Circular Wall Formwork

Curved steel formwork segments for water tanks, silos, treatment basins and circular structures.

In circular structures the curvature of the formwork defines the geometry of the concrete exactly. Our segmented steel system is manufactured rigid enough to hold the required radius without distortion on site.

Applications

Potable water and fire-water tanks
Cement, clinker and grain silos
Wastewater treatment basins
Circular building cores and towers
Arch-section infrastructure elements

Fixed or adjustable radius

If many pours will be made at a single radius, fixed-curvature segments are the most economical solution. For systems used at different diameters, an adjustable connection detail lets the same segment work across a defined radius range.

On tall tanks the formwork operates in a climbing arrangement, rising level by level. Each level includes a working platform and safety guardrail.

Special details for water structures

Sealed tie rods that preserve watertightness
Waterstop recesses at construction joints
Watertight joint detailing for a smooth internal surface
Release agent recommendations suitable for potable water structures

Technical notes

Geometry: Fixed radius or adjustable radius
Segment body: Curved steel profile frame + rolled plate face
Climbing: Level-by-level climbing arrangement with platforms
Connection: Segment bolts + tie rods
Water structures: Sealed ties and waterstop recess (optional)
Surface treatment: Shot blasting + industrial coating

Gallery

Click an image to enlarge

SSS

With the adjustable type, within a defined radius range, yes. The wider the range, the more segments and cost are involved; telling us the diameters you plan to use lets us find the most efficient solution.

The release agent in contact with the concrete face must be approved for potable water. It is also critical that joint and tie details do not compromise watertightness; we plan these details together at the design stage.