![Gratings Design Capacities 1 Gratings Design Capacities](https://excel.civilmdc.com/wp-content/uploads/2021/12/Gratings-Design-Capacities.png)
A grating is any regularly spaced collection of essentially identical, parallel, elongated elements. Gratings usually consist of a single set of elongated elements, but can consist of two sets, in which case the second set is usually perpendicular to the first (as illustrated).