Upcaster to replace old-school ramp moulds
Upcaster
Ramp stair mould for upright precast stair casting
The Upcaster by Construx-Weckenmann is an innovative stair mould system that allows precast stairs to be poured in their final, upright position—exactly as they will be installed on site. Built on a robust, adjustable ramp structure, the Upcaster provides a stable casting platform, simplifies mould setup, and enables fast and accurate adjustment of all stair and landing elements.
This system is ideal for extra-wide stairs, double stair units, or any precast application requiring stairs to be formed in installation orientation.
Real-Position Casting on a Ramp
Unlike traditional horizontal or upside-down stair moulds, the Upcaster forms stairs on an inclined ramp, replicating their final installation angle. This ensures:
- True-to-position pouring
- Minimal handling after demoulding
- High dimensional accuracy
- Easier planning for site installation
Fully Adjustable Formwork System
All core movements are carried out using electric motors, precision spindles, and chain drives—allowing quick, synchronized adjustments of:
- Ramp angle
- Top landing panel height and position
- Base levelling
The bottom landing panel remains level throughout, while the top landing panel is supported by a solid, height-adjustable structure that guarantees safe working conditions and precise angle alignment.
Technical specifications
| feature | specification |
|---|---|
| Ramp length | 6m (or longer upon request) |
| Common mould widths | 2.5m to 4.0m |
| Common landing panel lengths | 2.5m to 3.0m |
| Adjustable casting angle | 24° to 43° |
| Step side-forms | Timber (cut to spec by customer) |
| Double stair casting | Supported (side-by-side configuration) |
Key Benefits
- Cast stairs upright on the ramp, as they’ll be installed on site
- Electric motor adjustments for smooth and accurate setup
- Accommodates wide stairs or two parallel flights
- Stable and safe working platform with easy access
- Reduces post-processing and site installation issues
- Perfect for projects requiring angle-specific stair solutions
