Adjustable marginal wall for form panels used for casting castable material and method of casting castable material

A marginal wall for use with a form panel used for casting castable material, comprising:

• a fixed support for attachment to the form panel;
• a number of fingers movably carried by the fixed support so as to be movable relative to the fixed support between an extracted and a retracted position,
• with the fingers for extending beyond an edge of the form panel edge at least in their extracted position, and with the fingers having a load-bearing surface for retaining castable material slurry;
• an actuation mechanism capable of moving the fingers between the retracted and extracted positions;
• wherein the fingers are movably carried by the fixed support such that at least some of the fingers are distinctly movable with respect to the others, for forming with the fingers a marginal barrier of variable size beyond the edge of the form panel.

A method of casting castable material in a target area comprising the steps of:

• providing a form panel;
• providing a marginal wall comprising a fixed support, a number of fingers movably carried by the fixed support, and an actuation mechanism capable of moving the fingers relative to the fixed support;
• attaching the fixed support of the marginal wall to the form panel;
• placing the form panel at a limit position of a target area where a castable material slurry is to be cast, with the form panel having an edge positioned near an external surface;
• moving, with the actuation mechanism, at least some of the fingers beyond and away from the edge of the form panel to form a marginal barrier between the edge of the form panel and the external surface, with at least some of the fingers being moved distinctly from the others such that the marginal barrier will be of variable dimensions;
• and
• pouring the castable material slurry in the target area and retaining the castable material slurry in the target area with the form panel and with a load-bearing surface of the fingers of the marginal wall, with the fingers of the marginal wall preventing the castable material slurry from flowing between the edge of the form panel and the external surface.