Formwork of walls with round section is done in two following methods: In the first method which the arc (radius) is high, we can use plygonal method. In this method the formwork is done by use of modular panel and milled tubes.
In the second method, which is applicable for walls with low arc (radius), the round section is used instrad of modular panels. In this method, the panels have not stiffener strips and are fitted by use of middle size grips and milled tubes considering the arc in question. Where the thickness of the wall is high, the section with 80x40 and long grip will be used