Circular formwork H20

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Overview
Circular formwork H20 is a practical circular formwork system for producing smooth, curved concrete walls with continuously adjustable radii from 3.50 m upward. The system is delivered as site-ready, pre-assembled elements for inside and outside faces.

Key benefits

• Cost-efficient: reduces rental and labour costs; requires only one form-tie per 1.50 m²; low stocking quantities due to adaptable elements.
• Continuously adjustable radii: precise curves from 3.50 m upwards using adjusting spindles and a practical height grid; Dokaplex 21 mm form-ply for high load capacity and flexibility.
• Fast handling on site: single connecting device (Adjustable clamp 10 cm); easy combination with Framax Xlife, Alu‑Framax Xlife and Column formwork RS; radii set by turning spindles and verified with flexible templates.

System
The circular formwork elements are adjusted steplessly with reference to a flexible template. A special end-profile enables straightforward connection to other Doka formwork systems such as Framax Xlife and Column formwork RS.

Element size grid

• Only two element widths for all radii down to 3.50 m: inside element 2.40 m, outside element 2.50 m.
• Practical height grid: five element heights available.

Application
Site-ready, pre-assembled elements (one each for inside and outside formwork) are continuously adjustable with a flexible template to set radii down to 3.50 m. Radii are set by turning adjusting spindles to maintain a smooth construction workflow.

Suitable products & accessories (selection)

• Dokaplex 21 mm form-ply (heavy-duty)
• Adjustable clamp 10 cm (connecting device)
• Special end-profile for connection to Framax Xlife, Alu‑Framax Xlife, Column formwork RS

Technical specifications

• Brand: Doka
• Model: H20
• Minimum radius: from 3.50 m (continuously adjustable)
• Form-ply: Dokaplex 21 mm
• Element widths: inside 2.40 m; outside 2.50 m
• Element heights: 5 heights in practical grid
• Form-ties: guideline one per 1.50 m²
• Connecting device: Adjustable clamp 10 cm
• Delivery state: site-ready, pre-assembled elements
• Adjustment method: stepless via adjusting spindles; check with flexible templates