A circular window has a complete masonry ring around the opening. Its brick division must close through 360 degrees. BrickCore calculates the bricks and joints around the ring and the individual cutting profiles.
Enter diameter, ring thickness, brick dimensions and joint width. Check the closure and quantities. Download the circular setting-out template and full-size cutting pieces on numbered sheets.
circular window, oculus, bullseye window
Measure the clear diameter of the opening, excluding the brick ring. Choose ring depth, brick size and desired joint. Keep inner and outer dimensions separate: the masonry ring surrounds the clear opening.
Joints run outwards from the centre. The layout must close all the way around, including between the last and first brick. A closed ring therefore has as many joints between bricks as bricks, unlike an open straight row.
A 120 cm clear diameter gives a 60 cm inner radius. With a 21 cm radial ring depth, the outer radius is 81 cm and the outer diameter is 162 cm. Joints are divided within this ring.
A free account lets you view the calculation and drawing. The PDF contains calculated dimensions and cutting profiles; a download costs one credit. Follow the scale on the worksheet. Print full-size cutting templates at 100% with ‘fit to page’ disabled.