Rampant arch calculator

A rampant arch connects springing points at different heights. BrickCore lets you choose the higher side and set the side angles. The drawing shows how bricks span the unequal springing levels.

Enter, check and download

Set the opening and level difference first, then the brick size and joints. Inspect both side connections and the depth in 3D before downloading the PDF workshop sheets.

rampant arch

Rampant arch calculator

Which dimensions do you enter?

Measure the horizontal opening and the height difference between the two sides. Identify which side is higher. Enter crown height, brick size and joint, using the same horizontal datum throughout.

How does the brick layout work?

A rampant arch starts at different heights on its two sides. Left and right are therefore not automatically interchangeable. Follow the calculated brick numbers and cutting profiles; simply mirroring one half can produce incorrect joints.

Worked example

With a 160 cm horizontal opening and a 35 cm height difference, the high springer is 35 cm above the low one. Measure the 160 cm horizontally, not along the sloping line between them.

From calculation to PDF worksheet

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.

Read the free manual setting-out guide (Dutch)