U-Drains are one of the most widely specified precast concrete products in Indian infrastructure: roadside drainage on national highways, stormwater channels in urban schemes, and cable trench systems on industrial sites all depend on them. Despite how common they are, specifying the wrong size or load class is a recurring problem on site.
BRHC Concrete Industries manufactures U-drains in a range of standard sizes, all produced under controlled factory conditions using vibro-compaction to achieve consistent wall thickness and smooth internal finish.
Standard Precast U-Drain Sizes
| Internal Width (mm) | Internal Depth (mm) | Wall Thickness (mm) | Length (mm) |
|---|---|---|---|
| 500 | 200 | 50 | 500 |
| 500 | 300 | 50 | 500 |
| 500 | 850 | 50 | 500 |
Custom sizes are also manufactured against drawing: contact our team with your hydraulic calculations or project specifications.
T-25 vs T-6 Load Class - What to Specify
U-drains used alongside roads or in areas with vehicle access are covered by a load-rated cover slab. T-25 covers standard highway and urban road applications. U Drain T-6 is required on footpaths, residential roads, secondary drainage channels, and cable duct and ICT duct applications. Specifying the wrong class is a structural non-conformance and a common procurement error; always confirm with your design engineer or project QAP.
Common Applications of Precast U-Drains
- Roadside drainage on state and national highways
- Storm water management in urban development schemes
- Cable trench systems with precast cover slabs
- Industrial estate perimeter and yard drainag
FAQs
Q1. What is the difference between T-25 and T-6 U-drain covers?
T-25 cover slabs are rated for standard highway and urban road applications with vehicle access. T-6 is required for footpaths, residential roads, secondary drainage channels, and cable or ICT duct applications.
Q2. Can U-drains be manufactured in custom sizes?
Yes. Custom sizes are manufactured against drawing, share your hydraulic calculations or project specifications with the team for a project-specific quote.
Q3. Where are precast U-drains commonly used?
U-drains are used for roadside drainage on highways, stormwater management in urban schemes, cable trench systems, and industrial estate perimeter and yard drainage.