springing line

noun

, Architecture.

1. a horizontal line between the springs of an arch or dome.
2. the rise or the angle of the rise of an arch.

Example Sentences

Their arches are richly moulded and acutely pointed, the springing-line being rather low down.

From Project Gutenberg

The length of the longest bridge is 3,000 feet and the span of the arches at the springing line is fifty-six feet.

From Project Gutenberg

These joints in the arch were not allowed to be made above a point 60 above the springing line.

From Project Gutenberg

To distribute the skip cars along the work a trestle was built close alongside the bridge and at about springing line level.

From Project Gutenberg