VicRoads/DTP SD 1641– compliant two-pipe headwall for subsoil/pavement drains.
The VicRoads Concrete Double Batter Outlet is a twin-pipe headwall for subsoil drainage that complies with VicRoads / DTP Standard Drawing SD 1641 (Type 2). It controls discharge at the batter and helps reduce erosion while protecting the pavement structure.
In simple terms: a concrete outlet with two pipes that releases water safely on a slope and helps prevent erosion.
Manufactured in high-strength precast concrete, the unit suits road and civil environments and provides a durable, low-maintenance termination to higher-flow drain runs.
| Standard | VicRoads / DTP SD 1641 — Pavement Drain: Alternative Arrangements (Type 2) |
| Material | High-strength precast concrete |
| Overall dimensions | 900mm × 870mm × 400mm |
| Indicative unit weight | 740kg (approx.) |
| Associated drawings | SD 1611 (Subsurface Drain — Pits); SD 1631 (Pavement Drain — Terminals) |
| Variants | Type 1 (Single); Type 2 (Double) |
Note: Confirm invert levels, pipe connections, bedding and erosion control to the engineer’s design and authority requirements.
See the Dimensions tab for size & indicative weight, and FAQs for approvals and usage.
Download SD 1641 (PDF) | Request a quote
Related: VicRoads Concrete Single Batter Outlet
| Product Code | Product Description | Dimensions | Weight | SD REF |
|---|---|---|---|---|
| VRBATOUTDOUB870 | Batter Outlet Double | 900mm x 870mm x 400mm | 740kg | SD 1641 |
Yes. This is the Type 2 twin-pipe outlet to VicRoads/DTP SD 1641. Use project-specific detailing per the engineer’s design.
It safely discharges water from subsoil/pavement drains at the slope (batter). Two outlets help handle higher flows and reduce erosion.
Single = one outlet (Type 1). Double = two outlets (Type 2) for higher flow or redundancy.
Approx. 900mm x 870mm x 400mm; indicative unit weight ~740kg. Confirm at order.
The headwall is supplied as a precast unit. Pipes, seals and erosion control (apron/rock beaching) are provided per the project design.
Road shoulders, embankments and cut-to-fill zones on projects built to VicRoads/DTP standards.
Delivery by truck to customer-unload. Forklift or crane. Crane truck available on request.
Yes—coordinate with SD 1611 subsurface pits and SD 1631 terminals. A Single Batter Outlet (Type 1) is also available.
