ROWD: Right-Of-Way Dewatering

ROWD sleds are a mobile dewatering structure that can be used over and over. Building conventional straw bale and wooden frame dewater structures is time consuming, wasteful and can create potential issues or violations if improperly constructed. Already constructed upon delivery, the ROWD sled can replace a substantial amount of conventional dewatering structures by eliminating the single-location constraints, saving significant time and money, reducing the risk of environmental compliance issues and simplifying the entire dewatering process. Plus, the ROWD sled design and sturdy steel frame provides a properly built structure in even the most challenging locations.

Conventional Method: A conventional dewatering structure is built of straw bales and wooden posts, constructed on-site and intended to be used only at that location. If assembled incorrectly, these structures will fail. Additionally, the building of many structures takes numerous trips by an entire crew to the dewatering location, increasing the chance for set up errors. Once dewatering at a single location is complete, conventional structures should be removed but are sometimes simply abandoned, becoming a potential hazard to other crews and landowners.

ROWD Sled: With a sturdy steel frame, the ROWD sled eliminates potential failures. A ROWD sled is assembled in the yard and loaded with straw bales and a filter bag prior to use. With the filter material locked between the concentric rectangles to prevent shifting, a ROWD sled can be transported to the dewatering location. The solid steel frame is easily leveled on any terrain using dirt, logs, skids or construction timber mats. Once dewatering is complete, the ROWD sled is removed and taken to a new location. The ROWD sled can be used over and over by simply replacing straw bales as needed, therefore reducing the cost of labor, materials and cleanup.

How It Works
The ROWD sled is assembled by placing the steel panels into the solid steel deck to form inner and outer walls. Straw bales or 18-inch filter sock and a layer of Geotech fabric is added between the walls, and a filter bag in the center. The solid steel deck prevents water from flowing down as is pumped through the filter bag, forcing all water to flow out through the filter material. The sturdy steel frame, inner and outer walls form concentric rectangles that hold the filter material in place, allowing for a high flow rate while maintaining the structural integrity and efficiency.
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How It's Assembled
The ROWD sled is constructed with a solid steel deck and sturdy frame. Each welded panel quickly assembles to form concentric rectangles that lock the filter material and filter bag in place to prevent shifting during use and transport. A quick-connect piping inlet has been designed with a valve to connect the pump discharge hose to the filter bag inside the ROWD sled. This piping allows for a secure connection between the end of the hose and the filter bag. When not in use, such as when moving from site to site, the valve can be closed to prevent the sediment trapped inside the filter bag from escaping.
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Instructions and Data
The ROWD sled has been reviewed and tested with reports on structural calculations to determine limitation of design and flow rate. Results show that ROWD's steel construction eliminates the chance of collapse under continued operating conditions, and the easy transport and re-usability of ROWD cuts down abandoned structures on project sites.
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