Invert level

In civil engineering, the invert level is the base interior level of a pipe, trench or tunnel; it can be considered the "floor" level. Conversely, the crown level is the highest interior level, and can be considered the "ceiling" level.

Laying the pipe-on bedding materials-Invert levels-backfilling trench and compaction

单词	Invert level
释义	Invert level 英语百科 Invert level In civil engineering, the invert level is the base interior level of a pipe, trench or tunnel; it can be considered the "floor" level. Conversely, the crown level is the highest interior level, and can be considered the "ceiling" level. Laying the pipe-on bedding materials-Invert levels-backfilling trench and compaction
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