The plank is melee weapon which has poor durability, but is effective at knocking down zombies.
The plank is a heavy weapon (weight 3) and has a slow swing rate. Its main benefits are that it works well for pushing zombies away from the player and has an extremely long range in comparison to other weapons (the plank has range of 2, compared to the Baseball bat which has 1.5).
Planks can sometimes be found in crates in a warehouse or any other shed/storage building. Wooden planks can also be retrieved by smashing down doors and by sawing logs into planks. A plank cannot be repaired.
A plank is a multi-attack weapon, and can attack 2 zombies at once. It also can cause 5 door damage per swing, but no tree damage.
Non Weapon uses
A wooden plank is the staple fortification reserve in Project Zomboid. They are primarily used to barricade doors and windows or to fortify/create structures by making wall pieces, doors, door frames, window frames, crates, stairs, and barricades.
Planks used as barricades use their current health as part of the barricade. If a plank is at half durability and is nailed to a window/door, that durability is the strength of that piece of the barricade. Wooden planks can also be obtained by ripping away barricades on houses (though planks may be damaged from previous attacks by zombies).
Wooden planks are also used to make bridges/flooring that can be crossed by both the player and zombies.
Planks have an additional use as a fuel for fires, and lasts for 4 hours if used this way.
A normal plank used as a weapon or for construction.
Carpentry Level 0
Crafting (As a weapon)
A plank can be turned into a nailed plank, which increase its damage output. As of Build 34.28, the extra nails do not lower the durability of the plank (unlike the baseball bat, where adding nails gives a weapon penalty).