Bananas for Scale
Trebuchet (Medieval)

Photo from Wikimedia Commons

Trebuchet (Medieval)

The counterweight siege engine that shattered castle walls/Historical

The counterweight trebuchet was the most powerful siege engine of the medieval period, capable of hurling projectiles weighing 100-150 kg over 300 meters. A large trebuchet stood about 10-17 m tall with a throwing arm of 10-15 m. The counterweight box held 10-20 tonnes of stone or earth. Edward I's famous 'Warwolf' trebuchet, used at the Siege of Stirling Castle in 1304, was reportedly so large it took 30 wagons to transport and five master carpenters three months to build.

Measurements

Height15 m
169Crayons
224Tennis ball diameters

Large siege trebuchet at full height

Arm length12 m
2.18Giraffes
6.74Samsung refrigerators
18.5Baguettes

Throwing beam

Counterweight mass15,000 kg
300,000Rubber ducks
150 billionthsReservoir water masses

Stone and earth fill

Projectile mass140 kg
3,050Golf balls
140,000Paperclips
103Costco rotisserie chickens

Typical stone projectile

Range300 m
1,000Celery stalks
1,500Burrito lengths
61.2Canoes

Maximum effective range

Base width6 m
30Cucumber lengths
113 billionBohr radii
2.39Phone booth heights

Timber frame footprint

Total machine mass20,000 kg
182 septillionHemoglobin molecule weights
111Male gorillas
5.71Forklifts

Frame and mechanism

Browse more in Historical