SD 1641–compliant one-pipe headwall for subsoil drainage.
The VicRoads Concrete Single Batter Outlet is a one-pipe headwall for subsoil drainage that complies with VicRoads / DTP Standard Drawing SD 1641 (Type 1). It controls discharge at the batter and helps reduce erosion and protect the pavement structure.
In simple terms: a concrete outlet for one pipe that discharges water safely on a slope and helps prevent erosion.
Manufactured in high-strength precast concrete, the unit is sized for road and civil works and provides a durable, low-maintenance termination to the drain run.
| Standard | VicRoads / DTP SD 1641 — Pavement Drain: Alternative Arrangements (Type 1) |
| Material | High-strength precast concrete |
| Overall dimensions | 900mm x 715mm x 390mm |
| Indicative unit weight | 370kg (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.
| Product Code | Product Description | Dimensions | Weight | SD REF |
|---|---|---|---|---|
| VRBATOUTSING715 | Batter Outlet Single | 900mm x 715mm x 390mm | 370kg | SD 1641 |
Use: complies with VicRoads / DTP SD 1641 (Type 1). The authority publishes the standard detail; products are supplied to comply with it.
Single suits one subsoil line or lower combined flows. Choose Double where two lines terminate or higher combined flows are required.
SD 1611 (subsurface drain pits) and SD 1631 (pavement drain terminals). Follow the project design.
Projects commonly nominate 150mm outlets from pits; confirm upstream design and any transitions (e.g. to PVC/HDPE/FRC).
Yes—supply blank for site coring or pre-cored to order. Nominate pipe sizes, centres and invert levels at order.
Approx. 900mm x 715mm x 390mm and 370kg. Confirm exacts at quotation/order.
Often recommended for maintenance. Single flush-out riser sets are commonly used with single outlets; double sets with double outlets.
By the designer’s detail—e.g. rock beaching, apron slab, Reno mattress, or vegetated swales.
Delivery by truck to be forklift unloaded. Crane available on request. Ensure safe access, level ground and clear lifting zones at site.
Standard units are often available quickly; pre-cored/custom units require additional lead time. Confirm at RFQ.
Quantity, pre-coring details (sizes/centres/inverts), delivery suburb/postcode, required date, and any access constraints.
Yes—spec sheets and compliance info are available; customs may include shop drawings. Standard warranty against manufacturing defects applies.
