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I design brick arches and cast stone using simple geometry and AutoCAD. We cut brick shapes and then prefabricate traditional masonry arches that stand the test of time. I want to share the mathematical formulas of arch building. by Justin Wethington

By Justin Wethington, Apr 18 2016 01:54PM

Wikipedia defines a chevron as a v shape pattern. We see this in nature with Canadian geese flying overhead. In my case it has to do with architecture, in particular with a herringbone brick pattern.

This is a custom design of a firebox with a herringbone pattern. The architect wanted to replicate a slate fireplace with 1" x 6" brick shapes. The bond works out to 1/5 with a 1/4" joint. As you can see in the following picture, there is a central chevron in the back panel of the fireplace, and visually the firebox has 3 chevrons pointing up on the back panel, and 3 chevrons on the side panels.


By Justin Wethington, Apr 18 2016 01:52PM

I had never heard of Ft. Myer before Randy of LDC masonry called me to talk about a building he is renovating there. The base is nestled right next to Arlington National Cemetery. We met across from the chapel on base at 8 am a few days before veterans day. I was waiting in my truck for Randy to arrive while I watched a military funeral procession happening in front of the chapel. I felt a deep sense of gratitude for the life I have as I watched the funeral of some anonymous soldier. The army funeral rituals were so deliberate and sorrowful. I was moved by the immense size of Arlington Cemetery and I felt heavyhearted the rest of the day.


The arches we were trying to match were made of standard size brick and are 8 brick courses tall. They arch is double wythe with a 3" rise in the center.



By Justin Wethington, Apr 18 2016 01:50PM

We often get jobs that are either renovations or additions, and the architect and masonry contractor want the new brickwork to match the existing building. Brick arches built decades ago were made without autoCAD and designed with form following function. What we pay close attention to when we need to match an old brick arch are: structure, bond, skew, striking tool, and joint width. Here is picture a bricklayer sent us.


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