The NDS catch basin system, manufactured by NORMA Group, is designed for drainage applications and is available in multiple sizes—9 inch, 12 inch, 18 inch, and 24 inch. These catch basins allow for adjustable outlet levels and are compatible with universal outlets for connecting to piping systems. The system’s load-bearing capacity varies depending on the backfill material or concrete encasement used. This document details installation considerations, outlet configuration, riser specifications, and load rating information based on available documentation.
Catch Basin Outlet Configuration
The 1200NGB catch basin model is specifically designed to accommodate outlets at three different levels. Configuration is achieved by removing tabs on the side panels (part # 1207), which are stamped to indicate the necessary removal points for each desired outlet position.
- High Outlet Position: Removing the top two tabs positions the center of the outlet 5-9/16 inches below the top of the catch basin.
- Centered Outlet Position: Removing both the top and bottom tabs positions the center of the outlet 6-15/16 inches below the top of the catch basin.
- Low Outlet Position: Removing the two bottom tabs on the side panel positions the center of the outlet 9-1/16 inches below the top of the catch basin.
Universal Outlet Compatibility
A universal outlet is required to connect pipes to the NDS catch basins. A catalog detailing available universal outlets can be found at http://www.ndspro.com/resources/information/drainage-catalogs/. The following table outlines the compatibility between specific universal outlet models and catch basin sizes:
| Outlet | 9 inch | 12 inch | 18 inch | 24 inch |
|---|---|---|---|---|
| 1242 | ✅ | ✅ | ||
| 1243 | ✅ | ✅ | ||
| 1245 | ✅ | ✅ | ||
| 1266 | ✅ | ✅ | ||
| 1888 | ✅ | |||
| 1889 | ✅* | |||
| 2410 | ✅ | ✅ | ✅ | ✅ |
*Note: The asterisk next to outlet 1889 indicates a potentially limited or specific compatibility not further detailed in the provided documentation.
Riser Specifications and Limitations
NDS catch basins can be extended using risers, available in 18 inch and 24 inch sizes. Certain limitations apply to riser modification:
- Cutting Restrictions: The 18 inch and 24 inch risers cannot be cut to shorter heights.
- 9 and 12 Inch Risers: The lips of the 9 inch and 12 inch catch basins and risers measure 1-1/8 inches. The base of the risers should not be cut shorter than this length. Cutting to this length will add 1-1/8 inches to the overall height of the catch basin.
- 12 Inch Riser Adjustment: The support ribs on the 12 inch riser may require shaving to ensure proper fit within the 12 inch catch basin.
Load Rating and Backfill Considerations
The load-bearing capacity of the NDS catch basin system is dependent on the backfill material or concrete encasement used. The following load ratings apply:
- Soil, Sand, or Gravel Backfill: Up to 60 psi (pedestrian traffic).
- 4 Inches of Concrete Encasement: Up to 175 psi (light vehicular traffic).
- 6 Inches of Concrete Encasement: Up to 325 psi (semi-trucks).
- 8 Inches of Concrete Encasement: Up to 575 psi (heavy-duty fork lift).
It is crucial that the grate used with the catch basin also possesses a load rating equal to or exceeding the expected load.
Available Colors
NDS catch basins and risers are available in a variety of colors, including Black, Green, Gray, and Sand. The following table details color availability by catch basin size:
---|---|---|---|---|---|---|---|---|---|---| Black | Green | Gray | Sand | Black | Green | ||||| 9 inch | ✅ | ✅ | ✅ | ✅ | ✅ | ✅ | ✅ | ✅ | ✅ | | 12 inch | ✅ | ✅ | ✅ | ✅ | ✅ | ✅ | ✅ | ✅ | ✅ | ✅ | 18 inch | ✅ | ✅ | ✅ | ✅ | ✅ | ✅ | ✅ | ||| 24 inch | ✅ | ✅ | ✅ | ✅ |
Professional Installation Assistance
NDS provides a directory to locate professional contractors who have completed the NDS Pro course for installation assistance. NDS also offers evaluation and assistance with the preparation of submittal drawings and specifications.
Conclusion
The NDS catch basin system offers a versatile drainage solution with adjustable outlet configurations and varying load-bearing capacities based on installation methods. Proper installation, including correct riser usage and appropriate backfill or concrete encasement, is essential to ensure optimal performance and longevity. Compatibility with universal outlets allows for flexible piping connections. Users should consult the provided catalog for detailed outlet specifications and consider professional installation assistance when needed.