springing line

American  

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.

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Example Sentences

A concrete-mixing plant was placed in each shaft, the mixer being located high enough to discharge into cars at about the level of the springing line of the arch.

From Transactions of the American Society of Civil Engineers, Vol. LXVIII, Sept. 1910 The New York Tunnel Extension of the Pennsylvania Railroad. The Cross-Town Tunnels. Paper No. 1158 by Brace, James H.

The first was brought up just above the sidewalk and formed the bench for the high-tension ducts; the second carried the wall up to the springing line.

From Transactions of the American Society of Civil Engineers, Vol. LXVIII, Sept. 1910 The New York Tunnel Extension of the Pennsylvania Railroad. The Cross-Town Tunnels. Paper No. 1158 by Brace, James H.

The concrete for the portion of the pier above springing line and for the lower portions of the haunches was dumped direct from the cars.

From Concrete Construction Methods and Costs by Gillette, Halbert Powers

The side walls were concreted to the springing line and then the five-ring brick roof arches were constructed on traveling centers and in 20-ft. sections.

From Concrete Construction Methods and Costs by Gillette, Halbert Powers

This form carried the concrete from about 2 ft. below to about 2 ft. above the springing line.

From Concrete Construction Methods and Costs by Gillette, Halbert Powers