Ram
Large object
Armor Class: 15
Hit Points: 100
Damage Immunities: poison, psychic
Ram. Melee Weapon Attack: +8 to hit , reach 5 ft., one object. Hit: 16 (3d10) bludgeoning damage.

A ram consists of a movable gallery equipped with a heavy log suspended from two roof beams by chains.
The log is shod in iron and used to batter through doors and barricades.

It takes a minimum of four Medium creatures to operate a ram. Because of the gallery roof, these operators have total cover against attacks from above.