A Guide to Trapezoidal Flume Installation

Installing a trapezoidal flume is a lot easier if you follow the right tips. By meeting certain criteria, you’ll be able to install your flume the right way so that it functions the way you need for ongoing operational success. Check out this quick trapezoidal flume installation guide that will help you get your primary flow management device up and running.

Criteria for Upstream of the Flume

Before you install your trapezoidal flume, you’ll need to make sure that the channel upstream of the flume will have the right characteristics. First, you should make sure that the flow that enters your flume will be in a subcritical state. If the flow is too fast, your flume will not work correctly. Similarly, the flow should be free from turbulence, which can interfere with your readings.

The upstream channel needs to be free from bends and curves. A channel that is not straight can affect the flow velocity. Clear any vegetative growth or other forms of debris that might interfere with flow, and make sure that the channel is able to transition smoothly into the trapezoidal flume.

Locating the Flume

Once you’ve made sure that the upstream channel meets the right criteria, you can move on to placing the flume. Like all primary flow management devices, your trapezoidal flume needs to be level. First, make sure that the flume is level front to back, and then check that it is level side to side. You should also be certain that the larger end of the flume is pointed towards the upstream channel.

Be sure that the flume is in the center of the channel and that it will capture all of the flow. If any flow bypasses your flume, accurate readings will not be possible. If you’re installing your trapezoidal flume in an earthen channel, which is common, you may need to add extra support to the device to prevent shifting.

Downstream Channel Conditions

This final trapezoidal flume installation guide section is dedicated to the channel downstream of your device. Like the upstream channel, the downstream channel must possess certain characteristics for your flume to work the right way.

First, the downstream channel must be large enough that flow can exit the flume without backing up. If the channel is too small, submergence can occur. Vegetative growth can also cause the flow to back up, so you will need to keep your downstream channel clear. Make sure that the downstream channel is straight for a few feet downstream of the flume, and you should consider adding armoring to the channel so that scouring does not occur. Scouring is when part of the channel washes away, which can displace your flume.

Shop for a Flume

Now that you’ve read this trapezoidal flume installation guide, you should be ready to install a flume that you’ve purchased from Tracom, FRP. We are a leading producer of fiberglass flow products and are proud to offer our customers a large selection of flumes and other devices.

Whatever your flow management needs, we would be happy to provide you with the tools you need for success. Contact Tracom today.

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