Amvic’s Ampex Estimator can be used to get a quick estimate for the numbers of panels and volume of concrete needed for a given project. Since most projects are not simple rectangles or squares, it is a common practice to add 1-2 panels to the final estimate. For slabs that have highly irregular shapes (a lot of ins and outs or stepping) it is recommended to add an additional 10% to the number of panels estimate. For the most accurate estimate, one can use CAD software to lay out panels on a floor plan.