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ARCH<br />
Section Of A Water Main With A Roman Arch<br />
The Roman arch contains voussoirs, or bricks. The keystone is the center voussoir that supports the other bricks. The push or thrust of the cemented voussoirs push outward and downward in the arch.

Fphoto-61960604A-6DS.jpg

ARCH
Section Of A Water Main With A Roman Arch
The Roman arch contains voussoirs, or bricks. The keystone is the center voussoir that supports the other bricks. The push or thrust of the cemented voussoirs push outward and downward in the arch.

Copyright:© 2006 Diane Hirsch - Fundamental Photographs

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Diane Hirsch