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Tri-Bar Weep Wall - manure separation

The Weep Wall is a simple gravity-based manure separation system for dairy farms. It consists of two basins with panels that separate the manure into a wet fraction and a dry fraction.

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The Weep Wall is used in barns with a flushing system. The manure is then flushed and diluted with water several times a day and pumped to the Tri-Bar Weep Wall. The Tri-Bar Weep Wall system is the most cost-effective solid-liquid separation solution. It offers a sustainable, maintenance-free alternative for dairy farms, regardless of their scale or location.

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Weep wall picture

Tri-Bar Weep Wall system

The Tri-Bar Weep Wall system is a simple, manure management system that separates solids and liquids by using gravity rather than machinery. The system consists of two basins constructed of concrete separated by a drainage channel. At each side of the drainage channel are Tri-Bar galvanized steel panels.

How do Tri-Bar Weep Walls work?

When manure is added to a basin, liquids drain through the Tri-Bar Weep Walls into the drainage channel, while the solids are retained in the basin. As there are two basins, the filled basin can drain and dry while the other basin is being filled. The consistency of the solids is dry enough to allow removal with a skid steer. The solids from the basin can then be recycled as bedding, soil improvers, or sold to generate additional income.

Whether you are expanding, building, remodeling or upgrading, Tri-Bar Weep Walls are the most cost-effective system for your dairy operation. Other systems are major contributors to energy use on the farm. Tri-Bar Weep Walls do not require additional energy, equipment or labor and therefore offer the benefit of low-cost operation. Gravity does all the work for you In addition to startup costs, most manure separation systems require maintenance, repair, and training for employees to operate the system. 

The Tri-Bar Weep Wall system includes no mechanical parts so extremely little maintenance is required. The Tri-Bar Weep Wall System effectively removes 60% and, in some cases, up to 85% of total solids, compared to 20-40% with most conventional screen type mechanical separators. There is also a greater separation of fine solids, up to 70% of the sand can be recovered.

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What benefits does a Tri-Bar Weep Wall offer your dairy operation?

✔ Flexibility

If you use Tri-Bar Weep walls, manure does not need to be hauled daily or weekly. Depending on the weather conditions it can be hauled monthly or quarterly leaving you more time to concentrate on herd management. Applying manure to your land can be planned to suit your schedule. You decide when to haul the manure, so you are free to devote your attention to other tasks

✔  For dairy farms of any scale and location

Our systems have been installed and have successfully managed manure for herds from 20 to 20,000 cows in over 17 states in the USA as well as other countries.

✔ Valuable soil improver

With our system you can plan land application as you would any fertilizer application. Consider manure to be an additional resource instead of waste.

✔  High quality

The Tri-Bar panels are made of 3/8” triangle shaped steel bars with a 3/8” opening, which reduce plugged holes. The panels are hot dip galvanized on site, in our state-of-the-art galvanizing facility..

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Basic layout Weep Wall

  • Water can travel a maximum distance of up to 12 meters (40 ft), which means that the maximum distance between the Weep Walls is 24 meters (80 ft). The most common width is 22 meters (72 ft) as shown in the drawing above.
  • We recommend a 1-2% slop-e from the center of the basin to each Weep Wall.
  • Ensure there are always at least 2 basins, 1 to fill and 1 to dry the manure.
  • Weep Wall panels act as the retaining wall. The fibers in the manure act as a filter.
  • Liquid drains into the channels and then on to the basin (manure lagoon).
  • The lagoon water can be used to clean buildings.
  • The manure must be dry enough to be loaded with a skid steer.
  • Basins located in cold climate states need to be emptied before the first snowfall to make sure there is enough basin storage over the cold months.
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