ramm, rammvasar - vaiade rammimise seade. Mehaaniline ramm om malmvalatis (mass kuni 3000 kg), mis tõstetakse vintsiga mõne meetri kõrgusele ja lastakse vabalt langeda. Auru-suruõhu- ja diiselrammi massiivne silinder annab lööke vaiale paigaldatud kolvile.
a framed construction erected above the spot where a pile is to be driven into the ground. It is provided with a heavy weight which runs in upright guides and is so arranged that it may fall by gravity on to the head of the pile and drive it in. Now superdeded by more efficient plant.
