Flexcaster stair mould for producing stairs upside down
Moulds for stairs with top and bottom landings, this formwork is suitable for producing stairs upside down (steps facing downwards)
Construx has 2 types of adjustable horizontal stair moulds:
- Equipped with a hydraulic group to adjust risers and goings as well as to tilt the mould
- Equipped with 1 or 2 hydraulic hand pumps to adjust the steps
- The synchronised adjustment mechanism for risers and goings is the same for both types:
- 2 horizontal cylinders adjust the distance in between the individual steps
- 2 vertical cylinders adjust the angle between the steps
Consequently, both goings and risers are hydraulically controlled.
As a standard feature, the goings are adjustable between 200mm and 320mm and the risers are adjustable between 150mm and 200mm. Usually, the width of the stair mould is 1,5m but this can be wider, up to 4m. In the wider moulds 2 stairs can be cast next to each other. Customers can choose any number of steps, but the number usually varies between 10 and 24. Long moulds with 20 steps or more can be used to cast 2 flights of stairs with a limited number of steps simultaneously. Stair moulds with a hydraulic group can be equipped with a hydraulic tilting device to facilitate the installation of the reinforcement, the removal of the concrete stairs and the cleaning of the mould.
One side of the stair mould is equipped with a height-adjustable side panel. As a result of this height adjustment, the steps can vary in thickness between 120mm and 250mm. For non-tilting wide stair moulds, an extra adjustable side panel on the other side is an appropriate option. The stair mould includes 2 sets of landing equipment (top and bottom). The panel for the bottom landing is constructed as an extended first step element. The angle of the bottom landing panel can be manually controlled with great precision by means of 2 synchronised spindles. The panel for the top landing sits on a carriage and can be inserted at every position after removing a few step.
If the top landing carriage is set up at the rear of the mould, it will be linked to the last axle, thus travelling back and forth when the goings and risers are hydraulically adjusted. The angle of the top landing panel can be manually controlled with great precision by means of 2 synchronised spindles.
The most common feature of the steps is the one with the articulating front. These fronts are designed with a support plate which falls back 18mm, incorporating timber blocks and magnets. They can be used to fit 18mm plywood strips or 3mm metal plates onto which 15mm plywood strips are screwed. The steps with cut-back and nose can be produced by using triangular magnetic chamfers which can overlap an opening of 40mm.
|The steps can feature several designs||1. Straight Steps||2. Steps with cut-back||3. Steps with cut-back and nose|
|A. Straight steps with timber front|
|B. Steps with fixed cut-back, steel front and magnetic chamfer|
|C. Steps with fixed cut-back, timber front and magnetic chamfer|
|D. Steps with articulating timber front and magnetic chamfer|