Originally Posted By: Shotgunlover
Swamped means sunken, that explains it accurately. The rib is sunken between the two barrels.

Concave refers to the nature of the rib surface. A concave rib can ride pretty high and be concave but not swamped.

The Fench Ideal has an "I" section rib, which incorporates top and bottom rib, connecting via the vertical part of the "I". It is by definition swamped.


Perfect explanation.

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