Drapery is the workhorse rockfall treatment for state DOT and Class I rail corridors that run beneath persistently weathering rock cuts. On highway rock cuts, the system handles the freeze-thaw release rate that would otherwise require recurring rock scaling mobilizations, channeling sub-ton blocks down into a catchment ditch sized per the FHWA Rockfall Catchment Area Design Guide.
Mining and quarry highwalls use drapery to contain ongoing release from active or post-production faces, often after controlled blasting has produced the final pit wall, so production can continue beneath a stabilized highwall with greater clear distance than highway practice typically allows.
Post-wildfire slopes are a third major application. Vegetation loss exposes the rock substrate to direct weathering and accelerates the source rate, drapery is deployable in days, often before the first significant rainfall season, and pairs with debris flow barriers at the toe for combined rock and debris control.
Steep, inaccessible terrain drives the fourth common case. Rope-access crews can install crest anchors and lace mesh on faces where vehicle-mounted drilling is impossible, including the vertical and overhanging cliffs typical of canyon rail corridors, port rockfall sites, and remote mountain highways.