They were built using a span-by-span method using overhead gantry through a series of vertical and horizontal curves.
The bridge alignment is defined with vertical and horizontal curves.
The metal work describes the usual "C" shape on plan with nine or so horizontal curves spaced to give a height you can walk into.
Several patents are in use for a solution to provide this horizontal curve with a relatively small volume of gas.
The freefall drop into the horizontal curve applied a g-force of 4.5 on the riders.
She's right about the horizontal curve of the moon: it's "a perfect Cheshire grin across the sky."
Incorporating a horizontal curve, its engineering was noteworthy when built.
Considering a vehicle negotiating a horizontal curve, the most serious problems arise if the gyro axis is vertical.
If a horizontal curve has a high speed and a small radius, an increased superelevation (bank) is needed in order to assure safety.
A horizontal curve with a significantly smaller radius than those before it may need enhanced curve signs.