solution you can implement to streamline the process. That solution is a packaged metering manhole. These handy solutions feature not only a flume device that will help you measure flow rate, but the manhole makes it easy to reach the device and take measurements. Learn the packaged metering manhole basics, and discover if this is what you’ve been looking for.

Manhole Parts

In most cases, a standard packaged metering manhole comes in six parts. The first part is the cover, and that comes in quite a few different options. Several covers are available suited for different situations such as pedestrian and vehicle areas. Then, you have the barrel of the manhole, which comes in several different sizes, so consider which size would fit your needs the best.

With a packaged metering manhole, you get the primary flow device as well. This can come in a variety of different shapes and sizes, and depending on your flow, you may even be able to use a weir rather than a flume. Keep in mind that most flumes incorporated into packaged metering manholes are Parshall style, but you’ll see some others as well. Finally, a manhole is equipped with end connections to connect it to a piped system, a base to keep the manhole steady, and a ladder to help operators get in and out.

Advantages of Packaged Metering Manholes

When you opt for a packaged metering manhole, there are quite a few advantages you can enjoy, especially when you opt for fiberglass construction. With fiberglass, you’ll have the benefit of a lightweight manhole to the point where it’s about a tenth of the weight of its concrete counterparts. Additionally, it’s corrosion-resistant, so you can use it even among more abusive flows.

With fiberglass construction, all the parts of the manhole are already factory-integrated before installation. That makes installation itself fast and easy. Plus, the manhole is watertight with options for tops that take these watertight properties to the next level. Additionally, a wide variety of primary devices can easily be integrated into a manhole’s design.

Downsides of Packaged Metering Manholes

While these devices have much to offer, it’s important that you know everything you’re getting into before you decide to get one yourself. The first major obstacle you’ll come across with these manholes is the support requirements. To install one properly, you’ll have to create a concrete slab for mounting. While engineers can do the sizing and installation properly, it is a bit of an endeavor.

The initial cost of a fiberglass packaged metering manhole can put a lot of people off at the start. It’s more costly to build than a concrete manhole, and that means you’ll need more capital at your disposal at the time of purchase even if fiberglass manholes will have you saving money in the end thanks to the easier installation and less required maintenance.

Packaged Metering Manhole from Tracom

Now that you know the packaged metering manhole basics, it’s time to get one for yourself. At Tracom, our team will help you create the perfect packaged metering manhole suitable for your unique open channel flow conditions. Contact us today!

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