# compound curve

## compound curve

[′käm‚pau̇nd ′kərv]
(mathematics)
A curve made up of two arcs of differing radii whose centers are on the same side, connected by a common tangent; used to lay out railroad curves because curvature goes from nothing to a maximum gradually, and vice versa.
References in periodicals archive ?
On the 1200 Intrepid Project, the High Concrete Group was able to take the architect's 3D marketing model, adapt it for the 3D design of the building's panels and connections [with Tekla Structures BIM software], translate it into the fabrication of the individual precast panels, and use it for the complex layout of each connection for the construction of a very complicated compound curve facade," explains Roger Gentry of Turner Construction.
The overhanging front roof (pictured at bottom) shields the driver from bad weather, and was well worth the challenge of executing a compound curve out of plywood (we had to cut the plywood into strips).
REM's surveyor designed a proposed direct pipe profile, which included a compound curve of 10 degrees (3,200 feet) horizontal curve and 11 degrees vertical curve (3.
Shrink films are finding their place for compound curve surfaces or in applications where the full coverage label lends itself to the container and content.
When combined with the outer frame, these three mesh panels create a compound curve that matches the contours of the human back and has exceptional lumbar support.
Horizontal alignment checks include radius of curvature, superelevation rate and transition design, length of horizontal curve, and compound curve ratio.
If the designer introduces a lower design speed within a single compound curve or within the second or third in a series of curves, the motorist is not only caught by surprise, but is accelerating rather than preparing to brake or slow down further.
Figure 8 shows a rather typical compound curve, obtained on a compound of EA.
A compound curve with a veneer is pretty difficult," Conley says, adding that how Century accomplished it is a "secret.
It is intended as a preview for the next evolution of Mazda's Kodo design language and features compound curves.
It also became necessary to revamp plans for anchoring the pipe thruster to avoid interference with one utility; another required the alignment to take a course that included two compound curves which is very unusual in the Direct Pipe industry.

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