Concrete Arch - Pi In the Sky
The humble arch, so simple, so profound, so powerful
The arch is Pi in the sky, a curved concrete crescent
Supporting span of bridge or lintel
Inspired by rainbow, waxing and waning moon
Instilled by foot arch, caterary chain suspended
Upper segment of circle, Pi with curved bowed legs.
Compress concrete crush resolves, eliminates tension.
Keystone at apex of arch locks stack array of blocks
With Roman arch a symbol, old concept straggling time
Copyright © John Anderson | Year Posted 2016
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