open-conductor
open-core
open-cup
open-cut
open-cycle
open-cylinder
open-deck
open-delta
open-ditch
open-drained
  open-end
open-ended
opener
open-face
open-file
open-flame
open-flow
open-frame
open-gate
open-grained
open-grid

    open-end pile

    свая с открытым нижним концом