A manhole fillet is described as which of the following?

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Multiple Choice

A manhole fillet is described as which of the following?

Explanation:
In manhole geometry, a fillet is the rounded, curved transition where two surfaces meet, rather than a sharp corner. The invert is the bottom interior surface where the flow travels. So describing a manhole fillet as a curved invert means the bottom of the manhole isn’t flat or square, but rounded to create a smooth, continuous surface at the flow path. This rounded bottom helps reduce sediment buildup and flow turbulence by avoiding sharp corners. The other options—being a straight segment, a raised vent, or a square corner—don’t describe that rounded transition at the bottom, which is why a curved invert is the best description.

In manhole geometry, a fillet is the rounded, curved transition where two surfaces meet, rather than a sharp corner. The invert is the bottom interior surface where the flow travels. So describing a manhole fillet as a curved invert means the bottom of the manhole isn’t flat or square, but rounded to create a smooth, continuous surface at the flow path. This rounded bottom helps reduce sediment buildup and flow turbulence by avoiding sharp corners. The other options—being a straight segment, a raised vent, or a square corner—don’t describe that rounded transition at the bottom, which is why a curved invert is the best description.

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