http://www.cmcconstructionservices.com/radius-formwork/
Radius Formwork
Symons Flex Form
The all-steel Flex-Formsystem from Symons provides contractors strength and flexibility. Flex-Form has integral 4" deep vertical stiffeners with 3⁄16" steel skin plate to provide up to a 1,200 psf system. Flex Form adapts to any radius 5’ and over.
Flex Form Features & Benefits 
- Steel ribs set the radius and bolt to the top and bottom of flexible panels that secure the form in the required radius.
- Panels conform to the radius of the ribs assuring the correct radius
- By substituting a straight rib, Flex-Form can be used for straight walls when needed.
- No “chording” effect in the poured concrete surface.
- The Flex‑Form system produces smooth concrete surfaces that require minimal finishing labor.
- There are no expensive templates to build, no floppy panels to handle and no bolts to torque.
RMD Reflex
Reflex is a cost effective formwork system for reinforced concrete curved walls. It’s galvanized steel frame, high-grade form ply face and innovative design features allow for the setting of all curves efficiently and accurately.
Flex Form Features & Benefits 
- Reflex is a pre-assembled, adjustable panel that uses robust turnbuckles so it can be easily and accurately adjusted for the setting of all curves.
- Its galvanized finish eliminates corrosion, minimizes maintenance and extends the lifetime integrity of the system.
- Reflex is easily adjusted for re-use at site after site without dismantling, which eliminates the risk of component loss and improves on-site productivity.
- Reflex has a high-grade form ply face which produces a high quality concrete finish.
- Reflex panels can be adjusted to form parabolic curves and transition curves from one radius to another.
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