arch rib

arch rib

[′ärch ‚rib]
(civil engineering)
One of a set of projecting molded members subdividing the undersurface of an arch.

arch rib

1. In Romanesque architecture, a transverse rib crossing the nave or aisle at right angles to its length.
2. A principal load-bearing member of a ribbed arch.
References in periodicals archive ?
In 1992, academician Zheng Jielian published a method that uses the oblique cable to hang arch ribs during construction adopting jack control technology and continuously poured concrete arch rib technology.
We were able to find a location for those inside the arch rib itself so that they wouldn't be seen."
Since the modeling error mainly lies in the stiffness of arch ribs, so we defined the [+ or -] 50% change of the stiffness coefficient of each arch rib in order to build a big enough feasible region for the optimization of FEM updating.
* Each arch rib is made up of 56 cast-in-place sections with construction starting from the canyon walls and a closure pour that locks the two halves together.
Both the arch rib and tension tie-beam are box sections.
The arch rib is a concrete-filled steel tubular structure, which is designed as a dumbbell-shaped section with equal height, and the section height is 2.8 m.
The arch rib segments and the rest of the superstructure consist of precast high strength/high performance concrete.
Wan, Study on Mechanical Properties of concrete filled Steel Tube Arch Rib joints with PBL Dumbbell, Chang'an University, Xi'an, China, 2012.
The longitudinal walls atop each arch rib required about 210 cu yd.